So I’m working on a server from home.

I do a cat /sys/class/net/eth0/operstate and it says unknown despite the interface being obviously up, since I’m SSH’ing into the box.

I try to explicitely set the interface up to force the status to say up with ip link set eth0 up. No joy, still unknown.

Hmm… maybe I should bring it down and back up.

So I do ip link set eth0 down and… I drive 15 miles to work to do the corresponding ip link set eth0 up

50 years using Unix and I’m still doing this… 😥

  • @sleepmodeEnglish
    16•3 days ago

    I was on-call and half awake when I got paged about a cache server’s memcached being down for the third time that night. They’d all start to go down like dominoes if you weren’t fast enough at restarting the service, which could overwhelm the database and messaging tiers (baaaaad news to say the least). Two more had their daemon shit the bed while I was examining it. Often it was best to just kick it on all of them to rebalance things. It was… not a great design.

    So I wrote a quick loop to ssh in and restart the service on each box in the tier to refresh them all just in case and hopefully stop the incessant pages. Well. In my bleary eyed state I set reboot in the variable instead of restart. Took out the whole cache tier (50+) and the web site. First and only time I did that but that definitely woke me up. Oddly enough the site ran better after that for months as my reboots uncovered an undiscovered problem.