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Supervisor is a Python package that makes it very easy to manage processes using a simple web interface This was tested on a Raspberry Pi 3B under OpenSUSE LEAP 15.0 64 bit ARM

Assumes user is f4exb and server IP address is 192.168.1.38. Change it to your own.

Install supervisor

sudo zypper in python2-pip
sudo pip install supervisor

This creates /usr/bin/supervisorctl and /usr/bin/supervisord and is only the bare minimum.

Create the service

Create /etc/init.d/supervisord with this content:

#!/bin/sh
### BEGIN INIT INFO
# Provides:        supervisord
# Required-Start:  $network $syslog
# Required-Stop:   $network $syslog
# Default-Start:   2 3 4 5
# Default-Stop:    0 1 6
# Short-Description: Supervisor daemon
### END INIT INFO
# Do 'sudo systemctl daemon-reload' to implement and after each change to this file

. /lib/lsb/init-functions
DAEMON=/usr/bin/supervisord
PIDFILE=/var/run/supervisord.pid
CONF_FILE=/etc/supervisor/supervisord.conf
test -x $DAEMON || exit 5
test -f ${CONF_FILE} || exit 5

case $1 in
    start)
        echo -n "Starting supervisor service" "supervisord"
        /sbin/startproc $DAEMON -n -c ${CONF_FILE}
        rc_status -v
        ;;
    stop)
        echo -n "Stopping supervisor service" "supervisord"
        /sbin/killproc -TERM $DAEMON
        rc_status -v
        ;;
    restart|force-reload)
        $0 stop && sleep 2 && $0 start
        rc_status
        ;;
    status)
        /sbin/checkproc $DAEMON
        rc_status -v
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|force-reload|status}"
        exit2
        ;;
esac

give it execution permission:

sudo chmod +x /etc/init.d/supervisord

Setup the service

sudo mkdir /var/log/supervisor
sudo systemctl enable supervisord

Configuration:

sudo mkdir -p /etc/supervisor/conf.d

Create /etc/supervisor/supervisord.conf with this content:

; supervisor config file

[unix_http_server]
file=/var/run/supervisor.sock   ; (the path to the socket file)
chmod=0700                       ; sockef file mode (default 0700)

[supervisord]
user=root
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)
logfile_maxbytes = 10MB
logfile_backups = 3
loglevel = info

[inet_http_server]
port = *:9001
;username = admin
;password = admin

[supervisorctl]
serverurl=unix:///var/run/supervisor.sock ; use a unix:// URL  for a unix socket

; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

; The [include] section can just contain the "files" setting.  This
; setting can list multiple files (separated by whitespace or
; newlines).  It can also contain wildcards.  The filenames are
; interpreted as relative to this file.  Included files *cannot*
; include files themselves.

[include]
files = /etc/supervisor/conf.d/sdrangelsrv.conf

Config file to run sdrangel

Assumes SDRangel is compiled from source and installed in /opt/install/sdrangel

mkdir ~/log

Create /etc/supervisor/conf.d/sdrangelsrv.conf with this content:

/!\ Pay attention to environment. You need all variables for pulseaudio dependency. Adjust -a, HOSTNAME, USER, HOME, LOGNAME, PATH according to your network interface address, user and host

[program:sdrangelsrv]
command = /opt/install/sdrangel/bin/sdrangelsrv -a 192.168.1.38
process_name = sdrangelsrv
user = f4exb
stopsignal = INT
autostart = false
autorestart = false
environment =
    HOSTTYPE=aarch64,
    HOSTNAME=rpi3p01,
    AUDIODRIVER=pulseaudio,
    ALSA_CONFIG_PATH="/etc/alsa-pulse.conf",
    MACHTYPE="aarch64-suse-linux",
    QEMU_AUDIO_DRV=pa,
    USER=f4exb,
    HOME="/home/f4exb",
    OSTYPE=linux,
    XDG_DATA_DIRS="/usr/share",
    SHELL="/bin/bash",
    PYTHONSTARTUP="/etc/pythonstart",
    LOGNAME=f4exb,
    DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus",
    XDG_RUNTIME_DIR="/run/user/1000",
    XDG_CONFIG_DIRS="/etc/xdg",
    PATH="/home/f4exb/bin:/usr/local/bin:/usr/bin:/bin",
    SDL_AUDIODRIVER=pulse,
    CPU=aarch64
redirect_stderr = true
stdout_logfile = /home/f4exb/log/sdrangelsrv.log
stdout_logfile_maxbytes = 10MB
stdout_logfile_backups = 3
loglevel = debug

Running

You can access supervisor interface at http:\\192.168.1.38:9001

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