Questions[runit](server)

I installed runit-2.1.2 on my ubuntu box,

And, I Created very simple streaming service as below,

mkdir -p /etc/sv/streaming/
echo 'echo "streaming" >> /var/log/streaming.log' > /etc/sv/streaming/run

Then, created symlink to /etc/service/streaming,

ln -s /etc/sv/streaming /etc/service/streaming

As, I can see below, symlink is created,

root@moby:/# ll /etc/service/streaming
lrwxrwxrwx 1 root root 17 Dec  2 00:27 /etc/service/streaming -> /etc/sv/streaming/

Waited 5 secs, nothing happens.

I also tried manually as below,

root@moby:/# sv status /etc/service/streaming     
warning: /etc/service/streaming: unable to open supervise/ok: file does not exist

I'm using ubuntu 16.04

root@moby:/# cat /etc/*release | grep RELEASE
DISTRIB_RELEASE=16.04

I feel like runit is not running at all.

root@moby:/# ps -ef | grep runsvdir
root      1976     7  0 00:58 ?        00:00:00 grep --color=auto runsvdir

I don't know the script to start runit either,

root@moby:/# service runit start
runit: unrecognized service

or

root@moby:/# service sv status
sv: unrecognized service

Can runit users help me know what's going on here?

Reference

http://smarden.org/runit/install.html

searchd (Sphinx) run file:

#!/bin/sh
set -e

APP_PATH=/srv/application
TARGET_USER=user
exec chpst -u $TARGET_USER /usr/bin/searchd --pidfile --nodetach --config $APP_PATH/current/config/production.sphinx.conf 

tail /var/log/sphinx/current

2014-06-07_18:13:56.87885 precached 9 indexes in 0.497 sec
2014-06-07_18:13:57.13740 precached 9 indexes in 0.497 sec
2014-06-07_18:13:57.88113 precached 9 indexes in 0.497 sec
2014-06-07_18:13:57.89167 precached 9 indexes in 0.497 sec
2014-06-07_18:13:59.75555 precached 9 indexes in 0.497 sec
2014-06-07_18:13:59.81554 precached 9 indexes in 0.497 sec
2014-06-07_18:14:00.33466 precached 9 indexes in 0.497 sec
... it continues to write the same line until sv stop sphinx ...

Everything works fine, seachd starts and responds to the queries. But how to make logs to be less repetitive? When I start Sphinx manually it prints the "precached 9 indexes" just once.

I want to have a custom "stop" script runit (runsv) to execute when having to stop/restart the process. Currently it simply kills the process, then runs the "finish" script. But in my case, my process spawns dynamically child processes, so instead of simple kill, I need a "killtree" to get rid of them. How do I do that?

I know it should be done through the control options of runit but from reading the docs its not really clear to me how the stop script should be named :(

http://smarden.org/runit/runsv.8.html

I'm pretty new to runit. I installed it on a Ubuntu host.

What I did:

1) created a dir testrun in /etc/sv

2) created a script run in /etc/sv/testrun/run, the script content:

#! /bin/bash
exec /root/FP/annotate-output python /root/FP/test.py | logger -t svtest

3) If I call directly /etc/sv/testrun/run it executes successfully

4) I run sv start testrun (or sv run testrun, sv restart testrun), all of them end up with the same error msg:

fail: sv: unable to change to service directory: file does not exist

Any ideas what am I doing wrong? I'm new to runit and base all my actions on the information found here: http://smarden.org/runit/

As a happy user of runit - I am curious if it is possible to send a signal to the main process (or similar) telling it to look now at the service directory? the current behaviour is < 5 seconds (seems much faster most of the time) between scans for new services - but I thought it would be nice if I could also tell it (in cases where the 5 second worst case is annoying - rare - but annoying).