I installed SSL Let's Encrypt on Google Cloud VM and now I can't access SSH connection. I can't even access it via https://console.cloud.google.com. I checked the Firewall rules, and the documentation, but I couldn't find what caused this.

CodePudding user response：

These are the possible reasons why the VM instance have been inaccessible via SSH :

1. If there are no issues with the firewall rules, you can check if port 22 is open inside the VM instance. You can try using an online port checker to verify it.
2. After installing Let's Encrypt, your VM instance might have exhausted it's resources causing the service for port 22 to be terminated. I suggest you try rebooting/restarting the VM instance.
3. Upgrade the machine type of your VM instance incase you encounter the issue re-occurs.