ovh/kubernetes

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

Guillaume

@dracorpg

PersistentVolumes are not namespaced, but PersistentVolumeClaims are

I suppose the PV where SQL data is persisted was dynamically provisioned by a PVC ?

monsio

@kaizokun

ok so I could just create a new pvc cool

Guillaume

@dracorpg

yeah but BUT if you delete the previous one, the underlying PV (and even OpenStack Cinder volume) will be deleted with it, by default

you first have to change the current PV's reclamation policy to "Retain" instead of "Delete"

monsio

@kaizokun

ok thank you very much

Guillaume

@dracorpg

then you should add a volumeName: 'your-pv-name-here' line to the PVC's spec

so the claim will bind to this existing PV instead of dynamically provisioning a new (empty) PV as per default

(not very elegant, this whole stuff, but it should work and avoid resorting to an dump-and-load process for your data)

monsio

@kaizokun

apparently the chart create de pv et pvc automaticly

I guess that I ll be able to target the old pv from the new pvc

Guillaume

@dracorpg

you'll have to hack your spec.volumeName in the chart template

monsio

@kaizokun

ok I just tried to modify the pvc config but It doesn't work :)

Guillaume

@dracorpg

once the PVC is created and a new PV has been dynamically provisioned for it, I'm not suuure you can un-bind the PVC and change its definition to bind it to another pre-existing PV instead

yeah, you'll have to do the hack in the original yml that is applied to create the PVC (for a Helm chart I guess it's somewhere in templates ?)

monsio

@kaizokun

probably there is a pvc.yalm in the templates folder but it uses variables

I don't know where the vars are declared

it seems more tricky than I thought I'll find an easier way ^^

Guillaume

@dracorpg

you don't really need to care about the variables Helm injects, just add your line in the template and it should work - but yeah, not absolutely trivial

kobrasz

@kobrasz

probably you can change variables in values.yaml, you can find this file in repository of your chart, I think that you have to create pvc on your own, attach there old pv and configure values.yaml to use your pvc insted of dynamically provisioned

arduinio

@arduinio

Is there any way to allow a comunication between container inside OVH kubernetes and virtual machine inside on private cloud OVH ?

Chaya56

@Chaya56

Hello,
Do we have an incident currently in managed kubernetes service ?

alt

Joël LE CORRE

@jlecorre_gitlab

Hello @Chaya56
I will check that with you in private if you want.

Joël LE CORRE

@jlecorre_gitlab

Problem solved for @Chaya56.
And for your information, we haven't any on going outage on our platform.

Chaya56

@Chaya56

fyi, problem is due to have multiple cluster, with node having the same name

Guilhem30

@Guilhem30

Hello, I'm trying to get the client real ip in the ingress controller and in my applications logs but it seems i'm only able to retrieve private ip addresses

even in the ingress controller (nginx) logs all the ip are in 10.110.X.Y

i modified my loadblancer to "externalTrafficPolicy: Local" but i'm still getting only private ip

Chaya56

@Chaya56

@Guilhem30 what kind of ingress controller are you using ? nginx-ingress-controller ?

Guilhem30

@Guilhem30

yes i'm using this https://github.com/kubernetes/ingress-nginx

deployed with helm

Chaya56

@Chaya56

you have to create a configmap with following values:

use-proxy-protocol: "true"
proxy-real-ip-cidr: "0.0.0.0/32"
use-forwarded-headers: "false"
log-format-upstream: '$proxy_protocol_addr etc...'
http-snippet: |
  geo $realip_remote_addr $is_lb {
    default       0;
    10.108.0.0/14 1;
  }
server-snippet: |
  if ($is_lb != 1) {
    return 403;
  }

Joël LE CORRE

@jlecorre_gitlab

Hi guys, you can follow this documentation to get the source IP behind your LoadBalancer:
https://docs.ovh.com/gb/en/kubernetes/getting-source-ip-behind-loadbalancer/

Chaya56

@Chaya56

you create config map in same namespace as your ingress controller, and you give it the name of your ingress controller, by example mine is named: app-proxy-nginx-ingress-controller

Guilhem30

@Guilhem30

okay, thank you i will try this right away

Chaya56

@Chaya56

@Guilhem30 and on my chart i've used this parameters:

helm install stable/nginx-ingress --namespace arx-dev --name app-proxy \
    --set rbac.create=true \
    --set controller.service.externalTrafficPolicy=Local \
    --set controller.service.annotations."service\.beta\.kubernetes\.io/ovh-loadbalancer-proxy-protocol"=v1

Guilhem30

@Guilhem30

okay, i'm missing the annotation

Guilhem30

@Guilhem30

thank for the help @Chaya56 and @jlecorre_gitlab , took me a moment but i'm able to get the source ip now

Chaya56

@Chaya56

@Guilhem30 you're welcome

thomasboni

@thomasboni

Hello guys, do you have any news about k8s load balancer cost ? It was planned to September (if I remember well)

arduinio

@arduinio

Good Morning to all

Is there any way to allow a comunication between container inside OVH kubernetes and virtual machine inside on private cloud OVH ?

Nicolas Steinmetz

@nsteinmetz

Interesting to avoid passwords in CI scripts & co :-)
https://blog.docker.com/2019/09/docker-hub-new-personal-access-tokens/

Bmagic

@bmagic

I think what you're looking for is the vrack. It doesn't seem to me that it's available yet. Otherwise you can always use the public network.

Otherwise I'm looking for a way to configure the ovh DNS automatically via a tool like this (to generate certificates with lets-encrypt): https://github.com/kubernetes-incubator/external-dns
For the moment ovh is not available in the providers of this tool, has anyone ever had this problem and a solution?

Thomas Coudert

@thcdrt

@bmagic I confirm that vrack is not available for now

arduinio

@arduinio

thaks @bmagic and @thcdrt

Jawher Moussa

@jawher_twitter

@SystemZ Hello ! Did you manage to get the fluent-bit grep filter to work to exclude canal pods logs ? I added this bloc to the end of my filter-kubernetes.conf entry in the configmap:

    [FILTER]
        Name    grep
        Match   *
        Exclude kubernetes_container_name calico-node|wormhole

and I still keep getting canal logs sent to graylog

Guilhem30

@Guilhem30

Is there a way to ban/blacklist an ip address from connecting to a loadbalancer k8s service ?

Where communities thrive

People

Repo info

Activity