Running ntopng as a Daemon¶
Ntopng can be run in daemon mode on unix systems and optionally be run automatically on system startup. Daemon execution and status are controlled using the script /etc/init.d/ntopng
. The script is installed automatically on unix systems as it is part of any standard ntopng installation procedure. Newer systems that support systemd use systemctl
to control daemon execution an status.
Daemon Configuration File¶
Ntopng configuration file is required when running it as a daemon. The configuration file has to be named ntopng.conf
and must be placed under /etc/ntopng/
. The interested reader can find above and example of a configuration file. A default configuration file is created by default when installing ntopng from any binary package.
Automatic Daemon Startup on Boot¶
In order to launch ntopng daemon automatically on system startup, an empty file ntopng.start must be created in the same directory of the configuration files. Therefore, the directory will contain both the configuration and the startup files
root@devel:/etc/ntopng$ ls -lha
total 28K
drwxr-xr-x 2 root root 4.0K Mar 17 15:44 .
drwxr-xr-x 117 root root 12K Mar 11 12:16 ..
-rw-r--r-- 1 root root 211 Mar 15 17:54 ntopng.conf
-rw-r--r-- 1 root root 0 Mar 17 15:44 ntopng.start
The existence of the ntopng.start
file is no longer required on systems that have systemd. On those systems, automatic ntopng daemon startup is controlled by enabling/disabling the ntopng service as
systemctl enable ntopng
systemctl disable ntopng
Daemon Control¶
ntopng daemon is controlled with the script /etc/init.d/ntopng
. The script accepts different options. Calling the script without options yields the following brief help
/etc/init.d/ntopng
Usage: /etc/init.d/ntopng {start|force-start|stop|restart|status}
On unix systems that support systemd, the demon can only be controlled with systemctl
. All the standard options are accepted. The options and the usage of the daemon control script are discussed below.
start¶
This option is used to start the ntopng daemon
/etc/init.d/ntopng start
* Starting ntopng
.done.
On unix systems with systemd the daemon is started as
systemctl start ntopng
force-start¶
Equivalent to start. Not available on unix systems with systemd.
stop¶
This option is used to stop an ntopng daemon instance. For example
/etc/init.d/ntopng stop
* Stopping ntopng
.done.
To stop the daemon on a unix system with systemd use
systemctl stop ntopng
restart¶
This option causes the restart of a daemon associated to a given interface, e.g.,
/etc/init.d/ntopng restart
* Stopping ntopng
* Starting ntopng
.done.
To restart the daemon on a unix system type
systemctl restart ntopng
status¶
This options prints the status of a daemon associated to a given interface, e.g.,
/etc/init.d/ntopng status
ntopng running as 5623
To print the status of the ntopng daemon on a unix system with systemd type
systemctl status ntopng