kola/kubeadm/tmpl: forward docker logs to journald

[tormath1]

this can help debugging failing tests.
See also: https://docs.docker.com/config/containers/logging/journald/

Signed-off-by: Mathieu Tortuyaux mtortuyaux@microsoft.com

For ARM64, tests are failing and only indications we have are from kubelet:

Sep  7 09:22:43.120921 kubelet[1354]: E0907 09:22:43.120852    1354 pod_workers.go:747] "Error syncing pod, skipping" err="failed to \"StartContainer\" for \"ebpf-mount\" with CrashLoopBackOff: \"back-off 1m20s restarting failed container=ebpf-mount pod=cilium-g84j6_kube-system(aa57d085-b710-4447-b704-550e59266eee)\"" pod="kube-system/cilium-g84j6" podUID=aa57d085-b710-4447-b704-550e59266eee

How to use

• run a kubeadm.* test
• check logs into _kola_temp/.../journal.txt:

Sep  7 15:41:10.780613 kernel: IPVS: [rr] scheduler registered.
Sep  7 15:41:10.786475 kernel: IPVS: [wrr] scheduler registered.
Sep  7 15:41:10.793491 kernel: IPVS: [sh] scheduler registered.
Sep  7 15:41:10.822230 6d438354cb89[1103]: I0907 13:41:10.821885       1 node.go:172] Successfully retrieved node IP: 10.0.0.3
Sep  7 15:41:10.822776 6d438354cb89[1103]: I0907 13:41:10.821982       1 server_others.go:140] Detected node IP 10.0.0.3
Sep  7 15:41:10.822930 6d438354cb89[1103]: W0907 13:41:10.822038       1 server_others.go:598] Unknown proxy mode "", assuming iptables proxy
Sep  7 15:41:10.876805 6d438354cb89[1103]: I0907 13:41:10.876354       1 server_others.go:206] kube-proxy running in dual-stack mode, IPv4-primary
Sep  7 15:41:10.878064 6d438354cb89[1103]: I0907 13:41:10.876530       1 server_others.go:212] Using iptables Proxier.
Sep  7 15:41:10.878299 6d438354cb89[1103]: I0907 13:41:10.876593       1 server_others.go:219] creating dualStackProxier for iptables.
...

docker containers logs are now redirected to journald.

[pothos]

I think inline: | should work, too.
Another alternative is data:,… with URL encoding.
The base64 encoding is not readable for humans^^

[tormath1]

Yeah I wanted to avoid URL encoding - let's give a try to inline: |.

[pothos]

Suggested change

	remote:
	url: data:text/plain;base64,eyJsb2ctZHJpdmVyIjogImpvdXJuYWxkIn0K`
	inline: |
	{"log-driver": "journald"}

[tormath1]

@pothos comment has been addressed - too bad it's not today we'll start to write config fully in base64