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---
# This playbook does a rolling update for all webservers serially (one at a time).
# Change the value of serial: to adjust the number of server to be updated.
#
# The three roles that apply to the webserver hosts will be applied: common,
# base-apache, and web. So any changes to configuration, package updates, etc,
# will be applied as part of the rolling update process.
#
# gather facts from monitoring nodes for iptables rules
- hosts: tag_ansible_group_monitoring
tasks: []
- hosts: tag_ansible_group_webservers
serial: 1
# These are the tasks to run before applying updates:
pre_tasks:
- name: disable nagios alerts for this host webserver service
nagios: 'action=disable_alerts host={{ inventory_hostname }} services=webserver'
delegate_to: "{{ item }}"
with_items: groups.tag_ansible_group_monitoring
- name: disable the server in haproxy
haproxy: 'state=disabled backend=myapplb host={{ inventory_hostname }} socket=/var/lib/haproxy/stats'
delegate_to: "{{ item }}"
with_items: groups.tag_ansible_group_lbservers
roles:
- web
## Optionally, re-run the common and base-apache roles
#- common
#- base-apache
# These tasks run after the roles:
post_tasks:
- name: wait for webserver to come up
wait_for: 'host={{ inventory_hostname }} port=80 state=started timeout=80'
- name: enable the server in haproxy
haproxy: 'state=enabled backend=myapplb host={{ inventory_hostname }} socket=/var/lib/haproxy/stats'
delegate_to: "{{ item }}"
with_items: groups.tag_ansible_group_lbservers
- name: re-enable nagios alerts
nagios: 'action=enable_alerts host={{ inventory_hostname }} services=webserver'
delegate_to: "{{ item }}"
with_items: groups.tag_ansible_group_monitoring
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