840 reputation
410
bio website deranfangvomende.wordpress.co…
location Germany
age
visits member for 3 years, 1 month
seen Jan 28 at 0:37

UNIX Sysadmin, Server hugger and cluster fixer, Monitoring addict (Check_MK). Working for you freelance as Consultant for Troubleshooting and Training. Training for Monitoring, Unix/Storage, Ceph.

active LOPSA member (www.lopsa.org)

Trying to build the virtual paradise.


Jan
24
revised Displaying a remote SSL certificate details using CLI tools
added 92 characters in body
Jan
24
answered Displaying a remote SSL certificate details using CLI tools
Jan
19
revised Multiple physical volumes in a block device
added 313 characters in body
Jan
7
comment What causes repeated linux NFS client side RPC credential refreshing?
iirc noac also just concerns credential caching, so writes to permission metadata are immediate, no "writes". Didn't edit since i'm not all sure now.
Jan
7
answered Allignment of ext3 partition on LVM RAID volume group
Jan
7
answered Multiple physical volumes in a block device
Jan
7
comment How to find the physical volume(s) that hold a logical volume in LVM
One thing, it doesn't work with lvm mirrors enabled. There it'll just show "lvname_rimage0,lvname_rimage1" instead of the underlying disks. (not your fault, the command and the mirroring itself is badly designed). Even then it's still good to spot unmirrored lv's. Just be careful not to fully rely on the output because the above.
Dec
11
awarded  Yearling
Sep
27
comment Best compression for ZFS send/recv
Thanks a lot for this post. Looking at zfs send more closely I very quickly got the feeling that it has a bad behaviour (aka "design") when sending to a latency-bound target. After about a dozen results telling that zfs can't possibly ever be to blame for anything. I am very grateful you took the time to look into it and posted your results.
Sep
24
awarded  Autobiographer
Sep
24
comment What causes repeated linux NFS client side RPC credential refreshing?
the readdirplus issue has caused issues to many people, it is incredibly stupid design to turn off the feature when it's most needed. But as to the issue, I think this is caused by either "noac" or wrong "actimeo" settings.
Sep
24
answered OCSP validation - unable to get local issuer certificate
Sep
2
comment nagios contact groups to check_mk
Puzzled about one thing: Why are you doing 4) and 5) and not just 5)
Aug
31
revised nagios contact groups to check_mk
fix missing word
Aug
31
answered nagios contact groups to check_mk
Aug
13
comment What is the easiest way to upgrade my existing Perl 5.14 to Perl 5.16 on FreeBSD 9 using the ports system?
Thank you a lot for this walkthrough. More helpful than "use this command that works for me, and lets not talk about the other cases" :)
Jul
28
answered juniper ex2200c get temperature via snmp
Jun
15
comment Can't create/write to file '/tmp/#sql_xxxx.MYI' (Errcode: 13)
thanks for including the mysqladmin output. I've now used this to donate a dedicated tmpdir for mysql, adding a little security.
Jun
6
comment Check to ping google from host in check_mk using WATO
Errors from ping wil be printed prior to the echo. When that happens, your local check section of the agent output will go to hell
Jun
4
comment ntpd default rate limiting?
If the servers fall back to the stratum 10 local clock it is hardly an issue if the monitoring, just because it noticed and did alert. :>