Server gets a high load, but no CPU use, and then later stops respond on the network
citrin+bsd at citrin.ru
Tue Sep 20 16:18:36 UTC 2016
On 2016-09-13 19:23, Stxe5le Bordal Kristoffersen wrote:
> I'm struggeling with finding out what is wrong with my current setup.
> It is a supermicro server, running 10.3-RELEASE-p7, and its main job is to
> act as a file server (smb, ftp, plex).
> about once a day, but not in any pattern, it starts getting a load of 5-10
> and usually stops responding over the network before I notice it. On the
> IPMI console, it is still alive, but each key I press usualy ends up typing
> 4-20 identical letters, making it difficult to debug.
It worth to get working remote console first.
With Supermicro server you usually have two options:
1. IPMI Serial over LAN
2. IP-KVM provided by BMC
1. IPMI SOL can be used from other BSD/Linux host using ipmitools
ipmitool .... sol activate
IPMI SOL should be configured on both IPMI (via ipmitool) and server
2. IP-KVM can be accessed using Java application from BMC web interface
or using IPMIView:
Which method do you use?
Is keypress repeated always or only when server is overloaded?
Anyway both methods should work, but has own issues:
1. Remote user for ipmitools can be activated only via web interface
(and NULL user can't be used). Default user ADMIN work via ipmitool too,
but I wanted to create separate users.
2. Java app from server's BMC web interface works only with some JRE
versions (long time ago it worked only with Sun/Oracle JDK and failed to
work with OpenJDK). IPMIView worked better for me (with less glitches)
than app from BMC web interface. I recommend to use IPMIView.
3. It is more reliable and secure to use dedicated IPMI LAN port on server.
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