ovh/kubernetes

Let's talk about our Kubernetes As a Service Product #OVH

Dennis van der Veeke

@MrDienns

@nsteinmetz i have setup secret manager according to this site: https://developer-docs.citrix.com/projects/citrix-k8s-ingress-controller/en/latest/certificate-management/acme/
so far, so good, i can see all created pods doing stuff and I see a secret being created which has a certificate in it, so yay, however, it seems to still serve the default traefik certificate

Dennis van der Veeke

@MrDienns

though i did notice it has two certificates in the tls.cert value, im not sure if this is normal

Christian

@zeeZ

the second one is likely the intermediate

you usually include the certificate chain up to (without) the root or whatever certificate you're confident the client has, in order for it to be able to verify the chain

Dennis van der Veeke

@MrDienns

i see, so that behavior can be normal

it has done that for all domains so i suppose it is

though its still not serving the certificate that's been created

Christian

@zeeZ

How did you check? For example I've got to restart chrome to see a certificate change

Dennis van der Veeke

@MrDienns

i checked in incognito and asked some other people to check

Dennis van der Veeke

@MrDienns

ah its working now, i had to mark the 443 endpoint as TLS with

        - --entryPoints=Name:https Address::443 TLS
        - --entryPoints=Name:http Address::80
        - --defaultentrypoints=https,http

Ciaran

@ciaranlangton

I'm having issues with a LoadBalancer, I updated a LoadBalancer adding a port, and now the loadbalancer can no longer be ensured due to a 500 internal server error

  Normal   EnsuringLoadBalancer        35m (x102 over 8h)  service-controller  Ensuring load balancer
  Normal   EnsuringLoadBalancer        89s (x12 over 31m)  service-controller  Ensuring load balancer
  Warning  CreatingLoadBalancerFailed  89s (x12 over 31m)  service-controller  Error creating load balancer (will retry): failed to ensure load balancer for service tcpingress/tcpingress: 500 Internal Server Error: {"error":"Internal Server Error"}

the yaml for the LoadBalancer is as follows:

apiVersion: v1
kind: Service
metadata:
  name: tcpingress
  namespace: tcpingress
spec:
  selector:
    app: tcpingress
  type: LoadBalancer
  ports:
    - name: redactedOne
      protocol: TCP
      port: 33745
      targetPort: 33745
    - name: redactedTwo
      protocol: TCP
      port: 33746
      targetPort: 33746

Michał Frąckiewicz

@SystemZ

Did you try with other ports ?

Ciaran

@ciaranlangton

yes, I originally had a much higher port, so I changed it down to one above the other, to no effect

Michał Frąckiewicz

@SystemZ

It's strange for me that you need to expose the same port that you use internally

Ciaran

@ciaranlangton

if that may be the problem, that can be changed

Michał Frąckiewicz

@SystemZ

usually you would need expose port like 443 or 80, just saying

are you trying with HTTP / HTTPS or it's something different ?

Ciaran

@ciaranlangton

yeah, it's not a HTTP service, both are just TCP based applications

Michał Frąckiewicz

@SystemZ

oh, ok

Ciaran

@ciaranlangton

the first one is a database, which has worked fine over the LB for ~4 weeks now with no issue, but adding the second port stops the LB from being completed on OVH's end

Michał Frąckiewicz

@SystemZ

some range of ports were reserved maybe you just run over them

Ciaran

@ciaranlangton

yeah, I'll try some other ports and report back

Michał Frąckiewicz

@SystemZ

if you leave one port it works ok ?

Ciaran

@ciaranlangton

correct, the first port has been there for ~4 weeks fully functional

Michał Frąckiewicz

@SystemZ

oh, maybe it's some bug or LB doesn't support more than one port, hard to tell

Ciaran

@ciaranlangton

I just took the second one out now, and it ensures properly

Normal EnsuredLoadBalancer 3s service-controller Ensured load balancer

Yeah, I read the docs and it said that there were a maximum of 6 ports on an LB

maybe the problem only occurs when adding new ports to an already existing LB

since I've had other LBs with multiple ports before, just that they were initialized with that number of ports

Michał Frąckiewicz

@SystemZ

yea, maybe launch just new with those ports

if not, you should wait for some ovh team online :)

Michał Frąckiewicz

@SystemZ

I again encountered problem with adding node to my empty sandbox cluster 1b5e5c98-023e-4891-8887-2f3ac6336c64.
When I clicked "upgrade minor version" during this freeze I've got error 500

Thomas Coudert

@thcdrt

Hello @SystemZ, checking.

The 500 error should be a 400 error instead. You can't upgrade you cluster while a node is installing

Michał Frąckiewicz

@SystemZ

thx, yea I just assumed that error 500 is not desired for this edge case

Thomas Coudert

@thcdrt

Yes sorry about that.. We'll fix that asap

Hello @ciaranlangton , indeed you should be able to create LBs with 2 ports. Can you give me your cluster-id in private to allow me to dig into logs ? Thanks

Ghost

@ghost~5bc6039cd73408ce4faba551

Hello this morning I have one of my pod in "InvalidNodeInfo" state. Any idea what could cause this kind of issue ?

Ghost

@ghost~5bc6039cd73408ce4faba551

Ok I have some strange log message on logs metrics server :

E0915 10:32:05.134618       1 summary.go:97] error while getting metrics summary from Kubelet node-c4260b85-c8c7-4f7d-88e9-id( [IP]:10250): Get https://[IP]:10250/stats/summary/: dial tcp [IP]2:10250: getsockopt: no route to host

Nicolas Steinmetz

@nsteinmetz

@MrDienns did you check the Certificate object was celle created first ? (kubectl describe secrets/YourCertificate if I remember well ?)

@MrDienns so all is working ? sorry I spent most of my week-end in the garden :-)

Thomas Coudert

@thcdrt

Hello @bmagic , can you send me in private your cluster id and the node IP please ?

Michał Frąckiewicz

@SystemZ

any tips how to get all container logs sent to ovh log data platform?

I'm searching for something similar to this but with TLS output
https://github.com/roffe/kube-gelf

as far as I know, logstash doesn't support TLS for GELF protocol as input and fluentd doesn't support syslog output <facepalm>

Joël LE CORRE

@jlecorre_gitlab

Hello @SystemZ Maybe this documentation can help you?
I'm not sure if it meets your needs: https://docs.ovh.com/fr/logs-data-platform/kubernetes-fluent-bit/

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