Testing the Cluster
Ok now we should be ready to go… Lets test it!!
On both servers start heartbeat service:
# service heartbeat start
on server1
[root@c6server1 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:95:AB:B1
inet addr:10.0.0.1 Bcast:10.0.4.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe95:abb1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2189638 errors:0 dropped:0 overruns:0 frame:0
TX packets:30442386 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:188528923 (179.7 MiB) TX bytes:45853044392 (42.7 GiB)
eth0:0 Link encap:Ethernet HWaddr 08:00:27:95:AB:B1
inet addr:10.0.0.100 Bcast:10.0.4.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:305 errors:0 dropped:0 overruns:0 frame:0
TX packets:305 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:35012 (34.1 KiB) TX bytes:35012 (34.1 KiB)
[root@c6server1 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_c6server1-lv_root
6.6G 905M 5.4G 15% /
tmpfs 499M 0 499M 0% /dev/shm
/dev/sda1 485M 60M 401M 13% /boot
sunrpc 40G 176M 38G 1% /var/lib/nfs/rpc_pipefs
/dev/drbd0 40G 176M 38G 1% /drbd
Lets test the DRBD/NFS fail over now
You can shutdown server1… not a problem or simply stop heartbeat service:
On server1:
# service heartbeat stop
On server2:
[root@c6server2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:8F:3B:50
inet addr:10.0.0.2 Bcast:10.0.4.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe8f:3b50/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30447253 errors:0 dropped:0 overruns:0 frame:0
TX packets:2138369 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:45799991579 (42.6 GiB) TX bytes:173195698 (165.1 MiB)
eth0:0 Link encap:Ethernet HWaddr 08:00:27:8F:3B:50
inet addr:10.0.0.100 Bcast:10.0.4.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:208 errors:0 dropped:0 overruns:0 frame:0
TX packets:208 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23480 (22.9 KiB) TX bytes:23480 (22.9 KiB)