Cmon failed start with error: (ERROR) Failed to get hostid

[Xposed]

When I try to start cmon it gaves me this error:

Nov 18 12:38:00 : (INFO) Created table 'cpu_stats'
Nov 18 12:38:00 : (INFO) Created table 'mysql_repl_link'
Nov 18 12:38:00 : (INFO) Created table 'hosts'
Nov 18 12:38:00 : (INFO) Created table 'processes'
Nov 18 12:38:00 : (INFO) Created table 'host_process_map'
Nov 18 12:38:00 : (INFO) Created table 'cpu_stats'
 ok
[1]- Terminated tail -f /var/log/cmon.log
-bash-3.2# Nov 18 12:38:01 : (INFO) Done
Nov 18 12:38:01 : (INFO) Registering managed cluster with cluster id=1

Nov 18 12:38:02 : (INFO) Managed cluster is already registered - cluster id=1

Nov 18 12:38:02 : (ERROR) Failed to get hostid
Nov 18 12:38:02 : (ERROR) Critical error (mysql error code -1) occured - shutting down

How can we fix it? Thanks.

[johan (johan-severalnines)]

Hi,
Thanks for the report.

What does:

hostname
and
hostname -i

print out?

BR
johan

On 2011-11-22 22.57, Xposed wrote:
> ** Description changed:
>
> When I try to start cmon it gaves me this error:
>
> Nov 18 12:38:00 : (INFO) Created table 'cpu_stats'
> Nov 18 12:38:00 : (INFO) Created table 'mysql_repl_link'
> Nov 18 12:38:00 : (INFO) Created table 'hosts'
> Nov 18 12:38:00 : (INFO) Created table 'processes'
> Nov 18 12:38:00 : (INFO) Created table 'host_process_map'
> Nov 18 12:38:00 : (INFO) Created table 'cpu_stats'
> - ok
> + ok
> [1]- Terminated tail -f /var/log/cmon.log
> -bash-3.2# Nov 18 12:38:01 : (INFO) Done
> Nov 18 12:38:01 : (INFO) Registering managed cluster with cluster id=1
>
> Nov 18 12:38:02 : (INFO) Managed cluster is already registered -
> cluster id=1
>
> Nov 18 12:38:02 : (ERROR) Failed to get hostid
> Nov 18 12:38:02 : (ERROR) Critical error (mysql error code -1) occured - shutting down
>
> -
> How can we fix it? Thanks.
>

[Xposed (sirxp0sed)]

The output is:

-bash-3.2# hostname
s214.transfer.ro
-bash-3.2# hostname -i
195.66.124.120
-bash-3.2#

[johan (johan-severalnines)]

Hi,

Can you explain how you got into this?
Did you change connectstring or anything like this?

BR
johan

On 2011-12-09 19.37, Xposed wrote:
> The output is:
>
> -bash-3.2# hostname
> s214.transfer.ro
> -bash-3.2# hostname -i
> 195.66.124.120
> -bash-3.2#
>

[Xposed (sirxp0sed)]

I don't change anything.... One night the cmon goes down and the next when i start cmon it says me this error:(

[Xposed (sirxp0sed)]

Ahhh... yes i change the Ip for connectstring because we move the NDB_MGMD server to another IP...

[johan (johan-severalnines)]

Hi,

Ok - I will close this.
For the next issue you get, would be great if you can log it on
support.severalnines.com instead of on launchpad.

BR
johan

On 2011-12-12 22.16, Xposed wrote:
> Ahhh... yes i change the Ip for connectstring because we move the
> NDB_MGMD server to another IP...
>

[Xposed (sirxp0sed)]

But after the ip change it still dosn't work...

[johan (johan-severalnines)]

Hi,
If you look in the tables:

select * from cmon.hosts
select * from cmon.mysql_server
select * from cmon.cluster

Do you have the correct IPs/hostnames there?

BR
johan

On 2011-12-14 19.17, Xposed wrote:
> But after the ip change it still dosn't work...
>

[Xposed (sirxp0sed)]

It works after i edit the cmon.hosts row. Thanks