It should be unique across the organization. Here, set-cluster -> unique cluster number assigned to the entire cluster. LLT uses /etc/llttab to set the configuration of the LLT interconnects. What Are The Various Llt Configuration Files And Their Function ? The command to check detailed LLT status is :ġ4. How To Check The Detailed Status Of Llt Links ? Whats The Maximum Number Of Llt Links (including High And Low Priority) Can A Cluster Have ?Ī cluster can have a maximum of 8 LLT links including high and low priority LLT links.ġ3. To check the status of GAB ports on various nodes :ġ2. How To Check The Status Of Various Gab Ports On The Cluster Nodes? o : VCSMM driver (kernel module needed for Oracle and VCS interface)ġ1.h : VCS (VERITAS Cluster Server: high availability daemon, HAD).b : I/O fencing (to ensure data integrity).What Are The Various Gab Ports And Their Functionalities ? Logical Volume Manager (Linux) Interview Questions It is in turn monitored by a daemon named hashadow. – the main VCS engine which manages the agents and service group. The atomic broadcast of cluster membership ensures that every node in the cluster has same information about every resource and service group in the cluster. – The group membership service part of GAB maintains the overall cluster membership information by tracking the heartbeats sent over LLT interconnects. GAB (Group membership services and atomic broadcast).It is also used to distribute the inter system communication traffic equally among all the interconnects. – LLT transmits the heartbeats over the interconnects. GAB, LLT and HAD forms the basic building blocks of vcs functionality: What Is Gab, Llt And Had And What’s Their Functionalities ? : This can be done in another way by just stopping VCS and leaving services running to minimize the downtime. start VCS on other nodes in the cluster.start the VCS on the system with modified main.cf file :.# cp -p /etc/VRTSvcs/conf/config/main.cf /etc/VRTSvcs/conf/config/main.cf_17march Edit the configuration file after taking the backup and do the changes :.Explain The Steps Involved In Offline Vcs Configuration? SSRS(SQL Server Reporting Services) Interview Questions VCS can start the NFS daemon if required, but can not take it offline if the associated service group is take offline. On-Only : VCS starts On-Only resources but does not stop them. On-Off : VCS can start and stop On-Off resource type.Persistent : VCS can only monitor these resources but can not offline or online them.To verify the syntax of the main.cf file just mention the absolute directory path to the main.cf file :ħ. How To Verify The Syntax Of The Main.cf File? To check the status of the entire cluster :Ħ. How To Check The Complete Status Of The Cluster? We can either directly view this file or use command line to view it:ĥ. The VCS cluster engine logs is located at /var/VRTSvcs/log/engine_A.log. Where Is The Vcs Engine Log File Located ? # haconf -makerw (Makes configuration writable)Ĥ.# haconf -dump -makero (Dumps in memory configuration to main.cf and makes it read-only).To set the configuration file in read-only/read-write : How To Set Vcs Configuration File (main.cf) Ro/rw ? Red Hat Linux System Administration Interview Questions The main.cf file contains the configuration of the entire cluster and is located in the directory /etc/VRTSvcs/conf/config. Where Is The Vcs Main Configuration File Located ? SG behaves as Failover within the local cluster and Parallel for the remote cluster.Ģ.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |