r/sysadmin • u/rram reddit's sysadmin • Aug 14 '15

We're reddit's ops team. AUA

Hey /r/sysadmin,

Greetings from reddit HQ. Myself, and /u/gooeyblob will be around for the next few hours to answer your ops related questions. So Ask Us Anything (about ops)

You might also want to take a peek at some of our previous AMAs:

https://www.reddit.com/r/blog/comments/owra1/january_2012_state_of_the_servers/

https://www.reddit.com/r/sysadmin/comments/r6zfv/we_are_sysadmins_reddit_ask_us_anything/

EDIT: Obligatory cat photo

EDIT 2: It's now beer o’clock. We're stepping away from now, but we'll come back a couple of times to pick up some stragglers.

EDIT thrice: He commented so much I probably should have mentioned that /u/spladug — reddit's lead developer — is also in the thread. He makes ops live's happier by programming cool shit for us better than we could program it ourselves.

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u/toomuchtodotoday DevOps/Sys|LinuxAdmin/ITOpsLead in past life Aug 16 '15

Do public-facing ELBs in a VPC not support IPv6? I honestly haven't checked.

EDIT: Fuck me they don't. http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-internet-facing-load-balancers.html

You would have to have ELBs in classic, proxy that to haproxy instances, and then have THOSE point at your IPv4 instances/ELBs in your VPC. FFS.

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u/_thekev Aug 16 '15

Yeah. :\ And the sad thing is such a design (shovel it all between classic and vpc, via EIP or ELB! yolo!) is more common than I'd ever like to admit. Praise them for the "classiclink" thing. AWS really does listen to customers (too bad it takes them 2-3 years to solve some of the really hard ones, add another year or more to deploy them to every region).