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# Start, stop, or restart the Netdata Agent
When you install the Netdata Agent, the [daemon](/src/daemon/README.md) is
configured to start at boot and stop and restart/shutdown.
You will most often need to _restart_ the Agent to load new or editing configuration files.
[Health configuration](#reload-health-configuration) files are the only exception, as they can be reloaded without restarting
the entire Agent.
Stopping or restarting the Netdata Agent will cause gaps in stored metrics until the `netdata` process initiates
collectors and the database engine.
## Using `systemctl`, `service`, or `init.d`
This is the recommended way to start, stop, or restart the Netdata daemon.
- To **start** Netdata, run `sudo systemctl start netdata`.
- To **stop** Netdata, run `sudo systemctl stop netdata`.
- To **restart** Netdata, run `sudo systemctl restart netdata`.
If the above commands fail, or you know that you're using a non-systemd system, try using the `service` command:
- **service**: `sudo service netdata start`, `sudo service netdata stop`, `sudo service netdata restart`
## Using `netdata`
Use the `netdata` command, typically located at `/usr/sbin/netdata`, to start the Netdata daemon.
```bash
sudo netdata
```
If you start the daemon this way, close it with `sudo killall netdata`.
## Using `netdatacli`
The Netdata Agent also comes with a [CLI tool](/src/cli/README.md) capable of performing shutdowns. Start the Agent back up
using your preferred method listed above.
```bash
sudo netdatacli shutdown-agent
```
## Netdata MSI installations
Netdata provides an installer for Windows using WSL, on those installations by using a Windows terminal (e.g. the Command prompt or Windows Powershell) you can:
- Start Netdata, by running `start-netdata`
- Stop Netdata, by running `stop-netdata`
- Restart Netdata, by running `restart-netdata`
## Reload health configuration
You do not need to restart the Netdata Agent between changes to health configuration files, such as specific health
entities. Instead, use [`netdatacli`](#using-netdatacli) and the `reload-health` option to prevent gaps in metrics
collection.
```bash
sudo netdatacli reload-health
```
If `netdatacli` doesn't work on your system, send a `SIGUSR2` signal to the daemon, which reloads health configuration
without restarting the entire process.
```bash
killall -USR2 netdata
```
## Force stop stalled or unresponsive `netdata` processes
In rare cases, the Netdata Agent may stall or not properly close sockets, preventing a new process from starting. In
these cases, try the following three commands:
```bash
sudo systemctl stop netdata
sudo killall netdata
ps aux| grep netdata
```
The output of `ps aux` should show no `netdata` or associated processes running. You can now start the Netdata Agent
again with `service netdata start`, or the appropriate method for your system.
## Starting Netdata at boot
In the `system` directory you can find scripts and configurations for the
various distros.
### systemd
The installer already installs `netdata.service` if it detects a systemd system.
To install `netdata.service` by hand, run:
```sh
# stop Netdata
killall netdata
# copy netdata.service to systemd
cp system/netdata.service /etc/systemd/system/
# let systemd know there is a new service
systemctl daemon-reload
# enable Netdata at boot
systemctl enable netdata
# start Netdata
systemctl start netdata
```
### init.d
In the system directory you can find `netdata-lsb`. Copy it to the proper place according to your distribution
documentation. For Ubuntu, this can be done via running the following commands as root.
```sh
# copy the Netdata startup file to /etc/init.d
cp system/netdata-lsb /etc/init.d/netdata
# make sure it is executable
chmod +x /etc/init.d/netdata
# enable it
update-rc.d netdata defaults
```
### openrc (gentoo)
In the `system` directory you can find `netdata-openrc`. Copy it to the proper
place according to your distribution documentation.
### CentOS / Red Hat Enterprise Linux
For older versions of RHEL/CentOS that don't have systemd, an init script is included in the system directory. This can
be installed by running the following commands as root.
```sh
# copy the Netdata startup file to /etc/init.d
cp system/netdata-init-d /etc/init.d/netdata
# make sure it is executable
chmod +x /etc/init.d/netdata
# enable it
chkconfig --add netdata
```
_There have been some recent work on the init script, see PR
<https://github.com/netdata/netdata/pull/403>_
### other systems
You can start Netdata by running it from `/etc/rc.local` or equivalent.
|
