第17章 Managing cluster resources

Procedure

1. Create an LVM-activate resource.

   # pcs resource create my_lvm ocf:heartbeat:LVM-activate vgname=my_vg vg_access_mode=system_id --group apachegroup

2. Create a Filesystem resource.

   # pcs resource create my_fs Filesystem device="/dev/my_vg/my_lv" directory="/var/www" fstype="xfs" --group apachegroup

3. Create an IPaddr2 resource.

   # pcs resource create VirtualIP IPaddr2 ip=198.51.100.3 cidr_netmask=24 --group apachegroup

4. Create an Apache resource.

   # pcs resource create Website apache configfile="/etc/httpd/conf/httpd.conf" statusurl="http://127.0.0.1/server-status" --group apachegroup

5. Display the pcs commands you can use to re-create the four resources you created on a different system.

   # pcs resource config --output-format=cmd
   pcs resource create --no-default-ops --force -- my_lvm ocf:heartbeat:LVM-activate \
     vg_access_mode=system_id vgname=my_vg \
     op \
       monitor interval=30s id=my_lvm-monitor-interval-30s timeout=90s \
       start interval=0s id=my_lvm-start-interval-0s timeout=90s \
       stop interval=0s id=my_lvm-stop-interval-0s timeout=90s;
   pcs resource create --no-default-ops --force -- my_fs ocf:heartbeat:Filesystem \
     device=/dev/my_vg/my_lv directory=/var/www fstype=xfs \
     op \
       monitor interval=20s id=my_fs-monitor-interval-20s timeout=40s \
       start interval=0s id=my_fs-start-interval-0s timeout=60s \
       stop interval=0s id=my_fs-stop-interval-0s timeout=60s;
   pcs resource create --no-default-ops --force -- VirtualIP ocf:heartbeat:IPaddr2 \
     cidr_netmask=24 ip=198.51.100.3 \
     op \
       monitor interval=10s id=VirtualIP-monitor-interval-10s timeout=20s \
       start interval=0s id=VirtualIP-start-interval-0s timeout=20s \
       stop interval=0s id=VirtualIP-stop-interval-0s timeout=20s;
   pcs resource create --no-default-ops --force -- Website ocf:heartbeat:apache \
     configfile=/etc/httpd/conf/httpd.conf statusurl=http://127.0.0.1/server-status \
     op \
       monitor interval=10s id=Website-monitor-interval-10s timeout=20s \
       start interval=0s id=Website-start-interval-0s timeout=40s \
       stop interval=0s id=Website-stop-interval-0s timeout=60s;
   pcs resource group add apachegroup \
     my_lvm my_fs VirtualIP Website

6. Display the pcs command you can use to re-create only the IPaddr2 resource. To display only one configured resource, specify the resource ID for that resource.

   # pcs resource config VirtualIP --output-format=cmd
   pcs resource create --no-default-ops --force -- VirtualIP ocf:heartbeat:IPaddr2 \
     cidr_netmask=24 ip=198.51.100.3 \
     op \
       monitor interval=10s id=VirtualIP-monitor-interval-10s timeout=20s \
       start interval=0s id=VirtualIP-start-interval-0s timeout=20s \
       stop interval=0s id=VirtualIP-stop-interval-0s timeout=20s