content_image/986237.jpg content_image/986238.jpg
Complete the following steps: 

1. Stop cluster services on both nodes decano1 and bolsilludo2 by running smitty clstop and selecting the options that are shown in Figure 4-8. The OK response appears quickly. 

As an alternative, you can also stop the entire cluster by running the following command: 

clmgr stop cluster 

Make sure that the cluster node is in the ST_INIT  state by reviewing the clcmd lssrc -ls clstrmgrES|grep state output. 

<img src='content_image/986237.jpg'>

2. Upgrade AIX on both nodes. 

Important:  If upgrading to AIX 7.2.0, see the AIX 7.2 Release Notes  regarding RSCT file sets when upgrading. 

In our scenario, we have supported AIX levels for PowerHA V7.2.3 and do not need to perform this step, but if you do this step, a restart is required before continuing. 

3. Verify that the clcomd  daemon is active on both nodes, as shown in Figure 4-9. 

<img src='content_image/986238.jpg'>

