How to create Resource Group on Solaris cluster ?

This article will help you to create a resource group on Solaris cluster and adding couple of resource to it. Resource group is similar to service group in veritas  cluster which bundles the resources in one logical unit. Once you have configured the Solaris two node cluster and added the quorum devices, you can create a resource group. Once we create the resource group ,we will add zpool storage resource and will perform the failover  test.

1. Login to one of the cluster node as root and check the cluster node status.

UASOL1:#clnode status
=== Cluster Nodes ===
--- Node Status ---
Node Name                                       Status
---------                                       ------
UASOL2                                          Online
UASOL1                                          Online
UASOL1:#

2.Check the heartbeat link status of Solaris cluster.

UASOL1:#clinterconnect status
=== Cluster Transport Paths ===
Endpoint1               Endpoint2               Status
---------               ---------               ------
UASOL2:e1000g2          UASOL1:e1000g2          Path online
UASOL2:e1000g1          UASOL1:e1000g1          Path online

UASOL1:#

3.Check the quorum status.

UASOL1:#clq status
=== Cluster Quorum ===
--- Quorum Votes Summary from (latest node reconfiguration) ---

            Needed   Present   Possible
            ------   -------   --------
            2        3         3

--- Quorum Votes by Node (current status) ---
Node Name       Present       Possible       Status
---------       -------       --------       ------
UASOL2          1             1              Online
UASOL1          1             1              Online

--- Quorum Votes by Device (current status) ---
Device Name       Present      Possible      Status
-----------       -------      --------      ------
d5                1            1             Online
UASOL1:#

4.In the above command output, everything seems to be fine. So let me create a resource group.

UASOL1:#clrg create UA-HA-ZRG
UASOL1:#

5.Check the resource group status.

UASOL1:#clrg status

=== Cluster Resource Groups ===

Group Name       Node Name       Suspended      Status
----------       ---------       ---------      ------
UA-HA-ZRG        UASOL2          No             Unmanaged
                 UASOL1          No             Unmanaged
UASOL1:#

We have successfully created the resource group on Solaris cluster.

Let me create a ZFS  storage pool and add it in Solaris cluster.

1.Check the cluster device instances. Here d5 d6 are from SAN storage. d5 is already used for quorum setup.

UASOL1:#cldevice list -v
DID Device          Full Device Path
----------          ----------------
d1                  UASOL2:/dev/rdsk/c1t0d0
d1                  UASOL1:/dev/rdsk/c1t0d0
d2                  UASOL1:/dev/rdsk/c1t2d0
d3                  UASOL2:/dev/rdsk/c1t2d0
d4                  UASOL2:/dev/rdsk/c1t1d0
d4                  UASOL1:/dev/rdsk/c1t1d0
d5                  UASOL2:/dev/rdsk/c2t16d0
d5                  UASOL1:/dev/rdsk/c2t14d0
d6                  UASOL2:/dev/rdsk/c2t15d0
d6                  UASOL1:/dev/rdsk/c2t13d0
UASOL1:#
UASOL1:#cldevice status
=== Cluster DID Devices ===
Device Instance              Node               Status
---------------              ----               ------
/dev/did/rdsk/d1             UASOL1             Ok
                             UASOL2             Ok

/dev/did/rdsk/d2             UASOL1             Ok

/dev/did/rdsk/d3             UASOL2             Ok

/dev/did/rdsk/d4             UASOL1             Ok
                             UASOL2             Ok

/dev/did/rdsk/d5             UASOL1             Ok
                             UASOL2             Ok

/dev/did/rdsk/d6             UASOL1             Ok
                             UASOL2             Ok
UASOL1:#

2.Create a new ZFS storage pool using d6.

UASOL1:#zpool create -f UAZPOOL /dev/did/dsk/d6s2
UASOL1:#zpool status UAZPOOL
  pool: UAZPOOL
 state: ONLINE
 scan: none requested
config:

        NAME                 STATE     READ WRITE CKSUM
        UAZPOOL              ONLINE       0     0     0
          /dev/did/dsk/d6s2  ONLINE       0     0     0

errors: No known data errors
UASOL1:#df -h /UAZPOOL
Filesystem             size   used  avail capacity  Mounted on
UAZPOOL                3.0G    31K   3.0G     1%    /UAZPOOL
UASOL1:#

3.Register the ZFS resource type in Solaris cluster.

UASOL1:#clresourcetype register SUNW.HAStoragePlus
UASOL1:#

4.Create the new cluster resource for zpool which we have created on previous step.

UASOL1:#clresource create -g UA-HA-ZRG -t SUNW.HAStoragePlus -p Zpools=UAZPOOL CLUAZPOOL
UASOL1:#

•  -g Resoure Group – UA-HA-ZRG
• -t Resource type – SUNW.HAStoragePlus
• -p Zpools  – UAZPOOL(zpool name)
• CLUAZPOOL – Cluster Resource name.

5.Check the resource status.

UASOL1:#clresource status
=== Cluster Resources ===
Resource Name       Node Name      State        Status Message
-------------       ---------      -----        --------------
CLUAZPOOL           UASOL2         Offline      Offline
                    UASOL1         Offline      Offline
UASOL1:#

6.Bring the resource group online and check the resource status.

UASOL1:#clrg online -M -n UASOL1 UA-HA-ZRG
UASOL1:#clresource status
=== Cluster Resources ===
Resource Name       Node Name      State        Status Message
-------------       ---------      -----        --------------
CLUAZPOOL           UASOL2         Offline      Offline
                    UASOL1         Online       Online
UASOL1:#

7.List the zpool where the resource group is online.

UASOL1:#zpool list
NAME      SIZE  ALLOC   FREE  CAP  HEALTH  ALTROOT
UAZPOOL  3.05G   132K  3.05G   0%  ONLINE  /
rpool    13.9G  9.32G  4.56G  67%  ONLINE  -
UASOL1:#

8.To test the resource group, Switch the resource group  to other node.

UASOL1:#clrg switch -n UASOL2 +
UASOL1:#

9.Now you can see that cluster zpool has been moved to UASOL2 node.

UASOL1:#zpool list
NAME    SIZE  ALLOC   FREE  CAP  HEALTH  ALTROOT
rpool  13.9G  9.32G  4.56G  67%  ONLINE  -
UASOL1:#clrg status
=== Cluster Resource Groups ===
Group Name       Node Name       Suspended      Status
----------       ---------       ---------      ------
UA-HA-ZRG        UASOL2          No             Online
                 UASOL1          No             Offline
UASOL1:#ssh UASOL2 zpool list
Password:
NAME      SIZE  ALLOC   FREE  CAP  HEALTH  ALTROOT
UAZPOOL  3.05G   132K  3.05G   0%  ONLINE  /
rpool    13.9G  9.15G  4.73G  65%  ONLINE  -
UASOL1:#

So automatic failover should work for resource group which we have just created. In the next article,we will see that how add the localzone to the cluster.

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