Virtual IP is not getting assign on db servers

[Tarak Ranjan]

Hi List,


I am verymuch new to this mysql-MMM. I have followed "http://mysql-
mmm.org/mmm2:guide" to installed in my 4 db boxes.

[root@dbmonitor ~]# mmm_control show
db1(192.168.65.180) master/ONLINE. Roles: writer(192.168.65.193)
db2(192.168.65.183) master/ONLINE. Roles:
db3(192.168.65.190) slave/ONLINE. Roles:
db4(192.168.65.191) slave/ONLINE. Roles: reader(192.168.65.194)


But this 192.168.65.193 & 192.168.65.194 not getting assigned
anywhere.

/var/log/mysql-mmm/mmm_agentd.log

DB3 -Slave 192.168.65.190
---------------
2011/09/09 15:29:13 INFO Changing active master to 'db1'
2011/09/09 15:29:13 FATAL Failed to change master to 'db1': undef
2011/09/09 15:29:16 INFO Changing active master to 'db1'
2011/09/09 15:29:16 FATAL Failed to change master to 'db1': undef
2011/09/09 15:29:19 INFO Changing active master to 'db1'
2011/09/09 15:29:19 FATAL Failed to change master to 'db1': undef


DB4-Slave 192.168.65.191
---------------
2011/09/09 15:30:15 FATAL Failed to change master to 'db1': undef
2011/09/09 15:30:15 FATAL Couldn't configure IP '192.168.65.194' on
interface 'eth0': undef
2011/09/09 15:30:18 INFO Changing active master to 'db1'
2011/09/09 15:30:18 FATAL Failed to change master to 'db1': undef
2011/09/09 15:30:18 FATAL Couldn't configure IP '192.168.65.194' on
interface 'eth0': undef


DB1-Master 192.168.65.180
----------------
2011/09/09 15:30:37 FATAL Couldn't allow writes: undef
2011/09/09 15:30:40 FATAL Couldn't allow writes: undef
2011/09/09 15:30:43 FATAL Couldn't allow writes: undef
2011/09/09 15:30:46 FATAL Couldn't allow writes: undef
2011/09/09 15:30:49 FATAL Couldn't allow writes: undef
2011/09/09 15:30:52 FATAL Couldn't allow writes: undef

DB2 -Master 192.168.65.183
----------------
2011/09/09 14:49:03 FATAL Couldn't configure IP '192.168.65.195' on
interface 'eth0': undef
2011/09/09 14:49:03 FATAL Couldn't configure IP '192.168.65.195' on
interface 'eth0': undef
2011/09/09 14:49:03 INFO We have some new roles added or old rules
deleted!
2011/09/09 14:49:03 INFO Deleted: reader(192.168.65.195)
2011/09/09 14:49:03 FATAL Couldn't clear IP '192.168.65.195' from
interface 'eth0': undef
2011/09/09 14:49:03 FATAL Couldn't clear IP '192.168.65.194' from
interface 'eth0': undef
2011/09/09 14:49:03 FATAL Couldn't deny writes: undef
2011/09/09 14:49:03 FATAL Couldn't clear IP '192.168.65.193' from
interface 'eth0': undef



Required your help here....

/\
Tarak

[Istvan Podor]

Hi Tarak,

Please start the agent in debug mode and check the error on stout please.

Istvan

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[Manuel]

Hi Tarak,

mmm assigns IPs with ip addr, please check with "ip addr" if you can see
the IP.
Further, in your mmm_common* did you define eth0 or eth1 as interface?

Cheers,
Manuel.

--
Manuel Arostegui Ramirez.

Electronic Mail is not secure, may not be read every day, and should not
be used for urgent or sensitive issues.

[Tarak Ranjan]

Hi,

It's being resolved by creating a softlink of "/usr/libexec/mysql-mmm"
to "/usr/lib/mysql-mmm/" .


Thanks for support.

/\
Tarak

[István Podor]

Hi all,

 I think it's an mmm hardcoded bug thing, iirc it's linux distro dependent. The package/binaries works with a dynamic path, but the cnf files are hardcoded

Istvan

On Oct 3, 2012, at 6:33 PM, Frank <fz...@rbcon.com> wrote:

Hi，Tarak

I got exact same problem, and after creating a softlink of '/usr/libexec/mysql-mmm' to '/usr/lib/mysql-mmm', the ip can be changed and problem resolved. 

I want to know whether this is mysql-mmm bug or that is my setup problem, can you explain more detail about this solution?

Thanks

Frank

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