SaltStack Training Chennai

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 SaltStack Training

 What is  SaltStack ?

Salt is a new approach to infrastructure management. Easy enough to get running in minutes, scalable enough to manage tens of thousands of servers, and fast enough to communicate with them in seconds.

Salt delivers a dynamic communication bus for instrastructures that can be used for orchestration, remote execution, configuration management and much more.

Salt is a software application in which clients, called “minions” can be commanded and controlled from a central command server called a “master”.

Commands are normally issued to the minions (via the master) by calling a client script simply called, ‘salt’.

Salt features a pluggable transport system to issue commands from a master to minions. The default transport is ZeroMQ.

 SaltStack

Components of Salt Stack

Salt is at its core a Remote Execution solution. Running pre-defined or arbitrary commands on remote hosts. Salt functions on a master/minion topology. A master server acts as a central control bus for the clients (called minions), and the minions connect back to the master.  SaltStack Training Chennai.

 

Salt Master

Turning on the Salt master is easy, just turn it on! The default configuration is suitable for the vast majority of installations. The Salt master can be controlled with systemd.

 

                             # systemctl start salt-master

The Salt master can also be started in the foreground in debug mode, thus greatly increasing the command output:

                            # salt-master -l debug

The Salt master needs to bind to 2 TCP network ports on the system, these ports are 4505 and 4506.

Salt Minion

The Salt Minion can operate with or without a Salt Master. This wiki assumes that the minion will be connected to the master.

The Salt minion only needs to be aware of one piece of information to run, the network location of the master. By default the minion will look for the DNS name salt for the master, making the easiest approach to set internal DNS to resolve the name salt back to the Salt Master IP. Otherwise the minion configuration file will need to be edited, edit the configuration option master to point to the DNS name or the IP of the Salt Master.

                            /etc/salt/minion

                            master: saltmaster.example.com

Now that the master can be found, start the minion in the same way as the master; with systemd.

                        # systemctl start salt-minion

Or in debug mode

                        # salt-minion -l debug

Salt Key

Salt authenticates minion using public key encryption and authentication. For a minion to start accepting commands from the master the minion keys need to be accepted. the salt-key command is used to manage all of the keys on the master. To list the keys that are on the master run salt-key list command:

                      # salt-key -L

The keys that have been rejected, accepted and pending acceptance are listed. To accept a minion:

                    # salt-key -a minion.example.com

Or you can accept all keys at once with :

                   # salt-key -A

Salt Cloud

Salt can also be used to provision cloud servers on most major cloud providers. In order to connect to these providers, additional dependencies may be required.

 

 

 

 

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 SaltStack Training Also available across India in Bangalore, Pune, Hyderabad, Mumbai, Kolkata, Ahmedabad, Delhi, Gurgon, Noida, Kochin, Tirvandram, Goa, Vizag, Mysore,Coimbatore, Madurai, Trichy, Guwahati

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