#kubernetes (2023-03)
Archive: https://archive.sweetops.com/kubernetes/
2023-03-01
Is anyone here using:
• EKS
• istio-cni
• istio sidecars?
Just want to confirm if you should see istio-init containers when using istio-cni (we are!) The documentation suggests that you shouldn’t :thinking_face:
The Istio CNI plugin replaces the functionality provided by the
istio-initcontainer.
2023-03-07
Anyone ever had cURL periodically throw 000 for Kubernetes CronJobs that are making internal HTTP POST calls to K8S services? I don’t have any Network policy that is isolating namespaces defined and no Istio sidecar on the CronJob pod. If I set the job to sleep and interactively connect to the running job and make the same call I can’t reproduce. I have set a ReadinessProbe with an init delay to GET the same endpoint and that passes (with retries) and then the subsequent POST seemingly randomly fails. It is bizarre
000 means cURL didn’t execute for some reason, See if you can capture the exit code which is different than 000
Yeah, it is periodic. I added retries as a bandaid
And some calls with be 000 and some calls will be 2XX. Again, none of them are 000 if I am calling cURL interactively from the pod.
curl -s -o /dev/null -w "%{http_code}" --connect-timeout 10 --max-time 30 -H "Authorization:$SECRET" -XPOST <http://svcA.nsA.svc.cluster.local:8080/api/endpoint> -d ""
The call in the job for ref.
Can you added a ; echo "Exit code: $? to the end of that?
That might help debugging the situation
Thank you for the suggestions
Anyone using kubedb by appscode? If so, can you share your experience?
@Dan Miller (Cloud Posse) what was the rub here? I recall we tried using it.
We had a use case where we wanted to implement multiple DB operators for mysql and redis, and kubedb looked like it wouldve worked. However, kubedb is pay to use so we decided against it. Instead we used:
2023-03-08
2023-03-13
2023-03-15
2023-03-20
Is anyone using cast.ai for managing their clusters?
https://cast.ai/pricing/ their pricing model directly conflicts with what they’re trying to achieve - by pricing per cpu they earn less the better they are
Hello
I’ve started new Kubernetes Operations Survey. The goal is to better understand so-called “2nd day operations” on Kubernetes clusters e.g. upgrades, migrations, etc. I would appreciate it if you could spend a couple of minutes to fill that out!
Results of the last year’s survey are here.
Thank you!
@Dan Miller (Cloud Posse) has joined the channel
2023-03-21
2023-03-28
EKS no longer has a functional default storage class? I cannot create StatefulSet on 1.24 and 1.25, but I tried the same STS on 1.22 and it works fine.
Yes on 1.24+ the csi driver needs to be added. I believe EKS has an addon for this. Alternatively you can install it into EKS yourself as a helm chart
It’s not a walk in the park. I documented here. It’s required in 1.23+
Also, documented it here https://joachim8675309.medium.com/ultimate-eks-baseline-cluster-46593e75bb68
