ghusson's latest activity
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ghusson replied to the thread Proxmox network configuration issue and best practise.My ideas : Reliability : use several firewalls/routers, with VRRP protocol for example in order to have Active/Passive firewalls. Security : use dedicated cluster servers with low level hardware in order to avoid lateral attackers moves. You are... -
ghusson replied to the thread Proxmox network configuration issue and best practise.Nodes shouldn't do any function other than virtualization ( and maybe CEPH storage ). Thus one or several VMs should do routing / firewalling. Be careful with your overlapping networks as it can be dangerous (security) and prone to mistakes in...
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ghusson replied to the thread NVME correctable errors?.@abhabitat : you didn't search in the forum, right ? https://forum.proxmox.com/threads/aer-correctable-error-message-received.156497/ ;)
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ghusson replied to the thread networks used to determine fencing.Did you install a 5th node for quorum in case of split ? Is 172.16.8.0/24 your management network ?
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ghusson replied to the thread Lost of quorom between each nodes - how to startup in standalone mode.Ok thank you for the info.
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ghusson replied to the thread Lost of quorom between each nodes - how to startup in standalone mode.WARNING : YOU CAN LOOSE DATA, thus backup what you have to before doing this (example : VMs and /etc on each nodes) In order to FORCE local node operations : pvecm expect 1 Then you will have to pay attention to what you are doing in /etc/pve as...
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ghusson replied to the thread networks used to determine fencing.Yes, and I think that your corosync cluster speak on the management traffic. That's why I said it was expected. In order to avoid this, you should add a second ring for corosync on the other switch network.
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ghusson replied to the thread Need clarification regarding split-brain.Hello. Just to be precise : in case of no quorum, and if HA is unconfigured, then no host is rebooted and no VM is shutdown. You would simply be unallowed to do any modification on state (configuration, VM stop/start and so on). But if HA is...
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ghusson replied to the thread tips on time synchronization and proxmox.Hello. You could try to install a SNTP client on each VM ?
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ghusson replied to the thread networks used to determine fencing.You can read this to understand : https://pve.proxmox.com/pve-docs/pve-admin-guide.html#ha_manager_fencing
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Also, are these VMs configured as HA and not limited only to this node via HA groups?
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ghusson replied to the thread networks used to determine fencing.Hello. Do you use HA ? If yes, the servers reboot was expected.
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ghusson replied to the thread Server Console Shell Password.Conclusion : do not log as root if you think it is inconsistent :-)
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ghusson replied to the thread Proxmox crashes/best practice for linux bridges.Indeed it should work. And sadly there is plenty of reasons that can make it crash :-)
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ghusson replied to the thread Critical Medium Error dev sda sector xxxx op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2.As I wrote : You should try a low level disk test.
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ghusson replied to the thread Proxmox crashes/best practice for linux bridges.Hello. The problem could be located to a kernel crash using bridges. But as seen many times in this forum with small form factor units, it rather comes from the processor. Can you try to : - re-enable bridges and reproduce the problem - put a fan...
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Adding to MarkusKos comment you might also want to read @UdoB great writeup on using Ceph in small custers: https://forum.proxmox.com/threads/fabu-can-i-use-ceph-in-a-_very_-small-cluster.159671/ Basically you will need fast network (10Gb/s...
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if you have the budget for that hardware, dont waste your time with hard disks, use ssd's. 25G nics (LACP bond) for ceph would be a good idea. storage/networking will be your main bottleneck here, especially with ceph. check the official ceph...
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ghusson replied to the thread HDD in mirrored Raid died, ZFS pool gone.Do you see information about your nas pool with : zfs get all ?
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ghusson replied to the thread Proxmox on SD card.It is rather a controversial question. For me : do not do that. Data and disk integrity will be involved in mid term. In order to avoid this, you will have to tune the installation and the swap and it will lead to a custom system to maintain. As...
