Date: Fri, 10 Feb 2017 00:46:58 +0100 From: Polytropon <freebsd@edvax.de> To: The Doctor <doctor@doctor.nl2k.ab.ca> Cc: freebsd-questions@freebsd.org Subject: Re: Hung server Message-ID: <20170210004658.8d24fd54.freebsd@edvax.de> In-Reply-To: <20170209232150.GA11245@doctor.nl2k.ab.ca> References: <20170209232150.GA11245@doctor.nl2k.ab.ca>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 9 Feb 2017 16:21:50 -0700, The Doctor wrote: > Question? I s there a way of detecting why a server > hangs? Can you be more specific? > Within the last month my Primary Server > has been going into infinity mood as like to > call it for about 2 hours at a time. > > No signal can get through. So you're observing the "networking aspect" of that server? Do you have a non-network connection (direct console, serial line, IPMI or something like that) that you can examine? > Is this a kernel or app issue? Could be even more, for example a firewall issue. A system completely hanging often indicates a lower level problem, for example related to the kernel or a device driver, but without proper diagnostics, it's really hard to tell. As I said, if everything you can observe happens on the "network aspect", it could as well be a firewall (of the server, or _infront of_ the server) that just blocks traffic while the programs the server runs keep working as intended... -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20170210004658.8d24fd54.freebsd>