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|
# This is a pre-release of a Helm 2to3 migration template to facilitate
# the migration of Auto DevOps releases to Helm 3.
#
# To use, set the CI variable MIGRATE_HELM_2TO3 to "true".
# For more details, go to https://docs.gitlab.com/ee/topics/autodevops/upgrading_auto_deploy_dependencies.html#helm-v3
.helm-2to3-migrate:
image: registry.gitlab.com/gitlab-org/cluster-integration/helm-install-image/releases/helm-2to3-2.17.0-3.5.3-kube-1.16.15-alpine-3.12
# NOTE: We use the deploy stage because:
# - It exists in all versions of Auto DevOps.
# - It is _empty_.
# - It precedes any Kubernetes deployments.
# Users on older versions of GitLab can include this template without adjusting their stages.
stage: deploy
needs: []
artifacts:
when: always
expire_in: 1 week
paths:
- helm-2-release-backups/
before_script:
- mkdir helm-2-release-backups
- apk add jq
- export TILLER_NAMESPACE=$KUBE_NAMESPACE
- export HELM_HOST="localhost:44134"
- nohup tiller -listen "${HELM_HOST}" >tiller.log 2>&1 &
- helm2 init --client-only
script:
# check for releases
- releases=$(helm2 ls --output json | jq -r '.Releases[].Name')
# back up entire namespace if the user opts into it
- |
if [[ -n "$releases" && -n "$BACKUP_HELM2_RELEASES" ]]; then
echo "Backing up releases"
kubectl get configmap -n "$KUBE_NAMESPACE" -l "OWNER=TILLER" -o yaml > "helm-2-release-backups/$KUBE_NAMESPACE.yaml"
fi
# adopt manifests from each release
- |
for release in $releases; do
chart=$(helm2 ls "^$release\$" --output json | jq -r '.Releases[0].Chart')
echo "Adopting Helm v2 manifests from $release"
# some resource kinds must be listed explicitly https://github.com/kubernetes/kubernetes/issues/42885
for name in $(kubectl -n "$KUBE_NAMESPACE" get all,ingress,daemonset -o name -l chart="$chart"); do
kubectl annotate -n "$KUBE_NAMESPACE" --overwrite "$name" meta.helm.sh/release-name="$release"
kubectl annotate -n "$KUBE_NAMESPACE" --overwrite "$name" meta.helm.sh/release-namespace="$KUBE_NAMESPACE"
kubectl label -n "$KUBE_NAMESPACE" --overwrite "$name" app.kubernetes.io/managed-by=Helm
done
done
# migrate each release
- |
for release in $releases; do
echo "Migrating release: $release"
helm3 2to3 convert --ignore-already-migrated --release-storage configmaps --tiller-out-cluster --tiller-ns "$TILLER_NAMESPACE" "$release"
done
.helm-2to3-cleanup:
image: registry.gitlab.com/gitlab-org/cluster-integration/helm-install-image/releases/helm-2to3-2.17.0-3.5.3-kube-1.16.15-alpine-3.12
stage: cleanup
environment:
action: prepare
before_script:
- export TILLER_NAMESPACE=$KUBE_NAMESPACE
- export HELM_HOST="localhost:44134"
- nohup tiller -listen "${HELM_HOST}" >tiller.log 2>&1 &
- helm2 init --client-only
script:
- helm3 2to3 cleanup --skip-confirmation --release-storage configmaps --tiller-out-cluster --tiller-ns "$TILLER_NAMESPACE"
.review:
environment:
name: review/$CI_COMMIT_REF_NAME
rules:
- if: '$MIGRATE_HELM_2TO3 != "true"'
when: never
- if: '$CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == ""'
when: never
- if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
when: never
- if: '$REVIEW_DISABLED'
when: never
- if: '$CI_COMMIT_TAG || $CI_COMMIT_BRANCH'
when: manual
review:helm-2to3:migrate:
extends: [.review, .helm-2to3-migrate]
review:helm-2to3:cleanup:
extends: [.review, .helm-2to3-cleanup]
rules:
- if: '$MIGRATE_HELM_2TO3 != "true" && $CLEANUP_HELM_2TO3 == null'
when: never
- if: '$CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == ""'
when: never
- if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
when: never
- if: '$REVIEW_DISABLED'
when: never
- if: '$CI_COMMIT_TAG || $CI_COMMIT_BRANCH'
when: manual
.staging:
environment:
name: staging
rules:
- if: '$MIGRATE_HELM_2TO3 != "true"'
when: never
- if: '$CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == ""'
when: never
- if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
when: never
- if: '$STAGING_ENABLED'
when: manual
staging:helm-2to3:migrate:
extends: [.staging, .helm-2to3-migrate]
staging:helm-2to3:cleanup:
extends: [.staging, .helm-2to3-cleanup]
rules:
- if: '$MIGRATE_HELM_2TO3 != "true" && $CLEANUP_HELM_2TO3 == null'
when: never
- if: '$CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == ""'
when: never
- if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
when: never
- if: '$STAGING_ENABLED'
when: manual
.production:
environment:
name: production
rules:
- if: '$MIGRATE_HELM_2TO3 != "true"'
when: never
- if: '$CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == ""'
when: never
- if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
when: manual
production:helm-2to3:migrate:
extends: [.production, .helm-2to3-migrate]
production:helm-2to3:cleanup:
extends: [.production, .helm-2to3-cleanup]
rules:
- if: '$MIGRATE_HELM_2TO3 != "true" && $CLEANUP_HELM_2TO3 == null'
when: never
- if: '$CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == ""'
when: never
- if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
when: manual
|
