Summary: SSH Agents hold your SSH keys while you traverse to other SSH targets, without revealing your private keys. Longer Explanation The concept of SSH keys should not be lost on you; if it is, check out my post about SSH keys made easy. However, if your ~/.ssh/authorized_keys file is getting long, and especially if you’re the only user, then you could use an SSH agent to help out.
So today, I was helping someone with a multi-site WordPress issue, and I linked to my blog. But guess what? It wasn’t coming up! All my external tests seemed to work, including Down for Everyone or Just Me, and even Cloudflare! I could still SSH into my server (as I was watching log files scroll by anyways!), so I knew it was up and accessible. So, what’s next?
Setting up Exim 4 is relatively easy on Debian, especially if you’re only sending mail to yourself (i.e. Server messages, Forget Password requests, etc). Because I have home-level Internet service from my Canadian ISP, I can’t host mail directly on this box - but I also don’t want to rely on Shaw’s mail servers if I ever change service later on in life.
Welcome back to Talk About IT! We had a bit of a mishap, so all the previous content is gone. Backup, backup backup! Luckily, all the customer data has been recovered, with no loss. The server has been reconfigured, with a proper RAID setup, and off-site backups. It is going to make things a lot easier to recover, hopefully! Once the extra computers I’ve ordered have arrived, I’ll work on setting up haproxy and getting some clustering going.