CLI Example: salt '*' grains.append key val salt.modules.grains.delval (key) ¶ New in version 0.17.0. As an example, we'll implement a simple caps filter to capitalize all of the letters in a string. saltstack: archive.extracted template jinja. ext, 'do'): env_args ['extensions']. Finally, we use the { {}} to output the newly formed list. In general, you should try to keep your Salt states as simple as possible. Ansible by default uses Jinja2 Templates to call its variables in its playbooks. The Problem: Jinja Gone Wild¶ It is often said in the Salt community that "Jinja is not a Programming Language". One of the most common uses of Jinja is to insert conditional statements into Salt pillar files. Jinja uses various delimiters in the template strings. A single string of text or a list of strings may be appended. salt.utils.dictupdate.append_dict_key_value - a function (and Jinja filter) to append to a list nested (deep) in a dictionary without having to worry if all the nested keys (or the list itself) actually exist Unfortunately, it can lead to code that looks like the following. We will need to make some changes based on variable information, so this file will have to be a Jinja template. While from the CLI perspective salt-sproxy looks like it works similar to the usual salt command, in fact, they work fundamentally different. There's an even older saying known as Maslow's hammer. Salt includes the Jinja2 templating engine which can be used in Salt state files, Salt pillar files, and other files managed by Salt. Why did Spock ask McCoy to help him reconfigure a torpedo? We can define our own filters for use in our Jinja templates. One of the most common uses of Jinja is to insert conditional statements into Salt … By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. SaltStack also has the concept of pillars. Once the file is saved, and the node checks in the with manager, the local.zeek file will be updated … What ocean geography causes bodies to "disappear"? SaltCacheLoader (opts, saltenv, pillar_rend = context. {# {{ var }} #} All Rights Reserved, SaltStack Inc. | Privacy Policy. This example checks Salt grain values to set OS specific Salt pillar keys. See the full list in the Jinja docs. Pwned by a website I never subscribed to - How do they have my e-mail address? I’m not sure what the philosophy is here – it looks to me like each level is just a list of key/value pairs. utils. If you need to repeat those checks in multiple states, you can try the Jinja macro from the saltstack-formulas GitHub community.. Injecting warnings. Out of the box, Atom understands *.sls files as YAML. How do I know whether tar really pass XZ_OPT to xz? How is a person residing abroad subject to US law? If you find yourself writing complex Jinja, you should consider breaking a task into multiple Salt states, or writing a custom Salt execution module for the task (this is easier than it sounds, especially if you know some Python!). This makes sense; salt.renderers.jinja is in the salt.renderers namespace, while the modules you have access to from the CLI are in the salt.modules namespace. The text will not be appended again if it already exists in the file. Examples: In order to remove a grain from the grains file, use the grains.delval function: Copy. SaltStack has some pretty cool git integration.Unfortunately it also has quite a few bugs, especially when using gitfs for pillars.. The "saltey" way of doing this is typically in a map.jinja file. Note Jinja already has an upper filter that does this, and a capitalize filter that capitalizes the first character and lowercases the rest. Jinja kennt weder Yaml noch sonst eine Programmiersprache oder Konvention innerhalb einer verarbeiteten Datei. The libsaltcli.jinja macro. The default renderer in salt is a Python templating engine called Jinja. rev 2021.3.11.38760, The best answers are voted up and rise to the top, DevOps Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, State of the Stack: a new quarterly update on community and product, Level Up: Mastering statistics with Python – part 5. You can use the Ansible-specific filters documented here to manipulate your data, or use any of the standard filters shipped with Jinja2 - see the list of built-in filters in the official Jinja2 template documentation. (2) Add a filter to convert a string into a variable name. That’s like writing a C program using macros all over the place. Why do translations refer to the original language with a definite article, e.g. To learn more, see our tips on writing great answers. (1) Allow variable expansion. For example: The name and data structure of the grain should be designed to support many platforms, operating systems or applications. State files are objects, and each section of the state file builds up the base object into a logical whole unit. Allows you to append to a list nested (deep) in a dictionary without having to worry if all the nested keys (or the list itself) actually exist. Why is no activation function needed for the output layer of a neural network for regression? What is the point in delaying the signing of legislation that the President supports? this would create a /tmp/append.txt: os: Arch - rolling salt: 0.16.0-2561-g8ab65b2 This could be usefull to create a config file based on multiple smaller jinja files use case: haproxy config split: header.cfg; global.cfg < jinja with grains.pillars about haproxy server; defaults.cfg < jinja pillar items with default options for haproxy server Jinja2 essentially needs two source ingredients, template and data that will be used to render the final document. You can call Salt execution functions from Jinja to get real-time data from the system. salt.states.file.append (name, text=None, makedirs=False, source=None, source_hash=None, __env__='base', template='jinja', sources=None, source_hashes=None, defaults=None, context=None) ¶ Ensure that some text appears at the end of a file. Missing keys will automatically be created if they do not exist. Atom. Constructing Dependencies from a Pillar in Saltstack. import jinja2 from jinja2 import Template records = [{'a':1,'b':1, 'c':1},{'a':1,'b':1, 'c':1}, {'a':2,'b':1, 'c':1}, {'a':3,'b':1, 'c':1}] t = jinja2.Template(""" {% set record_info = dict() %} {% for item in records %} {% set key = str(item['a'])+str(item['b'])+str(item['c']) %} {% if key in record_info %} {% set record_info.key += 1 %} {% else %} {% set record_info.key = 1 %} {% endif %} {% endfor %} {{record_info}}""") But Salt uses this template language as its core programming logic. Can't get simple uneven reflection map working. I have a several pillars and I am trying to merge them in the same jinja variable. You have to iterate over the list, and then for each item in the list (each of which is a dictionary with a single key) you have to pull out the key/value pair and use it. Das hat zur Folge, dass Jinja das übliche Kommentarzeichen # ignoriert. Salt git integration without gitfs. In which order does Windows Explorer sort folders when sorting the results of the search by size? Why don't currents due to revolution of electrons add up? Since we aren’t changing @load-sigs or redef , then we do not need to add them here. How to add multiple jvm options in a saltstack jinja? Loops are useful for creating users and folders in Salt states. The text will not be appended if it already exists in the file. Finally, you can create new filters yourself! salt.states.file.append (name, text = None, makedirs = False, source = None, source_hash = None, template = 'jinja', sources = None, source_hashes = None, defaults = None, context = None, ignore_whitespace = True) ¶ Ensure that some text appears at the end of a file. Using the Roster Interface¶. Jinja templating logic. Renderers in Salt By default, every salt state file is passed through a renderer before being processed by salt. Thanks for contributing an answer to DevOps Stack Exchange! Jinja is a reliable hammer, and so is the maps.jinja idiom. Plus, you could install atom-jinja2 and manually switch a file grammar to YAML (Jinja Templates) by pressing Ctrl+Shift+L.. For better results, you can install both atom-salt and atom-jinja2.Just click Edit -> Preferences -> Install, search for atom-salt or atom-jinja and install them. ext, 'with_'): env_args ['extensions']. Often it is necessary to trigger conditional warnings from states, to remind yourself (or others) to take some action (upgrade Salt, rewrite a state, etc. Salt includes the Jinja2 templating engine which can be used in Salt state files, Salt pillar files, and other files managed by Salt. salt myminion grains.append my_items item3 . Through Jinja2, we can use python to make a new list, with the value we want and append the previous list to it. Because many distros have different package names, you can use the os grain to set platform specific paths, package names, and other values. Sie können mit # {{ var }} nicht verhindern, dass die Variable ersetzt wird.. Verwenden Sie stattdessen Kommentare innerhalb der Jinja-Klammern. How to examine Jinja output in Saltstack? This is why automation frameworks like Ansible or Salt provide many extra filters that cover wide range of scenarios. The text will not be appended if it already exists in the file. Jinja2 does not like that when it renders as it complains about the extra brackets existing. Three questions on (finding) permanent positions in France. DevOps Stack Exchange is a question and answer site for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure. Python language instead of default Jinja2 + YAML to get things done: #!py def run(): config = {} cpus = '' for x in range(__grains__['num_cpus'] - 5, __grains__['num_cpus'] - 1 ): cpus += ',' + str(x) config['echo ' + str(cpus)] = { 'cmd': [ 'run' ] } return config If you want the host list to be an actual string, then you will need to quote it. Salt lets you use Jinja to access minion configuration values, grains and Salt pillar data, and call Salt execution modules. This is in additional to the standard control structures and Python data types that are already available in Jinja. I've never tried merging twice though, so give it a try. loader = salt. Salt modules expand Salt state files, using the Jinja language to set variables and call functions. append ('jinja2.ext.with_') if hasattr (jinja2. If you use `salt '*' pillar.items --out=json` you can see it more clearly. Is it okay to give students advice on managing academic work? The default delimiter for the keys is ':', however, with the delimiter-parameter, a different delimiter can be specified. So you can't use iteritems, because it's a list. {% set sys_disks = salt['partition.get_block_device']() %} {% set list_exist_part = salt['disk.blkid']() %} list_exist: cmd.run: - name: "echo 'exist: {{ list_exist_part }}'" {% set list_sd_exist = [] %} {% for item in list_exist_part %} {% if "/dev/sd" in item %} {% do list_sd_exist.append(item) %} show_{{ item }}: cmd.run: - name: "echo 'item: {{ item }}'" {% endif %} {% endfor %} create_partition: module.run: - name: … The other files that we need to manage have to do with Salt’s management of MySQL systems. In order to add an item to this list, use the grains.append function: Copy. Asking for help, clarification, or responding to other answers. It only takes a minute to sign up. Was there an organized violent campaign targeting whites ("white genocide") in South Africa? This is in additional to the standard control structures and Python data types that are already available in Jinja. The output of the Jinja process is then passed to a YAML processor which parses the data in the files into a data structure usable by salt… Measuring luminescence in a fluorescence plate reader. Jinja is a simple programming language that Salt supports, along with Python, inside state files. For options of how to implement this I was thinking along the lines of one of these two different ideas. What happened in April 2020 on devops.se? Pillars are sets of data that we can push to the minions and then consume in state or managed files. You can choose e.g. "translated from the Spanish"? Also, keep in mind that Jinja templating in Salt supports referencing pillar data as well as invoking functions from execution modules, so there's no need to place information in grains to make it available to Jinja templates. Bicycle weight limit (carrying capacity) increase. CLI Example: salt '*' grains.delval key salt.modules.grains.filter_by (lookup_dict, grain='os_family', merge=None) ¶ New in version 0.17.0. Centralizing variables with pillars. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. After setting these values, when you apply the following Salt state: The httpd package is installed on RedHat, while the apache2 package is installed on Debian. salt.states.file.append (name, text=None, makedirs=False, source=None, source_hash=None, template='jinja', sources=None, source_hashes=None, defaults=None, context=None) ¶ Ensure that some text appears at the end of a file. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. get ('_pillar_rend', False)) env_args = {'extensions': [], 'loader': loader} if hasattr (jinja2. Delete a grain from the grains config file. Making statements based on opinion; back them up with references or personal experience. random-config: file.managed: - name: /etc/random.conf - source: salt://module/templates/random.conf.j2 - template: jinja - defaults: host_list: ' ["host-1.domain.com","host-2.domain.com","host-3.domain.com"]'. As you can see, Salt grains are available in a dictionary much like Salt pillar. It goes something like "if all you have is a hammer, everything looks like a nail". How can the intelligence of a super-intelligent person be assessed? ext, 'loopcontrols'): This is exactly what I was showing earlier; allowing variables to be parsed from the inside-out. jinja. At a minimum this may give you some direction as the syntax for doing a pillar merge like this may get you what you are looking for. Jinja2 doesn't care where the data comes from, this could come from JSON returned by some API, be loaded from static YAML file, or simply be a Python Dict defined in our app. {% %} - statements {{ }} - expressions to print to the template output {# #} - comments which are not included in the template output # ## - line statements; Jinja … In order to manage databases, the Salt minion must have … append ('jinja2.ext.do') if hasattr (jinja2. Jinja installation $ sudo pip3 install jinja2 We use the pip3 tool to install Jinja. If we wanted to add a script to be loaded, then we would add out script to the list. Append a value to a list in the grains config file. When you couple this with the ability to template with Jinja, it becomes VERY powerful. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Can I give "my colleagues weren't motivated" as a reason for leaving a company? To do that, we need to go deeper into templating. salt myminion grains.delval my_items. Travel to a tower with a gorgeous view toward Fuji mountain. You can also use Python methods to transform data. Or you could iterate over the list to compare whether the item is already in the list. Jinja delimiters. ). Screen Time blocks Google websites because YouTube is restricted. Save the snippet above to the saltstack/pillar/common.sls file, and then run the following commands to refresh and then list Salt pillar values for each minions: Your minions should list the values set for the Debian OS family. Grains are bits of information that the Salt minion can pull off the system it’s running on. I have a several pillars and I am trying to merge them in the same jinja variable {%- import_yaml "server_list_de.yaml" as servers %} {%- import_yaml "server_list_uk.yaml" as servers_uk %} {%- ser... Stack Exchange Network. How much of a jazz tune should I pre-arrange? This one for example... Then in your sls file you would then put at the top: Servers should then be available to you. These issues can be annoying at small scale, but they can become very important as you add more minions. Jinja2 is widely used, and there is a lot more detail in the Jinja2 docs. Jinja is a fantastic templating language. Salt lets you use Jinja to access minion configuration values, grains and Salt pillar data, and call Salt execution modules. Securely grab minion ID in pillar top file template? Conditionals. In these frameworks you will find filters that can transform IP objects, display data in YAML/Json, or even apply regex, just to name a few. In references you can find links to docs for filters available in each framework. © 2016 SaltStack. We want to configure our environment in salt's own key value store (the grains and the pillar). You could write the state in the pure python renderer, though.
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