#FridaysForFuture in #Rostock

Heute fanden in vielen, vielen Städten weltweit Demos gegen den Klimawandel unter dem Motto #FridaysForFuture statt. Auch in Rostock. Und zwar quasi arbeitnehmerfreundlich um 12 Uhr am Kröpeliner Tor, so daß ich heute einfach ein bißchen die Mittagspause ausdehnte musste,um die vielen Schülerinnen und Schülern zu unterstützen, die ihr Grundrecht auf Demonstrationsfreiheit in Anspruch nahmen.… Continue reading #FridaysForFuture in #Rostock

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Too much disk IO on sda in RAID10 setup – part 2

Some days ago I blogged about my issue with one of the disks in my server having a high utilization and latency. There have been several ideas and guesses what the reason might be, but I think I found the root cause today: SMART Self-test log structure revision number 1Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error#… Continue reading Too much disk IO on sda in RAID10 setup – part 2

Adding NVMe to Server

My server runs on a RAID10 of 4x WD RAID 2 TB disks. Basically those disks are fast enough to cope with the disk load of the virtual machines (VMs). But since many users moved away from Facebook and Google, my Friendica installation on Nerdica.Net has a growing user count putting a large disk I/O… Continue reading Adding NVMe to Server

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Xen & Databases

I’m running PostgreSQL and MySQL on my server that both serve different databases to WordPress, Drupal, Piwigo, Friendica, Mastodon, whatever… In the past the databases where colocated in my mailserver VM whereas the webserver was running on a different VM. Somewhen I moved the databases from domU to dom0, maybe because I thought that the… Continue reading Xen & Databases

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Politik, Wahlkampf & Grundrechte

Ich halte mich ja seit geraumer Zeit mit Beiträgen hier im Blog zurück. Nicht, weil es nicht notwendig sei, sondern eher im Gegenteil: all die bisherigen Beiträge sind auch weiterhin größtenteils gültig, da sich nichts am zugrundelegenden Problem geändert hat. Doch es ist irgendwie müßig, immer und immer wieder dasselbe schreiben zu müssen. Doch einiges… Continue reading Politik, Wahlkampf & Grundrechte

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Upgrade to Debian Stretch – GlusterFS fails to mount

Before I upgrade from Jessie to Stretch everything worked as a charme with glusterfs in Debian. But after I upgraded the first VM to Debian Stretch I discovered that glusterfs-client was unable to mount the storage on Jessie servers. I got this in glusterfs log: [2017-06-24 12:51:53.240389] I [MSGID: 100030] [glusterfsd.c:2454:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs… Continue reading Upgrade to Debian Stretch – GlusterFS fails to mount

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