[collectd] Troubleshoot starting up collectd service

[Mark Moseley]

On Wed, Apr 20, 2011 at 10:05 AM, Pander <pander at users.sourceforge.net> wrote:
> On 2011-04-20 18:22, Mark Moseley wrote:
>> On Wed, Apr 20, 2011 at 8:39 AM, Pander <pander at users.sourceforge.net> wrote:
>>> On 2011-04-20 17:33, Pander wrote:
>>>> Hi all,
>>>>
>>>> I have installed collectd on Ubuntu server and would like to run its
>>>> service for receiving data from clients.
>>>>
>>>> I have enabled network plugin and uncommented and changed this part:
>>>>
>>>>         <Listen "127.0.0.1" "25826">
>>>>                 SecurityLevel Encrypt
>>>>                 AuthFile "/etc/collectd/passwd"
>>>>                 Interface "eth0"
>>>>         </Listen>
>>>>
>>>> and created the passwd file with 'username: password' as contents.
>>>
>>> and /var/log/syslog says nothing interesting:
>>>
>>> Apr 20 17:34:12 hostname collectd[32172]: Exiting normally.
>>> Apr 20 17:34:12 hostname collectd[32172]: collectd: Stopping 5 read threads.
>>> Apr 20 17:34:12 hostname collectd[32172]: rrdtool plugin: Shutting down
>>> the queue thread. This may take a while.
>>> Apr 20 17:34:12 hostname collectd[32172]: network plugin: Stopping
>>> receive thread.
>>> Apr 20 17:34:12 hostname collectd[32172]: network plugin: Stopping
>>> dispatch thread.
>>> Apr 20 17:34:12 hostname collectdmon[32171]: Info: collectd terminated
>>> with exit status 0
>>> Apr 20 17:34:12 hostname collectdmon[32171]: Info: shutting down collectdmon
>>> Apr 20 17:34:14 hostname collectd[5836]: Initialization complete,
>>> entering read-loop.
>>>
>>> and I have checked the ports with nmap (tcp and udp).
>>>
>>>> After restarting collectd I don't see a service on port 25826. What
>>>> should I do to find the problem?
>>>>
>>>> Thanks,
>>
>> It might not like that you've configured it to try to listen to
>> 127.0.0.1 on eth0. Does it listen correctly if you change Interface to
>> "lo"?
>
> OK, I will use eth0 because I'd like to accept connections from outside.
> I have tried with its IP address and eth0.
>
> Is nmap the way to check if the port is open te receive connections?
>
> One thing has changed, syslog says:
>
> Apr 20 19:01:12 hostname collectd[6502]: Initialization complete,
> entering read-loop.
> Apr 20 19:02:48 hostname snmpd[1132]: Connection from UDP:
> [83.96.x.y]:45511->[83.96.x.y]
>
> Does this mean it is able to receive?

Check: "netstat -ulpn" for that port, on the same box you're running
collectd on. I can't say I've tried it with the SecurityLevel/AuthFile
stuff turned on before though, so no idea if there are any
complications there. If there is some other issue, you might want to
turn LogLevel to debug.