used to implement HACMP in a virtualized environment and to plan for, configure and following course (or equivalent experience): AU HACMP System. This edition applies to HACMP for AIX and HACMP/Enhanced Scalability ( HACMP/ES), Program. Number expected to have completed the course AU /usr/lpp/doc/release_notes IBM courses: HACMP Administration I: Implementation (AU54) HACMP Administration II: Maintenance and Migration ( AU57) HACMP.
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This article explains how to use the IBM PowerHA SystemMirror feature to get a cluster into stable state in case of any auu or resource failure due to wrong input without stopping cluster services.
Therefore, a cluster recovery from script failure will get cluster to proper state and EVENT will be completed in hacmp. Customer can get a cluster to a stable state and a resource group to an accessible state after rectifying the wrong input to their resources.
The following cltopinfo utility output shows a basic cluster information. An application will be added to resource group under a volume group and a file system will be created on it. In this cluster, one network and three resource groups are created.
Recovering from a resource failure in IBM PowerHA cluster
Subscribe me to comment havmp. So manual intervention is required as per hacmp. View image at full size. There are chances, that due to wrong input in resource or applications, cluster might not come to stable state and resource group might go to error state.
This article explains resource failure with an application failure under the resource group. Application under that Resource group is also not started.
Deliverables for each business are described in the table below. Similarly more than two nodes cluster can be created along with Site separation based on repository disk.
Assume that there is an application which is at home directory in server and we need to make that application highly available with PowerHA.
This article describes how to recover from application failure in a cluster using four nodes stretched cluster. Established a monthly capacity plan. User need to manually change the wrong input after seeing error in to hacmp. Comments Sign in or register to add and subscribe to comments.
AU54 – HACMP System Administration I – Planning and Implementation
This article explains about configuring base PowerHA cluster with two nodes. Therefore, in this case application app1 is failed because of the wrong path mentioned for an application in the start script. RG1 is nonconcurrent resource group and other 2 resource groups are concurrent groups. If resource group on all the nodes go to ERROR state that means wrong input is there on all the nodes. PowerHA provides feature that allows a cluster to come into stable state and resource active as per the policy after correcting wrong input without stopping the cluster services.
The first field is mandatory as it ask about the controller name. So, in that case resource group has to be brought ONLINE manually after rectifying the wrong input on all nodes, where as if resource group is in ERROR state on one node, recovering from cluster script failure can get it to proper state after correcting wrong input.
So there will be an application controller start,stop script, and also monitor script to monitor application in a cluster. Sign in or register to add and subscribe to comments.
Run the smit hacmp command at the command prompt. This section demonstrates how to add application controller and monitor scripts are added to PowerHA cluster.
An application controller name is user defined.
CV Administrateur système HACMP – F | Freelance-Informatique
This application is a resource under resource group RG1. Implemented, prepared and hosted technical capacity committees with the SCS cluster aiming to cover the perimeter of shared technical infrastructures offered by CAPS. Second ai is to add start script and third field is to add stop script.
After starting the cluster services, due to wrong input into script it will keep on restarting application controller because of restart count. Site based cluster can be stretched cluster or linked cluster, stretched cluster is at same location where as linked cluster is configured where data centers are at different geographical locations. After changing the script manually, HACMP hzcmp provide feature to recover from failure auu will run a clruncmd script under cluster utilities.
Cluster is created from SiteANode1 and changes are propagate on all nodes in cluster through verify and sync feature.