[UC20][NETPLAN] "renderer" option is not working in netplan configuration of gadget.yamal

[ChunAnWu]

We add a simple netplan configuration to gadget.yaml and everything work fine until we add "renderer"
option.

[Michael Vogt (mvo)]

Could you please attach the failing gadget.yaml?

[Michael Vogt (mvo)]

Could you please paste also the exact error message here.

[ChunAnWu (kiya956)]

Hi Michael
    I have uploaded the gadget.yaml

BR
    An

[ChunAnWu (kiya956)]

Hi Michael
the log I saw
'''
Jul 13 06:52:31 ubuntu systemd[1]: Starting Snap Daemon...
Jul 13 06:52:33 ubuntu snapd[1681]: overlord.go:272: Acquiring state lock file
Jul 13 06:52:33 ubuntu snapd[1681]: overlord.go:277: Acquired state lock file
Jul 13 06:52:34 ubuntu snapd[1681]: patch.go:64: Patching system state level 6 to sublevel 1...
Jul 13 06:52:34 ubuntu snapd[1681]: patch.go:64: Patching system state level 6 to sublevel 2...
Jul 13 06:52:34 ubuntu snapd[1681]: patch.go:64: Patching system state level 6 to sublevel 3...
Jul 13 06:52:34 ubuntu snapd[1681]: daemon.go:247: started snapd/2.59.5 (series 16) ubuntu-core/20 (arm64) linux/5.4.0-1039-shiner.
Jul 13 06:52:34 ubuntu snapd[1681]: daemon.go:340: adjusting startup timeout by 35s (pessimistic estimate of 30s plus 5s per snap)
Jul 13 06:52:34 ubuntu snapd[1681]: backends.go:58: AppArmor status: apparmor is enabled and all features are available
Jul 13 06:52:34 ubuntu snapd[1681]: devicemgr.go:338: save already mounted under /var/lib/snapd/save
Jul 13 06:52:34 ubuntu systemd[1]: Started Snap Daemon.
Jul 13 06:54:00 ubuntu snapd[1681]: context.go:318: ERROR task 1 (Run configure hook of "core" snap if present): ignoring failure in hook "configure": cannot try netplan config: no specific reason returned from netplan and cannot cancel netplan config: Unknown object '/io/netplan/Netplan/config/UX6V71'.
Jul 13 06:55:47 ubuntu snapd[1681]: stateengine.go:149: state ensure error: persistent network error: Get https://api.snapcraft.io/api/v1/snaps/sections: dial tcp: lookup api.snapcraft.io: Temporary failure in name resolution
Jul 13 06:56:07 ubuntu snapd[1681]: devicemgr.go:1190: System initialized, cloud-init reported to be done, disabled permanently
Jul 13 07:32:42 ubuntu snapd[1681]: storehelpers.go:769: cannot refresh: snap has no updates available: "core20", "hbt-imx-kernel", "hon-pdk-x8med-gadget", "modem-manager", "network-manager", "snapd"
'''

[Alfonso Sanchez-Beato (alfonsosanchezbeato)]

The problem is probably https://bugs.launchpad.net/netplan/+bug/2027583 - the netplan try that snapd does is returning an error when NM is installed.

[Alfonso Sanchez-Beato (alfonsosanchezbeato)]

I have reproduced this and actually it looks more like https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/1959570 - I saw the nmcli related crash in the journal along with the snapd error. To reproduce, I ran:

$ sudo snap set system system.network.netplan='{"network":{"version":2,"renderer":"NetworkManager"}}'

The problem is fixed in 0.106. but it has not been backported to jammy yet.