Warning
clustername:fsname
. For the fsname
, we need to use the same value as specified in corosync.conf for cluster_name
. If you setup corosync with the same cluster name we used in this tutorial, cluster name will be mycluster. If you are unsure what your cluster name is, open up /etc/corosync/corosync.conf, or execute the command pcs cluster corosync pcmk-1 to view the corosync config. The cluster name will be in the totem
block.
Important
/dev/drbd1: Read-only file system
# ssh pcmk-2 -- mkfs.gfs2 -p lock_dlm -j 2 -t mycluster:web /dev/drbd1 This will destroy any data on /dev/drbd1. It appears to contain: Linux rev 1.0 ext4 filesystem data, UUID=dc45fff3-c47a-4db2-96f7-a8049a323fe4 (extents) (large files) (huge files) Are you sure you want to proceed? [y/n]y Device: /dev/drbd1 Blocksize: 4096 Device Size 0.97 GB (253935 blocks) Filesystem Size: 0.97 GB (253932 blocks) Journals: 2 Resource Groups: 4 Locking Protocol: "lock_dlm" Lock Table: "mycluster" UUID: ed293a02-9eee-3fa3-ed1c-435ef1fd0116
# pcs cluster cib dlm_cfg # pcs -f dlm_cfg resource create dlm ocf:pacemaker:controld op monitor interval=60s # pcs -f dlm_cfg resource clone dlm clone-max=2 clone-node-max=1 # pcs -f dlm_cfg resource show ClusterIP (ocf::heartbeat:IPaddr2) Started WebSite (ocf::heartbeat:apache) Stopped Master/Slave Set: WebDataClone [WebData] Masters: [ pcmk-2 ] Slaves: [ pcmk-1 ] WebFS (ocf::heartbeat:Filesystem) Stopped Clone Set: dlm-clone [dlm] Stopped: [ dlm:0 dlm:1 ] # pcs cluster push cib dlm_cfg CIB updated # pcs status Last updated: Fri Sep 14 12:54:50 2012 Last change: Fri Sep 14 12:54:43 2012 via cibadmin on pcmk-1 Stack: corosync Current DC: pcmk-1 (1) - partition with quorum Version: 1.1.8-1.el7-60a19ed12fdb4d5c6a6b6767f52e5391e447fec0 2 Nodes configured, unknown expected votes 7 Resources configured. Online: [ pcmk-1 pcmk-2 ] Full list of resources: ClusterIP (ocf::heartbeat:IPaddr2): Started pcmk-2 WebSite (ocf::heartbeat:apache): Stopped Master/Slave Set: WebDataClone [WebData] Masters: [ pcmk-2 ] Slaves: [ pcmk-1 ] WebFS (ocf::heartbeat:Filesystem): Stopped Clone Set: dlm-clone [dlm] Started: [ pcmk-1 pcmk-2 ]
# mount /dev/drbd1 /mnt/ # cat <<-END >/mnt/index.html <html> <body>My Test Site - GFS2</body> </html> END # umount /dev/drbd1 # drbdadm verify wwwdata