I have a mailserver running iRedmail - due to some issues with rDNS and ptr records, I was required to change the hostname.
I changed the following config files:
/etc/hosts /etc/hostname /etc/ssl/<redacted>
Since this change, I’ve been unable to SSH into the server - I’ve tried multiple points of entry, locally using Putty and from several remote VPSs, all fail with a connection timeout. An example of the timeout:
user@server:~$ ssh -v <user>@<FQDN> -p <port> OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to <redacted> port <port>. debug1: connect to address <redacted> port <port> Connection timed out ssh: connect to host <redacted> port <port>: Connection timed out
Putty shows almost identical logging output.
I’ve recursively grep’d for the old hostname:
sudo grep -Rio “<old_hostname>” /
Initially, this turned up some PKI entries, so I simply piped the output into sed -i. I’ve since checked and there are no more references to the old hostname anywhere, yet I still cannot connect. Of course, I’ve rebooted the server a number of times and ensured all available services are running - if I attempt to SSH into the default port (from which I’ve changed), I immediately get connection refused.
FYI: I can login via tty1 (console access).
Any help or advice would be appreciated
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.
Click below to sign up and get $100 of credit to try our products over 60 days!