Re: [Nut-upsuser] ordered shutdown
Hi Arjen, Arjen de Korte schrieb: > Citeren Lars Täuber : > In that case, I probably don't understand what you're trying to do. sorry for my english. > So you want the servers to keep running as long as possible and the > clients should go down after a power outage of (say) five minutes? > That's possible too. Let's assume we have a lot of servers and each should start it's shutdown sequence at a different level of time left of the ups running on batteries. Could you give an example of a configuration for two different servers then? Thanks Lars ___ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
Re: [Nut-upsuser] ordered shutdown
Hallo Arjen, Arjen de Korte schrieb: > Citeren Lars Täuber : > > [...] > The above values would be an extremely bad idea and this is also not > how NUT works. See the FAQ. > [...] > What you describe is not how NUT works. Until the UPS signals that the > battery is low, it is business as usual (see the FAQ for the reasons > behind this). Once the UPS signals battery low, all timers are started > at the same time and there is no way to stop the following sequence of > events. The systems *will* go down. If the power returns during the > shutdown sequence, the shutdown sequence will be completed and NUT > will power-cycle the UPS to make sure the connected systems are > restarted. it seems I understood how NUT works now. But then it is not the solution for us. The reason simply is we have one big ups for so many servers. And it's a bad idea to have one point in time to shutdown all servers. So one »battery low« signal for all servers is not what we need. There are some servers that should work as long as possible and shut down shortly (2 minutes) before the ups shuts off. But these server also should try to shut down and that's why they need the connection to the ups too. Is it possible with NUT to tell upsd to initiate a shutdown by the means of upssched? As long as I understood upssched doesn't run as root. So it can't be used to initiate a shutdown directly. Thanks Lars ___ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
Re: [Nut-upsuser] ordered shutdown
Hallo Arjen, Arjen de Korte schrieb: > Citeren Charles Lepple : > > Basically, this needs to be dealt with in the client application. > Since we don't provide Windows clients (which Lars apparently is > using), I have no idea if this is possible with those. yes, we have a mixed enviroment with mostly Linux boxes but also some Windows and MacOS servers. > FINALDELAY 0 (for the clients) > FINALDELAY X (for the SQL servers) > FINALDELAY X+Y (for the NFS servers) > > The values of X and Y depend on how long the clients need for > finishing their business with the SQL servers (X) and how long the SQL > servers needs for doing their thing on the NFS servers (Y). This seems dangerous to me. Just think of the following situation: The ups has a normally 60 minutes of time left before shutdown after power loss. In this case I would use 40 mins for X and 5 mins for Y. Lets assume a power outage of 38 min has happend before it power gets back. The servers still run and the shutdown sequences get canceled. The batteries now can bridge only 22 mins on a second outage. This would lead to an unexpected shutoff for those servers. The battery charge status has to get into account additionally to manage such situations. Thanks anyway Lars ___ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
Re: [Nut-upsuser] ordered shutdown
Hi there again, because nobody replied I decided to enhance apcupsd with the knowlegde of the snmp communication to our UPS. It works for me. I'm unsubscribing some time soon. Regards Lars Lars Täuber schrieb: > Hallo there. > > I'm new to this list and also to NUT. > Our previous ups-system was APC based and apcupsd was serving the ordered > shutdowns in our network. > > Our new ups is made by MGE and that's why we can't use apcupsd anymore. This > led us into trouble. > Our network system is quite complex and we need shutdown sequence levels. The > servers depend on each other because of NFS and SQL connections and the like. > We have one 60kVA UPS and more than 20 servers/routers/SANs supplied with > energy by it. > > With apcupsd we could confiure the servers to shutdown on a specified battery > level or the remaining time. Is there a way to do this with NUT anyhow? > I thought about using the schedule mechanism with own bash scripts but this > won't work on windows. In the docs is nothing written about such a feature. > BTW, is there a feature request website for NUT somewhere? > > Thanks > Lars > > ___ > Nut-upsuser mailing list > Nut-upsuser@lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser -- Informationstechnologie Berlin-Brandenburgische Akademie der Wissenschaften Jägerstrasse 22-23 10117 Berlin Tel.: +49 30 20370-352 http://www.bbaw.de ___ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
[Nut-upsuser] ordered shutdown
Hallo there. I'm new to this list and also to NUT. Our previous ups-system was APC based and apcupsd was serving the ordered shutdowns in our network. Our new ups is made by MGE and that's why we can't use apcupsd anymore. This led us into trouble. Our network system is quite complex and we need shutdown sequence levels. The servers depend on each other because of NFS and SQL connections and the like. We have one 60kVA UPS and more than 20 servers/routers/SANs supplied with energy by it. With apcupsd we could confiure the servers to shutdown on a specified battery level or the remaining time. Is there a way to do this with NUT anyhow? I thought about using the schedule mechanism with own bash scripts but this won't work on windows. In the docs is nothing written about such a feature. BTW, is there a feature request website for NUT somewhere? Thanks Lars ___ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
