Access another pod over SSH tunnel in K8s

k8s-ssh-tunnel.md

1. Install devspace to access k8s easily

   brew install devspace

2. accessable-pod is a pod that you can access over ssh

   devspace -n <accessable-pod> enter -- bash -c "echo $(cat ~/.ssh/id_rsa.pub) >> ~/.ssh/authorized_keys"

3. copy local key to

   cat << EOF >> ~/.ssh/config
   Host ssh-server
       Hostname 127.0.0.1
       User root
       Port 2300
       ProxyCommand devspace -n sre enter -- nc localhost 2300
       IdentitiesOnly yes
   EOF

4. open tunnel, <targer_id>:<target_port> is ip and port that you want to connect

   ssh ssh-server -vvv -L8000: <targer_id>:<target_port>

5. test connection

   telnet localhost 8000