How to disable KlipperLB from Nginx Ingress?

[tekspacedemo]

Hi, I installed Nginx Ingress by using helm chart to my k3s cluster. It enabled KlipperLB on all of my node and I would like to disable it so that I can use ingress with my external LB. Please let me know what info I need to provide to able to get further assistance?

[TheYkk]

--disable servicelb

[tekspacedemo]

Thanks @TheYkk for your response. So I guess I need to apply that arg at the cluster setup step? Is there a way to disable that after cluster is setup? I dont want to tear down the cluster and rebuild it.

[TheYkk]

You can add this flag to your cluster setup script. In k3s upgrading, the cluster will not break your cluster

[tekspacedemo]

Okay. So you are saying, if I execute below command on my master node that is running the cluster, it will simply disable klipperlb and not break the cluster?

curl -sfL https://get.k3s.io | sh -s - server --disable servicelb

[TheYkk]

It will be brek your load balancers but, you can fix by installing other load balancer solutions.

If you setup cluster with curl -sfL https://get.k3s.io | sh it's not gonna break the cluster but if you applied some flags on cluster setup you have to write again as flag

[tekspacedemo]

Okay. I will give that a try. As long as it will disables below controllers I should be fine. Thanks for looking into this.

svclb-home-ingress-nginx-controller-2nh5x        2/2     Running   0          18h
svclb-home-ingress-nginx-controller-ft9x9        2/2     Running   0          18h
svclb-home-ingress-nginx-controller-ggvkk        2/2     Running   0          18h

[rthamrin]

1. if you start installing k3s and need to disable the Traefik and Klipper.

# curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="server --disable=traefik --disable=servicelb" sh –

2. the second way is to go to edit your file using nano or vim
   #/etc/systemd/system/k3s.service

int the last line, you can add

ExecStart=/usr/local/bin/k3s \
    server \
        '--disable=traefik' \
        '--disable=servicelb' \

3. you may also try this, edit #/etc/systemd/system/k3s.service
   and add in the last line
   ExecStart=/usr/local/bin/k3s server --disable servicelb --disable traefik

after you add the line, don't forget to restart the daemon of the K3S

systemctl daemon-reload
systemctl restart k3s.service