Container Unable to Start

[Sakamoto]

Hi Guys, I need some help here. My container is unable to start after I turn on my cluster. This is what I get when I try to turn it on.



I have tried to reboot the cluster and restore the backup but still get the same error, Any idea?

 

[fba]

Hi,

I do not see a clear indication, what caused the error. Try starting the container with pct start 108 --debug to get more log output.
If you would like to describe the environment a bit more, this might help too.

 

[Sakamoto]

Here it is

root@prmx:~# pct start 108 --debug
run_buffer: 571 Script exited with status 11
lxc_init: 845 Failed to run lxc.hook.pre-start for container "108"
__lxc_start: 2034 Failed to initialize container "108"
0 hostid 100000 range 65536
INFO     lsm - ../src/lxc/lsm/lsm.c:lsm_init_static:38 - Initialized LSM security driver AppArmor
INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxc/hooks/lxc-pve-prestart-hook" for container "108", config section "lxc"
DEBUG    utils - ../src/lxc/utils.c:run_buffer:560 - Script exec /usr/share/lxc/hooks/lxc-pve-prestart-hook 108 lxc pre-start produced output: org.freedesktop.DBus.Error.ServiceUnknown: The name uk.org.thekelleys.dnsmasq.Internal was not provided by any .service files

ERROR    utils - ../src/lxc/utils.c:run_buffer:571 - Script exited with status 11
ERROR    start - ../src/lxc/start.c:lxc_init:845 - Failed to run lxc.hook.pre-start for container "108"
ERROR    start - ../src/lxc/start.c:__lxc_start:2034 - Failed to initialize container "108"
INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxcfs/lxc.reboot.hook" for container "108", config section "lxc"
startup for container '108' failed

Our office had a power outage last weekend. Then we bulk shut down the VM and shut down the host. after I turned on the server back, the container could not turn on but VM could be turned on as usual.

My server has 2 cluster nodes and both clusters use separate storage.

 

[fba]

Are you using SDN from Proxmox? It seems like there is an issue with the dnsmasq config/unit. Check configuration files and if service is running, details of both can be found in the wiki: https://pve.proxmox.com/wiki/Software-Defined_Network#pvesdn_config_dhcp

 

[Sakamoto]

Yes, and it looks like no changes.

root@prmx:/etc/pve/sdn# cat subnets.cfg
subnet: Internal-192.168.201.0-24
        vnet Internal
        dhcp-range start-address=192.168.201.2,end-address=192.168.201.250
        gateway 192.168.201.1
        snat 1

root@prmx:/etc/pve/sdn# cat vnets.cfg
vnet: Internal
        zone Internal

root@prmx:/etc/pve# ps guax | grep dnsmasq

dnsmasq     1508  0.0  0.0  14184  1948 ?        S    Feb24   0:00 /usr/sbin/dnsmasq -x /run/dnsmasq/dnsmasq.pid -u dnsmasq -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new --local-service --trust-anchor=.,20326,8,2,e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d

root      692923  0.0  0.0   6332  1920 pts/0    S+   10:16   0:00 grep dnsmasq

root@prmx:/etc/pve# systemctl status dnsmasq

● dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server

     Loaded: loaded (/lib/systemd/system/dnsmasq.service; enabled; preset: enabled)

     Active: active (running) since Mon 2025-02-24 07:31:02 +08; 1 day 2h ago

   Main PID: 1508 (dnsmasq)

      Tasks: 1 (limit: 62455)

     Memory: 1.6M

        CPU: 46ms

     CGroup: /system.slice/dnsmasq.service

             └─1508 /usr/sbin/dnsmasq -x /run/dnsmasq/dnsmasq.pid -u dnsmasq -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new --local-service --trust-anchor=>



Feb 24 07:31:02 my1prmx systemd[1]: Starting dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server...

Feb 24 07:31:02 my1prmx dnsmasq[1508]: started, version 2.90 cachesize 150

Feb 24 07:31:02 my1prmx dnsmasq[1508]: DNS service limited to local subnets

Feb 24 07:31:02 my1prmx dnsmasq[1508]: compile time options: IPv6 GNU-getopt DBus no-UBus i18n IDN2 DHCP DHCPv6 no-Lua TFTP conntrack ipset nftset auth crypt>

Feb 24 07:31:02 my1prmx dnsmasq[1508]: reading /etc/resolv.conf

Feb 24 07:31:02 my1prmx dnsmasq[1508]: using nameserver 10.31.22.102#53

Feb 24 07:31:02 my1prmx dnsmasq[1508]: using nameserver 10.31.16.169#53

Feb 24 07:31:02 my1prmx dnsmasq[1508]: read /etc/hosts - 11 names

Feb 24 07:31:02 my1prmx systemd[1]: Started dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server.

These are the details that you asked. I can see its mentioned that the lxc failed, but I'm not really sure how can I troubleshoot it.

Sorry, I'm new with linux and proxmox so I'm not really good with these things.