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ansemjo/container-systemd-autologin.conf

Created April 26, 2019 10:53
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enable root autologin when starting a container with systemd init
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container-systemd-autologin.conf
# drop-in override to fix and enable autologin in rootless containers with systemd init
# e.g.:
#
# podman run --rm -it \
# -v .../container-systemd-autologin.conf:/etc/systemd/system/console-getty.service.d/override.conf:ro \
# centos:latest /usr/lib/systemd/systemd
[Service]
ExecStart=
ExecStartPre=-/usr/bin/sed -i '/pam_loginuid.so/d' /etc/pam.d/login
ExecStart=-/sbin/agetty --autologin root --noclear --keep-baud console 115200 38400 9600 vt
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ansemjo commented Apr 26, 2019

Example logging of launching a container with systemd as init:

$ podman run --rm -it -v /tmp/autologin.conf:/etc/systemd/system/console-getty.service.d/override.conf:ro centos /usr/lib/systemd/systemd
systemd 219 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 -SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
Detected virtualization other.
Detected architecture x86-64.

Welcome to CentOS Linux 7 (Core)!

Set hostname to <c78c83d3f3d0>.
Initializing machine ID from random generator.
Failed to read AF_UNIX datagram queue length, ignoring: No such file or directory
Failed to install release agent, ignoring: Permission denied
[  OK  ] Reached target Local Encrypted Volumes.
[  OK  ] Reached target Swap.
[  OK  ] Reached target Remote File Systems.
[  OK  ] Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Created slice Root Slice.
[  OK  ] Listening on Delayed Shutdown Socket.
[  OK  ] Created slice User and Session Slice.
[  OK  ] Listening on /dev/initctl Compatibility Named Pipe.
[  OK  ] Listening on Journal Socket.
[  OK  ] Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Created slice System Slice.
[  OK  ] Reached target Slices.
[  OK  ] Created slice system-getty.slice.
         Mounting FUSE Control File System...
         Starting Journal Service...
[  OK  ] Reached target Local File Systems (Pre).
         Starting Rebuild Hardware Database...
[  OK  ] Reached target Local File Systems.
         Starting Rebuild Journal Catalog...
         Starting Load/Save Random Seed...
[  OK  ] Reached target Paths.
[  OK  ] Started Rebuild Hardware Database.
[  OK  ] Started Load/Save Random Seed.
sys-fs-fuse-connections.mount mount process exited, code=exited status=32
[FAILED] Failed to mount FUSE Control File System.
See 'systemctl status sys-fs-fuse-connections.mount' for details.
Unit sys-fs-fuse-connections.mount entered failed state.
[  OK  ] Started Journal Service.
         Starting Flush Journal to Persistent Storage...
[  OK  ] Started Rebuild Journal Catalog.
         Starting Update is Completed...
[  OK  ] Started Update is Completed.
[  OK  ] Started Flush Journal to Persistent Storage.
         Starting Create Volatile Files and Directories...
[  OK  ] Started Create Volatile Files and Directories.
         Starting Update UTMP about System Boot/Shutdown...
[  OK  ] Started Update UTMP about System Boot/Shutdown.
[  OK  ] Reached target System Initialization.
[  OK  ] Listening on D-Bus System Message Bus Socket.
[  OK  ] Reached target Sockets.
[  OK  ] Reached target Basic System.
[  OK  ] Started D-Bus System Message Bus.
         Starting Login Service...
         Starting Permit User Sessions...
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timers.
         Starting Cleanup of Temporary Directories...
[  OK  ] Started Permit User Sessions.
[  OK  ] Started Console Getty.
[  OK  ] Reached target Login Prompts.
[  OK  ] Started Cleanup of Temporary Directories.
[  OK  ] Started Login Service.
[  OK  ] Reached target Multi-User System.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.

CentOS Linux 7 (Core)
Kernel 5.0.9-arch1-1-ARCH on an x86_64

c78c83d3f3d0 login: root (automatic login)

[root@c78c83d3f3d0 ~]# systemctl status
● c78c83d3f3d0
    State: degraded
     Jobs: 0 queued
   Failed: 1 units
    Since: Fri 2019-04-26 10:54:10 UTC; 7s ago
   CGroup: /user.slice/user-1000.slice/user@1000.service/gnome-terminal-server.service/c78c83d3f3d021119b09e27fab9c9cea0c91890ed0adeb9d6c2ddfc3d1fc0e87
           ├─1 /usr/lib/systemd/systemd
           ├─user.slice
           │ └─user-0.slice
           │   └─session-2.scope
           │     ├─32 login -- root     
           │     ├─33 -bash
           │     ├─45 systemctl status
           │     └─46 more
           └─system.slice
             ├─systemd-journald.service
             │ └─18 /usr/lib/systemd/systemd-journald
             ├─dbus.service
             │ └─26 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
             └─systemd-logind.service
               └─27 /usr/lib/systemd/systemd-logind
[root@c78c83d3f3d0 ~]# shutdown now
[  OK  ] Stopped target Timers.
[  OK  ] Stopped Daily Cleanup of Temporary Directories.
         Stopping Session 2 of user root.
         Unmounting /var/log/journal...
[  OK  ] Removed slice system-getty.slice.
[  OK  ] Stopped target Multi-User System.
         Stopping D-Bus System Message Bus...
[  OK  ] Stopped target Login Prompts.
         Stopping Console Getty...
[FAILED] Failed unmounting /var/log/journal.
[  OK  ] Stopped Console Getty.
[  OK  ] Stopped Session 2 of user root.
[  OK  ] Removed slice User Slice of root.
         Stopping Login Service...
         Stopping Permit User Sessions...
[  OK  ] Stopped Login Service.
[  OK  ] Stopped Permit User Sessions.
[  OK  ] Stopped target Remote File Systems.
[  OK  ] Stopped D-Bus System Message Bus.
[  OK  ] Stopped target Basic System.
[  OK  ] Stopped target Sockets.
[  OK  ] Stopped target Slices.
[  OK  ] Removed slice User and Session Slice.
[  OK  ] Stopped target Paths.
[  OK  ] Stopped Dispatch Password Requests to Console Directory Watch.
[  OK  ] Stopped Forward Password Requests to Wall Directory Watch.
[  OK  ] Closed D-Bus System Message Bus Socket.
[  OK  ] Stopped target System Initialization.
[  OK  ] Stopped target Local Encrypted Volumes.
         Stopping Update UTMP about System Boot/Shutdown...
[  OK  ] Stopped Update is Completed.
[  OK  ] Stopped Rebuild Journal Catalog.
         Stopping Load/Save Random Seed...
[  OK  ] Stopped Rebuild Hardware Database.
[  OK  ] Stopped Update UTMP about System Boot/Shutdown.
[  OK  ] Stopped Load/Save Random Seed.
[  OK  ] Stopped Create Volatile Files and Directories.
[  OK  ] Reached target Shutdown.
Syncing filesystems and block devices.
Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
Powering off.
Exiting container.

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