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Check your ram. memtester

I boot a cluster from USB-Stick's. It's easy to dd the stick to another stick, so u always have a backup if something goes wrong with a kernel update. The sticks now 2 years old and still working flawless!

There is no transporter in proxmox? That is ridiculous! :-) Beam me up, Scotty!

We have the same problems over many months, the cluster lost a node or two while ceph was still working. I can't find any reason for that only my ip6 was not configured. So long time i search the net and somewhere i fond that statement. After i configure IPv6 on all my nodes the problem...

http://docs.ceph.com/docs/jewel/rbd/rbd-config-ref/ rbd cache Description: Enable caching for RADOS Block Device (RBD). Type: Boolean Required: No Default: true

So it's for maintenance only. For HA u need shared storage and it's usefull for maintenance also. Gluster exist. :-)

Hmm, how a local storage migration can start after the node is down? And who want to migrate "several hundred gigabyte KVM guests" over 1 Gigabit network? Sorry i don't get it.

Proxmox needs ipv6 also. Is it working?

:-( Maybe i should set the replicas to 5 on my cluster.... How can i check the filesystem now? Umount don't work and online is not possible.

OSD-Daemon crashed last week, so there was no id osd.22 running. It was stopped/out in Proxmox and ceph osd tree. And i dont find it in ps -ax | grep osd Now to late for ext4, 30 disc's with SSD journal, i dont want to change but next time i build one. Is 'service ceph stop osd.XX' the right...

https://wiki.debian.org/BridgeNetworkConnections The name br0 is up to you and can be anything you want. Now you need to add the interfaces that are going to be bridged. ?

Use the vRack and it will be your net! No change of gateway or something like that. google ovh vrack proxmox

Good morning guys! I want to check my filesystem after one osd crashed but i'm not able to unmount it! first i want to make sure the osd is stopped (is already stopped and out) service ceph stop osd.22 that's not working for me, all osd's on that node now stopped! so i start the other 5 osd's...

Post your /etc/network/interface

if u get this error u did wrong cabeling. it's a star wiring and not a ring! or your switch config is wrong! delete vmbr1 vmbr2 vmbr3 also. there are different types of bonding, why u need this at this time? KISS! http://www.linuxhorizon.ro/bonding.html reset the switch (no trunk), use only...

Thats why all software use this type of menu!? :-) Watch your video and u will see! (smart & disc) How many times u configure the network, dns and so on? for me i use it 1 time only and its done! so why i need this setting on the starting point of the screen forever now?

The old style hides all the non-essential options from daily workflow in the top menu bar. Now they always on the screen even u need it once a month or year! It should be done more like this: http://www.lwis.net/free-css-drop-down-menu/ultimate.horizontal.html Responsive design is the "new"...

Kein Problem! :-)

Don't see a bound interface! Disconnect 3 cables from switch!

This not gona work! https://forum.proxmox.com/threads/proxmox-4-cluster-setup-issue.23865/ READ it carefuly!