Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Guía de instalación descargar pdf (Pagina 151)

8. At any node, using the cl ustat utility, verify that the HA services are running as expected. In

addition, cl ustat displays status of the cluster nodes. For example:

[root@ example-01 ~]#clustat

Cluster Status for mycluster @ Wed Nov 17 05:40:00 2010

Member Status: Quorate

Member Name ID Status

------ ---- ---- ------

node-03.example.com 3 Online, rgmanager

node-02.example.com 2 Online, rgmanager

node-01.example.com 1 Online, Local,

rgmanager

Service Name Owner (Last)

State

------- ---- ----- ------ ---

service:example_apache node-01.example.com

started

service:example_apache2 (none)

disabled

9. If the cluster is running as expected, you are done updating the configuration.

8.4 .2. Updat ing a Configurat ion Using scp

To update the configuration using the scp command, perform the following steps:

1. At any node in the cluster, edit the /etc/cl uster/cl uster. co nf file.

2. Update the co nfi g _versi o n attribute by incrementing its value (for example, changing

from co nfi g _versi o n= "2" to co nfi g _versio n= "3">).

3. Save /etc/cl uster/cl uster.co nf.

4. Validate the updated file against the cluster schema (cluster. rng ) by running the

ccs_co nfi g _val i d ate command. For example:

[root@ example-01 ~]# ccs_co nfi g _val i d ate

Configuration validates

5. If the updated file is valid, use the scp command to propagate it to /etc/cl uster/ in each

cluster node.

6. Verify that the updated configuration file has been propagated.

7. To reload the new configuration, execute the following command on one of the cluster nodes:

cman_tool version -r

If you do not have ri cci installed, you can use the following command:

cman_tool version -s

Con siderat ion s for Using t he Freeze an d Unfreeze Operat ions

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Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 Guía de instalación Pagina 151