[Release-1.25] - Disable http/grpc mux for etcd

[brandond]

Backport fix for Disable http/grpc mux for etcd

• Disable http/grpc mux for etcd #8415

[mdrahman-suse]

Validated on release-1.27 branch with commit bd04941

Environment Details

Infrastructure

• Cloud
• Hosted

Node(s) CPU architecture, OS, and Version:

Ubuntu 22.04.2 LTS (GNU/Linux 5.15.0-1031-aws x86_64)

Cluster Configuration:

1 server

Config.yaml:

write-kubeconfig-mode: 644
cluster-init: true
node-external-ip: <public-ip>

Testing Steps

1. Copy config.yaml

$ sudo mkdir -p /etc/rancher/k3s && sudo cp config.yaml /etc/rancher/k3s

2. Install k3s
3. Wait for the cluster to be up and running
4. Check the logs using: $ sudo journalctl -u k3s | grep "Running http"
5. Ensure no error message is displayed

Replication Results:

• k3s version used for replication:

$ k3s -v
k3s version v1.25.14+k3s1 (3624e6c4)
go version go1.20.8

• Apparently the issue was not observed on previous release. So validated that the issue does not show up in latest commits as well

$ sudo journalctl -u k3s | grep "Running http"
ubuntu@ip-xxx-xx-xx-230:~$

Validation Results:

• k3s version used for validation:

$ k3s -v
k3s version v1.25.14+k3s-1f3880c7 (1f3880c7)
go version go1.20.8

• Observed NO warn message in logs

$ sudo journalctl -u k3s | grep "Running http"
ubuntu@ip-xxx-xx-xx-230:~$