Hi David and Rainer, I have just started playing around with corosync + pacemaker + drbd and so far have had a good impression of it. So the next week, I would like to play around with some OCF scripts and see If I can create this for rsyslog and would be glad to submit it to the project if this works fine :)
Thanks a lot both for your help and hints on how to supervise this service. Regards! Christian On 1 June 2011 10:06, Rainer Gerhards <[email protected]> wrote: > Hi David, Christian, > > I finally have found time to look into the provided links. This looks indeed > very simple from an rsyslog PoV. However, I get the feeling that I myself may > not be the best person to do the majority of work, as to develop the actual > OCF scripts access to a test cluster, and experience with it (!), seems to be > very beneficial. So I wonder if anyone of you would be interested in helping > to get this going (with the scripts becoming part of the regular rsyslog > release). > > As far as I understand, I would need to implement some facility inside > rsyslog that can be used to check its health by the monitor script. Or would > it even be an alternative for the monitor script to just check if the rsyslog > process to be monitored is in the process list? > > Any comments, advise, collaboration is deeply appreciated. > > Rainer > PS: just in case: tomorrow is a public holiday over here, and I may leave for > a long weekend. I still thought I get this effort kicked off... > >> -----Original Message----- >> From: [email protected] [mailto:rsyslog- >> [email protected]] On Behalf Of [email protected] >> Sent: Tuesday, May 24, 2011 8:13 AM >> To: rsyslog-users >> Subject: Re: [rsyslog] High availability on rsyslog (cluster) >> >> take a look at >> >> http://linux-ha.org/wiki/Resource_Agents >> >> and >> >> http://www.linux-ha.org/doc/dev-guides/ra-dev-guide.html >> >> David Lang >> >> On Tue, 24 May 2011, Rainer Gerhards wrote: >> >> > Date: Tue, 24 May 2011 08:09:28 +0200 >> > From: Rainer Gerhards <[email protected]> >> > Reply-To: rsyslog-users <[email protected]> >> > To: rsyslog-users <[email protected]> >> > Subject: Re: [rsyslog] High availability on rsyslog (cluster) >> > >> > Thx -- sounds interesting and probably not too much work to do... >> > >> > Rainer >> > >> >> -----Original Message----- >> >> From: [email protected] [mailto:rsyslog- >> >> [email protected]] On Behalf Of [email protected] >> >> Sent: Tuesday, May 24, 2011 8:08 AM >> >> To: rsyslog-users >> >> Subject: Re: [rsyslog] High availability on rsyslog (cluster) >> >> >> >> take a look at linux-ha >> >> >> >> It's a framework to manage HA (including active/active load sharing, >> >> quorums, etc) >> >> >> >> it extends the traditional init.d startup scripts to also include a >> >> 'status' call to tell if the service is active or not. the framework >> >> calls this service periodically and if the service fails, it does a >> >> failover. >> >> With the correct configuration (and software), it can do sub-second >> >> failover. >> >> >> >> David Lang >> >> >> >> >> >> On >> >> Tue, 24 May 2011, Rainer Gerhards wrote: >> >> >> >>> David and all, >> >>> >> >>> are you aware of any high availability APIs that would enable >> >>> rsyslog >> >> to do >> >>> some kind of automatic failover in a cluster environment? I have >> >> never >> >>> specifically programmed for that and wonder if there are any options. >> >>> >> >>> Rainer >> >>> >> >>>> -----Original Message----- >> >>>> From: [email protected] [mailto:rsyslog- >> >>>> [email protected]] On Behalf Of [email protected] >> >>>> Sent: Tuesday, May 24, 2011 12:30 AM >> >>>> To: rsyslog-users >> >>>> Subject: Re: [rsyslog] High availability on rsyslog (cluster) >> >>>> >> >>>> depending on how active your logging is, you could watch the logs >> >> and >> >>>> say >> >>>> that if you don't receive any logs for 1 min (or whatever time is >> >>>> approprate), somthing is wrong. >> >>>> >> >>>> you could also generate known UDP logs to yourself and alert if >> >>>> they don't show up. >> >>>> >> >>>> David Lang >> >>>> >> >>>> On Mon, 23 May 2011, Christian Lete wrote: >> >>>> >> >>>>> Hi, >> >>>>> >> >>>>> I have a small question, I would need to setup an rsyslog >> >>>>> receiver/forwarder, listening on udp port, since some clients, >> >>>>> only support this option. I would need this service to be highly >> >>>>> available(I don't want to have two machines and having duplicated >> >>>>> information), but since this udp, I can't be for sure if the >> >> service >> >>>>> is running fine. What I thought is to indirectly check it, by >> >> having >> >>>>> another port listening on tcp and checking the tcp service, if the >> >>>>> service is not running on tcp I would assume the whole system is >> >> down >> >>>>> and would failover to the other instance of the cluster, that's >> >>>>> the only way I could think of, do you currently have another way? >> >>>>> >> >>>>> >> >>>>> thank you very much, >> >>>>> >> >>>>> Regards, >> >>>>> >> >>>>> Christian >> >>>>> _______________________________________________ >> >>>>> rsyslog mailing list >> >>>>> http://lists.adiscon.net/mailman/listinfo/rsyslog >> >>>>> http://www.rsyslog.com >> >>>>> >> >>>> _______________________________________________ >> >>>> rsyslog mailing list >> >>>> http://lists.adiscon.net/mailman/listinfo/rsyslog >> >>>> http://www.rsyslog.com >> >>> _______________________________________________ >> >>> rsyslog mailing list >> >>> http://lists.adiscon.net/mailman/listinfo/rsyslog >> >>> http://www.rsyslog.com >> >>> >> >> _______________________________________________ >> >> rsyslog mailing list >> >> http://lists.adiscon.net/mailman/listinfo/rsyslog >> >> http://www.rsyslog.com >> > _______________________________________________ >> > rsyslog mailing list >> > http://lists.adiscon.net/mailman/listinfo/rsyslog >> > http://www.rsyslog.com >> > >> _______________________________________________ >> rsyslog mailing list >> http://lists.adiscon.net/mailman/listinfo/rsyslog >> http://www.rsyslog.com > _______________________________________________ > rsyslog mailing list > http://lists.adiscon.net/mailman/listinfo/rsyslog > http://www.rsyslog.com > _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com
