HP Serviceguard Toolkit for NFS Cascading Failover with Three Servers after One Server Fails

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Sample Conﬁgurations

Example Three - Three-Server Cascading Failover

	Figure 3-6 shows the cascading failover conﬁguration after host thyme
	has failed. Host basil is the ﬁrst adoptive node conﬁgured for pkg01,
	and host sage is the ﬁrst adoptive node conﬁgured for pkg02.
Figure 3-6	Cascading Failover with Three Servers after One Server Fails

thyme

pkg01

IP = 15.13.114.243

VG[0] = nfsu01

LV[0] = /dev/nfsu01/lvol1

FS[0] = /hanfs/nfsu011

XFS[0] = /hanfs/nfsu011

pkg02

IP = 15.13.114.244

VG[0] = nfsu02

LV[0] = /dev/nfsu02/lvol1

FS[0] = /hanfs/nfsu021

XFS[0] = /hanfs/nfsu021

basil

sage

76

Chapter 3

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Contents Managing MC/ServiceGuard NFS A.11.23.02 EditionLegal Notices Contents Index Figures Figures NFS Overview of MC/ServiceGuard NFS Limitations of MC/ServiceGuard NFS Overview of the NFS File Lock Migration Feature Overview of the NFS File Lock Migration Feature Supported Conﬁgurations Simple Failover to an Idle NFS Server Pkg1 disksFailover from One Active NFS Server to Another Pkg2 DisksHost Conﬁgured as Adoptive Node for Multiple PackagesCascading Failover with Three Adoptive Nodes Server-to-Server Cross Mounting NFS NFSSupported Conﬁgurations How the Control and Monitor Scripts Work Starting the NFS ServicesStarting File Lock Migration Halting the NFS Services Monitoring the NFS Services On the Client Side Installing and Conﬁguring Installing and Conﬁguring MC/ServiceGuard NFS Installing MC/ServiceGuard NFS ReadmeCmmakepkg -p /opt/cmcluster/nfs/nfs.conf Monitoring NFS/TCP Services with MC ServiceGuard NFS ToolkitChapter Before Creating an MC/ServiceGuard NFS Package NUMNFSD=10 Before Creating an MC/ServiceGuard NFS Package Mount -o nointr relocatableip/usr/src /usr/src Conﬁguring an MC/ServiceGuard NFS Package Copying the Template Files Editing the Control Script nfs.cntl IP0=15.13.114.243 SUBNET0=15.13.112.0 Lower Etc/hosts ﬁle Conﬁguring an MC/ServiceGuard NFS Package Conﬁguring an MC/ServiceGuard NFS Package Editing the NFS Control Script hanfs.sh Netswitchingenabled Editing the File Lock Migration Script nfs.ﬂm Conﬁguring an MC/ServiceGuard NFS Package Editing the NFS Monitor Script nfs.mon Editing the Package Conﬁguration File nfs.conf Conﬁguring an MC/ServiceGuard NFS Package Conﬁguring Server-to-Server Cross-Mounts Optional SNFS0=nfs1/hanfs/nfsu011CNFS0=/nfs/nfsu011 Conﬁguring an MC/ServiceGuard NFS Package Run the cluster using the following command cmruncl -v-f Conﬁguring an MC/ServiceGuard NFS Package Chapter Sample Conﬁgurations Sample Conﬁgurations Example One Three-Server Mutual Takeover Basil SageThree-Server Mutual Takeover after One Server Fails Cluster Conﬁguration File for Three-Server Mutual Takeover Package Conﬁguration File for pkg01 NFS Control Scripts for pkg01 Nfs.cntl Control ScriptPackage Conﬁguration File for pkg02 NFS Control Scripts for pkg02 Package Conﬁguration File for pkg03 NFS Control Scripts for pkg03 Example Two One Adoptive Node for Two Packages with File Lock MigrationSage Basil Pkg02 VOLUMEGROUP/dev/nfsu01 VOLUMEGROUP/dev/nfsu02 Package Conﬁguration File for pkg01 NFS Control Scripts for pkg01 Hanfs.sh Control Script NFS File Lock Migration and Monitor Scripts for pkg01 Nfs.ﬂm ScriptPackage Conﬁguration File for pkg02 NFS Control Scripts for pkg02 NFSFLMSCRIPT=$0%/*/nfs2.flm NFS File Lock Migration and Monitor Scripts for pkg02 Example Three Three-Server Cascading FailoverCascading Failover with Three Servers after One Server Fails VOLUMEGROUP/dev/nfsu01 VOLUMEGROUP/dev/nfsu02 Package Conﬁguration File for pkg01 NFS Control Scripts for pkg01 NODENAMEthyme NODENAMEsage NODENAMEbasil IP0=15.13.114.244 SUBNET0=15.13.112.0 Example Four Two Servers with NFS Cross-Mounts Thyme Basil Cluster Conﬁguration File for Two-Server NFS Cross-Mount NODENAMEthyme NODENAMEbasil NFS Control Scripts for pkg01 SNFS0=nfs1/hanfs/nfsu011 CNFS0=/nfs/nfsu011 NODENAMEbasil NODENAMEthyme NFS Control Scripts for pkg02 SNFS0=nfs2/hanfs/nfsu021 CNFS0=/nfs/nfsu021 Index Index Package conﬁguration ﬁle nfs.conf default values

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