Vault injector not working with GKE v1.23

Vault
1

I am using the Vault Agent Injector with external Vault. Everything works until v1.22 but in the v1.23 the injector is dead silent. No errors or anything. I saw that GCP made some changes regarding to the webhooks but i checked those steps from there and didn’t see any resources that would affect the injector:

If i look at the injector pod logs:

2022-12-20T07:52:15.849Z [INFO]  handler.auto-tls: Generated CA
2022-12-20T07:52:15.872Z [INFO]  handler: Starting handler..
Listening on ":8080"...
2022-12-20T07:52:15.950Z [INFO]  handler.certwatcher: Updated certificate bundle received. Updating certs...
2022-12-20T07:52:15.958Z [INFO]  handler.certwatcher: Webhooks changed. Updating certs...
2022-12-20T07:52:15.959Z [INFO]  handler.certwatcher: Webhooks changed. Updating certs...
2022-12-20T07:52:15.959Z [INFO]  handler.certwatcher: Webhooks changed. Updating certs...
2022-12-20T07:52:15.960Z [INFO]  handler.certwatcher: Webhooks changed. Updating certs...
2022-12-20T07:52:15.960Z [INFO]  handler.certwatcher: Webhooks changed. Updating certs...
2022-12-20T07:52:15.961Z [INFO]  handler.certwatcher: Webhooks changed. Updating certs...

Have someone else had this issue and solved it?

2

This was due me not allowing traffic from the GKE master to port 8080 to allow the webhook to work.