无法通过 ssh 连接到谷歌云实例

Question

I'm newbie for GCP and I need your help which this is the step I had made. (1) I setup google cloud firewall rules to allow ssh on port 22 and I can ssh to my instance, CentOS7, correctly. (2) When I connect to my instance, I run some firewall script and after that I cannot ssh to my instance anymore. It seem that script block ssh port even I enable it in the VPC Network > Firewall rules. (3) Now I cannot connect to my instance including Open in browser window in the SSH menu on gcp console.

Is there any solution to connect my instance? Please help.

Thank in advance. Bom

Answer 1

You probably change block ssh port by changing firewall configuration inside VM.

So you can consider 2 options :

1) Recreate VM if no sensitive data, or not too much work spent for the existing setup.

2) Detach Boot disk and reuse it on another instance, to change the configuration files of firewal.

check Official Docs - Use your disk on a new instance for that:

gcloud compute instances delete $PROB_INSTANCE
    --keep-disks=boot

gcloud compute instances create new-instance
    --disk name=$BOOT_DISK,boot=yes,auto-delete=no

gcloud compute ssh new-instance

Hope it will help you.