======= FreeBSD ======= Salt was added to the FreeBSD ports tree Dec 26th, 2011 by Christer Edwards . It has been tested on FreeBSD 7.4, 8.2 and 9.0 releases. Salt is dependent on the following additional ports. These will be installed as dependencies of the ``sysutils/salt`` port. :: /devel/py-yaml /devel/py-pyzmq /devel/py-Jinja2 /devel/py-msgpack /security/py-pycrypto /security/py-m2crypto Installation ============ To install Salt from the FreeBSD ports tree, use the command: .. code-block:: bash cd /usr/ports/sysutils/salt && make install clean Once the port is installed you'll need to make a few configuration changes. These include defining the IP to bind to (optional), and some configuration path changes to make salt fit more natively into the FreeBSD filesystem tree. Configuration ============= In the sections below I'll outline configuration options for both the Salt Master and Salt Minions. The Salt port installs two sample configuration files, ``salt/master.sample`` and ``salt/minion.sample`` (these should be installed in ``/usr/local/etc/``, unless you use a different ``%%PREFIX%%``). You'll need to copy these .sample files into place and make a few edits. First, copy them into place as seen here: .. code-block:: bash cp /usr/local/etc/salt/master.sample /usr/local/etc/salt/master cp /usr/local/etc/salt/minion.sample /usr/local/etc/salt/minion Note: You'll only need to copy the config for the service you're going to run. Once you've copied the config into place you'll need to make changes specific to your setup. Below I'll outline suggested configuration changes to the Master, after which I'll outline configuring the Minion. Master Configuration ==================== This section outlines configuration of a Salt Master, which is used to control other machines known as "minions" (see "Minion Configuration" for instructions on configuring a minion). This will outline IP configuration, and a few key configuration paths. **Interface** By default the Salt master listens on ports 4505 and 4506 on all interfaces (0.0.0.0). If you have a need to bind Salt to a specific IP, redefine the "interface" directive as seen here. .. code-block:: diff - #interface: 0.0.0.0 + interface: 10.0.0.1 **rc.conf** Last but not least you'll need to activate the Salt Master in your rc.conf file. Using your favorite editor, open ``/etc/rc.conf`` or ``/etc/rc.conf.local`` and add this line. .. code-block:: diff + salt_master_enable="YES" **Start the Master** Once you've completed all of these steps you're ready to start your Salt Master. The Salt port installs an rc script which should be used to manage your Salt Master. You should be able to start your Salt Master now using the command seen here: .. code-block:: bash service salt_master start If your Salt Master doesn't start successfully, go back through each step and see if anything was missed. Salt doesn't take much configuration (part of its beauty!), and errors are usually simple mistakes. Minion Configuration ==================== Configuring a Salt Minion is surprisingly simple. Unless you have a real need for customizing your minion configuration (which there are plenty of options if you are so inclined!), there is one simple directive that needs to be updated. That option is the location of the master. By default a Salt Minion will try to connect to the dns name "salt". If you have the ability to update DNS records for your domain you might create an A or CNAME record for "salt" that points to your Salt Master. If you are able to do this you likely can do without any minion configuration at all. If you are not able to update DNS, you'll simply need to update one entry in the configuration file. Using your favorite editor, open the minion configuration file and update the "master" entry as seen here. .. code-block:: diff - #master: salt + master: 10.0.0.1 Simply update the master directive to the IP or hostname of your Salt Master. Save your changes and you're ready to start your Salt Minion. Advanced configuration options are covered in another chapter. **rc.conf** Before you're able to start the Salt Minion you'll need to update your rc.conf file. Using your favorite editor open ``/etc/rc.conf`` or ``/etc/rc.conf.local`` and add this line. .. code-block:: diff + salt_minion_enable="YES" Once you've completed all of these steps you're ready to start your Salt Minion. The Salt port installs an *rc* script which should be used to manage your Salt Minion. You should be able to start your Salt Minion now using the command seen here. .. code-block:: bash service salt_minion start If your Salt Minion doesn't start successfully, go back through each step and see if anything was missed. Salt doesn't take much configuration (part of its beauty!), and errors are usually simple mistakes. Tying It All Together ===================== If you've successfully completed each of the steps above you should have a running Salt Master and a running Salt Minion. The Minion should be configured to point to the Master. To verify that there is communication flowing between the Minion and Master we'll run a few initial ``salt`` commands. These commands will validate the Minions RSA encryption key, and then send a test command to the Minion to ensure that commands and responses are flowing as expected. **Key Management** Salt uses AES encryption for all communication between the Master and the Minion. This ensures that the commands you send to your Minions (your cloud) can not be tampered with, and that communication between Master and Minion is only done through trusted, accepted keys. Before you'll be able to do any remote execution or state management you'll need to accept any pending keys on the Master. Run the ``salt-key`` command to list the keys known to the Salt Master: .. code-block:: bash [root@master ~]# salt-key -L Unaccepted Keys: alpha bravo charlie delta Accepted Keys: This example shows that the Salt Master is aware of four Minions, but none of the keys have been accepted. To accept the keys and allow the Minions to be controlled by the Master, again use the ``salt-key`` command: .. code-block:: bash [root@master ~]# salt-key -A [root@master ~]# salt-key -L Unaccepted Keys: Accepted Keys: alpha bravo charlie delta The ``salt-key`` command allows for signing keys individually or in bulk. The example above, using ``-A`` bulk-accepts all pending keys. To accept keys individually use the lowercase of the same option, ``-a keyname``. Sending Commands ================ Everything should be set for you to begin remote management of your Minions. Whether you have a few or a few-dozen, Salt can help you manage them easily! For final verification, send a test function from your Salt Master to your minions. If all of your minions are properly communicating with your Master, you should "True" responses from each of them. See the example below to send the ``test.ping`` remote command. :: [root@master ~]# salt 'alpha' test.ping {'alpha': True} Where Do I Go From Here ======================= Congratulations! You've successfully configured your first Salt Minions and are able to send remote commands. I'm sure you're eager to learn more about what Salt can do. Depending on the primary way you want to manage your machines you may either want to visit the section regarding Salt States, or the section on Modules.