FreeBSD custom service prints stdout to shell-CodePudding

How do I stop a custom FreeBSD service from printing stdout to the shell?

This is what I've got

#!/bin/sh
# $FreeBSD$

# PROVIDE: telegraf
# REQUIRE: DAEMON NETWORKING
# BEFORE: LOGIN
# KEYWORD: shutdown

# Add the following lines to /etc/rc.conf to enable telegrafb:
# telegraf_enable="YES"
#
# telegraf_enable (bool): Set to YES to enable telegraf
# Default: NO
# telegraf_conf (str): telegraf configuration file
# Default: ${PREFIX}/etc/telegraf.conf
# telegraf_flags (str): Extra flags passed to telegraf

. /etc/rc.subr

name="telegraf"
rcvar=telegraf_enable


load_rc_config "${name}"
: ${telegraf_enable:="YES"}
: ${telegraf_flags:="-quiet"}
: ${telegraf_conf:="/usr/local/telegraf-1.23.4_freebsd_amd64/telegraf.conf"}

pidfile="/var/run/${name}.pid"
command=/usr/sbin/daemon
command_args="-crP ${pidfile} /usr/local/telegraf-1.23.4_freebsd_amd64/${name} ${telegraf_flags} -config=${telegraf_conf} >> /var/log/telegraf.log 2>&1"
export TELEGRAF_CONFIG_PATH="/usr/local/telegraf-1.23.4_freebsd_amd64/telegraf.conf"



start_precmd="${name}_prestart"
start_cmd="${name}_start"

telegraf_prestart() {
# Have to empty rc_flags so they don't get passed to daemon(8)
  touch $pidfile
  rc_flags=""
}

telegraf_start() {
  ${command} ${command_args} ${rc_arg}
}

run_rc_command "$1"

This is what it does. When I crtl-c to get my shell back, the service dies.

freenas% sudo service telegraf start
2022-09-10T06:51:27Z I! Using config file: /etc/telegraf/telegraf.conf
2022-09-10T06:51:27Z I! Starting Telegraf 1.23.4
2022-09-10T06:51:27Z I! Loaded inputs: cpu disk diskio kernel mem processes swap system
2022-09-10T06:51:27Z I! Loaded aggregators: 
2022-09-10T06:51:27Z I! Loaded processors: 
2022-09-10T06:51:27Z I! Loaded outputs: prometheus_client
2022-09-10T06:51:27Z I! Tags enabled: host=freenas.local
2022-09-10T06:51:27Z I! [agent] Config: Interval:10s, Quiet:false, Hostname:"freenas.local", Flush Interval:10s
2022-09-10T06:51:27Z I! [outputs.prometheus_client] Listening on http://[::]:9100/metrics
^C2022-09-10T06:51:28Z I! [agent] Hang on, flushing any cached metrics before shutdown
2022-09-10T06:51:28Z I! [agent] Stopping running outputs

I'm sure this is probably something stupid, so I appreciate the help in advance.

CodePudding user response：

In this block of code:

telegraf_start() {
  ${command} ${command_args} ${rc_arg}
}

you should change it to become:

telegraf_start() {
  ${command} ${command_args} ${rc_arg} >>/path/to/log_file 2>/path/to/err_file
}

Also you can consider end this line with & to put the process in background

CodePudding user response：

Make sure you setup the symlink properly and call your init script and not the executable directly.

whoops.

All works as it should now.