VCS ON RHEL6–CONFIGURE & OPERATION-P7 (RESOURCES)

VCS ON RHEL6–CONFIGURE & OPERATION-P7

RESOURCES:

·         How to list the available resources in vcs?

·         How to online/offline a resource in vcs?

·         How to display the attributes/parameters of a resource in vcs?

·         How to change the attribute value of a resource in vcs?

·         How to show the state of a resource in vcs?

·         How to list dependency of a resource in vcs?

·         How to online/offline resources in vcs?

·         How to Clearing a resource (automatically initiates the online) in vcs?

·         How to probe a resource in vcs?

·         How to Offline a resource and propagate the command to its children in vcs?

How to list the available resources…?

[root@pr01 ~]# hares –list

[root@pr01 ~]# hares -list -clus cluster1 |grep -i pr01

DG_Res                  cluster1:dr01

DG_Res                  cluster1:pr01

Mount_Res               cluster1:dr01

Mount_Res               cluster1:pr01

NFS_DG1                 cluster1:dr01

NFS_DG1                 cluster1:pr01

NFS_IP1                 cluster1:dr01

NFS_IP1                 cluster1:pr01

==============O/P Removed==========================================

How to show the state of a resource …?

[root@pr01 ~]# hares -state

#Resource    Attribute             System     Value

DG_Res       State                 dr01       OFFLINE

DG_Res       State                 pr01       ONLINE

Mount_Res    State                 dr01       OFFLINE

Mount_Res    State                 pr01       ONLINE

NFS_DG1      State                 dr01       OFFLINE

NFS_DG1      State                 pr01       ONLINE

NFS_IP1      State                 dr01       OFFLINE

==============O/P Removed==========================================

How to display the attributes/parameters of a resource …?

[root@pr01 ~]# hares –display <for all available resources>

[root@pr01 ~]# hares -display NFS_MOUNT1

#Resource    Attribute             System     Value

NFS_MOUNT1   Group                 global     NFS_APP1

NFS_MOUNT1   Type                  global     Mount

NFS_MOUNT1   AutoStart             global     1

NFS_MOUNT1   Critical              global     1

NFS_MOUNT1   Enabled               global     1

NFS_MOUNT1   LastOnline            global     pr01

NFS_MOUNT1   MonitorOnly           global     0

==============O/P Removed==========================================

How to change the attribute value of a resource …?

First we need to identify the resource attribute, whose value needs to be changed,

[root@pr01 ~]# hares –display

[root@pr01 ~]# hares -global DG_Res Critical 0

VCS WARNING V-16-1-11335 Configuration must be ReadWrite : Use haconf -makerw

[root@pr01 ~]# hares -local DG_Res Critical

VCS WARNING V-16-1-11335 Configuration must be ReadWrite : Use haconf –makerw

[root@pr01 ~]# haconf –makerw

[root@pr01 ~]# hares -modify Web_Res MonitorOnly 0

VCS WARNING V-16-1-10576 System-defined attributes may not be modified

[root@pr01 ~]# hagrp -resources Web-App

Web_Res

DG_Res

Service_IP

Mount_Res

Nic_Res

Volume_Res

[root@pr01 ~]# hares -display DG_Res

#Resource    Attribute             System     Value

DG_Res       Group                 global     Web-App

DG_Res       Type                  global     DiskGroup

DG_Res       AutoStart             global     1

DG_Res       Critical              global     0

DG_Res       Enabled               global     1

DG_Res       LastOnline            global     pr01

==============O/P Removed==========================================

[root@pr01 ~]# hares -modify DG_Res Critical 0

[root@pr01 ~]# hares -display DG_Res |grep -i critical

DG_Res       Critical              global     0

[root@pr01 ~]# hares -modify DG_Res Critical 1

[root@pr01 ~]# hares -display DG_Res |grep -i critical

DG_Res       Critical              global     1

[root@pr01 ~]# hares -global DG_Res Critical 1

VCS WARNING V-16-1-10562 Value is already global.

[root@pr01 ~]# hares -local DG_Res Critical

VCS WARNING V-16-1-50153 Scope local not allowed for Critical attribute of resource

[root@pr01 ~]# hares -global DG_Res Critical 0

VCS WARNING V-16-1-10562 Value is already global.

[root@pr01 ~]# hares -modify DG_Res Critical 0

[root@pr01 ~]# hares -display DG_Res |grep -i critical

DG_Res       Critical              global     0

How to list dependency of a resource …?

[root@pr01 ~]# hares -dep NFS_IP1

#Group       Parent       Child

NFS_APP1     NFS_IP1      NFS_NIC1

NFS_APP1     NFS_RESTART1 NFS_IP1

[root@pr01 ~]# hares -dep Web_Res

#Group       Parent     Child

Web-App      Web_Res    Service_IP

Web-App      Web_Res    Mount_Res

How to online/offline resources…?

ONLINE,

[root@pr01 ~]# hares -online -force Service_IP -sys pr01

VCS WARNING V-16-1-51018 Unable to use the -force option for a resource in a local group

[root@pr01 ~]# hares -online Service_IP -sys pr01

[root@pr01 ~]# hares -state Service_IP

#Resource    Attribute             System     Value

Service_IP   State                 dr01       OFFLINE

Service_IP   State                 pr01       ONLINE

OFFLINE,

[root@pr01 ~]# hares -offline Service_IP -sys pr01

VCS WARNING V-16-1-10287 Online resources depend on resource Service_IP. Take them offline first

[root@pr01 ~]# hares -offline -ignoreparent Service_IP -sys pr01

[root@pr01 ~]# hares -state Service_IP

#Resource    Attribute             System     Value

Service_IP   State                 dr01       OFFLINE

Service_IP   State                 pr01       OFFLINE

How to Clearing a resource (automatically initiates the online) …?

[root@pr01 ~]# hares -clear Service_IP -sys pr01

VCS WARNING V-16-1-10266 Resource not faulted on node pr01

[root@pr01 ~]# hares -clear Service_IP -sys dr01

VCS WARNING V-16-1-10266 Resource not faulted on node dr01

How to probe (Cause a resource agent to immediately monitor the resource) a resource…?

[root@pr01 ~]# hares -probe Service_IP -sys dr01

How to Offline a resource and propagate the command to its children…?

[root@pr01 ~]# hares -offprop Volume_Res -sys pr01

VCS WARNING V-16-1-10287 Online resources depend on resource Volume_Res. Take them offline first

[root@pr01 ~]# hares -offprop DG_Res -sys pr01

VCS WARNING V-16-1-10287 Online resources depend on resource DG_Res. Take them offline first

Let’s check it with Web_Res

[root@pr01 ~]# hares -dep Web_Res

#Group       Parent     Child

Web-App      Web_Res    Service_IP

Web-App      Web_Res    Mount_Res

[root@pr01 ~]# hares -offprop Web_Res -sys pr01

[root@pr01 ~]# hares -state Web_Res

#Resource    Attribute             System     Value

Web_Res      State                 dr01       OFFLINE

Web_Res      State                 pr01       OFFLINE

Check the status of dependency as well,

[root@pr01 ~]# hares -state Service_IP

#Resource    Attribute             System     Value

Service_IP   State                 dr01       OFFLINE

Service_IP   State                 pr01       OFFLINE

[root@pr01 ~]# hares -state Mount_Res

#Resource    Attribute             System     Value

Mount_Res    State                 dr01       OFFLINE

Mount_Res    State                 pr01       OFFLINE

Now it is offline everywhere,

[root@pr01 ~]# hagrp -state

#Group       Attribute             System     Value

NFS_APP1     State                 dr01       |OFFLINE|

NFS_APP1     State                 pr01       |ONLINE|

Web-App      State                 dr01       |OFFLINE|

Web-App      State                 pr01       |OFFLINE|

Make it live,

[root@pr01 ~]# hagrp -online Web-App -sys pr01

[root@pr01 ~]# hagrp -state

#Group       Attribute             System     Value

NFS_APP1     State                 dr01       |OFFLINE|

NFS_APP1     State                 pr01       |ONLINE|

Web-App      State                 dr01       |OFFLINE|

Web-App      State                 pr01       |ONLINE|

Reference & Good Read,

https://sort.veritas.com/public/documents/sf/5.0/aix/manpages/vcs/hares_1m.html#428920

http://www.datadisk.co.uk/html_docs/veritas/veritas_cluster_cs.htm