第16章 Configuring performance monitoring with PCP by using RHEL system roles

Procedure

1. Create a playbook file, for example, ~/playbook.yml, with the following content:

   ---
   - name: Monitoring performance metrics
     hosts: managed-node-01.example.com
     tasks:
       - name: Configure Performance Co-Pilot
         ansible.builtin.include_role:
           name: redhat.rhel_system_roles.metrics
         vars:
           metrics_retention_days: 14
           metrics_manage_firewall: true
           metrics_manage_selinux: true

   The settings specified in the example playbook include the following:

   metrics_retention_days: <number>

   Sets the number of days after which the pmlogger_daily systemd timer removes old PCP archives.

   metrics_manage_firewall: <true|false>

   Defines whether the role should open the required ports in the firewalld service. If you want to remotely access PCP on the managed nodes, set this variable to true.

   For details about all variables used in the playbook, see the /usr/share/ansible/roles/rhel-system-roles.metrics/README.md file on the control node.

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml