HP Serviceguard Toolkit for NFS manual Failover from One Active NFS Server to Another, Pkg2 Disks

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Overview of MC/ServiceGuard NFS

Supported Configurations

 

Failover from One Active NFS Server to Another

 

Figure 1-2 shows a failover from one active NFS server node to another

 

active NFS server node.

Figure 1-2

Failover from One Active NFS Server to Another

Before Failover:

Node_A

Pkg_1

disks

Pkg_2

disks

After Failover:

Node_A

Pkg_1

disks

Node_B

Node_B

Pkg_2

disks

In Figure 1-2, Node_A is the primary node for Pkg_1, and Node_B is the primary node for Pkg_2. When Node_A fails, Node_B adopts Pkg_1 and becomes the server for both Pkg_1 and Pkg_2.

14

Chapter 1

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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 Starting File Lock Migration Starting the NFS ServicesHow the Control and Monitor Scripts Work 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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