第 2 章 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

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

   # dnf install fence-agents-model

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

   # systemctl status pcsd.service

   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

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.

   注意

   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.

   注意

   Only a user with sudo access can create clusters and add nodes to existing ones. After you create a cluster, by default, users in the haclient group can manage the cluster and change permissions. For information about granting different permissions to any other users and groups that require them, or for modifying the default haclient permissions, see Granting HA Cluster Management permissions.