常见问题

常见问题

1. proxmox删除历史旧节点

   root@proxmox:~# cd /etc/pve/nodes
   root@proxmox:/etc/pve/nodes# ls
   dell  proxmox
   root@proxmox:/etc/pve/nodes# pvecm  delnode dell
   Could not kill node (error = CS_ERR_NOT_EXIST)
   Killing node 2
   root@proxmox:/etc/pve/nodes# ls
   proxmox

2. 无法擦除硬盘

time dd if=/dev/zero of=/dev/sdb

wipefs -force /dev/sdb 

udevadm settle

reboot

3.删除ceph文件清除

rm -rf /etc/systemd/system/ceph*
killall -9 ceph-mon ceph-mgr ceph-mds
rm -rf /var/lib/ceph/mon/  /var/lib/ceph/mgr/  /var/lib/ceph/mds/
pveceph purge
apt -y purge ceph-mon ceph-osd ceph-mgr ceph-mds
rm /etc/init.d/ceph
for i in $(apt search ceph | grep installed | awk -F/ '{print $1}'); do apt reinstall $i; done
dpkg-reconfigure ceph-base
dpkg-reconfigure ceph-mds
dpkg-reconfigure ceph-common
dpkg-reconfigure ceph-fuse
for i in $(apt search ceph | grep installed | awk -F/ '{print $1}'); do apt reinstall $i; done

4. 判断是否支持巨型帧 MTU900
   ping -M do -s 8000 ip
5. TASK ERROR: VM is locked (backup)

   qm unlock <vmid>

6. check which core each CPU is assigned
   cat /proc/cpuinfo | grep "process\|core id"
7. look at the cpu affinity mask as displayed by taskset
   taskset -p <pid of your VM>