Hello Thomas, we export the Logs using systemd-journald-remote / -upload. Long term retention can be done configuring an external syslog / elk / .. using our config file. -- Martin Verges Managing director Mobile: +49 174 9335695 E-Mail: martin.verges@xxxxxxxx Chat: https://t.me/MartinVerges croit GmbH, Freseniusstr. 31h, 81247 Munich CEO: Martin Verges - VAT-ID: DE310638492 Com. register: Amtsgericht Munich HRB 231263 Web: https://croit.io YouTube: https://goo.gl/PGE1Bx Am Di., 24. März 2020 um 08:47 Uhr schrieb Thomas Schneider < 74cmonty@xxxxxxxxx>: > Hello Martin, > > I suspect you're using a central syslog server. > Can you share information which central syslog server you use? > Is this central server running on ceph cluster, too? > > Regards > Thomas > > Am 23.03.2020 um 09:39 schrieb Martin Verges: > > Hello Thomas, > > by default we allocate 1GB per Host on the Management Node, nothing on the > PXE booted server. > > This value can be changed in the management container config file > (/config/config.yml): > > ... > > logFilesPerServerGB: 1 > > ... > After changing the config, you need to restart the mgmt container. > > -- > Martin Verges > Managing director > > Mobile: +49 174 9335695 > E-Mail: martin.verges@xxxxxxxx > Chat: https://t.me/MartinVerges > > croit GmbH, Freseniusstr. 31h, 81247 Munich > CEO: Martin Verges - VAT-ID: DE310638492 > Com. register: Amtsgericht Munich HRB 231263 > > Web: https://croit.io > YouTube: https://goo.gl/PGE1Bx > > > Am Mo., 23. März 2020 um 09:30 Uhr schrieb Thomas Schneider < > 74cmonty@xxxxxxxxx>: > >> Hello Martin, >> >> how much disk space do you reserve for log in the PXE setup? >> >> Regards >> Thomas >> >> Am 22.03.2020 um 20:50 schrieb Martin Verges: >> > Hello Samuel, >> > >> > we from croit.io don't use NFS to boot up Servers. We copy the OS >> directly >> > into the RAM (approximately 0.5-1GB). Think of it like a container, you >> > start it and throw it away when you no longer need it. >> > This way we can save the slots of OS harddisks to add more storage per >> node >> > and reduce overall costs as 1GB ram is cheaper then an OS disk and >> consumes >> > less power. >> > >> > If our management node is down, nothing will happen to the cluster. No >> > impact, no downtime. However, you do need the mgmt node to boot up the >> > cluster. So after a very rare total power outage, your first system >> would >> > be the mgmt node and then the cluster itself. But again, if you >> configure >> > your systems correct, no manual work is required to recover from that. >> For >> > everything else, it is possible (but definitely not needed) to deploy >> our >> > mgmt node in active/passive HA. >> > >> > We have multiple hundred installations worldwide in production >> > environments. Our strong PXE knowledge comes from more than 20 years of >> > datacenter hosting experience and it never ever failed us in the last >> >10 >> > years. >> > >> > The main benefits out of that: >> > - Immutable OS freshly booted: Every host has exactly the same version, >> > same library, kernel, Ceph versions,... >> > - OS is heavily tested by us: Every croit deployment has exactly the >> same >> > image. We can find errors much faster and hit much fewer errors. >> > - Easy Update: Updating OS, Ceph or anything else is just a node >> reboot. >> > No cluster downtime, No service Impact, full automatic handling by our >> mgmt >> > Software. >> > - No need to install OS: No maintenance costs, no labor required, no >> other >> > OS management required. >> > - Centralized Logs/Stats: As it is booted in memory, all logs and >> > statistics are collected on a central place for easy access. >> > - Easy to scale: It doesn't matter if you boot 3 oder 300 nodes, all >> > boot the exact same image in a few seconds. >> > .. lots more >> > >> > Please do not hesitate to contact us directly. We always try to offer an >> > excellent service and are strongly customer oriented. >> > >> > -- >> > Martin Verges >> > Managing director >> > >> > Mobile: +49 174 9335695 >> > E-Mail: martin.verges@xxxxxxxx >> > Chat: https://t.me/MartinVerges >> > >> > croit GmbH, Freseniusstr. 31h, 81247 Munich >> > CEO: Martin Verges - VAT-ID: DE310638492 >> > Com. register: Amtsgericht Munich HRB 231263 >> > >> > Web: https://croit.io >> > YouTube: https://goo.gl/PGE1Bx >> > >> > >> > Am Sa., 21. März 2020 um 13:53 Uhr schrieb huxiaoyu@xxxxxxxxxxxx < >> > huxiaoyu@xxxxxxxxxxxx>: >> > >> >> Hello， Martin， >> >> >> >> I notice that Croit advocate the use of ceph cluster without OS disks, >> but >> >> with PXE boot. >> >> >> >> Do you use a NFS server to serve the root file system for each node? >> such >> >> as hosting configuration files, user and password, log files, etc. My >> >> question is, will the NFS server be a single point of failure? If the >> NFS >> >> server goes down, the network experience any outage, ceph nodes may >> not be >> >> able to write to the local file systems, possibly leading to service >> outage. >> >> >> >> How do you deal with the above potential issues in production? I am a >> bit >> >> worried... >> >> >> >> best regards, >> >> >> >> samuel >> >> >> >> >> >> >> >> >> >> ------------------------------ >> >> huxiaoyu@xxxxxxxxxxxx >> >> >> >> >> >> >> > _______________________________________________ >> > ceph-users mailing list -- ceph-users@xxxxxxx >> > To unsubscribe send an email to ceph-users-leave@xxxxxxx >> >> > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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