Running EC2 instance suddenly refuses SSH connection

Question

I\'ve set up the EC2 instance couple days ago and even last night I was able to SSH to it with no problems. Today morning, I can\'t ssh to it. Port 22 is already open in the

Answer 1

Had the same issue, but sys logs had this:

Starting sshd: /var/empty/sshd must be owned by root and not group or world-writable. [FAILED]

Used the same steps described above to detach volume and attach to connectable instance. Then used:

sudo chmod 755 /var/empty/sshd

sudo chown root:root /var/empty/sshd

(https://support.microsoft.com/en-us/help/4092816/ssh-fails-because-var-empty-sshd-is-not-owned-by-root-and-is-not-group)

Then detached and reattached to original EC2 Instance and could now access via ssh.