Die Replicated! Die!

In the "cloud-first" world, we often treat everything as throw-away (because it is), but sometimes it's just a lot easier to run a few commands to purge an install to get back to a clean state than it is to blow away a whole VPS and start over (or reinstall a server from scratch - ick!)

First, Really Remove Docker

Replicated is very sticky. If you want to get back to a clean state, first you need to run some mad Docker foo.

Since this would be dangerous if you're also running other docker services and I don't want to re-type all my warnings and explanations (because I don't know how to copy and paste, of course), I'll just link to the article where I covered that:

• No, REALLY Remove Docker

It's the nuclear option, but it'll twist the arm of your Replicated instances and make them obey (whereas otherwise they may keep respawning).

Finally, Really Remove Replicated

Actually, I don't even remember where I found this, but it was in a script file on a machine that had a Replicated install, and when I ran it and rebooted I was able to re-install fresh.

purge-replicated.sh:

set -x

service replicated stop
service replicated-ui stop
service replicated-operator stop

docker stop replicated-premkit
docker stop replicated-statsd
docker rm -f replicated replicated-ui replicated-operator replicated-premkit replicated-statsd retraced-api retraced-processor retraced-cron retraced-nsqd retraced-postgres

docker images | grep "quay\.io/replicated" | awk '{print $3}' | xargs sudo docker rmi -f
docker images | grep "registry\.replicated\.com/library/retraced" | awk '{print $3}' | xargs sudo docker rmi -f

apt-get remove -y replicated replicated-ui replicated-operator
apt-get purge -y replicated replicated-ui replicated-operator

rm -rf /var/lib/replicated* /etc/replicated* /etc/init/replicated* /etc/init.d/replicated* /etc/default/replicated* /var/log/upstart/replicated* /etc/systemd/system/replicated*

And you'll need to run it with sudo (or otherwise as root) to make the magic happen:

sudo bash purge-replicated.sh

After that, your Replicated install should be completely purged.

Don't forget to reboot!

Just a spoon full of reboot helps the old services go down... in the most delightful way!

I don't know 100% whether or not it matters, but I come from the old school days where if something on your machine is sticking around, you delete it, reboot, and delete it again! (just to be safe)

Anyway, I feel a lot better after a reboot, and things worked for me, and so I advise you to do the same.

sudo shutdown -r now

P.S. Just keep in mind that on an ephemeral instance, such as Amazon AWS EC2, a reboot is essentially the same and starting over from scratch anyway - disk changes are only persisted on mounted volumes.

By AJ ONeal


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