Hi,
We used a PXE boot with NFS server, but had some issues if NFS server crapped out and dropped connections or needed a reboot for maintenance. If I remember it correctly it sometimes took out some of the rebooted servers. So we switched to PXE with livecd based images. You basically create a livecd image, then boot it with specially prepared initramfs image and it uses a copy on write disk for basic storage. With mimic osd's are started automatically, just need to feed some basic settings for that server. On Fri, Aug 17, 2018 at 11:31 AM Florian Florensa <flor...@florensa.me> wrote: > > What about PXE booting the OSD's server ? I am considering doing these > sort of things as it doesn't seem that complicated. > A simple script could easily bring the osd back onine using some lvm > commands to bring the lvm back online and then some ceph-lvm activate > command to fire the osd's back up. > > > 2018-08-15 16:09 GMT+02:00 Götz Reinicke <goetz.reini...@filmakademie.de>: > > Hi, > > > >> Am 15.08.2018 um 15:11 schrieb Steven Vacaroaia <ste...@gmail.com>: > >> > >> Thank you all > >> > >> Since all concerns were about reliability I am assuming performance > >> impact of having OS running on SD card is minimal / negligible > > > > some time ago we had a some Cisco Blades booting VMware esxi from SD cards > > and hat no issue for month …till after an update the blade was rebooted and > > the SD failed …and then an other on an other server … From my POV at that > > time the „server" SDs where not close as reliable as SSDs or rotating > > disks. My experiences from some years ago. > > > >> > >> In other words, an OSD server is not writing/reading from Linux OS > >> partitions too much ( especially with logs at minimum ) > >> so its performance is not dependent on what type of disk OS resides on > > > > Regarding performance: What kind of SDs are supported? You can get some > > "SDXCTM | UHS-II | U3 | Class 10 | V90“ which can handle up to 260 > > MBytes/sec; like „Angelbird Matchpack EVA1“ ok they are Panasonic 4K Camera > > certified (and we use them currently to record 4K video) > > > > https://www.angelbird.com/prod/match-pack-for-panasonic-eva1-1836/ > > > > My2cents . Götz > > > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
