1

runsvdir: UNIX init scheme with service supervision from runit is a nice tool to re-run some service(s) if it dies. It monitor a directory for changes, inotify like. It execute scripts in directories forever.

I have a structure like this:

$ tree app
app
├── service
│   ├── run
│   └── supervise
├── replay
│   ├── run
│   └── supervise
└── run
    ├── run
    └── supervise

What I would like to do is something like this, based on this in app/run/run and app/replay/run (I tried the solution in the link, but it fails):

su - user -c screen -S run<<EOF
[...]
# code
EOF

The code have to block/wait to avoid runsvdir to run multiple instances in //.

The code is run as root in a docker container. No systemd there.

I tested many solutions, have defuncts pids, of multiple processes in // that I want to avoid. I miss something maybe obvious.

Any idea?

  • debian 11 until next week ;)
  • runit 2.1.2-41

Note/Edit: it's not mandatory to create run/replay from init. It can be a shell script (bash). The screen's have to be run only one time.

Mévatlavé Kraspek
  • 501

1 Answers1

0

Fixed like this after docker build .:

docker exec -d -u mevatlave cont screen -d -m -S run ./run
docker exec -d -u mevatlave cont screen -d -m -S replay ./replay.sh
docker exec -it -u mevatlave cont screen -x run
Mévatlavé Kraspek
  • 501