panic: runtime error: invalid memory address or nil pointer dereference

[bbe-dw]

Dear,

I am trying to set up a network test environment via containerlab. (We use Cumulus Linux in production)
After installing the prerequisites, I created a simple topology file.

name: DWlab1

topology:
nodes:
spine-test-01:
kind: cvx
image: networkop/cx:4.3.0
leaf-test-01:
kind: cvx
image: networkop/cx:4.3.0
leaf-test-02:
kind: cvx
image: networkop/cx:4.3.0

links:
- endpoints: ["spine-test-01:swp1", "leaf-test-01:swp51"]
- endpoints: ["spine-test-01:swp2", "leaf-test-02:swp51"]
- endpoints: ["leaf-test-01:swp49", "leaf-test-02:swp49"]

When I launch the containerlab deploy, I get this error message:

INFO[0000] Containerlab v0.32.0 started
INFO[0000] Parsing & checking topology file: DWlab1.clab.yml
INFO[0000] Creating lab directory: /srv/lab/DWlab01/clab-DWlab1
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x68 pc=0x1ff0e26]

goroutine 40 [running]:
github.com/weaveworks/ignite/pkg/apis/ignite.(*VM).SetKernel(...)
github.com/weaveworks/ignite@v0.10.0/pkg/apis/ignite/helpers.go:18
github.com/srl-labs/containerlab/runtime/ignite.(*IgniteRuntime).StartContainer(0xc00062aed0, {0x32c0a60, 0xc000b12300}, {0xc000617760?, 0x1c?}, 0xc00070ca80)
github.com/srl-labs/containerlab/runtime/ignite/ignite.go:178 +0x2a6
github.com/srl-labs/containerlab/nodes/cvx.(*cvx).Deploy(0xc0005caec0, {0x32c0a60, 0xc000b12300})
github.com/srl-labs/containerlab/nodes/cvx/cvx.go:82 +0x76
github.com/srl-labs/containerlab/clab.(*CLab).scheduleNodes.func1(0x580525?, 0xc00057e120, 0xc000502fd0?, {0x32c5b30, 0xc000092f90})
github.com/srl-labs/containerlab/clab/clab.go:308 +0x3e7
created by github.com/srl-labs/containerlab/clab.(*CLab).scheduleNodes
github.com/srl-labs/containerlab/clab/clab.go:339 +0x145

Have you ever encountered the case with cx images ? Could I have missed something?
Thanks for your help

[hellt]

Hi

Try to Set the runtime to docker with

name: ...
topology:
default:
runtime: docker

Also maybe @networkop knows if something has changed in ignite

[bbe-dw]

I would like to use the ignite method because container runtime method not supported MLAG.
Thanks for the suggestion

[networkop]

AFAIR, all ignite dependencies should be baked into containerlab and statically pinned. I'll test locally to confirm

[steiler]

The diff is the wrong way around... that is a function thats been added in v0.32.0 for the DependencyManagement.
All the rest seems to be just formatting.

[steiler]

right @hellt ... I remember now, I've mentioned the specific of what I might have broke in the PR.
#976 (comment)

[hellt]

@steiler would you be able to have a look at that?

[steiler]

Should be this snippet thats no longer existing.
https://github.com/srl-labs/containerlab/blob/v0.31.1/cmd/deploy.go#L193-L195

so let me implement a additional createIgniteDependency(...) function. that results in dependency chain ...

x -> nil
y -> x
z -> y

would that be sufficient? @networkop

[networkop]

I don't fully understand your explanation. I do remember that ignite needs to create VMs sequentially, so as long as you can make that happen, I think it might work.

[hellt]

So as it was discovered in #1039 there are issues with ignite that appear after we upgraded some packages.
Unfortuntely we can't revert the package upgrade, so for now the ignite is out of support. cvx uses have two options

• use 0.27.1 containerlab
• or use docker runtime

[hellt]

Hi Try to Set the runtime to docker with name: ... topology: default: runtime: docker

…

On Tue, 27 Sep 2022 at 11:04, Bben ***@***.***> wrote: Dear, I am trying to set up a network test environment via containerlab. (We use Cumulus Linux in production) After installing the prerequisites, I created a simple topology file. name: DWlab1 topology: nodes: spine-test-01: kind: cvx image: networkop/cx:4.3.0 leaf-test-01: kind: cvx image: networkop/cx:4.3.0 leaf-test-02: kind: cvx image: networkop/cx:4.3.0 links: - endpoints: ["spine-test-tbt-01:swp1", "leaf-test-tbt-01:swp51"] - endpoints: ["spine-test-tbt-01:swp2", "leaf-test-tbt-02:swp51"] - endpoints: ["leaf-test-tbt-01:swp49", "leaf-test-tbt-02:swp49"] When I launch the containerlab deploy, I get this error message: INFO[0000] Containerlab v0.32.0 started INFO[0000] Parsing & checking topology file: DWlab1.clab.yml INFO[0000] Creating lab directory: /srv/lab/DWlab01/clab-DWlab1 panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x68 pc=0x1ff0e26] goroutine 40 [running]: github.com/weaveworks/ignite/pkg/apis/ignite.(*VM).SetKernel(...) ***@***.***/pkg/apis/ignite/helpers.go:18 github.com/srl-labs/containerlab/runtime/ignite.(*IgniteRuntime).StartContainer(0xc00062aed0, {0x32c0a60, 0xc000b12300}, {0xc000617760?, 0x1c?}, 0xc00070ca80) github.com/srl-labs/containerlab/runtime/ignite/ignite.go:178 +0x2a6 github.com/srl-labs/containerlab/nodes/cvx.(*cvx).Deploy(0xc0005caec0, {0x32c0a60, 0xc000b12300}) github.com/srl-labs/containerlab/nodes/cvx/cvx.go:82 +0x76 github.com/srl-labs/containerlab/clab.(*CLab).scheduleNodes.func1(0x580525?, 0xc00057e120, 0xc000502fd0?, {0x32c5b30, 0xc000092f90}) github.com/srl-labs/containerlab/clab/clab.go:308 +0x3e7 created by github.com/srl-labs/containerlab/clab.(*CLab).scheduleNodes github.com/srl-labs/containerlab/clab/clab.go:339 +0x145 Have you ever encountered the case with cx images ? Could I have missed something? Thanks for your help — Reply to this email directly, view it on GitHub <#1036>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABLKV5OSG3ZCNGI5GYNDLF3WAK2BNANCNFSM6AAAAAAQWSDJSA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>