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    /proc read-only in lxc when trying to set /proc/sys/vm/overcommit_memory

    I want to disable memory overcommit on an lxc container (this runs multiple greedy cron jobs which will grab a lot of memory and use it all) however when I try to set this on the command line, the lxc host tells me that /proc is a read-only filesystem. There are several other containers runing...
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    Container loses domain from hostname at (re) boot

    My Ubuntu 20.04LTS containers are losing the domain part from the hostname when the container is (re) started. The impacted system (currently a 2-node cluster, 3rd node to be added) is running Proxmox 6.1-7 and was provisioned a few days ago. This has several Ubuntu 20.04LTS containers and VMs...
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    Simulate node failure

    I'm setting up a cluster and finding the documentation on shared storage sparse and lacking depth. Where people have managed to set something up, they seem to think having the files (eventually consistent) in more than one location means the job is done. So I can have some assurance about...
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    Design - Replication and backups

    I am setting up a tiny cluster - I only need more than one machine to provide fault tolerance (will be using 3 for quorum / simpler upgrade and maintenance cycles). Given that I have 3 physical hosts which is very redundant, I'm not planning on mutliple PSU's/NICs/RAID. To provide resillience...
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    Convert raw to qcow2

    I have several virtual disks (connected to conainers and VMs) in raw format and I want to convert them to qcow2 (I was still learning when I made them!). Google took me to https://forum.proxmox.com/threads/migrating-from-raw-lvm-to-qcow2.19960/ where someone suggested using the web front end as...
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    Communications failure (in some directions?) in web console - Fixed

    I have a 4 node cluster (planning to go to an odd number soon). From the web console on node 1, I can see the status of all nodes/run a shell on all nodes, but on node 2, 3, 4 I cannot connect to node 1: Connection Timed Out (595) / Communication Failure(0) There does not appear to be any...
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    Does proxmox cluster care about IP addresses? Should I?

    I am about to build a proxmox cluster, initially with 3 nodes, which will use shared NFS storage. The storage will be on a dedicated network, while each node will also have a connection to a LAN shared with other devices. I am expecting that the storage network will have more available...
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