InfoScale™ 9.0 Disaster Recovery Implementation Guide - Linux

To configure the Steward process for clusters not running in secure mode

1. Identify a system that will host the Steward process.

   To configure Steward in a dual-stack configuration, ensure that you enable IPv4 and IPv6 on the system that will host the Steward process. You must also plumb both the IPv4 and IPv6 addresses on the host system.

2. Make sure that both clusters can connect to the system through a ping command.
3. Install the VRTSvcs, VRTSvlic, and VRTSperl RPMs on the Steward system using the following command:

   # rpm -ivh VRTSperl VRTSvlic VRTSvcs

4. In both the clusters, set the Stewards attribute to the IP address of the system running the Steward process.

   The steward attribute must contain the IPv4 or IPv6 address of the steward server depending on whether the cluster node is configured with IPv4 or IPv6 respectively.

   When a cluster node is configured with IPv4, the steward attribute must be set to the IPv4 address of the steward server. When a cluster node is configured with IPv6, the Steward attribute must be set to the IPv6 address.

   For example:

   cluster cluster1938 (
   UserNames = { admin = gNOgNInKOjOOmWOiNL }
   ClusterAddress = "10.182.147.19"
   Administrators = { admin }
   CredRenewFrequency = 0
   CounterInterval = 5
   Stewards = {"10.212.100.165", "10.212.101.162"}
   }

5. On the system designated to host the Steward, start the Steward process:

   # steward -start

To configure the Steward process for clusters running in secure mode

1. Verify that the prerequisites for securing Steward communication are met.

   To verify that the wac process runs in secure mode, do the following:

   • Check the value of the wac resource attributes:

     # hares -value wac StartProgram

     The value must be "/opt/VRTSvcs/bin/wacstart - secure."

     # hares -value wac MonitorProcesses

     The value must be "/opt/VRTSvcs/bin/wac - secure."

   • List the wac process:

     # ps -ef | grep wac

     The wac process must run as "/opt/VRTSvcs/bin/wac - secure."

2. Identify a system that will host the Steward process.
3. Make sure that both clusters can connect to the system through a ping command.
4. Perform this step only if VCS is not already installed on the Steward system. If VCS is already installed, skip to step 5.

   • Install the VRTSvcs and VRTSperl rpms.

   • If the cluster UUID is not configured, configure it by using /opt/VRTSvcs/bin/uuidconfig.pl.

   • On the system that is designated to run the Steward process, run the installvcs -securityonenode command.

     The installer prompts for a confirmation if VCS is not configured or if VCS is not running on all nodes of the cluster. Enter y when the installer prompts whether you want to continue configuring security.

     For more information about the -securityonenode option, see the Cluster Server Configuration and Upgrade Guide.

5. Generate credentials for the Steward using /opt/VRTSvcs/bin/steward_secure.pl or perform the following steps:

   # unset EAT_DATA_DIR

   # unset EAT_HOME_DIR

   # /opt/VRTSvcs/bin/vcsauth/vcsauthserver/bin/vssat createpd -d 
   VCS_SERVICES -t ab

   # /opt/VRTSvcs/bin/vcsauth/vcsauthserver/bin/vssat addprpl  -t ab 
   -d VCS_SERVICES -p  STEWARD -s password

   # mkdir -p /var/VRTSvcs/vcsauth/data/STEWARD

   # export EAT_DATA_DIR=/var/VRTSvcs/vcsauth/data/STEWARD

   # /opt/VRTSvcs/bin/vcsat setuptrust  -s high -b localhost:14149

6. Set up trust on all nodes of the GCO clusters:

   # export EAT_DATA_DIR=/var/VRTSvcs/vcsauth/data/WAC

   # vcsat setuptrust -b <IP_of_Steward>:14149 -s high

7. Set up trust on the Steward:

   # export EAT_DATA_DIR=/var/VRTSvcs/vcsauth/data/STEWARD

   # vcsat setuptrust -b <VIP_of_remote_cluster1>:14149 -s high

   # vcsat setuptrust -b <VIP_of_remote_cluster2>:14149 -s high

8. In both the clusters, set the Stewards attribute to the IP address of the system running the Steward process.

   For example:

   cluster cluster1938 (
   UserNames = { admin = gNOgNInKOjOOmWOiNL }
   ClusterAddress = "10.182.147.19"
   Administrators = { admin }
   CredRenewFrequency = 0
   CounterInterval = 5
   Stewards = {"10.212.100.165", "10.212.101.162}
   }
   

9. On the system designated to run the Steward, start the Steward process:

   # /opt/VRTSvcs/bin/steward -start -secure

To stop the Steward process

• To stop the Steward process that is not configured in secure mode, open a new command window and run the following command:

  # steward -stop

  To stop the Steward process running in secure mode, open a new command window and run the following command:

  # steward -stop -secure