Weave-scope CrashLoopBackOff - standard_init_linux.go:190 on armv7

[fulvi0]

What you expected to happen?

works fine

What happened?

The pod for weave-scope throws an error and the container keeps the status as CrashLoopBackOff

standard_init_linux.go:190: exec user process caused "exec format error"

How to reproduce it?

Just install Weave Scope on your Kubernetes cluster Pi

Anything else we need to know?

Every 2.0s: kubectl get pods --namespace=kube-system                srvlpi01: Sun Jul 22 00:40:29 2018

NAME                                   READY     STATUS    RESTARTS   AGE
coredns-78fcdf6894-864mw               1/1       Running   0          1h
coredns-78fcdf6894-v5wqm               1/1       Running   0          1h
etcd-srvlpi01                          1/1       Running   0          1h
kube-apiserver-srvlpi01                1/1       Running   0          1h
kube-controller-manager-srvlpi01       1/1       Running   0          1h
kube-proxy-4k5hj                       1/1       Running   0          1h
kube-proxy-dwpcv                       1/1       Running   0          1h
kube-proxy-pxvjf                       1/1       Running   0          1h
kube-scheduler-srvlpi01                1/1       Running   0          1h
kubernetes-dashboard-ccf7f578c-s5zg9   1/1       Running   0          1h
weave-net-4xrgw                        2/2       Running   0          1h
weave-net-5qk2t                        2/2       Running   0          1h
weave-net-mf7zf                        2/2       Running   0          1h

pi@srvlpi01:~ $ kubectl --namespace=weave get pods
NAME                               READY     STATUS             RESTARTS   AGE
weave-scope-agent-25k2c            0/1       Error              14         46m
weave-scope-agent-jfc6r            0/1       CrashLoopBackOff   13         46m
weave-scope-agent-rn6zj            0/1       CrashLoopBackOff   13         46m
weave-scope-app-54889b8bc5-l4kdn   0/1       CrashLoopBackOff   13         46m

Versions:

$ scope version

pi@srvlpi01:~ $ docker version
Client:
 Version:           18.06.0-ce
 API version:       1.38
 Go version:        go1.10.3
 Git commit:        0ffa825
 Built:             Wed Jul 18 19:19:46 2018
 OS/Arch:           linux/arm
 Experimental:      false

Server:
 Engine:
  Version:          18.06.0-ce
  API version:      1.38 (minimum version 1.12)
  Go version:       go1.10.3
  Git commit:       0ffa825
  Built:            Wed Jul 18 19:15:34 2018
  OS/Arch:          linux/arm
  Experimental:     false

pi@srvlpi01:~ $ uname -a
Linux srvlpi01 4.14.50-v7+ #1122 SMP Tue Jun 19 12:26:26 BST 2018 armv7l GNU/Linux

pi@srvlpi01:~ $ kubectl version
Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.1", GitCommit:"b1b29978270dc22fecc592ac55d903350454310a", GitTreeState:"clean", BuildDate:"2018-07-17T18:53:20Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/arm"}
Server Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.1", GitCommit:"b1b29978270dc22fecc592ac55d903350454310a", GitTreeState:"clean", BuildDate:"2018-07-17T18:43:26Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/arm"}

Logs:

pi@srvlpi01:~ $ docker logs d99736314b40
standard_init_linux.go:190: exec user process caused "exec format error"

or, if using Kubernetes:

pi@srvlpi01:~ $ kubectl logs weave-scope-app-54889b8bc5-l4kdn -n=weave
standard_init_linux.go:190: exec user process caused "exec format error"

[myoung34]

Are there plans to build this for ARM? This still happens

[bboreham]

We actually do build it for ARM; what we don't do is run the test suite and release the images. Or do any of the multi-arch manifest stuff.

https://github.com/weaveworks/scope/blob/bf6af9cfcc86c6cc023c440c313c6c69b586c54f/.circleci/config.yml#L116

If you'd like to figure out how to do any of that and submit a PR, let us know.

[myoung34]

Are there plans to do this? Forking all of that to cross build is pretty hefty

[bboreham]

No plans at present.

This is an Open Source project: no plans are necessary, just someone showing up to do the work.