Configuring Mulitple Nodes to Support Failover of Multiple Packages

This configuration has three servers and three MC/ServiceGuard NFS packages. Each server is the primary node for one package and an adoptive node for the other two packages. Figure 3-1 “Three-Server Mutual Takeover” illustrates this configuration. Dotted lines indicate which servers are adoptive nodes for the packages. Figure 3-2 “Three-Server Mutual Takeover After One Server Fails” illustrates the configuration after host basil fails.

Figure 3-1 Three-Server Mutual Takeover

Figure 3-2 “Three-Server Mutual Takeover After One Server Fails” shows the three-server mutual takeover configuration after host basil has failed and host sage has adopted pkg02. Dotted lines indicate which servers are adoptive nodes for the packages.

Figure 3-2 Three-Server Mutual Takeover After One Server Fails

Cluster Configuration File for Three-Server Mutual Takeover

This section shows the cluster configuration file (cluster.conf) for this configuration example. The comments are not shown.

CLUSTER_NAME			                 MutTakOvr
 
QS_HOST                      qs
QS_POLLING_INTERVAL          300000000
 
NODE_NAME                    thyme
  NETWORK_INTERFACE          eth0
    HEARTBEAT_IP             192.100.112.146
  NETWORK_INTERFACE          eth1
 
NODE_NAME                    basil
  NETWORK_INTERFACE          eth0
    HEARTBEAT_IP             192.100.112.168
 
NODE_NAME                    sage
  NETWORK_INTERFACE          eth0
    HEARTBEAT_IP             192.100.112.184
  NETWORK_INTERFACE          eth1
  NETWORK_INTERFACE          eth2
 
HEARTBEAT_INTERVAL           1000000
NODE_TIMEOUT                 5000000
 
AUTO_START_TIMEOUT           600000000
NETWORK_POLLING_INTERVAL     2000000
 
MAX_CONFIGURED_PACKAGES      4

Package Configuration File for pkg01

This section shows the package configuration file (nfs1.conf) for the package pkg01 in this sample configuration. The comments are not shown.

PACKAGE_NAME                pkg01
PACKAGE_TYPE                FAILOVER
FAILOVER_POLICY             CONFIGURED_NODE
FAILBACK_POLICY             MANUAL
NODE_NAME	                   thyme
NODE_NAME                   basil
NODE_NAME				                   sage
AUTO_RUN                    YES
NODE_FAIL_FAST_ENABLED      NO
RUN_SCRIPT                 /usr/local/cmcluster/pkg1/pkg1.conf
RUN_SCRIPT_TIMEOUT          NO_TIMEOUT
HALT_SCRIPT                /usr/local/cmcluster/pgk1/pkg1.conf
HALT_SCRIPT_TIMEOUT         NO_TIMEOUT
SERVICE_NAME                nfs1.monitor                 
SERVICE_FAIL_FAST_ENABLED   NO                       
SERVICE_HALT_TIMEOUT        300
SUBNET                      192.100.112.0

Package Control Script for pkg01

This section shows the package control script (pkg1.cntl) for the package pkg01 in this sample configuration. Only the user-configured part of the script is shown; the executable part of the script and most of the comments have been omitted.

PATH=/sbin:/usr/bin:/usr/sbin:/etc:/bin:usr/local/
cmcluster/bin
RAIDTAB="/usr/local/cmcluster/conf/raidtab.sg"   
RAIDSTART="raidstart -c ${RAIDTAB}"
RAIDSTOP="raidstop -c ${RAIDTAB}"
VGCHANGE="vgchange -a y"                # Default
VG[0]="nfsu01"
MD[0]="/dev/md0"
LV[0]=/dev/nfsu01/lvol1; 
FS[0]=/hanfs/nfsu011; 
FS_TYPE[0]="ext2"; 
FS_MOUNT_OPT[0]="-o rw"
# FS_UMOUNT_COUNT=""
# FS_MOUNT_RETRY_COUNT=""
IP[0]="192.100.112.243"
SUBNET[0]="192.100.112.0"
HA_NFS_SERVER="yes"
#SERVICE_NAME[0]=""
#SERVICE_CMD[0]=""
#SERVICE_RESTART[0]=""

NFS Control Script for pkg01

This section shows the NFS control script (hanfs.sh) for the package pkg01 on this sample configuration on the the user-configured part of the script is shown:

XFS[0]="-o rw *:/hanfs/nfsu011"
NFS_SERVICE_NAME[0]="nfs1.monitor"
NFS_SERVICE_CMD[0]="/usr/local/cmcluster/pkg1/nfs.mon"
NFS_SERVICE_RESTART[0]="-r 0"

Package Configuration File for pkg02

This section shows the package configuration file (nfs2.conf) for the package pkg02 in this sample configuration. The comments are not shown.


PACKAGE_NAME               pkg02
PACKAGE_TYPE               FAILOVER
FAILOVER_POLICY            CONFIGURED_NODE
FAILBACK_POLICY            MANUAL
NODE_NAME                  basil
NODE_NAME                  sage
NODE_NAME                  thyme
AUTO_RUN                   YES
NODE_FAIL_FAST_ENABLED     NO
RUN_SCRIPT                 /usr/local/cmcluster/pkg2/pkg2.conf
RUN_SCRIPT_TIMEOUT         NO_TIMEOUT
HALT_SCRIPT                /usr/local/cmcluster/pgk2/pkg2.conf
HALT_SCRIPT_TIMEOUT        NO_TIMEOUT
SERVICE_NAME               nfs2.monitor
SERVICE_FAIL_FAST_ENABLED  NO
SERVICE_HALT_TIMEOUT       300
SUBNET                     192.100.112.0

Package Control Script for pkg02

This section shows the package control script (pkg2.cntl) for the package pkg02 in this sample configuration. Only the user-configured part of the script is shown; the executable part of the script and most of the comments have been omitted.

PATH=/sbin:/usr/bin:/usr/sbin:/etc:/bin:usr/local/
cmcluster/bin
RAIDTAB="/usr/local/cmcluster/conf/raidtab.sg"   
RAIDSTART="raidstart -c ${RAIDTAB}"
RAIDSTOP="raidstop -c ${RAIDTAB}"
VGCHANGE="vgchange -a y"            # Default
VG[0]="nfsu02"
MD[0]="/dev/md1"
LV[0]=/dev/ngsu02/lvol1; 
FS[0]=/hanfs/nfsu021; 
FS_TYPE[0]="ext2"; 
FS_MOUNT_OPT[0]="-o rw"
# FS_UMOUNT_COUNT=""
# FS_MOUNT_RETRY_COUNT=""
IP[0]="192.100.112.244"
SUBNET[0]="192.100.112.0"
HA_NFS_SERVER="yes"
#SERVICE_NAME[0]=""
#SERVICE_CMD[0]=""
#SERVICE_RESTART[0]=""

NFS Control Script for pkg02

This section shows the NFS control script (hanfs.sh) for the package pkg02 on this sample configuration on the the user-configured part of the script is shown:

XFS[0]="-o rw *:/hanfs/nfsu021"
NFS_SERVICE_NAME[0]="nfs2.monitor"
NFS_SERVICE_CMD[0]="/usr/local/cmcluster/pkg2/nfs.mon"
NFS_SERVICE_RESTART[0]="-r 0"

Package Configuration File for pkg03

This section shows the package configuration file (nfs3.conf) for the package pkg03 in this sample configuration. The comments are not shown.

PACKAGE_NAME              pkg03
PACKAGE_TYPE              FAILOVER
FAILOVER_POLICY           CONFIGURED_NODE
FAILBACK_POLICY           MANUAL
NODE_NAME                 sage
NODE_NAME                 thyme
NODE_NAME                 basil
AUTO_RUN                  YES
NODE_FAIL_FAST_ENABLED    NO
RUN_SCRIPT                /usr/local/cmcluster/pkg3/pkg3.conf
RUN_SCRIPT_TIMEOUT        NO_TIMEOUT
HALT_SCRIPT               /usr/local/cmcluster/pgk3/pkg3.conf
HALT_SCRIPT_TIMEOUT       NO_TIMEOUT
SERVICE_NAME              nfs3.monitor
SERVICE_FAIL_FAST_ENABLED NO
SERVICE_HALT_TIMEOUT      300
SUBNET                    192.100.112.0

Package Control Script for pkg03

This section shows the NFS control script (pkg3.cntl) for the package pkg03 in this sample configuration. Only the user-configured part of the script is shown; the executable part of the script and most of the comments have been omitted.

PATH=/sbin:/usr/bin:/usr/sbin:/etc:/bin:usr/local/
cmcluster/bin
RAIDTAB="/usr/local/cmcluster/conf/raidtab.sg"   
RAIDSTART="raidstart -c ${RAIDTAB}"
RAIDSTOP="raidstop -c ${RAIDTAB}"
VGCHANGE="vgchange -a y"                # Default
VG[0]="nfsu03"
MD[0]="/dev/md2"
LV[0]=/dev/ngsu03/lvol1; 
FS[0]=/hanfs/nfsu031; 
FS_TYPE[0]="ext2"; 
FS_MOUNT_OPT[0]="-o rw"
# FS_UMOUNT_COUNT=""
# FS_MOUNT_RETRY_COUNT=""
IP[0]="192.100.112.245"
SUBNET[0]="192.100.112.0"
HA_NFS_SERVER="yes"
#SERVICE_NAME[0]=""
#SERVICE_CMD[0]=""
#SERVICE_RESTART[0]=""

NFS Control Script for pkg03

This section shows the NFS control script (hanfs.sh) for the package pkg03 on this sample configuration on the the user-configured part of the script is shown:

XFS[0]="-o rw *:/hanfs/nfsu031"
NFS_SERVICE_NAME[0]="nfs3.monitor"
NFS_SERVICE_CMD[0]="/usr/local/cmcluster/pkg3/nfs.mon"
NFS_SERVICE_RESTART[0]="-r 0"