One service, two nodes, HA Post: 302580035

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Top Forums UNIX for Dummies Questions & Answers One service, two nodes, HA Post 302580035 by Flomaster on Wednesday 7th of December 2011 09:00:09 AM

12-07-2011

Registered User

One service, two nodes, HA

Hi all. I have two nodes taken different places. They are connected together on a network. So, i have a service, it works on one of nodes and when the node is unavailable the service should will be launched on other node.

Solution: rhel cluster, keepalive, hearbeat...may be Carp

but what if the channel in between nodes will break and servers remain to work...split brain?

And looking ahead may be will need to transfer service but with different addresses(same config but diff network ip)

If somebody worked with similar tasks prompt where to look please!! Smilie

Flomaster

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remnode

remnode(8)						      System Manager's Manual							remnode(8)

Name
       remnode - remove one or more entries from the nodes database

Syntax
       /etc/remnode [ node ]

Description
       For each given node argument, deletes the corresponding node entry (or entries) from the nodes database. The nodes database is the one used
       by DECnet.  The node is either the node address or the node name for each node entry that you want to delete.  Note, you can  specify  more
       than one node argument in a single command.

       A node address is a decimal integer in the range of 1 to 1023 for single area networks, or has the format a.n for multiarea networks, where
       a is the network area number (a decimal integer in the range of 2 to 63) and n is the node number (a decimal integer in the range of  1	to
       1023).

       A node name can be from one to six alphanumeric characters, including at least one letter.

Examples
       This command removes the entries for nodes 44.70 and Mynode from the nodes database:
       # /etc/remnode 44.70 mynode <RET>
       This command removes the entry for node lttwi from the nodes database:
       # /etc/remnode lttwi <RET>

See Also
       addnode(8), ccr(8), getnode(8), load(8), mop_mom(8), trigger(8)

																	remnode(8)