2. Quick Start

This section describes the basic steps needed to get Kea up and running. For further details, full customizations, and troubleshooting, see the respective chapters elsewhere in this Kea Administrator Reference Manual (ARM).

2.1. Quick Start Guide Using tarball

Install required runtime and build dependencies. See Build Requirements for details.
Download the Kea source tarball from the ISC.org downloads page or the ISC downloads site.
Extract the tarball. For example:
```
$ tar -xvzf kea-2.2.0.tar.gz
```
Go into the source directory and run the configure script:
```
$ cd kea-2.2.0
$ ./configure [your extra parameters]
```
Build it:
```
$ make
```
Install it (by default it will be placed in /usr/local/, so root privileges are likely required for this step):
```
$ make install
```

2.2. Quick Start Guide Using Native Packages

ISC provides native Alpine, deb, and RPM packages, which make Kea installation much easier. Unless specific compilation options are desired, it is usually easier to install Kea using native packages.

Go to Kea on cloudsmith.io, choose the Kea version, and enter the repository.
Use Set Me Up and follow instructions to add the repository to the local system.
Update system repositories. For example:
$ apt-get update
Kea is split into various packages. The entire list is available on cloudsmith.io or using apt/yum/dnf. For example:
$ apt-cache search isc-kea

Install specific packages:

$ sudo apt-get install isc-kea-dhcp6-server

or all packages:

$ sudo apt-get install isc-kea*

or all packages with a specified version number:

$ sudo apt-get install isc-kea*=1.8.1-isc0000920201106154401

All installed packages should be now available directly; for example:
# kea-dhcp6 -c /path/to/your/kea6/config/file.json
or using systemd:
# systemctl restart isc-kea-dhcp6-server
keactrl is not available in packages as similar functionality is provided by the native systemctl scripts.

2.3. Quick Start Guide for DHCPv4 and DHCPv6 Services

Edit the Kea configuration files, which by default are installed in the [kea-install-dir]/etc/kea/ directory. These are: kea-dhcp4.conf, kea-dhcp6.conf, kea-dhcp-ddns.conf and kea-ctrl-agent.conf, keactrl.conf for DHCPv4 server, DHCPv6 server, D2, Control Agent, and the keactrl script, respectively.
To start the DHCPv4 server in the background, run the following command (as root):
```
# keactrl start -s dhcp4
```
Or run the following command to start the DHCPv6 server:
```
# keactrl start -s dhcp6
```
Note that it is also possible to start all servers simultaneously:
```
# keactrl start
```
Verify that the Kea server(s) is/are running:
```
# keactrl status
```
A server status of “inactive” may indicate a configuration error. Please check the log file (by default named [kea-install-dir]/var/log/kea-dhcp4.log, [kea-install-dir]/var/log/kea-dhcp6.log, [kea-install-dir]/var/log/kea-ddns.log, or [kea-install-dir]/var/log/kea-ctrl-agent.log) for the details of any errors.
If the server has started successfully, test that it is responding to DHCP queries and that the client receives a configuration from the server; for example, use the ISC DHCP client.
To stop running the server(s):
```
# keactrl stop
```

For system-specific instructions, please read the system-specific notes, available in the Kea section of ISC’s Knowledgebase.

The details of keactrl script usage can be found in Managing Kea with keactrl.

Once Kea services are up and running, consider deploying a dashboard solution to monitor running services. For more details, see Monitoring Kea With Stork.

2.4. Running the Kea Servers Directly

The Kea servers can be started directly, without the need to use keactrl or systemctl. To start the DHCPv4 server run the following command:

# kea-dhcp4 -c /path/to/your/kea4/config/file.json

Similarly, to start the DHCPv6 server, run the following command:

# kea-dhcp6 -c /path/to/your/kea6/config/file.json