Pacemaker : Set Cluster Resource (NFS)2024/07/23 |
Set NFS Cluster Resource and Configure Active/Passive NFS Server.
This example is based on the environment like follows. +--------------------+ | [ ISCSI Target ] | | dlp.srv.world | +----------+---------+ 10.0.0.30| | +----------------------+ | +----------------------+ | [ Cluster Node#1 ] |10.0.0.51 | 10.0.0.52| [ Cluster Node#2 ] | | node01.srv.world +----------+----------+ node02.srv.world | | NFS Server | | | NFS Server | +----------------------+ | +----------------------+ vip:10.0.0.60 | +----------+---------+ | [ NFS Clients ] | | | +--------------------+ |
[1] | On all Cluster Nodes, Install NFS tools. |
root@node01:~# apt -y install nfs-kernel-server nfs-common resource-agents-extra
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[2] | On a Node that LVM shared storage is active in Cluster, Add NFS resource. [/dev/vg_ha/lv_ha] on the example below is LVM shared storage. |
# current status root@node01:~# pcs status Cluster name: ha_cluster Cluster Summary: * Stack: corosync (Pacemaker is running) * Current DC: node01.srv.world (version 2.1.6-6fdc9deea29) - partition with quorum * Last updated: Tue Jul 23 03:59:32 2024 on node01.srv.world * Last change: Tue Jul 23 03:58:31 2024 by root via cibadmin on node01.srv.world * 2 nodes configured * 2 resource instances configured Node List: * Online: [ node01.srv.world node02.srv.world ] Full List of Resources: * scsi-shooter (stonith:fence_scsi): Started node01.srv.world * Resource Group: ha_group: * lvm_ha (ocf:heartbeat:LVM-activate): Started node01.srv.world Daemon Status: corosync: active/enabled pacemaker: active/enabled pcsd: active/enabled # set Filesystem resource # [nfs_share] : any name # [device=***] : shared storage # [directory=***] : mount point # [group ***] : set in the same group with shared storage root@node01:~# pcs resource create nfs_share ocf:heartbeat:Filesystem device=/dev/vg_ha/lv_ha directory=/home/nfs-share fstype=ext4 group ha_group --future
pcs status Cluster name: ha_cluster Cluster Summary: * Stack: corosync (Pacemaker is running) * Current DC: node01.srv.world (version 2.1.6-6fdc9deea29) - partition with quorum * Last updated: Tue Jul 23 04:06:22 2024 on node01.srv.world * Last change: Tue Jul 23 04:05:40 2024 by root via cibadmin on node01.srv.world * 2 nodes configured * 3 resource instances configured Node List: * Online: [ node01.srv.world node02.srv.world ] Full List of Resources: * scsi-shooter (stonith:fence_scsi): Started node01.srv.world * Resource Group: ha_group: * lvm_ha (ocf:heartbeat:LVM-activate): Started node01.srv.world * nfs_share (ocf:heartbeat:Filesystem): Started node01.srv.world Daemon Status: corosync: active/enabled pacemaker: active/enabled pcsd: active/enabled # mount automatically on a node that resources started root@node01:~# df -hT /home/nfs-share Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/vg_ha-lv_ha ext4 9.8G 24K 9.3G 1% /home/nfs-share # set nfsserver resource # [nfs_daemon] : any name # [nfs_shared_infodir=***] : specify a directory that NFS server related files are located root@node01:~# pcs resource create nfs_daemon ocf:heartbeat:nfsserver nfs_shared_infodir=/home/nfs-share/nfsinfo nfs_no_notify=true group ha_group --future
# set IPaddr2 resource # virtual IP address clients access to NFS service root@node01:~# pcs resource create nfs_vip ocf:heartbeat:IPaddr2 ip=10.0.0.60 cidr_netmask=24 group ha_group --future
pcs status Cluster name: ha_cluster Cluster Summary: * Stack: corosync (Pacemaker is running) * Current DC: node01.srv.world (version 2.1.6-6fdc9deea29) - partition with quorum * Last updated: Tue Jul 23 04:09:11 2024 on node01.srv.world * Last change: Tue Jul 23 04:09:04 2024 by root via cibadmin on node01.srv.world * 2 nodes configured * 5 resource instances configured Node List: * Online: [ node01.srv.world node02.srv.world ] Full List of Resources: * scsi-shooter (stonith:fence_scsi): Started node01.srv.world * Resource Group: ha_group: * lvm_ha (ocf:heartbeat:LVM-activate): Started node01.srv.world * nfs_share (ocf:heartbeat:Filesystem): Started node01.srv.world * nfs_daemon (ocf:heartbeat:nfsserver): Started node01.srv.world * nfs_vip (ocf:heartbeat:IPaddr2): Started node01.srv.world Daemon Status: corosync: active/enabled pacemaker: active/enabled pcsd: active/enabled |
[3] | On an active Node NFS filesystem mounted, set exportfs setting. |
# set exportfs resource # [nfs_root] : any name # [clientspec=*** options=*** directory=***] : exports setting # [fsid=0] : root point on NFSv4 root@node01:~# pcs resource create nfs_root ocf:heartbeat:exportfs clientspec=10.0.0.0/255.255.255.0 options=rw,sync,no_root_squash directory=/home/nfs-share/nfs-root fsid=0 group ha_group --future # set exportfs resource root@node01:~# pcs resource create nfs_share01 ocf:heartbeat:exportfs clientspec=10.0.0.0/255.255.255.0 options=rw,sync,no_root_squash directory=/home/nfs-share/nfs-root/share01 fsid=1 group ha_group --future
pcs status Cluster name: ha_cluster Cluster Summary: * Stack: corosync (Pacemaker is running) * Current DC: node01.srv.world (version 2.1.6-6fdc9deea29) - partition with quorum * Last updated: Tue Jul 23 04:11:18 2024 on node01.srv.world * Last change: Tue Jul 23 04:11:09 2024 by root via cibadmin on node01.srv.world * 2 nodes configured * 7 resource instances configured Node List: * Online: [ node01.srv.world node02.srv.world ] Full List of Resources: * scsi-shooter (stonith:fence_scsi): Started node01.srv.world * Resource Group: ha_group: * lvm_ha (ocf:heartbeat:LVM-activate): Started node01.srv.world * nfs_share (ocf:heartbeat:Filesystem): Started node01.srv.world * nfs_daemon (ocf:heartbeat:nfsserver): Started node01.srv.world * nfs_vip (ocf:heartbeat:IPaddr2): Started node01.srv.world * nfs_root (ocf:heartbeat:exportfs): Started node01.srv.world * nfs_share01 (ocf:heartbeat:exportfs): Started node01.srv.world Daemon Status: corosync: active/enabled pacemaker: active/enabled pcsd: active/enabledroot@node01:~# showmount -e Export list for node01.srv.world: /home/nfs-share/nfs-root 10.0.0.0/255.255.255.0 /home/nfs-share/nfs-root/share01 10.0.0.0/255.255.255.0 |
[4] | Verify settings to access to virtual IP address with NFS from any client computer. |
root@client:~# mount -t nfs4 10.0.0.60:share01 /mnt root@client:~# df -hT /mnt Filesystem Type Size Used Avail Use% Mounted on 10.0.0.60:/share01 nfs4 9.8G 0 9.3G 0% /mnt |
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