oracle cluster management-tools utilities

$ crsctl -help

$srvctl <command> -h 

#Start Up and Stop Clusterware

$crsctl start cluster –all
$ crsctl start cluster –n k2r720n1

#Start the Oracle High Availability Services daemon (OHASD) and the Clusterware service stack together on the local server only

$crsctl start crs

#Managing Oracle Clusterware

 check the cluster status: $ crsctl check cluster {-all}

Check the CRS status with the following command: $ crsctl check crs

#Check the OHASD status:

crsctl check has

#Check the current status of all the resources :   crsctl status resource -t

#Managing OCR and the Voting Disk

$ ocrcheck

$ ocrdump

#show the backup information  

ocrconfig –showbackup

#The steps to restore OCR from a backup file are as follows:

1.  Identify the backup by using the ocrconfig -showbackup command.
2.  Stop the clusterware on all the cluster nodes.
3.  Perform the restore with the restore command:ocrconfig –restore file_name
4.  Restart the crs and do an OCR integrity check by using cluvfy comp ocr.

#use the following command to check the VD location

crsctl query css votedisk

#Managing CRS Resources srvctl utility can be used to manage the resources that the Clusterware manages

Check the SCAN configuration of the cluster:  $srvctl config scan

Check the node VIP status : srvctl status vip -n knewracn1

Check the node apps :   srvctl status nodeapps -n knewracn1

#Adding a new node to the existing cluster

Cloning Grid Infrastructure Home (cluster/ASM)
Cluster configuration
Cloning RDBMS home 

#From the first node of the cluster, execute the following command

$ cluvfy stage –pre nodeadd –n rac3 –fixup -verbose

$ $GRID_HOME/oui/bin/addNode.sh –silent "CLUSTER_NEW_NODES={rac3}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={rac3_vip}"

$ cluvfy stage –post nodeadd –n rac3
$ crsctl check cluster –all                     --verify the cluster health from all nodes
$ olsnodes –n                                        -- to list all existing nodes in a cluster

$ORACLE_HOME/oui/bin/addNode.sh "CLUSTER_NEW_NODES={rac3}"

#Removing a Node

#identify if a node is pinned and how to unpin the node:  $ olsnodes –n –s -t

$ crsctl unpin css –n rac3

$GRID_HOME/deinstall/deinstall –local

$crsctl delete node –n rac3

$GRID_HOME/oui/bin/runInstaller –updateNodeList ORACLE_HOME=$GRID_HOME  cluster_nodes={rac1,rac2} CRS=TRUE -silent

$GRID_HOME/oui/bin/runInstaller –updateNodeList ORACLE_HOME=$ORACLE_HOME  cluster_nodes={rac1,rac2} CRS=TRUE –silent

$cluvfy stage –post nodedel –n rac3 –verbose
$olsnodes –n –s -t

#Clean up the following directories manually on the node that was just dropped:
/etc/oraInst.loc, /etc/oratab, /etc/oracle/ /tmp/.oracle, /opt/ORCLmap