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## SSH Debug Client | ||
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For quickly ssh to nodes in an internal network you could deploy this manifest. | ||
Create or add your key to the provided [`./secrect.ssh.key.yaml`](./secrect.ssh.key.yaml) file and trigger the deployment: | ||
Create or add your key to the provided [`./secrect.ssh.files.yaml`](./secrect.ssh.files.yaml) file and trigger the deployment: | ||
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```bash | ||
# create ssh secret from id_rsa,id_rsa.pub under `.ssh`folder: | ||
kubectl create secret generic --from-file ./.ssh/ ssh-key -n default --dry-run -o yaml > ./secrect.ssh.key.yaml | ||
kubectl create secret generic --from-file ./.ssh/ ssh-files --dry-run -o yaml > ./secrect.ssh.files.yaml | ||
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#deploy manifests | ||
kubectl apply -f ./ | ||
#for k1 | ||
kubectl apply -f ./deployment.ssh.k1.debug.yaml -f ./secrect.ssh.files.yaml | ||
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#alternative | ||
kubectl apply -f ./deployment.ssh.debug.yaml -f ./secrect.ssh.files.yaml | ||
``` | ||
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Use now `kubectl exec -it` to login to container, and connect to the nodes ip's of the kvirt vmi's: | ||
```bash | ||
#at seed cluster | ||
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@@ -18,4 +23,28 @@ kubectl get vmi -A | |
kubectl exec -it -n default ssh-debug-xx-xxx bash | ||
# e.g. for ubuntu worker node | ||
ssh ubuntu@IP-OF-VMI | ||
``` | ||
``` | ||
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### Use NGROK Tunnel | ||
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We could NGROK to open an external tunnel to e.g. a secured network to get an SSH Tunnel into the cluster. To get required tokens go to the [NGROK Dashboard > Your Authtoken](https://dashboard.ngrok.com/get-started/your-authtoken) and then create an Edge Gateway [NGROK Dashboard > Edges > New Edge > TCP](https://dashboard.ngrok.com/cloud-edge/edges) | ||
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To setup a ngrok tunnel inside the containers, uncomment the lines at [`deployment.ssh.k1.debug.yaml`](./deployment.ssh.k1.debug.yaml): | ||
```yaml | ||
#Optional: your ngrok command to join | ||
ngrok config add-authtoken xxxx-YOUR-TOKEN-xxxx | ||
ngrok tunnel --log stdout --label edge=xxxx-your-edge-label 22 | ||
``` | ||
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For the logs, check: | ||
```bash | ||
kubectl logs deployments/ssh-debug-k1-admin -f | ||
``` | ||
Now after the tunnel is up you could use the public IP and ssh into the private cluster network: | ||
```bash | ||
# e.g. your ngrok IP: 8.tcp.eu.ngrok.io:21197 | ||
ssh -t [email protected] -p 21197 | ||
``` | ||
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**NOTE:** The tunnel could get used for other use cases like a https connection. See [Ngrok Docs](https://ngrok.com/docs) | ||
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apiVersion: apps/v1 | ||
kind: Deployment | ||
metadata: | ||
labels: | ||
app.kubernetes.io/name: ssh-debug-k1-admin | ||
name: ssh-debug-k1-admin | ||
spec: | ||
strategy: | ||
type: Recreate | ||
replicas: 1 | ||
selector: | ||
matchLabels: | ||
app.kubernetes.io/name: ssh-debug-k1-admin | ||
template: | ||
metadata: | ||
labels: | ||
app.kubernetes.io/name: ssh-debug-k1-admin | ||
spec: | ||
terminationGracePeriodSeconds: 0 | ||
containers: | ||
- args: | ||
- /bin/bash | ||
- -c | ||
- | | ||
mkdir -p /root/.ssh | ||
ls -lah /tmp/.ssh | ||
cp /tmp/.ssh/* /root/.ssh/ | ||
chmod 0600 /root/.ssh/* | ||
ls -lah /root/.ssh | ||
service ssh restart | ||
#Optional: your ngrok command to join | ||
#ngrok config add-authtoken xxxx-YOUR-TOKEN-xxxx | ||
#ngrok tunnel --log stdout --label edge=xxxx-your-edge-label 22 | ||
image: quay.io/kubermatic-labs/kubeone-tooling:1.7.2-2024-02-14 | ||
name: k1-admin | ||
stdin: true | ||
stdinOnce: true | ||
tty: true | ||
readinessProbe: | ||
tcpSocket: | ||
port: 22 | ||
securityContext: | ||
runAsNonRoot: false | ||
runAsUser: 0 | ||
volumeMounts: | ||
- mountPath: /tmp/.ssh | ||
name: ssh-files | ||
tolerations: | ||
- effect: NoExecute | ||
key: node.kubernetes.io/not-ready | ||
operator: Exists | ||
tolerationSeconds: 300 | ||
- effect: NoExecute | ||
key: node.kubernetes.io/unreachable | ||
operator: Exists | ||
tolerationSeconds: 300 | ||
volumes: | ||
- name: ssh-files | ||
secret: | ||
secretName: ssh-files | ||
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apiVersion: v1 | ||
kind: Secret | ||
metadata: | ||
name: ssh-files | ||
stringData: | ||
# id_rsa: | | ||
#TODO-PRIVATE-SSH-KEY | ||
# id_rsa.pub: | | ||
#TODO--PUBLIC-SSH-KEY | ||
authorized_keys: |- | ||
# add your ssh public-key |
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