Category: VCS Maintenance

VCS information Center

  VCS for Beginners Read – VCS for Beginners – Getting Started with VCS Read – VCS for Beginners– Cluster Membership & IO Fencing Read – VCS for Beginners – Understand Jeopardy Condition with real time scenerio Read – VCS for Beginners – Configuring Veritas Cluster...

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VCS : Configuring Veritas Cluster and Configuration files

About the VCS configuration files VCS configuration files include the following: main.cf The installer creates the VCS configuration file in the /etc/VRTSvcs/conf/config folder by default during the VCS configuration. The main.cf file contains the minimum information that defines the cluster and its nodes. types.cf The file...

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VCS : Sample VCS configuration with Single Oracle Instance

  Sample VCS configuration file for single Oracle instance Review the sample configuration with a resource of type Oracle that is configured as follows in main.cf file. The shared disk groups and volumes in the cluster are configured as resources of type DiskGroup and Volume respectively....

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VCS : Starting LLT , GAB and VCS manually

  VCS uses two components, LLT and GAB, to share data over private networks among systems. These components provide the performance and reliability that VCS requires. LLT (Low Latency Transport) provides fast, kernel-to-kernel communications, and monitors network connections. LLT configuration files are as follows: /etc/llthosts—lists all...

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VCS : verify if the VERITAS Cluster Server configuration database is open(RW) or closed(RO))

Use the following command to display the current state of the Veritas Cluster Server(VCS) configuration database: # haclus -display | grep ReadOnly ReadOnly 1 A result code of 1 indicates the configuration database is in a closed(ReadOnly) state. A result code of 0 indicates the configuration...

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VCS : Configure /etc/llttab

The /etc/llttab file must specify the system’s ID number (or its node name), its cluster ID, and the network links that correspond to the system. In addition, the file can contain other directives. Refer also to the sample llttab file in /opt/VRTSllt. Run the dladm show-dev command...

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VCS : Sample Configuration to add new Service Groups

Below are the some sample configurations on how do we  configure new service groups  in two common scenarios i.e. while VCS online and while the  VCS is stopped. It is good to know this information to perform various dynamic configuration to VCS cluster without disrupting the...

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VCS : Adding new node to the existing cluster

Install the  VCS software manually  on server check the  packages  and install the license key. 1. ./Installvcs -installonly Configuring LLT and GAB: Create the LLT and GAB configuration files on the new node and update the files on the existing nodes. To configure LLT 1 Create...

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