Editing SAMBA CLUSTER PUNJAB GOVT IFMS-IWDMS PROJECT (section)

== Starting the cluster ==
After the cluster configuration file is copied to the standby node, you can start the Red Hat Cluster Suite Daemons. 


Important: In order to start the cluster daemons correctly, you must be 

logged on to each node before proceeding, and to see any errors, you should have two sessions open for each node. You enter a command for one node, then enter the same command for the second. You must enter each command on both nodes, before proceeding to the next command. 


Important: 

Run tail -f /var/log/messages, on each node to watch for any errors. 


To recap, we need two sessions on each node, one running 'tailf /var/log/messages', and the other to run commands. tmux is highly recommended to make all of this easier. 


Log on to each node as root. 


To start the Red Hat Cluster Service on a member, execute the following commands on all of the nodes to start up the cluster. Since we have configured CTDB with CTDB_MANAGES_SAMBA=yes, CTDB will also start up the Samba service on all nodes and export all configured Samba shares. 


<nowiki># service cman start</nowiki>


This is the cluster manager. This starts all the relevant services. 


<nowiki># service ctdb start </nowiki>


This is the ctdb daemon.


It can take a couple of minutes for CTDB to start Samba, export the shares, and stabilize. Executing ctdb status shows the status of CTDB, as in the following example: 


<nowiki># ctdb status </nowiki>


Number of nodes:2 

pnn:0 192.168.10.81 OK (THIS NODE) 

pnn:1 192.168.10.82 OK 

Generation:1101525957 

Size:2 

hash:0 lmaster:0 

hash:1 lmaster:1 

Recovery mode:NORMAL (0) 

Recovery master:1 


When you see that all nodes are "OK", it is safe to move on to use the clustered Samba server.