Add latest changes from gitlab-org/gitlab@13-3-stable-ee

82 files changed, 1594 insertions, 0 deletions

diff --git a/db/migrate/20200504191813_add_fingerprint_to_events.rb b/db/migrate/20200504191813_add_fingerprint_to_events.rb
new file mode 100644
index 00000000000..1171d548f10
--- /dev/null
+++ b/db/migrate/20200504191813_add_fingerprint_to_events.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+class AddFingerprintToEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless column_exists?(:events, :fingerprint)
+      with_lock_retries { add_column :events, :fingerprint, :binary }
+    end
+
+    unless check_constraint_exists?(:events, constraint_name)
+      add_check_constraint(
+        :events,
+        "octet_length(fingerprint) <= 128",
+        constraint_name,
+        validate: true
+      )
+    end
+  end
+
+  def down
+    remove_check_constraint(:events, constraint_name)
+
+    if column_exists?(:events, :fingerprint)
+      with_lock_retries { remove_column :events, :fingerprint }
+    end
+  end
+
+  def constraint_name
+    check_constraint_name(:events, :fingerprint, 'max_length')
+  end
+end
diff --git a/db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb b/db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb
new file mode 100644
index 00000000000..9b06d593300
--- /dev/null
+++ b/db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddIndexOnFingerprintAndTargetTypeToEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  KEYS = [:target_type, :target_id, :fingerprint]
+
+  def up
+    add_concurrent_index :events, KEYS, using: :btree, unique: true
+  end
+
+  def down
+    remove_concurrent_index :events, KEYS
+  end
+end
diff --git a/db/migrate/20200515152649_enable_btree_gist_extension.rb b/db/migrate/20200515152649_enable_btree_gist_extension.rb
new file mode 100644
index 00000000000..686b685fb5d
--- /dev/null
+++ b/db/migrate/20200515152649_enable_btree_gist_extension.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class EnableBtreeGistExtension < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def up
+    execute 'CREATE EXTENSION IF NOT EXISTS btree_gist'
+  end
+
+  def down
+    execute 'DROP EXTENSION IF EXISTS btree_gist'
+  end
+end
diff --git a/db/migrate/20200515153633_iteration_date_range_constraint.rb b/db/migrate/20200515153633_iteration_date_range_constraint.rb
new file mode 100644
index 00000000000..ab197ff8ae7
--- /dev/null
+++ b/db/migrate/20200515153633_iteration_date_range_constraint.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+class IterationDateRangeConstraint < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def up
+    execute <<~SQL
+      ALTER TABLE sprints
+        ADD CONSTRAINT iteration_start_and_due_daterange_project_id_constraint
+        EXCLUDE USING gist
+        ( project_id WITH =,
+          daterange(start_date, due_date, '[]') WITH &&
+        )
+        WHERE (project_id IS NOT NULL)
+    SQL
+
+    execute <<~SQL
+      ALTER TABLE sprints
+        ADD CONSTRAINT iteration_start_and_due_daterange_group_id_constraint
+        EXCLUDE USING gist
+        ( group_id WITH =,
+          daterange(start_date, due_date, '[]') WITH &&
+        )
+        WHERE (group_id IS NOT NULL)
+    SQL
+  end
+
+  def down
+    execute <<~SQL
+      ALTER TABLE sprints
+        DROP CONSTRAINT IF EXISTS iteration_start_and_due_daterange_project_id_constraint
+    SQL
+
+    execute <<~SQL
+      ALTER TABLE sprints
+        DROP CONSTRAINT IF EXISTS iteration_start_and_due_daterange_group_id_constraint
+    SQL
+  end
+end
diff --git a/db/migrate/20200607223047_create_cluster_agents.rb b/db/migrate/20200607223047_create_cluster_agents.rb
new file mode 100644
index 00000000000..50dd28562e4
--- /dev/null
+++ b/db/migrate/20200607223047_create_cluster_agents.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class CreateClusterAgents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:cluster_agents)
+      with_lock_retries do
+        create_table :cluster_agents do |t|
+          t.timestamps_with_timezone null: false
+          t.belongs_to(:project, null: false, index: true, foreign_key: { on_delete: :cascade })
+          t.text :name, null: false
+
+          t.index [:project_id, :name], unique: true
+        end
+      end
+    end
+
+    add_text_limit :cluster_agents, :name, 255
+  end
+
+  def down
+    with_lock_retries do
+      drop_table :cluster_agents
+    end
+  end
+end
diff --git a/db/migrate/20200607235435_create_cluster_agent_tokens.rb b/db/migrate/20200607235435_create_cluster_agent_tokens.rb
new file mode 100644
index 00000000000..30c3ad30fa5
--- /dev/null
+++ b/db/migrate/20200607235435_create_cluster_agent_tokens.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class CreateClusterAgentTokens < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:cluster_agent_tokens)
+      create_table :cluster_agent_tokens do |t|
+        t.timestamps_with_timezone null: false
+        t.belongs_to :agent, null: false, index: true, foreign_key: { to_table: :cluster_agents, on_delete: :cascade }
+        t.text :token_encrypted, null: false
+
+        t.index :token_encrypted, unique: true
+      end
+    end
+
+    add_text_limit :cluster_agent_tokens, :token_encrypted, 255
+  end
+
+  def down
+    drop_table :cluster_agent_tokens
+  end
+end
diff --git a/db/migrate/20200625193358_increase_size_on_instance_level_variable_values.rb b/db/migrate/20200625193358_increase_size_on_instance_level_variable_values.rb
new file mode 100644
index 00000000000..ee665287a31
--- /dev/null
+++ b/db/migrate/20200625193358_increase_size_on_instance_level_variable_values.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class IncreaseSizeOnInstanceLevelVariableValues < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    existing_constraint_name = text_limit_name(:ci_instance_variables, :encrypted_value)
+    new_constraint_name = check_constraint_name(:ci_instance_variables, :encrypted_value, :char_length_updated)
+
+    add_text_limit(:ci_instance_variables, :encrypted_value, 13_579, constraint_name: new_constraint_name)
+    remove_check_constraint(:ci_instance_variables, existing_constraint_name)
+  end
+
+  def down
+    # no-op
+  end
+end
diff --git a/db/migrate/20200701221303_change_default_value_of_ci_max_artifact_size_terraform_of_plan_limits_from_0_to_5.rb b/db/migrate/20200701221303_change_default_value_of_ci_max_artifact_size_terraform_of_plan_limits_from_0_to_5.rb
new file mode 100644
index 00000000000..e295d2f601a
--- /dev/null
+++ b/db/migrate/20200701221303_change_default_value_of_ci_max_artifact_size_terraform_of_plan_limits_from_0_to_5.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class ChangeDefaultValueOfCiMaxArtifactSizeTerraformOfPlanLimitsFrom0To5 < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      change_column_default :plan_limits, :ci_max_artifact_size_terraform, 5
+      execute('UPDATE plan_limits SET ci_max_artifact_size_terraform = 5 WHERE ci_max_artifact_size_terraform = 0')
+    end
+  end
+
+  def down
+    with_lock_retries do
+      change_column_default :plan_limits, :ci_max_artifact_size_terraform, 0
+      execute('UPDATE plan_limits SET ci_max_artifact_size_terraform = 0 WHERE ci_max_artifact_size_terraform = 5')
+    end
+  end
+end
diff --git a/db/migrate/20200703035021_add_notes_to_timelogs.rb b/db/migrate/20200703035021_add_notes_to_timelogs.rb
new file mode 100644
index 00000000000..d711fd0400d
--- /dev/null
+++ b/db/migrate/20200703035021_add_notes_to_timelogs.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class AddNotesToTimelogs < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      add_column :timelogs, :note_id, :integer
+    end
+    add_concurrent_index :timelogs, :note_id
+    add_concurrent_foreign_key :timelogs, :notes, column: :note_id
+  end
+
+  def down
+    remove_foreign_key_if_exists :timelogs, column: :note_id
+    remove_concurrent_index :timelogs, :note_id
+    with_lock_retries do
+      remove_column :timelogs, :note_id
+    end
+  end
+end
diff --git a/db/migrate/20200710152642_add_verification_state_to_terraform_states.rb b/db/migrate/20200710152642_add_verification_state_to_terraform_states.rb
new file mode 100644
index 00000000000..71c14faab0c
--- /dev/null
+++ b/db/migrate/20200710152642_add_verification_state_to_terraform_states.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddVerificationStateToTerraformStates < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    change_table(:terraform_states) do |t|
+      t.column :verification_retry_at, :datetime_with_timezone
+      t.column :verified_at, :datetime_with_timezone
+      t.integer :verification_retry_count, limit: 2
+      t.binary :verification_checksum, using: 'verification_checksum::bytea'
+
+      # rubocop:disable Migration/AddLimitToTextColumns
+      # limit is added in 20200710153009_add_verification_failure_limit_and_index_to_terraform_states
+      t.text :verification_failure
+      # rubocop:enable Migration/AddLimitToTextColumns
+    end
+  end
+end
diff --git a/db/migrate/20200710153009_add_verification_failure_limit_and_index_to_terraform_states.rb b/db/migrate/20200710153009_add_verification_failure_limit_and_index_to_terraform_states.rb
new file mode 100644
index 00000000000..9d36a8faf4f
--- /dev/null
+++ b/db/migrate/20200710153009_add_verification_failure_limit_and_index_to_terraform_states.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class AddVerificationFailureLimitAndIndexToTerraformStates < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :terraform_states, :verification_failure, where: "(verification_failure IS NOT NULL)", name: "terraform_states_verification_failure_partial"
+    add_concurrent_index :terraform_states, :verification_checksum, where: "(verification_checksum IS NOT NULL)", name: "terraform_states_verification_checksum_partial"
+    add_text_limit :terraform_states, :verification_failure, 255
+  end
+
+  def down
+    remove_concurrent_index :terraform_states, :verification_failure
+    remove_concurrent_index :terraform_states, :verification_checksum
+    remove_text_limit :terraform_states, :verification_failure
+  end
+end
diff --git a/db/migrate/20200713141854_add_wiki_page_max_content_bytes_to_application_settings.rb b/db/migrate/20200713141854_add_wiki_page_max_content_bytes_to_application_settings.rb
new file mode 100644
index 00000000000..c0763d9816c
--- /dev/null
+++ b/db/migrate/20200713141854_add_wiki_page_max_content_bytes_to_application_settings.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddWikiPageMaxContentBytesToApplicationSettings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :application_settings, :wiki_page_max_content_bytes, :bigint, default: 50.megabytes, null: false
+  end
+end
diff --git a/db/migrate/20200715124210_add_target_details_to_audit_event.rb b/db/migrate/20200715124210_add_target_details_to_audit_event.rb
new file mode 100644
index 00000000000..65efe24a1e8
--- /dev/null
+++ b/db/migrate/20200715124210_add_target_details_to_audit_event.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class AddTargetDetailsToAuditEvent < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      # rubocop:disable Migration/AddLimitToTextColumns
+      add_column(:audit_events, :target_details, :text)
+      # rubocop:enable Migration/AddLimitToTextColumns
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column(:audit_events, :target_details)
+    end
+  end
+end
diff --git a/db/migrate/20200715135130_create_vulnerability_historical_statistics.rb b/db/migrate/20200715135130_create_vulnerability_historical_statistics.rb
new file mode 100644
index 00000000000..6afa123c341
--- /dev/null
+++ b/db/migrate/20200715135130_create_vulnerability_historical_statistics.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+class CreateVulnerabilityHistoricalStatistics < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  INDEX_NAME = 'index_vuln_historical_statistics_on_project_id_and_date'
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      create_table :vulnerability_historical_statistics do |t|
+        t.timestamps_with_timezone null: false
+        t.references :project, null: false, index: false, foreign_key: { on_delete: :cascade }
+        t.integer :total, default: 0, null: false
+        t.integer :critical, default: 0, null: false
+        t.integer :high, default: 0, null: false
+        t.integer :medium, default: 0, null: false
+        t.integer :low, default: 0, null: false
+        t.integer :unknown, default: 0, null: false
+        t.integer :info, default: 0, null: false
+        t.date :date, null: false
+        t.integer :letter_grade, limit: 1, null: false
+        t.index [:project_id, :date], unique: true, name: INDEX_NAME
+      end
+    end
+  end
+
+  def down
+    with_lock_retries do
+      drop_table :vulnerability_historical_statistics
+    end
+  end
+end
diff --git a/db/migrate/20200715171155_add_deployment_type_to_tracker.rb b/db/migrate/20200715171155_add_deployment_type_to_tracker.rb
new file mode 100644
index 00000000000..649331ecb54
--- /dev/null
+++ b/db/migrate/20200715171155_add_deployment_type_to_tracker.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddDeploymentTypeToTracker < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :jira_tracker_data, :deployment_type, :smallint, default: 0, null: false
+  end
+end
diff --git a/db/migrate/20200716120000_partition_audit_events.rb b/db/migrate/20200716120000_partition_audit_events.rb
new file mode 100644
index 00000000000..aef090339ea
--- /dev/null
+++ b/db/migrate/20200716120000_partition_audit_events.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class PartitionAuditEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+  include Gitlab::Database::PartitioningMigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    partition_table_by_date :audit_events, :created_at
+  end
+
+  def down
+    drop_partitioned_table_for :audit_events
+  end
+end
diff --git a/db/migrate/20200716145156_add_text_limit_to_audit_event_target_details.rb b/db/migrate/20200716145156_add_text_limit_to_audit_event_target_details.rb
new file mode 100644
index 00000000000..43ee98b69e0
--- /dev/null
+++ b/db/migrate/20200716145156_add_text_limit_to_audit_event_target_details.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddTextLimitToAuditEventTargetDetails < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_text_limit :audit_events, :target_details, 5_500
+  end
+
+  def down
+    remove_text_limit :audit_events, :target_details
+  end
+end
diff --git a/db/migrate/20200717080257_add_prevent_forking_to_namespace_settings.rb b/db/migrate/20200717080257_add_prevent_forking_to_namespace_settings.rb
new file mode 100644
index 00000000000..b46daac6a98
--- /dev/null
+++ b/db/migrate/20200717080257_add_prevent_forking_to_namespace_settings.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddPreventForkingToNamespaceSettings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :namespace_settings, :prevent_forking_outside_group, :boolean, null: false, default: false
+  end
+end
diff --git a/db/migrate/20200717163656_add_moved_project_to_notification_settings.rb b/db/migrate/20200717163656_add_moved_project_to_notification_settings.rb
new file mode 100644
index 00000000000..9c60a678c1f
--- /dev/null
+++ b/db/migrate/20200717163656_add_moved_project_to_notification_settings.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddMovedProjectToNotificationSettings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :notification_settings, :moved_project, :boolean, default: true, null: false
+  end
+end
diff --git a/db/migrate/20200718040100_add_index_on_merge_request_diffs_external_diff_store.rb b/db/migrate/20200718040100_add_index_on_merge_request_diffs_external_diff_store.rb
new file mode 100644
index 00000000000..372a9df82a1
--- /dev/null
+++ b/db/migrate/20200718040100_add_index_on_merge_request_diffs_external_diff_store.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddIndexOnMergeRequestDiffsExternalDiffStore < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :merge_request_diffs, :external_diff_store
+  end
+
+  def down
+    remove_concurrent_index :merge_request_diffs, :external_diff_store
+  end
+end
diff --git a/db/migrate/20200718040200_add_index_on_terraform_states_file_store.rb b/db/migrate/20200718040200_add_index_on_terraform_states_file_store.rb
new file mode 100644
index 00000000000..7dddcf1fcea
--- /dev/null
+++ b/db/migrate/20200718040200_add_index_on_terraform_states_file_store.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddIndexOnTerraformStatesFileStore < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :terraform_states, :file_store
+  end
+
+  def down
+    remove_concurrent_index :terraform_states, :file_store
+  end
+end
diff --git a/db/migrate/20200718040300_add_index_on_vulnerability_exports_file_store.rb b/db/migrate/20200718040300_add_index_on_vulnerability_exports_file_store.rb
new file mode 100644
index 00000000000..c0d546ae112
--- /dev/null
+++ b/db/migrate/20200718040300_add_index_on_vulnerability_exports_file_store.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddIndexOnVulnerabilityExportsFileStore < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :vulnerability_exports, :file_store
+  end
+
+  def down
+    remove_concurrent_index :vulnerability_exports, :file_store
+  end
+end
diff --git a/db/migrate/20200720053909_add_elasticsearch_indexed_file_size_limit_kb_to_application_settings.rb b/db/migrate/20200720053909_add_elasticsearch_indexed_file_size_limit_kb_to_application_settings.rb
new file mode 100644
index 00000000000..bab5fe827d0
--- /dev/null
+++ b/db/migrate/20200720053909_add_elasticsearch_indexed_file_size_limit_kb_to_application_settings.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class AddElasticsearchIndexedFileSizeLimitKbToApplicationSettings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :application_settings,
+      :elasticsearch_indexed_file_size_limit_kb,
+      :integer,
+      null: false,
+      default: 1024 # 1 MiB (units in KiB)
+  end
+end
diff --git a/db/migrate/20200720154007_create_vulnerabilities_export_verification_status.rb b/db/migrate/20200720154007_create_vulnerabilities_export_verification_status.rb
new file mode 100644
index 00000000000..5cbb5fdd1e5
--- /dev/null
+++ b/db/migrate/20200720154007_create_vulnerabilities_export_verification_status.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+class CreateVulnerabilitiesExportVerificationStatus < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:vulnerability_export_verification_status)
+      with_lock_retries do
+        create_table :vulnerability_export_verification_status, id: false do |t|
+          t.references :vulnerability_export,
+            primary_key: true,
+            null: false,
+            foreign_key: { on_delete: :cascade },
+            index:
+              { name: 'index_vulnerability_export_verification_status_on_export_id' }
+          t.datetime_with_timezone :verification_retry_at
+          t.datetime_with_timezone :verified_at
+          t.integer :verification_retry_count, limit: 2
+          t.binary :verification_checksum, using: 'verification_checksum::bytea'
+          t.text :verification_failure
+
+          t.index :verification_failure, where: "(verification_failure IS NOT NULL)", name: "vulnerability_exports_verification_failure_partial"
+          t.index :verification_checksum, where: "(verification_checksum IS NOT NULL)", name: "vulnerability_exports_verification_checksum_partial"
+        end
+      end
+    end
+
+    add_text_limit :vulnerability_export_verification_status, :verification_failure, 255
+  end
+
+  def down
+    return unless table_exists?(:vulnerability_export_verification_status)
+
+    with_lock_retries do
+      drop_table :vulnerability_export_verification_status
+    end
+  end
+end
diff --git a/db/migrate/20200720154123_add_external_to_custom_emoji.rb b/db/migrate/20200720154123_add_external_to_custom_emoji.rb
new file mode 100644
index 00000000000..2a97235eec4
--- /dev/null
+++ b/db/migrate/20200720154123_add_external_to_custom_emoji.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddExternalToCustomEmoji < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :custom_emoji, :external, :boolean, default: true, null: false
+  end
+end
diff --git a/db/migrate/20200720191134_add_blocking_issues_count_to_issues.rb b/db/migrate/20200720191134_add_blocking_issues_count_to_issues.rb
new file mode 100644
index 00000000000..dbb43541ad6
--- /dev/null
+++ b/db/migrate/20200720191134_add_blocking_issues_count_to_issues.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+class AddBlockingIssuesCountToIssues < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_issue_on_project_id_state_id_and_blocking_issues_count'
+
+  disable_ddl_transaction!
+
+  def up
+    unless column_exists?(:issues, :blocking_issues_count)
+      with_lock_retries do
+        add_column :issues, :blocking_issues_count, :integer, default: 0, null: false
+      end
+    end
+
+    add_concurrent_index :issues, [:project_id, :state_id, :blocking_issues_count], name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :issues, INDEX_NAME
+
+    with_lock_retries do
+      remove_column :issues, :blocking_issues_count
+    end
+  end
+end
diff --git a/db/migrate/20200721034536_add_issue_type_to_issues.rb b/db/migrate/20200721034536_add_issue_type_to_issues.rb
new file mode 100644
index 00000000000..96ae8c421da
--- /dev/null
+++ b/db/migrate/20200721034536_add_issue_type_to_issues.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddIssueTypeToIssues < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      # Set default to issue type
+      add_column :issues, :issue_type, :integer, limit: 2, default: 0, null: false
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :issues, :issue_type
+    end
+  end
+end
diff --git a/db/migrate/20200721043502_add_issue_type_index_to_issues.rb b/db/migrate/20200721043502_add_issue_type_index_to_issues.rb
new file mode 100644
index 00000000000..2faad98d032
--- /dev/null
+++ b/db/migrate/20200721043502_add_issue_type_index_to_issues.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class AddIssueTypeIndexToIssues < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  disable_ddl_transaction!
+
+  INCIDENT_TYPE = 1
+  INDEX_NAME    = 'index_issues_on_incident_issue_type'
+
+  def up
+    add_concurrent_index :issues,
+                         :issue_type, where: "issue_type = #{INCIDENT_TYPE}",
+                         name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index :issues, :issue_type
+  end
+end
diff --git a/db/migrate/20200721052853_create_dast_scanner_profile.rb b/db/migrate/20200721052853_create_dast_scanner_profile.rb
new file mode 100644
index 00000000000..0dc0012d837
--- /dev/null
+++ b/db/migrate/20200721052853_create_dast_scanner_profile.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class CreateDastScannerProfile < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:dast_scanner_profiles)
+      with_lock_retries do
+        create_table :dast_scanner_profiles do |t|
+          t.timestamps_with_timezone null: false
+          t.references :project, null: false, index: false, foreign_key: { on_delete: :cascade }, type: :integer
+          t.integer :spider_timeout, limit: 2
+          t.integer :target_timeout, limit: 2
+          t.text :name, null: false
+          t.index [:project_id, :name], unique: true
+        end
+      end
+    end
+
+    add_text_limit(:dast_scanner_profiles, :name, 255)
+  end
+
+  def down
+    with_lock_retries do
+      drop_table :dast_scanner_profiles
+    end
+  end
+end
diff --git a/db/migrate/20200721230558_add_index_to_projects_aimed_for_deletion.rb b/db/migrate/20200721230558_add_index_to_projects_aimed_for_deletion.rb
new file mode 100644
index 00000000000..44dfe2ff3e1
--- /dev/null
+++ b/db/migrate/20200721230558_add_index_to_projects_aimed_for_deletion.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class AddIndexToProjectsAimedForDeletion < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  PROJECTS_AIMED_FOR_DELETION_INDEX_NAME = "index_projects_aimed_for_deletion"
+  MARKED_FOR_DELETION_PROJECTS_INDEX_NAME = "index_projects_on_marked_for_deletion_at"
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :projects,
+                         :marked_for_deletion_at,
+                         where: "marked_for_deletion_at IS NOT NULL AND pending_delete = false",
+                         name: PROJECTS_AIMED_FOR_DELETION_INDEX_NAME
+
+    remove_concurrent_index_by_name :projects, MARKED_FOR_DELETION_PROJECTS_INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :projects, PROJECTS_AIMED_FOR_DELETION_INDEX_NAME
+
+    add_concurrent_index :projects, :marked_for_deletion_at, where: 'marked_for_deletion_at IS NOT NULL'
+  end
+end
diff --git a/db/migrate/20200722075411_add_ci_needs_size_limit_to_plan_limit.rb b/db/migrate/20200722075411_add_ci_needs_size_limit_to_plan_limit.rb
new file mode 100644
index 00000000000..b615a09a61b
--- /dev/null
+++ b/db/migrate/20200722075411_add_ci_needs_size_limit_to_plan_limit.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddCiNeedsSizeLimitToPlanLimit < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :plan_limits, :ci_needs_size_limit, :integer, default: 50, null: false
+  end
+end
diff --git a/db/migrate/20200722084623_add_default_membership_role_to_saml_provider.rb b/db/migrate/20200722084623_add_default_membership_role_to_saml_provider.rb
new file mode 100644
index 00000000000..bd82aab1aae
--- /dev/null
+++ b/db/migrate/20200722084623_add_default_membership_role_to_saml_provider.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class AddDefaultMembershipRoleToSamlProvider < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  GUEST_USER_ROLE = 10
+
+  def change
+    add_column :saml_providers, :default_membership_role, :smallint, default: GUEST_USER_ROLE, null: false
+  end
+end
diff --git a/db/migrate/20200722091435_add_relative_position_to_design_management_designs.rb b/db/migrate/20200722091435_add_relative_position_to_design_management_designs.rb
new file mode 100644
index 00000000000..42b7a1d3898
--- /dev/null
+++ b/db/migrate/20200722091435_add_relative_position_to_design_management_designs.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddRelativePositionToDesignManagementDesigns < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :design_management_designs, :relative_position, :integer
+  end
+end
diff --git a/db/migrate/20200722131241_create_resource_iteration_events_table.rb b/db/migrate/20200722131241_create_resource_iteration_events_table.rb
new file mode 100644
index 00000000000..619faeaaadf
--- /dev/null
+++ b/db/migrate/20200722131241_create_resource_iteration_events_table.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class CreateResourceIterationEventsTable < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    create_table :resource_iteration_events do |t|
+      t.bigint :user_id, null: false, index: { name: 'index_resource_iteration_events_on_user_id' }
+      t.bigint :issue_id, null: true, index: { name: 'index_resource_iteration_events_on_issue_id' }
+      t.bigint :merge_request_id, null: true, index: { name: 'index_resource_iteration_events_on_merge_request_id' }
+      t.bigint :iteration_id, index: { name: 'index_resource_iteration_events_on_iteration_id' }
+      t.datetime_with_timezone :created_at, null: false
+      t.integer :action, limit: 2, null: false
+    end
+  end
+end
diff --git a/db/migrate/20200722132040_add_users_fk_to_resource_iteration_events_table.rb b/db/migrate/20200722132040_add_users_fk_to_resource_iteration_events_table.rb
new file mode 100644
index 00000000000..e28405be53d
--- /dev/null
+++ b/db/migrate/20200722132040_add_users_fk_to_resource_iteration_events_table.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddUsersFkToResourceIterationEventsTable < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :resource_iteration_events, :users, column: :user_id, on_delete: :nullify # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :resource_iteration_events, column: :user_id
+    end
+  end
+end
diff --git a/db/migrate/20200722132540_add_issues_fk_to_resource_iteration_events_table.rb b/db/migrate/20200722132540_add_issues_fk_to_resource_iteration_events_table.rb
new file mode 100644
index 00000000000..adb10aaa707
--- /dev/null
+++ b/db/migrate/20200722132540_add_issues_fk_to_resource_iteration_events_table.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddIssuesFkToResourceIterationEventsTable < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :resource_iteration_events, :issues, column: :issue_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :resource_iteration_events, column: :issue_id
+    end
+  end
+end
diff --git a/db/migrate/20200722133040_add_merge_requests_fk_to_resource_iteration_events_table.rb b/db/migrate/20200722133040_add_merge_requests_fk_to_resource_iteration_events_table.rb
new file mode 100644
index 00000000000..8b1859bb253
--- /dev/null
+++ b/db/migrate/20200722133040_add_merge_requests_fk_to_resource_iteration_events_table.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddMergeRequestsFkToResourceIterationEventsTable < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :resource_iteration_events, :merge_requests, column: :merge_request_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :resource_iteration_events, column: :merge_request_id
+    end
+  end
+end
diff --git a/db/migrate/20200722133540_add_iterations_fk_to_resource_iteration_events_table.rb b/db/migrate/20200722133540_add_iterations_fk_to_resource_iteration_events_table.rb
new file mode 100644
index 00000000000..b42c29a0634
--- /dev/null
+++ b/db/migrate/20200722133540_add_iterations_fk_to_resource_iteration_events_table.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddIterationsFkToResourceIterationEventsTable < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :resource_iteration_events, :sprints, column: :iteration_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :resource_iteration_events, column: :iteration_id
+    end
+  end
+end
diff --git a/db/migrate/20200723125205_add_target_project_id_to_mr_metrics.rb b/db/migrate/20200723125205_add_target_project_id_to_mr_metrics.rb
new file mode 100644
index 00000000000..fb01b3fe046
--- /dev/null
+++ b/db/migrate/20200723125205_add_target_project_id_to_mr_metrics.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddTargetProjectIdToMrMetrics < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_column :merge_request_metrics, :target_project_id, :integer
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :merge_request_metrics, :target_project_id, :integer
+    end
+  end
+end
diff --git a/db/migrate/20200723128332_add_fk_to_metrics_target_project_id.rb b/db/migrate/20200723128332_add_fk_to_metrics_target_project_id.rb
new file mode 100644
index 00000000000..6536b20b9c1
--- /dev/null
+++ b/db/migrate/20200723128332_add_fk_to_metrics_target_project_id.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddFkToMetricsTargetProjectId < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index(:merge_request_metrics, :target_project_id)
+    add_concurrent_foreign_key(:merge_request_metrics, :projects, column: :target_project_id, on_delete: :cascade)
+  end
+
+  def down
+    remove_foreign_key(:merge_request_metrics, column: :target_project_id)
+    remove_concurrent_index(:merge_request_metrics, :target_project_id)
+  end
+end
diff --git a/db/migrate/20200724100123_add_index_on_vulnerability_historical_statistics_date.rb b/db/migrate/20200724100123_add_index_on_vulnerability_historical_statistics_date.rb
new file mode 100644
index 00000000000..696f98b40f6
--- /dev/null
+++ b/db/migrate/20200724100123_add_index_on_vulnerability_historical_statistics_date.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddIndexOnVulnerabilityHistoricalStatisticsDate < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :vulnerability_historical_statistics, [:date, :id]
+  end
+
+  def down
+    remove_concurrent_index :vulnerability_historical_statistics, [:date, :id]
+  end
+end
diff --git a/db/migrate/20200727082309_remove_index_chat_name_service_id.rb b/db/migrate/20200727082309_remove_index_chat_name_service_id.rb
new file mode 100644
index 00000000000..49cda2dd41f
--- /dev/null
+++ b/db/migrate/20200727082309_remove_index_chat_name_service_id.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class RemoveIndexChatNameServiceId < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    remove_concurrent_index :chat_names, :service_id
+  end
+
+  def down
+    add_concurrent_index :chat_names, :service_id
+  end
+end
diff --git a/db/migrate/20200727142337_update_defaults_for_sca_artifacts.rb b/db/migrate/20200727142337_update_defaults_for_sca_artifacts.rb
new file mode 100644
index 00000000000..d745943a7d3
--- /dev/null
+++ b/db/migrate/20200727142337_update_defaults_for_sca_artifacts.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class UpdateDefaultsForScaArtifacts < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  DEPENDENCY_SCANNING_LIMIT_MB = 350
+  CONTAINER_SCANNING_LIMIT_MB = 150
+  LICENSE_SCANNING_LIMIT_MB = 100
+
+  def up
+    change_column_default :plan_limits, :ci_max_artifact_size_dependency_scanning, DEPENDENCY_SCANNING_LIMIT_MB
+    change_column_default :plan_limits, :ci_max_artifact_size_container_scanning, CONTAINER_SCANNING_LIMIT_MB
+    change_column_default :plan_limits, :ci_max_artifact_size_license_scanning, LICENSE_SCANNING_LIMIT_MB
+  end
+
+  def down
+    change_column_default :plan_limits, :ci_max_artifact_size_dependency_scanning, 0
+    change_column_default :plan_limits, :ci_max_artifact_size_container_scanning, 0
+    change_column_default :plan_limits, :ci_max_artifact_size_license_scanning, 0
+  end
+end
diff --git a/db/migrate/20200728080250_replace_unique_index_on_cycle_analytics_stages.rb b/db/migrate/20200728080250_replace_unique_index_on_cycle_analytics_stages.rb
new file mode 100644
index 00000000000..0e562ae27e2
--- /dev/null
+++ b/db/migrate/20200728080250_replace_unique_index_on_cycle_analytics_stages.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+class ReplaceUniqueIndexOnCycleAnalyticsStages < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  OLD_INDEX_NAME = 'index_analytics_ca_group_stages_on_group_id_and_name'
+  NEW_INDEX_NAME = 'index_group_stages_on_group_id_group_value_stream_id_and_name'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index(:analytics_cycle_analytics_group_stages,
+                         [:group_id, :group_value_stream_id, :name],
+                         unique: true,
+                         name: NEW_INDEX_NAME)
+
+    remove_concurrent_index_by_name :analytics_cycle_analytics_group_stages, OLD_INDEX_NAME
+  end
+
+  def down
+    # Removing duplicated records (group_id, name) that would prevent re-creating the old index.
+    execute <<-SQL
+      DELETE FROM analytics_cycle_analytics_group_stages
+      USING (
+        SELECT group_id, name, MIN(id) as min_id
+        FROM analytics_cycle_analytics_group_stages
+        GROUP BY group_id, name
+        HAVING COUNT(id) > 1
+      ) as analytics_cycle_analytics_group_stages_name_duplicates
+      WHERE analytics_cycle_analytics_group_stages_name_duplicates.group_id = analytics_cycle_analytics_group_stages.group_id
+      AND analytics_cycle_analytics_group_stages_name_duplicates.name = analytics_cycle_analytics_group_stages.name
+      AND analytics_cycle_analytics_group_stages_name_duplicates.min_id <> analytics_cycle_analytics_group_stages.id
+    SQL
+
+    add_concurrent_index(:analytics_cycle_analytics_group_stages,
+                         [:group_id, :name],
+                         unique: true,
+                         name: OLD_INDEX_NAME)
+
+    remove_concurrent_index_by_name :analytics_cycle_analytics_group_stages, NEW_INDEX_NAME
+  end
+end
diff --git a/db/migrate/20200728163009_add_deployment_events_to_web_hooks.rb b/db/migrate/20200728163009_add_deployment_events_to_web_hooks.rb
new file mode 100644
index 00000000000..b1bf9560bcc
--- /dev/null
+++ b/db/migrate/20200728163009_add_deployment_events_to_web_hooks.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddDeploymentEventsToWebHooks < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :web_hooks, :deployment_events, :boolean, null: false, default: false
+  end
+end
diff --git a/db/migrate/20200728174137_add_index_on_design_management_designs_issue_id_and_relative_position_and_id.rb b/db/migrate/20200728174137_add_index_on_design_management_designs_issue_id_and_relative_position_and_id.rb
new file mode 100644
index 00000000000..140c344e837
--- /dev/null
+++ b/db/migrate/20200728174137_add_index_on_design_management_designs_issue_id_and_relative_position_and_id.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class AddIndexOnDesignManagementDesignsIssueIdAndRelativePositionAndId < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_design_management_designs_issue_id_relative_position_id'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :design_management_designs, [:issue_id, :relative_position, :id], name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index :design_management_designs, [:issue_id, :relative_position, :id], name: INDEX_NAME
+  end
+end
diff --git a/db/migrate/20200728175710_add_enforce_namespace_storage_limit_to_application_settings.rb b/db/migrate/20200728175710_add_enforce_namespace_storage_limit_to_application_settings.rb
new file mode 100644
index 00000000000..adbc86ec621
--- /dev/null
+++ b/db/migrate/20200728175710_add_enforce_namespace_storage_limit_to_application_settings.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddEnforceNamespaceStorageLimitToApplicationSettings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :application_settings, :enforce_namespace_storage_limit, :boolean, default: false, null: false
+  end
+end
diff --git a/db/migrate/20200729151021_add_after_expiry_notification_delivered_to_personal_access_tokens.rb b/db/migrate/20200729151021_add_after_expiry_notification_delivered_to_personal_access_tokens.rb
new file mode 100644
index 00000000000..001436b7285
--- /dev/null
+++ b/db/migrate/20200729151021_add_after_expiry_notification_delivered_to_personal_access_tokens.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class AddAfterExpiryNotificationDeliveredToPersonalAccessTokens < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def change
+    add_column :personal_access_tokens, :after_expiry_notification_delivered, :boolean, null: false, default: false
+  end
+end
diff --git a/db/migrate/20200729175935_add_dashboard_path_to_prometheus_metrics.rb b/db/migrate/20200729175935_add_dashboard_path_to_prometheus_metrics.rb
new file mode 100644
index 00000000000..0562e8d1c14
--- /dev/null
+++ b/db/migrate/20200729175935_add_dashboard_path_to_prometheus_metrics.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class AddDashboardPathToPrometheusMetrics < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def up
+    # Text limit is added in 20200730210506_add_text_limit_to_dashboard_path
+    add_column :prometheus_metrics, :dashboard_path, :text # rubocop:disable Migration/AddLimitToTextColumns
+  end
+
+  def down
+    remove_column :prometheus_metrics, :dashboard_path
+  end
+end
diff --git a/db/migrate/20200729180539_add_can_push_to_group_deploy_keys_groups.rb b/db/migrate/20200729180539_add_can_push_to_group_deploy_keys_groups.rb
new file mode 100644
index 00000000000..3412790c20c
--- /dev/null
+++ b/db/migrate/20200729180539_add_can_push_to_group_deploy_keys_groups.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddCanPushToGroupDeployKeysGroups < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :group_deploy_keys_groups, :can_push, :boolean, default: false, null: false
+  end
+end
diff --git a/db/migrate/20200729181641_add_index_to_resource_milestone_events_add_events.rb b/db/migrate/20200729181641_add_index_to_resource_milestone_events_add_events.rb
new file mode 100644
index 00000000000..438f9c6bfa3
--- /dev/null
+++ b/db/migrate/20200729181641_add_index_to_resource_milestone_events_add_events.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class AddIndexToResourceMilestoneEventsAddEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  INDEX_NAME = 'index_resource_milestone_events_on_milestone_id_and_add_action'
+  ADD_ACTION = '1'
+
+  def up
+    # Index add milestone events
+    add_concurrent_index :resource_milestone_events, :milestone_id, where: "action = #{ADD_ACTION}", name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index :resource_milestone_events, :milestone_id, name: INDEX_NAME
+  end
+end
diff --git a/db/migrate/20200729191227_add_runbook_to_prometheus_alert.rb b/db/migrate/20200729191227_add_runbook_to_prometheus_alert.rb
new file mode 100644
index 00000000000..a45b6eab1ee
--- /dev/null
+++ b/db/migrate/20200729191227_add_runbook_to_prometheus_alert.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class AddRunbookToPrometheusAlert < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def up
+    # limit is added in 20200501000002_add_text_limit_to_sprints_extended_title
+    add_column :prometheus_alerts, :runbook_url, :text # rubocop:disable Migration/AddLimitToTextColumns
+  end
+
+  def down
+    remove_column :prometheus_alerts, :runbook_url
+  end
+end
diff --git a/db/migrate/20200729200808_add_text_limit_to_runbook_on_prometheus_alerts.rb b/db/migrate/20200729200808_add_text_limit_to_runbook_on_prometheus_alerts.rb
new file mode 100644
index 00000000000..010b53ab35e
--- /dev/null
+++ b/db/migrate/20200729200808_add_text_limit_to_runbook_on_prometheus_alerts.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class AddTextLimitToRunbookOnPrometheusAlerts < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_text_limit :prometheus_alerts, :runbook_url, 255
+  end
+
+  def down
+    remove_text_limit :prometheus_alerts, :runbook_url
+  end
+end
diff --git a/db/migrate/20200729202222_add_index_to_ci_pipeline_project_id_created_at.rb b/db/migrate/20200729202222_add_index_to_ci_pipeline_project_id_created_at.rb
new file mode 100644
index 00000000000..d1ee9c49d30
--- /dev/null
+++ b/db/migrate/20200729202222_add_index_to_ci_pipeline_project_id_created_at.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddIndexToCiPipelineProjectIdCreatedAt < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :ci_pipelines, [:project_id, :created_at]
+  end
+
+  def down
+    remove_concurrent_index :ci_pipelines, [:project_id, :created_at]
+  end
+end
diff --git a/db/migrate/20200730044810_add_indexes_to_resource_label_events_to_support_vsa.rb b/db/migrate/20200730044810_add_indexes_to_resource_label_events_to_support_vsa.rb
new file mode 100644
index 00000000000..ba114e81618
--- /dev/null
+++ b/db/migrate/20200730044810_add_indexes_to_resource_label_events_to_support_vsa.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class AddIndexesToResourceLabelEventsToSupportVsa < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  NEW_INDEX_NAME_ON_ISSUE_ID = 'index_resource_label_events_issue_id_label_id_action'
+  OLD_INDEX_NAME_ON_ISSUE_ID = 'index_resource_label_events_on_issue_id'
+
+  NEW_INDEX_NAME_ON_MERGE_REQUEST_ID = 'index_resource_label_events_on_merge_request_id_label_id_action'
+  OLD_INDEX_NAME_ON_MERGE_REQUEST_ID = 'index_resource_label_events_on_merge_request_id'
+
+  def up
+    add_concurrent_index :resource_label_events, [:issue_id, :label_id, :action], name: NEW_INDEX_NAME_ON_ISSUE_ID
+    remove_concurrent_index_by_name :resource_label_events, OLD_INDEX_NAME_ON_ISSUE_ID
+
+    add_concurrent_index :resource_label_events, [:merge_request_id, :label_id, :action], name: NEW_INDEX_NAME_ON_MERGE_REQUEST_ID
+    remove_concurrent_index_by_name :resource_label_events, OLD_INDEX_NAME_ON_MERGE_REQUEST_ID
+  end
+
+  def down
+    add_concurrent_index :resource_label_events, :issue_id, name: OLD_INDEX_NAME_ON_ISSUE_ID
+    remove_concurrent_index_by_name(:resource_label_events, NEW_INDEX_NAME_ON_ISSUE_ID)
+
+    add_concurrent_index :resource_label_events, :merge_request_id, name: OLD_INDEX_NAME_ON_MERGE_REQUEST_ID
+    remove_concurrent_index_by_name(:resource_label_events, NEW_INDEX_NAME_ON_MERGE_REQUEST_ID)
+  end
+end
diff --git a/db/migrate/20200730083043_replace_index_for_service_usage_data.rb b/db/migrate/20200730083043_replace_index_for_service_usage_data.rb
new file mode 100644
index 00000000000..0d3012c319d
--- /dev/null
+++ b/db/migrate/20200730083043_replace_index_for_service_usage_data.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class ReplaceIndexForServiceUsageData < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  OLD_INDEX_NAME = 'index_services_on_type_and_id_and_template_when_active'
+  NEW_INDEX_NAME = 'index_services_on_type_id_when_active_not_instance_not_template'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :services, [:type, :id], where: 'active = TRUE AND instance = FALSE AND template = FALSE', name: NEW_INDEX_NAME
+
+    remove_concurrent_index_by_name :services, OLD_INDEX_NAME
+  end
+
+  def down
+    add_concurrent_index :services, [:type, :id, :template], where: 'active = TRUE', name: OLD_INDEX_NAME
+
+    remove_concurrent_index :services, NEW_INDEX_NAME
+  end
+end
diff --git a/db/migrate/20200730131946_add_hide_lists_to_boards.rb b/db/migrate/20200730131946_add_hide_lists_to_boards.rb
new file mode 100644
index 00000000000..e431ea852a7
--- /dev/null
+++ b/db/migrate/20200730131946_add_hide_lists_to_boards.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+class AddHideListsToBoards < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :boards, :hide_backlog_list, :boolean, default: false, null: false
+    add_column :boards, :hide_closed_list, :boolean, default: false, null: false
+  end
+end
diff --git a/db/migrate/20200730210506_add_text_limit_to_dashboard_path.rb b/db/migrate/20200730210506_add_text_limit_to_dashboard_path.rb
new file mode 100644
index 00000000000..a236cc68988
--- /dev/null
+++ b/db/migrate/20200730210506_add_text_limit_to_dashboard_path.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddTextLimitToDashboardPath < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_text_limit(:prometheus_metrics, :dashboard_path, 2048)
+  end
+
+  def down
+    remove_text_limit(:prometheus_metrics, :dashboard_path)
+  end
+end
diff --git a/db/migrate/20200731085019_create_experiment.rb b/db/migrate/20200731085019_create_experiment.rb
new file mode 100644
index 00000000000..cd326e0958f
--- /dev/null
+++ b/db/migrate/20200731085019_create_experiment.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class CreateExperiment < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:experiments)
+      create_table :experiments do |t|
+        t.text :name, null: false
+
+        t.index :name, unique: true
+      end
+    end
+
+    add_text_limit :experiments, :name, 255
+  end
+
+  def down
+    drop_table :experiments
+  end
+end
diff --git a/db/migrate/20200731090553_create_experiment_user.rb b/db/migrate/20200731090553_create_experiment_user.rb
new file mode 100644
index 00000000000..9080429dfd3
--- /dev/null
+++ b/db/migrate/20200731090553_create_experiment_user.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class CreateExperimentUser < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def up
+    create_table :experiment_users do |t|
+      t.bigint :experiment_id, null: false
+      t.bigint :user_id, null: false
+      t.integer :group_type, limit: 2, null: false, default: 0
+      t.timestamps_with_timezone null: false
+    end
+
+    add_index :experiment_users, :experiment_id
+    add_index :experiment_users, :user_id
+  end
+
+  def down
+    drop_table :experiment_users
+  end
+end
diff --git a/db/migrate/20200731201408_add_foreign_key_to_experiment_on_experiment_users.rb b/db/migrate/20200731201408_add_foreign_key_to_experiment_on_experiment_users.rb
new file mode 100644
index 00000000000..3961803bf52
--- /dev/null
+++ b/db/migrate/20200731201408_add_foreign_key_to_experiment_on_experiment_users.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToExperimentOnExperimentUsers < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      # There is no need to use add_concurrent_foreign_key since it's an empty table
+      add_foreign_key :experiment_users, :experiments, column: :experiment_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :experiment_users, column: :experiment_id
+    end
+  end
+end
diff --git a/db/migrate/20200731201834_add_foreign_key_to_user_on_experiment_users.rb b/db/migrate/20200731201834_add_foreign_key_to_user_on_experiment_users.rb
new file mode 100644
index 00000000000..42c337fecff
--- /dev/null
+++ b/db/migrate/20200731201834_add_foreign_key_to_user_on_experiment_users.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToUserOnExperimentUsers < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      # There is no need to use add_concurrent_foreign_key since it's an empty table
+      add_foreign_key :experiment_users, :users, column: :user_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :experiment_users, column: :user_id
+    end
+  end
+end
diff --git a/db/migrate/20200803111512_add_group_id_to_services.rb b/db/migrate/20200803111512_add_group_id_to_services.rb
new file mode 100644
index 00000000000..7d4a0ef4dd5
--- /dev/null
+++ b/db/migrate/20200803111512_add_group_id_to_services.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddGroupIdToServices < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :services, :group_id, :bigint
+  end
+end
diff --git a/db/migrate/20200803112806_add_index_group_id_to_services.rb b/db/migrate/20200803112806_add_index_group_id_to_services.rb
new file mode 100644
index 00000000000..145009672ef
--- /dev/null
+++ b/db/migrate/20200803112806_add_index_group_id_to_services.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class AddIndexGroupIdToServices < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_services_on_unique_group_id_and_type'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :services, [:group_id, :type], unique: true, name: INDEX_NAME
+
+    add_concurrent_foreign_key :services, :namespaces, column: :group_id
+  end
+
+  def down
+    remove_foreign_key_if_exists :services, column: :group_id
+
+    remove_concurrent_index_by_name :services, INDEX_NAME
+  end
+end
diff --git a/db/migrate/20200803125340_create_raw_usage_data.rb b/db/migrate/20200803125340_create_raw_usage_data.rb
new file mode 100644
index 00000000000..f1c23a7b0f5
--- /dev/null
+++ b/db/migrate/20200803125340_create_raw_usage_data.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class CreateRawUsageData < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    unless table_exists?(:raw_usage_data)
+      create_table :raw_usage_data do |t|
+        t.timestamps_with_timezone
+        t.datetime_with_timezone :recorded_at, null: false
+        t.datetime_with_timezone :sent_at
+        t.jsonb :payload, null: false
+
+        t.index [:recorded_at], unique: true
+      end
+    end
+  end
+
+  def down
+    drop_table :raw_usage_data
+  end
+end
diff --git a/db/migrate/20200804041018_add_default_value_for_external_diff_store_to_merge_request_diffs.rb b/db/migrate/20200804041018_add_default_value_for_external_diff_store_to_merge_request_diffs.rb
new file mode 100644
index 00000000000..1a565fef125
--- /dev/null
+++ b/db/migrate/20200804041018_add_default_value_for_external_diff_store_to_merge_request_diffs.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddDefaultValueForExternalDiffStoreToMergeRequestDiffs < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      change_column_default :merge_request_diffs, :external_diff_store, 1
+    end
+  end
+
+  def down
+    with_lock_retries do
+      change_column_default :merge_request_diffs, :external_diff_store, nil
+    end
+  end
+end
diff --git a/db/migrate/20200804222543_add_resolved_on_default_branch_into_vulnerabilities_table.rb b/db/migrate/20200804222543_add_resolved_on_default_branch_into_vulnerabilities_table.rb
new file mode 100644
index 00000000000..afb97871575
--- /dev/null
+++ b/db/migrate/20200804222543_add_resolved_on_default_branch_into_vulnerabilities_table.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class AddResolvedOnDefaultBranchIntoVulnerabilitiesTable < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    change_table :vulnerabilities do |t|
+      t.boolean :resolved_on_default_branch, default: false, null: false
+    end
+  end
+end
diff --git a/db/migrate/20200805071842_add_index_on_end_date_and_namespace_id_to_gitlab_subscriptions.rb b/db/migrate/20200805071842_add_index_on_end_date_and_namespace_id_to_gitlab_subscriptions.rb
new file mode 100644
index 00000000000..17b92b6b8a8
--- /dev/null
+++ b/db/migrate/20200805071842_add_index_on_end_date_and_namespace_id_to_gitlab_subscriptions.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddIndexOnEndDateAndNamespaceIdToGitlabSubscriptions < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :gitlab_subscriptions, [:end_date, :namespace_id]
+  end
+
+  def down
+    remove_concurrent_index :gitlab_subscriptions, [:end_date, :namespace_id]
+  end
+end
diff --git a/db/migrate/20200805150316_create_ci_pipeline_artifact.rb b/db/migrate/20200805150316_create_ci_pipeline_artifact.rb
new file mode 100644
index 00000000000..01995972011
--- /dev/null
+++ b/db/migrate/20200805150316_create_ci_pipeline_artifact.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class CreateCiPipelineArtifact < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:ci_pipeline_artifacts)
+      create_table :ci_pipeline_artifacts do |t|
+        t.timestamps_with_timezone
+        t.bigint :pipeline_id, null: false, index: true
+        t.bigint :project_id, null: false, index: true
+        t.integer :size, null: false
+        t.integer :file_store, null: false, limit: 2
+        t.integer :file_type, null: false, limit: 2
+        t.integer :file_format, null: false, limit: 2
+        t.text :file
+
+        t.index [:pipeline_id, :file_type], unique: true
+      end
+    end
+
+    add_text_limit :ci_pipeline_artifacts, :file, 255
+  end
+
+  def down
+    drop_table :ci_pipeline_artifacts
+  end
+end
diff --git a/db/migrate/20200805151001_add_foreign_key_to_pipeline_id_on_pipeline_artifact.rb b/db/migrate/20200805151001_add_foreign_key_to_pipeline_id_on_pipeline_artifact.rb
new file mode 100644
index 00000000000..d6c3a4fe742
--- /dev/null
+++ b/db/migrate/20200805151001_add_foreign_key_to_pipeline_id_on_pipeline_artifact.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToPipelineIdOnPipelineArtifact < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :ci_pipeline_artifacts, :ci_pipelines, column: :pipeline_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :ci_pipeline_artifacts, column: :pipeline_id
+    end
+  end
+end
diff --git a/db/migrate/20200805151726_add_foreign_key_to_project_id_on_pipeline_artifact.rb b/db/migrate/20200805151726_add_foreign_key_to_project_id_on_pipeline_artifact.rb
new file mode 100644
index 00000000000..367a2774d62
--- /dev/null
+++ b/db/migrate/20200805151726_add_foreign_key_to_project_id_on_pipeline_artifact.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToProjectIdOnPipelineArtifact < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :ci_pipeline_artifacts, :projects, column: :project_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :ci_pipeline_artifacts, column: :project_id
+    end
+  end
+end
diff --git a/db/migrate/20200806004232_add_default_value_for_file_store_to_package_files.rb b/db/migrate/20200806004232_add_default_value_for_file_store_to_package_files.rb
new file mode 100644
index 00000000000..06f033891fc
--- /dev/null
+++ b/db/migrate/20200806004232_add_default_value_for_file_store_to_package_files.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddDefaultValueForFileStoreToPackageFiles < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      change_column_default :packages_package_files, :file_store, 1
+    end
+  end
+
+  def down
+    with_lock_retries do
+      change_column_default :packages_package_files, :file_store, nil
+    end
+  end
+end
diff --git a/db/migrate/20200807070820_add_index_for_compliance_merged_merge_request_to_events.rb b/db/migrate/20200807070820_add_index_for_compliance_merged_merge_request_to_events.rb
new file mode 100644
index 00000000000..4650437056e
--- /dev/null
+++ b/db/migrate/20200807070820_add_index_for_compliance_merged_merge_request_to_events.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddIndexForComplianceMergedMergeRequestToEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_events_on_project_id_and_id_desc_on_merged_action'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :events, [:project_id, :id],
+      order: { id: :desc },
+      where: "action = 7", name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :events, INDEX_NAME
+  end
+end
diff --git a/db/migrate/20200807132726_add_delete_original_index_at_to_reindexing_tasks.rb b/db/migrate/20200807132726_add_delete_original_index_at_to_reindexing_tasks.rb
new file mode 100644
index 00000000000..435b2a45e85
--- /dev/null
+++ b/db/migrate/20200807132726_add_delete_original_index_at_to_reindexing_tasks.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddDeleteOriginalIndexAtToReindexingTasks < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_column :elastic_reindexing_tasks, :delete_original_index_at, :datetime_with_timezone
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :elastic_reindexing_tasks, :delete_original_index_at
+    end
+  end
+end
diff --git a/db/migrate/20200807150937_add_file_count_to_merge_request_diffs.rb b/db/migrate/20200807150937_add_file_count_to_merge_request_diffs.rb
new file mode 100644
index 00000000000..3afc246d698
--- /dev/null
+++ b/db/migrate/20200807150937_add_file_count_to_merge_request_diffs.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class AddFileCountToMergeRequestDiffs < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      add_column :merge_request_diffs, :files_count, :smallint
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :merge_request_diffs, :files_count, :smallint
+    end
+  end
+end
diff --git a/db/migrate/20200810152043_add_expire_at_to_ci_pipeline_artifact.rb b/db/migrate/20200810152043_add_expire_at_to_ci_pipeline_artifact.rb
new file mode 100644
index 00000000000..1aaa0f36f16
--- /dev/null
+++ b/db/migrate/20200810152043_add_expire_at_to_ci_pipeline_artifact.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddExpireAtToCiPipelineArtifact < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :ci_pipeline_artifacts, :expire_at, :datetime_with_timezone
+  end
+end
diff --git a/db/migrate/20200811055018_remove_not_null_constraint_on_type_from_audit_events.rb b/db/migrate/20200811055018_remove_not_null_constraint_on_type_from_audit_events.rb
new file mode 100644
index 00000000000..25c3ef71655
--- /dev/null
+++ b/db/migrate/20200811055018_remove_not_null_constraint_on_type_from_audit_events.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class RemoveNotNullConstraintOnTypeFromAuditEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  # To avoid deadlock on audit_event and audit_event_part... since there is a trigger to insert record from audit_events
+  # to audit_events_part..., we need to ensure each ALTER TABLE command run in its own transaction.
+  def up
+    with_lock_retries do
+      change_column_null :audit_events_part_5fc467ac26, :type, true
+    end
+
+    with_lock_retries do
+      change_column_null :audit_events, :type, true
+    end
+  end
+
+  def down
+    # no-op -- null values might be added after this constraint is removed.
+  end
+end
diff --git a/db/migrate/20200811194848_add_default_value_for_file_store_to_pipeline_artifact.rb b/db/migrate/20200811194848_add_default_value_for_file_store_to_pipeline_artifact.rb
new file mode 100644
index 00000000000..f689a505809
--- /dev/null
+++ b/db/migrate/20200811194848_add_default_value_for_file_store_to_pipeline_artifact.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddDefaultValueForFileStoreToPipelineArtifact < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  PIPELINE_ARTIFACT_LOCAL_FILE_STORE = 1
+
+  def up
+    with_lock_retries do
+      change_column_default :ci_pipeline_artifacts, :file_store, PIPELINE_ARTIFACT_LOCAL_FILE_STORE
+    end
+  end
+
+  def down
+    with_lock_retries do
+      change_column_default :ci_pipeline_artifacts, :file_store, nil
+    end
+  end
+end
diff --git a/db/migrate/20200812112204_add_index_to_mr_metrics_target_project_id.rb b/db/migrate/20200812112204_add_index_to_mr_metrics_target_project_id.rb
new file mode 100644
index 00000000000..da483e7222c
--- /dev/null
+++ b/db/migrate/20200812112204_add_index_to_mr_metrics_target_project_id.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class AddIndexToMrMetricsTargetProjectId < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_merge_request_metrics_on_target_project_id_merged_at'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :merge_request_metrics, [:target_project_id, :merged_at], name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name(:merge_request_metrics, INDEX_NAME)
+  end
+end
diff --git a/db/migrate/20200813143304_add_new_external_diff_migration_index.rb b/db/migrate/20200813143304_add_new_external_diff_migration_index.rb
new file mode 100644
index 00000000000..64611e4f50a
--- /dev/null
+++ b/db/migrate/20200813143304_add_new_external_diff_migration_index.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class AddNewExternalDiffMigrationIndex < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_merge_request_diffs_by_id_partial'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index(
+      :merge_request_diffs,
+      :id,
+      name: INDEX_NAME,
+      where: 'files_count > 0 AND ((NOT stored_externally) OR (stored_externally IS NULL))'
+    )
+  end
+
+  def down
+    remove_concurrent_index_by_name(:merge_request_diffs, INDEX_NAME)
+  end
+end
diff --git a/db/migrate/20200813143356_remove_old_external_diff_migration_index.rb b/db/migrate/20200813143356_remove_old_external_diff_migration_index.rb
new file mode 100644
index 00000000000..9b466f8734f
--- /dev/null
+++ b/db/migrate/20200813143356_remove_old_external_diff_migration_index.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class RemoveOldExternalDiffMigrationIndex < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    remove_concurrent_index_by_name(
+      :merge_request_diffs,
+      'index_merge_request_diffs_on_merge_request_id_and_id_partial'
+    )
+  end
+
+  def down
+    add_concurrent_index(
+      :merge_request_diffs,
+      [:merge_request_id, :id],
+      where: { stored_externally: [nil, false] }
+    )
+  end
+end
diff --git a/db/migrate/20200817142800_add_pipeline_artifacts_size_to_project_statistics.rb b/db/migrate/20200817142800_add_pipeline_artifacts_size_to_project_statistics.rb
new file mode 100644
index 00000000000..a15d94a41b7
--- /dev/null
+++ b/db/migrate/20200817142800_add_pipeline_artifacts_size_to_project_statistics.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddPipelineArtifactsSizeToProjectStatistics < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_column :project_statistics, :pipeline_artifacts_size, :bigint, default: 0, null: false
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :project_statistics, :pipeline_artifacts_size, :bigint, default: 0, null: false
+    end
+  end
+end