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Ansible and handler precedence

I had an unexpected handler execution sequence not consistent with the notify order, it happens it is not related to the notify ordering but the handler declaration order which one can't manage properly with imports, at least I can't find how. One must need inheritance of roles to achieve proper ordering of handlers.

https://raymii.org/s/tutorials/Ansible_-_Only-do-something-if-another-action-changed.html

ansible how to have monitor many JVM on a same host

Create fragments with template module then assmble them with assemble module

In datadog agent configuration folder

/etc/dd-agent/conf.d/jmx/fragment.0.header.yaml
/etc/dd-agent/conf.d/jmx/fragment.roleApp1.yaml
/etc/dd-agent/conf.d/jmx/fragment.roleApp2.yaml

assemble to
/etc/dd-agent/conf.d/jmx.yaml

RoleApp1

- name: datadog
  template: src=datadog-jmx.j2.yaml dest=/etc/dd-agent/conf.d/jmx/fragment.roleApp1.yaml
  notify: datadog assemble jmx

datadog handlers

- name: datadog prepare assemble jmx
  template:
    src: datadog-jmx.j2.yaml
    dest: /etc/dd-agent/conf.d/jmx/fragment.0.header.yaml # Files are assembled in string sorting order
  listen: datadog assemble jmx

- name: datadog do assemble jmx
  assemble:
    src: /etc/dd-agent/conf.d/jmx
    dest: /etc/dd-agent/conf.d/jmx.yaml
    regexp: ".*\\.yaml"
    delimiter: '### START FRAGMENT ###'
    backup: yes
  listen: datadog assemble jmx

provide programmatically a dictionnary for docker_container.etc_hosts

- name : start
  docker_container:
    name: ckh
    image: registry.mycompany.com:5000/ica/clickhouse:{{ TAG }}
    state: started
    ports:
    - "8123:8123"
    - "9000:9000"
    - "9009:9009"
    volumes:
    - /opt/clickhouse-server/clickhouse.xml:/etc/clickhouse-server/conf.d/config.xml
    - /data/clickhouse:/var/lib/clickhouse
    # volumes_from:
    # - ckh_data
    etc_hosts: |
      {% set dict = {} -%}
      {%- for host in groups["clickhouse"] -%}
        {% set ignored = dict.update({ host : host }) %}
      {%- endfor %}
      {{ dict }}

ansible, slack message with role name and role inheritance

One can write the slack task in a defaults role inherited from other roles (such as zookeeper, ...)
Once started zookeeper cluster we want to send a slack message so we notify the slack handler but we have to pass it some role name in order to know what we deployed on which hosts.

Pass a parameter to your role that has the name like:

- hosts: zookeeper
  roles:
  - { role: zookeeper, slack_role: zookeeper }

then in the slack handler:
msg: "I deployed {{ slack_role }} on {{ ansible_play_hosts | to_json }}"

ybr / ybr.github.io Goto Github PK

ybr.github.io's People

Contributors

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ybr.github.io's Issues

Ansible and handler precedence

ansible how to have monitor many JVM on a same host

provide programmatically a dictionnary for docker_container.etc_hosts

ansible, slack message with role name and role inheritance

Ansible with Outscale, VPC, dynamic inventory and static groups

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