Chapter 2. Getting started with the HA Cluster Management add-on for the RHEL web console

Procedure

1. From the system on which you are running the RHEL web console, log in to the console and install the HA Cluster Management add-on application. See Add-on applications for the RHEL web console in the "Managing systems in the RHEL web console" document for details.

2. On each cluster node, install the Red Hat High Availability fence agents from the High Availability channel.

   # dnf install fence-agents-all

   Copy to Clipboard

   You can install only the fence agent that you require with the following command.

   # dnf install fence-agents-model

   Copy to Clipboard

3. On each cluster node, ensure that the pcsd service is running.

   # systemctl status pcsd.service

   Copy to Clipboard

   If the pcsd service is not running on a cluster node, enter the following command to start the pcsd service and to enable it at system start.

   # systemctl enable --now pcsd.service

   Copy to Clipboard

4. Ensure you are logged in to the RHEL web console. To use the RHEL web console to create clusters, the user account used to sign in to the web console must have sudo access to the system.

   Note

   The hacluster user account is the Pacemaker service account and you cannot use this account to log in to the RHEL web console.

5. In the RHEL web console, switch to administrative access mode. For information about administrative access mode, see Administrative access in the web console in the "Managing systems in the RHEL web console" document.

Procedure

1. Log in to the RHEL web console with an account that has sudo access to the system and ensure that you are in administrative access mode. For information about administrative access mode, see Administrative access in the web console in the "Managing systems in the RHEL web console" document.

   Alternatively, log into the RHEL web console with an account that has grant permissions for the cluster you want to manage. The account must be a member of the haclient group to see the HA Cluster Management web console add-on in limited access mode.

2. Select a cluster for which you want to manage permissions from the cluster list.
3. In the cluster detail, click the Permissions tab on the top of the page and select Create Permission.
4. Add, remove, or edit the permissions for a user or group.
5. By default, any user with an account that is a member of the haclient group has read, write and grant permissions. From the Permissions page you can remove this permission if you have administrative access in the web console or if you have grant permissions.