Kamel install failure

[squakez]

I am trying to install in my local minikube using kamel version 1.8.0. The operator pod starts but suddenly breaks with following traces:

$ k logs -p camel-k-operator-7c96b9b6bd-x8b6c
{"level":"info","ts":1643969642.5568368,"logger":"cmd","msg":"maxprocs: Leaving GOMAXPROCS=[8]: CPU quota undefined"}
{"level":"info","ts":1643969642.5568504,"logger":"cmd","msg":"Go Version: go1.16"}
{"level":"info","ts":1643969642.556853,"logger":"cmd","msg":"Go OS/Arch: linux/amd64"}
{"level":"info","ts":1643969642.5568547,"logger":"cmd","msg":"Buildah Version: 1.14.0"}
{"level":"info","ts":1643969642.5568566,"logger":"cmd","msg":"Kaniko Version: 0.17.1"}
{"level":"info","ts":1643969642.5568583,"logger":"cmd","msg":"Camel K Operator Version: 1.8.0"}
{"level":"info","ts":1643969642.5568602,"logger":"cmd","msg":"Camel K Default Runtime Version: 1.11.0"}
{"level":"info","ts":1643969642.5568619,"logger":"cmd","msg":"Camel K Git Commit: 7586d7c28775de8328677ff14df2c58792299e21"}
{"level":"info","ts":1643969642.5770018,"logger":"controller-runtime.metrics","msg":"metrics server is starting to listen","addr":":8080"}
{"level":"info","ts":1643969642.5772111,"logger":"cmd","msg":"Configuring manager"}
{"level":"info","ts":1643969642.5818698,"logger":"cmd","msg":"Installing operator resources"}
fatal error: sync: unlock of unlocked mutex

goroutine 461 [running]:
runtime.throw(0x240c728, 0x1e)
	runtime/panic.go:1117 +0x72 fp=0xc0012b1d90 sp=0xc0012b1d60 pc=0x4385b2
sync.throw(0x240c728, 0x1e)
	runtime/panic.go:1103 +0x35 fp=0xc0012b1db0 sp=0xc0012b1d90 pc=0x46d1b5
sync.(*Mutex).unlockSlow(0x374f49c, 0xc0ffffffff)
	sync/mutex.go:196 +0xd8 fp=0xc0012b1dd8 sp=0xc0012b1db0 pc=0x47d478
sync.(*Mutex).Unlock(0x374f49c)
	sync/mutex.go:190 +0x48 fp=0xc0012b1df8 sp=0xc0012b1dd8 pc=0x47d388
sync.(*Once).doSlow(0x374f498, 0xc000c07f20)
	sync/once.go:70 +0x9a fp=0xc0012b1e48 sp=0xc0012b1df8 pc=0x47d59a
sync.(*Once).Do(...)
	sync/once.go:59
github.com/apache/camel-k/pkg/install.KameletCatalog.func1.1(0x0, 0x0)
	github.com/apache/camel-k/pkg/install/kamelets.go:98 +0x3f7 fp=0xc0012b1f78 sp=0xc0012b1e48 pc=0x1c582f7
golang.org/x/sync/errgroup.(*Group).Go.func1(0xc00075d380, 0xc000a41f80)
	golang.org/x/sync@v0.0.0-20210220032951-036812b2e83c/errgroup/errgroup.go:57 +0x59 fp=0xc0012b1fd0 sp=0xc0012b1f78 pc=0x1a6fe59
runtime.goexit()

This is repeated as many times as we have Kamelets from default catalog, so, I have the feeling it relates to the change we did either in apache/camel-kamelets#754 or apache/camel-kamelets#755. Likely there is something not good when we try to install the kamelets with .template instead that .flow

[squakez]

Workaround while we fix the issue:

$ export KAMELET_CATALOG_DIR="/tmp/"
$ kamel install
OLM is not available in the cluster. Fallback to regular installation.
Camel K installed in namespace default
$ k get pods
NAME                                READY   STATUS    RESTARTS      AGE
camel-k-operator-7c96b9b6bd-x8b6c   1/1     Running   9 (16m ago)   32m

You can use any existing directory which has no kamelets defined in it

[squakez]

I think the problem was due to some old kamelet definition in my namespace. If I delete the kamelets, then the installation procedure won't show that problem.

[phantomjinx]

Note:
The error fatal error: sync: unlock of unlocked mutex concerns the use of sync.Once in the kamelet loading code. Documentation recommends that sync.Once should not be re-assigned within the function that is being executed. This error is the result.

See #3063 and related PRs for modification of code to ameliorate this problem.