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When I install docker and try to run it, sudo systemctl start docker, it says it can't run as the title says.(Not WSL)

So when I run it with the sudo service docker start command, it turns off again after a second

Furthermore, sudo dockerd says that the modules bridge, br_netfilter, and ip_tables are installed but missing. iptables --wait -L -n command also gives an error...

The Docker daemon failed to initialize the network controller, which seems to be related to the missing modules and iptables configuration issues mentioned earlier

my linux release is

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
distrib_release=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.6 LTS"
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  • Hmm... so what is your init system? Perhaps cat /proc/1/cmdline or xargs -0a /proc/1/cmdline would be helpful
    – steeldriver
    Commented Feb 28 at 2:55
  • I'm not sure if I typed the commands correctly, but they both output /bin/bash
    – pepperonipizza97
    Commented Feb 28 at 4:02
  • So that suggests your system was booted via something like init=/bin/bash from the grub recovery menu?
    – steeldriver
    Commented Feb 28 at 12:45
  • PID 1 process seems to run /bin/bash instead of systemd or init
    – pepperonipizza97
    Commented Feb 29 at 0:54
  • Yeah I can see that - I'm just wondering how that's possible. Is /sbin/init actually a symlink to /bin/bash, or is the normal init being overridden via grub?
    – steeldriver
    Commented Feb 29 at 1:15

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