Installation, configuration and use of process daemon supervisor in Linux

# epel source yum install epel-release
# Install supervisor
yum install -y supervisor
# Start automatically at boot time systemctl enable supervisord
# Start the supervisord service systemctl start supervisord 
Bash

# Main configuration file /etc/supervisord.conf
# Run the program configuration folder /etc/supervisord.d/
Bash

systemctl stop supervisord
systemctl start supervisord
systemctl status supervisord
# Reload the configuration file without affecting the running program systemctl reload supervisord
systemctl restart supervisord
Bash

<?php
try {
  $a = file_get_contents('./times.json');
} catch (Exception $e) {
  $a = 0;
}
$a++;
file_put_contents('./times.json', $a);
echo date('Ymd H:i:s') . " This is the {$a}th start!!!!" . PHP_EOL;

$i = 1;
while (1) {
  echo date('Ymd H:i:s') . "{$i}th output" . PHP_EOL;
  $i++;
  sleep(5);
}

[program:test]
directory=/home/wwwroot/test.cc
command=php test.php
autostart=true
autorestart=true
stderr_logfile=/home/wwwroot/test.cc/log/error.log
stdout_logfile=/home/wwwroot/test.cc/log/out.log
Ini

;[program:theprogramname]
;command=/bin/cat ; the program (relative uses PATH, can take args)
;process_name=%(program_name)s ; process_name expr (default %(program_name)s)
;numprocs=1 ; number of processes copies to start (def 1)
;directory=/tmp ; directory to cwd to before exec (def no cwd)
;umask=022 ; umask for process (default None)
;priority=999 ; the relative start priority (default 999)
;autostart=true ; start at supervisord start (default: true)
;autorestart=true ; retstart at unexpected quit (default: true)
;startsecs=10 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
;stopsignal=QUIT ; signal used to kill process (default TERM)
;stopwaitsecs=10 ; max num secs to wait for b4 SIGKILL (default 10)
;user=chrism ; setuid to this UNIX account to run the program
;redirect_stderr=true ; redirect proc stderr to stdout (default false)
;stdout_logfile=/a/path ; stdout log path, NONE for none; default AUTO
;stdout_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB)
;stdout_logfile_backups=10 ; # of stdout logfile backups (default 10)
;stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
;stdout_events_enabled=false ; emit events on stdout writes (default false)
;stderr_logfile=/a/path ; stderr log path, NONE for none; default AUTO
;stderr_logfile_maxbytes=1MB ; max # logfile bytes b4 rotation (default 50MB)
;stderr_logfile_backups=10 ; # of stderr logfile backups (default 10)
;stderr_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
;stderr_events_enabled=false ; emit events on stderr writes (default false)
;environment=A=1,B=2 ; process environment additions (def no adds)
;serverurl=AUTO ; override serverurl computation (childutils)
Ini

systemctl restart supervisord
systemctl reload supervisord
Bash

[root@localhost test.cc]# ps -aux | grep test.php
root 22277 0.0 0.6 269732 12124 ? S 17:38 0:00 php test.php
root 22335 0.0 0.0 112712 996 pts/0 S+ 17:41 0:00 grep --color=auto test.php
Bash