[systemd-devel] Starting a container with machinectl vs nspawn
Yassine Chaouche
a.chaouche at algerian-radio.dz
Tue Feb 18 13:46:24 UTC 2025
Le 2/18/25 à 14:07, Kevin P. Fleming a écrit :
> On Tue, Feb 18, 2025, at 07:32, Yassine Chaouche wrote:
>> I tried systemctl on the host
>>
>>
>> root at messagerie-recup[10.10.10.20] ~ # systemctl status -M clone-messagerie
>> Failed to read server status: Transport endpoint is not connected
>> root at messagerie-recup[10.10.10.20] ~ #
>
> It is very likely that the machine-management tools in systemd 252 are unable to communicate with systemd 215 inside the container. You will probably need to treat that container as if it did not have systemd running inside it.
When I stop the machine,
then restart it with nspawn this time
(instead of machinectl start)
then systemctl -M on the host works just fine:
root at messagerie-recup[10.10.10.20] ~ # systemctl -M clone-messagerie --no-pager
UNIT LOAD ACTIVE SUB DESCRIPTION
-.mount loaded active mounted /
● dev-hugepages.mount loaded failed failed Huge Pages File System
dev-mqueue.mount loaded active mounted POSIX Message Queue File System
proc-acpi.mount loaded active mounted /proc/acpi
proc-bus.mount loaded active mounted /proc/bus
proc-fs.mount loaded active mounted /proc/fs
proc-irq.mount loaded active mounted /proc/irq
proc-sys-kernel-random-boot_id.mount loaded active mounted /proc/sys/kernel/random/boot_id
run-host-incoming.mount loaded active mounted /run/host/incoming
run-host-os\x2drelease.mount loaded active mounted /run/host/os-release
run-host.mount loaded active mounted /run/host
● sys-fs-fuse-connections.mount loaded failed failed FUSE Control File System
tmp.mount loaded active mounted Temporary Directory
acpid.path loaded active running ACPI Events Check
systemd-ask-password-console.path loaded active waiting Dispatch Password Requests to Console Directory Watch
systemd-ask-password-wall.path loaded active waiting Forward Password Requests to Wall Directory Watch
acpid.service loaded active running ACPI event daemon
amavis-mc.service loaded active exited LSB: Startup script for amavis master supervisor
● amavis.service loaded failed failed LSB: Starts amavisd-new mailfilter
amavisd-snmp-subagent.service loaded active exited LSB: Startup script for amavis snmp subagent
● atd.service loaded failed failed Deferred execution scheduler
● clamav-daemon.service loaded failed failed Clam AntiVirus userspace daemon
● clamav-freshclam.service loaded failed failed ClamAV virus database updater
console-getty.service loaded active running Console Getty
console-setup.service loaded active exited LSB: Set console font and keymap
cron.service loaded active running Regular background program processing daemon
dbus.service loaded active running D-Bus System Message Bus
● dovecot.service loaded failed failed Dovecot IMAP/POP3 email server
exim4.service loaded active exited LSB: exim Mail Transport Agent
fail2ban.service loaded active running LSB: Start/stop fail2ban
fusioninventory-agent.service loaded active exited LSB: starts FusionInventory Agent
glances.service loaded active exited LSB: Starts and daemonize Glances server
hddtemp.service loaded active exited LSB: disk temperature monitoring daemon
hdparm.service loaded active exited LSB: Tune IDE hard disks
irqbalance.service loaded active running LSB: daemon to balance interrupts for SMP systems
kbd.service loaded active exited LSB: Prepare console
keyboard-setup.service loaded active exited LSB: Set preliminary keymap
lm-sensors.service loaded active exited Initialize hardware monitoring sensors
● mysql.service loaded failed failed LSB: Start and stop the mysql database server daemon
networking.service loaded active exited LSB: Raise network interfaces.
nfs-common.service loaded active exited LSB: NFS support files common to client and server
ntp.service loaded active exited LSB: Start NTP daemon
opendkim.service loaded active exited LSB: Start the OpenDKIM service
postfix.service loaded active exited LSB: Postfix Mail Transport Agent
rc-local.service loaded active exited /etc/rc.local Compatibility
rpcbind.service loaded active exited LSB: RPC portmapper replacement
rsyslog.service loaded active running System Logging Service
● shorewall.service loaded failed failed LSB: Configure the firewall at boot time
● smartd.service loaded failed failed Self Monitoring and Reporting Technology (SMART) Daemon
ssh.service loaded active running OpenBSD Secure Shell server
systemd-journald.service loaded active running Journal Service
systemd-logind.service loaded active running Login Service
systemd-random-seed.service loaded active exited Load/Save Random Seed
● systemd-remount-fs.service loaded failed failed Remount Root and Kernel File Systems
systemd-tmpfiles-setup.service loaded active exited Create Volatile Files and Directories
systemd-update-utmp.service loaded active exited Update UTMP about System Boot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
udev-finish.service loaded active exited Copy rules generated while the root was ro
-.slice loaded active active Root Slice
system-container\x2dgetty.slice loaded active active system-container\x2dgetty.slice
system-getty.slice loaded active active system-getty.slice
system.slice loaded active active System Slice
user.slice loaded active active User and Session Slice
acpid.socket loaded active running ACPID Listen Socket
clamav-daemon.socket loaded active listening Socket for Clam AntiVirus userspace daemon
dbus.socket loaded active running D-Bus System Message Bus Socket
● dovecot.socket loaded failed failed Dovecot IMAP/POP3 email server activation socket
syslog.socket loaded active running Syslog Socket
systemd-initctl.socket loaded active listening /dev/initctl Compatibility Named Pipe
systemd-journald-dev-log.socket loaded active running Journal Socket (/dev/log)
systemd-journald.socket loaded active running Journal Socket
systemd-shutdownd.socket loaded active listening Delayed Shutdown Socket
dev-sda5.swap loaded active active /dev/sda5
basic.target loaded active active Basic System
cryptsetup.target loaded active active Encrypted Volumes
getty.target loaded active active Login Prompts
graphical.target loaded active active Graphical Interface
local-fs-pre.target loaded active active Local File Systems (Pre)
local-fs.target loaded active active Local File Systems
mail-transport-agent.target loaded active active Mail Transport Agent
multi-user.target loaded active active Multi-User System
network-online.target loaded active active Network is Online
network.target loaded active active Network
paths.target loaded active active Paths
remote-fs-pre.target loaded active active Remote File Systems (Pre)
remote-fs.target loaded active active Remote File Systems
rpcbind.target loaded active active RPC Port Mapper
slices.target loaded active active Slices
sockets.target loaded active active Sockets
swap.target loaded active active Swap
sysinit.target loaded active active System Initialization
timers.target loaded active active Timers
systemd-tmpfiles-clean.timer loaded active waiting Daily Cleanup of Temporary Directories
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
93 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
root at messagerie-recup[10.10.10.20] ~ #
Best,
--
yassine -- sysadm
http://about.me/ychaouche
Looking for side gigs.
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