--- Tzafrir Cohen <[EMAIL PROTECTED]> wrote:
> Hi > > On Thu, Jun 23, 2005 at 05:52:44PM -0700, beonice > wrote: > > > > Okay, so what makes more sense: > > 1) a remote management card that will let me > > actually log in to the machine to monitor it as > well > > as to reboot it > > vs. > > 2) a remote-accessible powerstrip that will > allow me > > to remotely reboot the server? > > Linux also has a software watchdog module. Maybe it > could work here > without extra hardware to set up. > > > > > I'm realising that sometimes the problem may > simply be > > processes out of control, and may be something > that > > doesn't require killing the entire machine, but > just > > some processes. > > > > In my current setup (an ordinary PIII 1.someting > GHz > > machine, not a server-class machine), when a > process > > goes haywire, I lose remote access via SSH, so I > drive > > to the colo, log in, sigh in frustration, and > reboot > > "because I'm already here, so why not?". > > Because you destroy any evidence of the problem. > > What processes are taking much CPU time? Are there > any relevant log > messages? Is this a case of over-swapping? (not 100% > CPU usage, but > rather large swap usage, CPU spends too much time at > "system", though > the latter may be probably normal for an Asterisk > server). > > Could you login from the console? Did you manage to > move between virtual > consoles? > > Install the package sysstat and run sar to get some > stats. Consider > adding a cron job to gather more relevant stats > every 5 minutes or every > minute. > > BTW: does asterisk run with real-time priority? try > removing it, so at > least asterisk won't hang the whole system. Though I > doubt it if this > would help. > > > > > Some of the problems were caused by my old router > ... > > since I replaced it, the need to drive the 40 > miles > > each way has gone down significantly ... in fact, > to > > pretty much zero. So I have time to contemplate my > > options here. :) > > You have an extra router there? I recall that there > was a kernel patch > to reboot the system upon recieving a specific ICMP > packet. > > -- > Tzafrir Cohen | [EMAIL PROTECTED] | > VIM is > http://tzafrir.org.il | | > a Mutt's > [EMAIL PROTECTED] | | > best > ICQ# 16849755 | | > friend > _______________________________________________ > Asterisk-Users mailing list > [email protected] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > Thanks, everyone, for all the responses and suggestions. I already do have remote access via SSH. The problem is that, occasionally, the box simply won't let me SSH in, so I have to drive over and reboot. Several of those times, it turned out to be simply the router acting up, so power-cycling the router would bring things back to life, including SSH. As I mentioned, the router has now been replaced and the new one seems a lot more stable. However, on a _few_ occasions, when I went into the colo, it turned out that the box itself was not responding to input, even on the console. At those times, the ONLY thing I could do was a hard reboot ... and yes, I'm aware of the potential hazards involved in a hard reboot. :) The frustrating thing is that since I upgraded the router, the box hasn't crashed at all ... now I'm thinking back and wondering if I imagined those occasions. :) Based on the suggestions provided by all of you, I think I'm definitely going to try to get better stats on what exactly is going on (thanks for the tip that there are production Asterisk servers with months/years uptime ... that was an eye-opener!) before I invest in any new hardware. Thanks again, everyone! Cheers, Maya ____________________________________________________ Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
