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Relocable IP address problem

niki67
Occasional Advisor

Relocable IP address problem

Hi,
I have installed a ServiceGuard for Linux on 2 node server (with RedHat AS 4.5 x86_64), and I have created e configuration file for cluster. The configuration seems to be ok, because the cluster forming correctly. Then I have installed a toolkit package for MySQL and I have runned it. The package seems to be ok, because into the log file I do not have any error. On the node, were the package started, I see the MySQL process on and the port 3306 are in listen mode. Now I try to connect with database MySQL via MySQL GUI Administrator Software. The connection start, but after few second I loss the connection. The relocable IP used for the package are pingable, but if I try to telnet to the IP on port 3306, I have a connection refused.
Someone have an idea to resolve this problem ?
Thanks in advance, Nicola.

3 REPLIES
Hemmetter
Esteemed Contributor

Re: Relocable IP address problem

Hi Nicoloa,

mysql is probably linked against libwrap thus you need a /etc/hosts.allow entry like:

mysqld: "IP" : ALLOW

rgds
HGH

niki67
Occasional Advisor

Re: Relocable IP address problem

I find the solution. The problem was that I use the same Ip relocable address for two package that starting separately one on each node, but with the same IP.
Seems that is not possible in the cluster configuration with ServiceGuard.

Hi, Nicola.
Serviceguard for Linux
Honored Contributor

Re: Relocable IP address problem

To clarify: It is not possible for the following reason. If the package on one system failed it would try to fail over to the other system running the second package. These two cannot have the same IP address.