update_versions.md

Consul and Nomad version update: Ansible deployment

ⓘ Requirements
This tutorial assumes the nodes are already configured and running.

1. Configure hosts

Copy hosts_update_template into a new hosts file (e.g. myhosts).

Modify the new hosts file to match the cluster configuration. An example can be found on hosts_update_example. Specifically, modify the following groups:

• version_update

  Modify the line to match each node name and its IP.

  ⚠ These will be the nodes on which the version update will be carried out.

  Line template:

  <node1_name> ansible_host=<node1_public_IP>
    ...
  <nodeN_name> ansible_host=<nodeN_public_IP>

  Group example:

  [version_update]
  node-ifca-0 ansible_host=193.146.75.205
  node-ifca-1 ansible_host=172.16.44.95
  node-ifca-gpu-0 ansible_host=172.16.44.233
  node-ifca-traefik ansible_host=193.146.75.208

2. Modify group_vars

Modify group_vars/all.ym file. Specifically, modify the following variables:

• ansible_master

  Set the name and IP of the ansible master on section Ansible.

  Line template:

  ansible_master: { name: <ansible_master_name>, ip: <ansible_master_ip }

  Line example:

  ansible_master: { name: ansible1, ip: 172.16.40.39 }

• nomad_version

  Set the number of Nomad version on section Nomad.

  Line template:

  nomad_version: <number_of_nomad_version>

  Line example:

  nomad_version: 1.7.3

• consul_version

  Set the number of Consul version on section Consul.

  Line template:

  consul_version: <number_of_consul_version>

  Line example:

  consul_version: 1.17.1

4. Execute playbook

• Execute playbook-update-version.yaml playbook to update the versions.

  ansible-playbook -i <new_hosts_file> playbook-update-version.yaml