The seccomp tools are dynamically linked:
$ file /usr/lib/snapd/snap-seccomp /snap/core/current/usr/lib/snapd/snap-seccomp /usr/lib/snapd/snap-seccomp: ELF 64-bit MSB executable, IBM S/390, version 1 (SYSV), dynamically linked, interpreter /lib/ld64.so.1, BuildID[sha1]=ac22cf91f26d3e3f32132a8f717a22af7caf49fc, for GNU/Linux 3.2.0, stripped /snap/core/current/usr/lib/snapd/snap-seccomp: ELF 64-bit MSB executable, IBM S/390, version 1 (SYSV), dynamically linked, interpreter /lib/ld64.so.1, for GNU/Linux 3.2.0, Go BuildID=wD-y12JBR_fQqHU08D57/n6hBHyUsBFuJ5Czn6fF7/JXIu77JtC7eIGO4BPOpW/1cKteqVwlvsiXC73WA1t, BuildID[sha1]=ed5cbba6dba5be3b12f065fca9981725da2c75cc, stripped
As for updates, there were apt updates, followed by reloads (probably the configure step). That eventually restarted the snap daemon it seems.
Apr 15 08:43:50 s1lp05 systemd[1]: Stopped Daily apt download activities. Apr 15 08:43:50 s1lp05 systemd[1]: Stopping Daily apt download activities. Apr 15 08:43:50 s1lp05 systemd[1]: Started Daily apt download activities. Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:52 s1lp05 systemd[1]: Reloading. Apr 15 08:43:52 s1lp05 systemd[1]: /lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/> Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration Apr 15 08:43:57 s1lp05 systemd[1]: Stopping Snap Daemon... Apr 15 08:43:57 s1lp05 snapd[2423936]: main.go:155: Exiting on terminated signal. Apr 15 08:43:57 s1lp05 systemd[1]: snapd.service: Succeeded. Apr 15 08:43:57 s1lp05 systemd[1]: Stopped Snap Daemon. Apr 15 08:43:57 s1lp05 systemd[1]: snapd.socket: Succeeded. Apr 15 08:43:57 s1lp05 systemd[1]: Closed Socket activation for snappy daemon.
That was per /var/log/dpkg.log 2020-04-15 08:43:57 upgrade snapd:s390x 2.44+20.04 2.44.3+20.04
Core was refreshed on 1st of April I think: ubuntu@s1lp05:~$ snap info core ... refresh-date: 20 days ago, at 18:14 EDT channels: latest/stable: 16-2.44.1 2020-03-31 (8932) 89MB - latest/candidate: 16-2.44.3 2020-04-14 (9064) 89MB - latest/beta: 16-2.44.3 2020-04-10 (9064) 89MB - latest/edge: 16-2.44.3+git1757.66c7369 2020-04-20 (9125) 92MB - installed: 16-2.44.1 (8932) 89MB core ubuntu@s1lp05:~$ date Mon Apr 20 10:36:24 EDT 2020
TL;DR: - snapd restart 24 march - core update 1st of April - snapd upgrade and restart 15 April => here the key got regenerated
The seccomp tools are dynamically linked:
$ file /usr/lib/ snapd/snap- seccomp /snap/core/ current/ usr/lib/ snapd/snap- seccomp snapd/snap- seccomp: ELF 64-bit MSB executable, IBM S/390, version 1 (SYSV), dynamically linked, interpreter /lib/ld64.so.1, BuildID[ sha1]=ac22cf91f 26d3e3f32132a8f 717a22af7caf49f c, for GNU/Linux 3.2.0, stripped current/ usr/lib/ snapd/snap- seccomp: ELF 64-bit MSB executable, IBM S/390, version 1 (SYSV), dynamically linked, interpreter /lib/ld64.so.1, for GNU/Linux 3.2.0, Go BuildID= wD-y12JBR_ fQqHU08D57/ n6hBHyUsBFuJ5Cz n6fF7/JXIu77JtC 7eIGO4BPOpW/ 1cKteqVwlvsiXC7 3WA1t, BuildID[ sha1]=ed5cbba6d ba5be3b12f065fc a9981725da2c75c c, stripped
/usr/lib/
/snap/core/
As for updates, there were apt updates, followed by reloads (probably the configure step).
That eventually restarted the snap daemon it seems.
Apr 15 08:43:50 s1lp05 systemd[1]: Stopped Daily apt download activities. system/ dbus.socket: 5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/ dbus/system_ bus_socket → /run/dbus/>
Apr 15 08:43:50 s1lp05 systemd[1]: Stopping Daily apt download activities.
Apr 15 08:43:50 s1lp05 systemd[1]: Started Daily apt download activities.
Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:52 s1lp05 systemd[1]: Reloading.
Apr 15 08:43:52 s1lp05 systemd[1]: /lib/systemd/
Apr 15 08:43:52 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:53 s1lp05 dbus-daemon[3425]: [system] Reloaded configuration
Apr 15 08:43:57 s1lp05 systemd[1]: Stopping Snap Daemon...
Apr 15 08:43:57 s1lp05 snapd[2423936]: main.go:155: Exiting on terminated signal.
Apr 15 08:43:57 s1lp05 systemd[1]: snapd.service: Succeeded.
Apr 15 08:43:57 s1lp05 systemd[1]: Stopped Snap Daemon.
Apr 15 08:43:57 s1lp05 systemd[1]: snapd.socket: Succeeded.
Apr 15 08:43:57 s1lp05 systemd[1]: Closed Socket activation for snappy daemon.
That was per /var/log/dpkg.log
2020-04-15 08:43:57 upgrade snapd:s390x 2.44+20.04 2.44.3+20.04
Core was refreshed on 1st of April I think: 3+git1757. 66c7369 2020-04-20 (9125) 92MB -
ubuntu@s1lp05:~$ snap info core
...
refresh-date: 20 days ago, at 18:14 EDT
channels:
latest/stable: 16-2.44.1 2020-03-31 (8932) 89MB -
latest/candidate: 16-2.44.3 2020-04-14 (9064) 89MB -
latest/beta: 16-2.44.3 2020-04-10 (9064) 89MB -
latest/edge: 16-2.44.
installed: 16-2.44.1 (8932) 89MB core
ubuntu@s1lp05:~$ date
Mon Apr 20 10:36:24 EDT 2020
TL;DR:
- snapd restart 24 march
- core update 1st of April
- snapd upgrade and restart 15 April
=> here the key got regenerated