semantics and some syntax but it does not allow for abitrary Python function
for commenting YAML code.Jinja templating provides vast flexibility and power when building Salt sls In the first article on installing Salt we ran a few simple commands, including a command to install Nginx.
common settings within a company or organization. to the MAJOR.MINOR.PATCH format.Formula versions are tracked using Git tags as well as the A smoke-test for invalid Jinja, invalid YAML, or an invalid Salt state the syntax can be verbose and visually noisy.Once Jinja use within an sls file becomes slightly complicated -- long chains flexibility and reusability of a state.An obvious and common example of this is platform-specific package names and example, the following macro could be used to write a php.ini config file:Separate data that a state uses from the state itself to increases the also created a default vhost.
-- it can be hard-coded at the top of the state, it can come from an external Under tests directory are located resources for test execution.. Test target executes “smoke test” implemented by tests/run_tests.sh capable to fetch dependencies in python virtual environment by executing salt-call state.show_sls with provided tests/pillar data.. This must be processed using Mako.# Provide a description or explanation that did not fit within the state# Update the application's last-deployed timestamp.# This is a workaround until Bob configures Jenkins to automate RPM# FIXME: Joe needs this to run on Windows by next quarter. A central collection of formula repositories for SaltStack. settings along with the states themselves and keep overrides and sensitive possible).Below are guidelines and examples of how Jinja can be used effectively.High-level knowledge of how Salt states are compiled and run is useful when
the reusability of this file by keeping unrelated tasks from getting coupled Remember that both State files and Pillar files can easily call out to Salt
The Python renderer must simply return the correct Sign up for Infrastructure as a Newsletter. tasks.All official Salt Formulas are found as separate Git repositories in the
#salt-formulas @ irc.freenode.net Use this IRC channel in case of any questions or feedback which is always welcome.
If you have a large list of packages to install this is the most efficient way to install them.Again, you can apply this Formula to your server like this:OK, now we’re down to our last example of installing git. Use vertical whitespace to visually separate different Team members can manage file. Our mailing list can be found Salt is an open-source configuration management and remote execution tool.
writing states.Whatever the Jinja step produces must be valid YAML.Highstate can be thought of as a human-friendly data structure; easy to write And they can be directly serialized into YAML which Install any necessary dependencies and configure GitFShttps://github.com/saltstack-formulas/apache-formulahttps://github.com/saltstack-formulas/memcached-formula# Use the watch_in requisite to cause the apache service state to reload# apache whenever the my-example-com-vhost state changes.# Deploy the stable master branch unless version overridden by passingwhen compiling the human-friendly highstate structure into the Use a unique and permanent identifier for the state ID and reserve YAML allows comments at varying indentation levels. following ways.One design goal of Salt's GitFS fileserver backend was to facilitate reusable
Dictionaries are also DigitalOcean makes it simple to launch in the cloud and scale up as you grow – whether you’re running one virtual machine or ten thousand. itself is simple and legible, the data is separate and also simple and legible. using a dictionary allows for easily merging and overriding static values
Pillar would replace the Protecting Expansion of Content with Special CharactersWhen templating keep in mind that YAML does have special characters for It is a good practice to It is a As a rule of thumb, if it is hard to may be used and represented.An obvious pattern and one used heavily in Salt Formulas is extracting Formula directly from a Top File.For example the easiest way to set up an OpenStack deployment on a single data in Pillar; see the Some Formula perform completely standalone installations that are not
creating mini templates that can be reused and rendered on demand. machine-friendly lowstate structure# Start with a high-level description of the current sls file.# Provide details on why an unusual choice was made. Add tips and tricks to the repository wiki.The best way to create new Formula repositories for now is to create a Parametrization (discussed below) and variables are run via Jinja do not respect Salt's dry-run mode (A common use for Jinja in Salt states is to gather information about the Send fixes and be cobbled together from multiple sources (local files, remote Pillar, database it can come from a database query. altering the state at all!Jinja is not Python. of where the data comes from. Production data will vary from development data salt.cloud.
Typically the port will be the standard port 80 for HTTP connections, or port 443 for HTTPS… pattern which once again increases flexibility and reusability for state files.This is useful when software or configuration files is installed to The message is mainly for informational purposes, and an AH00558 error will not prevent Apache…An Apache AH00072: make_sock: could not bind to address error message is generated when there is another process listening on the same port that Apache is configured to use.
Organizing such data as a As a rule of thumb, if it is hard to read it will be hard For example, the following
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