Chapter 2. Installing and configuring the resource-optimization components

Procedure on RHEL 8

1. Install Ansible:

   # yum install ansible -y

Procedure on RHEL 7

1. Enable the Subscription-Manager repository and register the system

   # subscription-manager config --rhsm.manage_repos=1
   # subscription-manager register

2. Optionally, attach your system to a subscription pool

   # subscription-manager attach --pool xxxxxxxx

3. Enable the required Ansible repository.

   # subscription-manager repos --enable=rhel-7-server-ansible-2.9-rpms

4. Install Ansible:

   # yum install ansible -y

5. If you are using RHEL PAYG and want to use RHUI update servers only, disable the Subscription-Manager repository:

   # subscription-manager config --rhsm.manage_repos=0

Procedure

1. Download the Ansible Playbook with the following command:

   $ curl -O https://raw.githubusercontent.com/RedHatInsights/ros-backend/v2.0/ansible-playbooks/ros_install_and_set_up.yml

2. Set localhost in Ansible inventory by appending the line localhost to /etc/ansible/hosts.

3. Run the Ansible Playbook:

   # ansible-playbook -c local ros_install_and_set_up.yml

1. Set core_collect=True in /etc/insights-client/insights-client.conf

2. Install the Performance Co-Pilot (PCP) toolkit.

   $ sudo yum install pcp

3. Create the PCP configuration file /var/lib/pcp/config/pmlogger/config.ros with this content:

   log mandatory on default {
     hinv.ncpu
     mem.physmem
     mem.util.available
     disk.dev.total
     kernel.all.cpu.idle
     kernel.all.pressure.cpu.some.avg
     kernel.all.pressure.io.full.avg
     kernel.all.pressure.io.some.avg
     kernel.all.pressure.memory.full.avg
     kernel.all.pressure.memory.some.avg
   }
   [access]
   disallow .* : all;
   disallow :* : all;
   allow local:* : enquire;

4. To configure pmlogger to gather the metrics required by resource optimization, add this line to /etc/pcp/pmlogger/control.d/local:

   LOCALHOSTNAME	n   n	PCP_LOG_DIR/pmlogger/ros	-r -T24h10m -c config.ros -v 100Mb

   Note

   In previous versions of this procedure, this line began with LOCALHOSTNAME n y. The procedure now advises that you use LOCALHOSTNAME n n, which disables the usage of pmsocks. For more information about pmsocks, refer to the man page for pmsocks.

5. Start and enable the required PCP services.

   $ sudo systemctl enable pmcd pmlogger
   $ sudo systemctl start pmcd pmlogger

6. Re-register insights-client and upload the archive. The system will show in Insights immediately in a "Waiting for data" state, and data and suggestions will be available the day after registering.

   $ sudo insights-client --register