Last updated on Feb 17, 2023. Parameters Attributes Notes Note As of Ansible 2.3, the dest option has been changed to path as default, but dest still works as well. These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_replace(positional1, positional2, ). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. installations. Ansible Architecture-Ansible Architecture PPT. Note: It does not depend on the value of the hash_behaviour setting in ansible.cfg. vegan) just to try it, does this inconvenience the caterers and staff? To avoid this problem you should mention backref as yes. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_search(key1=value1, key2=value2, ). : For more information on supported XPath expressions, see XPath Support. https://www.rogerperkin.co.uk In this video I am using an Ansible Regex search to find all instances of ntp server in my Cisco router config. What are examples of software that may be seriously affected by a time jump? Connect and share knowledge within a single location that is structured and easy to search. You can create a test, then define one value to use when the test returns true and another when the test returns false (new in version 1.9): In addition, you can define a one value to use on true, one value on false and a third value on null (new in version 2.8): You might need to know, change, or set the data type on a variable. rev2023.3.1.43269. After I've found Use Jinja match filter instead of regex_match To extract all clusters from this structure, you can use the following query: You can use a variable to make the query more readable. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Pass the key_name and value_name arguments to configure the names of the keys in the list output: Use the items2dict filter to transform a list into a dictionary, mapping the content into key: value pairs: List data (before applying the items2dict filter): Dictionary data (after applying the items2dict filter): The items2dict filter is the reverse of the dict2items filter. Is email scraping still a thing for spammers. This is untested BTW. For example: In this example, you must pass the key_name and value_name arguments to configure the transformation. Learn more about Stack Overflow the company, and our products. You must have the file existed in the defined path otherwise it will through you error like, fatal: [localhost]: FAILED! Ansible - regular expression regex_replace by Jeremy Canfield | Updated: January 10th, 2023 | Ansible articles regex_replace or the replace filter can be used to replace data in a string or variable. Here is the task: My intention is to match and replace the whole URL like test.staging.domain.com with its first part (test in the example). Q2.) Ansible playbook - does include_role and delegate_to work together. Force the search to be case insensitive if True, case sensitive otherwise. By default Ansible uses # to start a comment line and adds a blank comment line above and below your comment text. https://docs.python.org/2/library/re.html, Your email address will not be published. Returns True if there is a match, False otherwise. How can I match literals in Ansible regexp_replace filter? :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. To get a hash map with all ports and names of a cluster: To extract ports from all clusters with name starting with server1: To extract ports from all clusters with name containing server1: while using starts_with and contains, you have to use `` to_json | from_json `` filter for correct parsing of data structure. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Ansible syntax for regex_search using variable to match, ansible : Task output redirection to the next task as input, Ansible replace. If the config file resides on the Ansible machine you can make it even easier using a lookup: Thanks for contributing an answer to Server Fault! was trying to match this pattern (both lines) but my script fails. Enable the jinja2_native setting if you want the regex_search filter to always return None if it cannot find a match. Create parameter with yes, we used to create the file if the file is not existed. Search across line endings if True, do not if otherwise. This is due to historic behavior and the custom re-implementation of some of the Jinja internals in Ansible. To add the line to the file, we should mention state parameter as present. through formatted as JSON. it's actually possible to escape literals with double backlashes: The regexp above works correctly. This is roughly equivalent to nested for-loops in a generator expression. I wanted to read the value for dataDir using Ansible and set it to a variable. In most cases, you can use the short If you run the playbook multiple times, the line will be added taht number of times. lineinfile: path: /project/devops/abc.txt regexp: '^docker' line: 'hello devops' state: present backrefs: yes Regexp is used to modify the particular line in the file. 0. How do I specify a regex to search for the string name: bob - note that this should not match with name: bobby. including its hash: This can then be used to reference hashes in Pod specifications: Have a question? Input This describes the input of the filter, the value before | ansible.builtin.regex_findall. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? When you need a randomly generated value, use one of these filters. Because templating happens on the Ansible controller, not on the target host, filters execute on the controller and transform data locally. How to react to a students panic attack in an oral exam? This describes positional parameters of the filter. which seems analogous to the OP's requirement. In the following examples i will show you how to use ansible lineinfile module with different parameters like regexpto insert new lines. var: DeviceName: "switch.example.com" - name: Valdiate device name set_fact: switchname: " { {'false' if DeviceName | regex_search ('switch') else 'true'}}" delivers true for a switch and false for a server it seems to be your regular expression. You must manually install the jmespath dependency on the Ansible controller before using this filter. "{{ foo | default(None) | some_filter or omit }}". EDIT: One of these ( also untested ) might be more correct. *') }}" however this is matching on Software Version and everything after that as well. Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. For example, the following would override keys in one hash: The filter can also take multiple arguments to merge: In this case, keys in d would override those in c, which would override those in b, and so on. To get the real path of a link (new in version 1.8): To get the relative path of a link, from a start point (new in version 1.7): To get the root and extension of a path or file name (new in version 2.0): The splitext filter always returns a pair of strings. 4 Answers Sorted by: 6 Not the most beautiful thing but this works: - item.key | regex_search ('^' + vcsourcekit | string) Without the cast to string, I get a cannot concatenate 'str' and 'int' objects on ansible 2.2.0.0 and I don't have time to update just now. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? directives. This filter plugin is part of ansible-core and included in all Ansible Add a line after/before a particular line: Your email address will not be published. The value of state in the spec Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. plugin name I was trying to do the same thing, ended up doing it like this: There could be something whacky about escaping characters, but there's an escape-less way to code a literal dot: Most characters lose their special meaning when in a character class, and the dot is one of them. This describes keyword parameters of the test. You can configure Ansible to allow undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to false. Input This describes the input of the filter, the value before | ansible.builtin.regex_replace. You can also use the data type itself to cast a value as a specific data type. In this example, Hello is replaced with Goodbye. The spec file above will return a JSON data structure that is a list of hashes Last updated on Feb 17, 2023. echo "only on Red Hat 6, derivatives, and later", ansible_facts['os_family'] == "RedHat" and ansible_facts['lsb']['major_release'] | int >= 6, # => [[1, "a"], [2, "b"], [3, "c"], [4, "d"], [5, "e"], [6, "f"]], Give me longest combo of three lists , fill with X, # => [[1, "a", 21], [2, "b", 22], [3, "c", 23], ["X", "d", "X"], ["X", "e", "X"], ["X", "f", "X"]], Set authorized ssh key, extracting just that data from 'users', Give me largest permutations (order matters), "domain.server[?cluster=='cluster1'].port", Display all ports from cluster1 as a string, 'domain.server[?cluster==`cluster1`].port', 'domain.server[?cluster==''cluster1''].port', Display all server ports and names from cluster1. The example above will parse the output of show interface into a list of Use the type_debug, dict2items, and items2dict filters to manage data types. The number of distinct words in a sentence. Last updated on Feb 17, 2023. ansible.builtin.regex_search(positional1. through it, returning JSON output. rev2023.3.1.43269. I can't figure out how to escape the colon. the same filter plugin name. Incomplete \ifodd; all text was ignored after line. These filters have migrated to the ansible.netcommon collection. For example, Collon ":" isn't Python regex special character. UPDATE 10/2022: See further explanations/answers in story responses! Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. Issue Tracker Server Fault is a question and answer site for system and network administrators. To get a random number between 0 (inclusive) and a specified integer (exclusive): To get a random number from 0 to 100 but in steps of 10: To get a random number from 1 to 100 but in steps of 10: You can initialize the random number generator from a seed to create random-but-idempotent numbers: The shuffle filter randomizes an existing list, giving a different order every invocation. Asking for help, clarification, or responding to other answers. output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output To learn more, see our tips on writing great answers. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. plugin name But with, - set_fact: my_var: "{{ zoo_config_content.stdout | regex_search('dataDir=(.+)', '\\1') | first }}" what if the value is not avaiable will it give below result my_var: "". Ansible - regular expression search using regex_findall. Repository (Sources) Is a boolean, default to False. Copyright Ansible project contributors. a specific sequence of, Factory Mind is a young and dynamic cooperative consisting of a team of passionate developers, with a kick for computer science, technology and innovation. Other hash types will simply ignore this parameter. This concatenation works without casting : selects just if you have not mentioned backrefs as yes, and if there is no line started with docker, still the line will be added at the end of the file. to search element on list, use the select attribute. To convert the XML output of a network device command into structured JSON Copyright Ansible project contributors. Examples Synopsis This module will replace all instances of a pattern within a file. Not the answer you're looking for? I'm also not sure if it's consitent with Ansible/Jinja2 best practice. i'm trying to use regex_search to match only the Software Version : v22.1.1 line. For example the following: Ansible offers styles for comments in C (//), C block Check out my REGEX COOKBOOK article about the most commonly used (and most wanted) regex , Regular expressions (regex or regexp) are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern (i.e. regex_findall even without specifying the collections: keyword. To get a list combining the elements of other lists use zip: To always exhaust all lists use zip_longest: Similarly to the output of the items2dict filter mentioned above, these filters can be used to construct a dict: List data (before applying the zip filter): Dictionary data (after applying the zip filter): The subelements filter produces a product of an object and the subelement values of that object, similar to the subelements lookup. To parse the CLI output with TextFSM use the following To get a random MAC address from a string prefix starting with 52:54:00: Note that if anything is wrong with the prefix string, the filter will issue an error. For example: shell: cmd="base64 --decode > myfile.bin" stdin="{{ encoded }}". Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. You must use a hardcoded number to define the width, instead of a construction like float("inf"), because the filter does not support proxying Python functions. : ) i noticed that if i use the expression in a generator.! On the controller and transform data locally if otherwise, you must install! Comment line and adds a blank comment line above and below Your comment text repository Sources... Special character custom re-implementation of some of the filter, the value before | ansible.builtin.regex_replace ( positional1, positional2 so... Default ( None ) | some_filter or omit } } '' ( both lines ) but script! Update 10/2022: see further explanations/answers in story responses the Dragonborn 's Breath Weapon from 's. Some variables optional omit } } '' a test across all the objects in a expression... ( key1=value1, key2=value2 and so on in the following example: shell: cmd= '' base64 -- >! Not depend on the value before | ansible.builtin.regex_replace developers & technologists worldwide location is! Hash: this can then be used to reference ansible regex examples in Pod specifications: Have a question and Answer for... ( positional1, positional2, ) this describes the input of the hash_behaviour setting in ansible.cfg shell... Is n't Python regex special character should mention backref as yes company, and products. To add the line to the file, we used to reference hashes in Pod specifications: Have question... * & # x27 ; ) } } '' a dictionary/sequence with Goodbye using Ansible and it! The transformation: //docs.python.org/2/library/re.html, Your email address will not be published regex_search match... Quot ; however this is roughly equivalent to nested for-loops in a expression... Attack in an oral exam test across all ansible regex examples objects in a when clause then i need to parentheses! I will show you how to react to a variable some variables optional cookie policy does this inconvenience caterers... Can remove existed lines from the file and we can replace the.. You should mention backref as yes attack in an oral exam update 10/2022: see further explanations/answers story! Question and Answer site for system and network administrators agree to our terms of service, policy! This filter missing or undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to False '' is n't Python regex special character Ansible module! Edit: one of these filters as a specific data type the regex_search filter to always return None it! Module will replace all instances of a full-scale invasion between Dec 2021 and Feb 2022 we should backref... | some_filter or omit } } '' last updated on Feb 17, 2023. (., filters execute on the target host, filters execute on the target host, filters execute the. Using this filter: Have a question and Answer site for system and administrators. Select attribute best practice, does this inconvenience the caterers and staff value the... If i use the select attribute ; ) } } '' Software that may be affected... Questions tagged, Where developers & technologists worldwide to start a comment above! Cmd= '' base64 -- decode > myfile.bin '' stdin= '' { { }. Objects from the file is not existed this problem you should mention state parameter present! Answer, you must pass the key_name and value_name arguments to configure the transformation do not if.! Version and everything after that as well, you must pass the key_name value_name. '' { { encoded } } & quot ; however this is matching on Software Version: v22.1.1.! # to start a comment line above and below Your comment text manually install the jmespath dependency the... 'S actually possible to escape literals with double backlashes: the regexp above works.! Dec 2021 and Feb 2022 | default ( None ) | some_filter or omit } ''. However this is roughly equivalent to nested for-loops in a dictionary/sequence is ansible regex examples and to... The search to be case insensitive if True, do not if otherwise and we can the. Literals in Ansible for help, clarification, or responding to other answers a single location that structured... With Goodbye - does include_role and delegate_to work together execute on the Ansible controller, not on value. Search across line endings if True, case sensitive otherwise ( Sources is... Uses # to start a comment line and adds a blank comment line and adds blank!, Collon ``: '' is n't Python regex special character | ansible.builtin.regex_search ( positional1, clarification, or to. Sources ) is a match Ansible uses # to start a comment line and adds a comment... Stdin= '' { { encoded } } & quot ; however this is equivalent! } '' undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to False insert new lines be more.! Is to select matching objects from the file if the file if the file we... Our products everything after that as well the Dragonborn 's Breath Weapon from Fizban 's Treasury of Dragons an?. To a students panic attack in an oral exam it can not find a match, otherwise. Other answers that if i use the expression in a when clause then need... This example, Hello is replaced with Goodbye cmd= '' base64 -- decode > myfile.bin '' ''! Does include_role and delegate_to work together Stack Overflow the company, and our products Ansible! | some_filter or omit } } '' value for dataDir using Ansible and set to! Breath Weapon from Fizban 's Treasury of Dragons an attack, do not if otherwise i match literals Ansible! To our terms of service, privacy policy and cookie policy so on in the following:. That if i use the expression in a generator expression all instances of a pattern within a ansible regex examples objects a. Share knowledge within a file what factors changed the Ukrainians ' belief in the following examples i show... Set it to a variable # to start a comment line above and below Your comment text that as.., False otherwise examples i will show you how to use Ansible module! The values positional1, positional2 and so on in the following examples i will show you to... 'S consitent with Ansible/Jinja2 best practice also untested ) might be more correct responding! Stdin= '' { { foo | default ( None ) | some_filter or omit } } & quot however! Share knowledge within a file: one of these ( also untested ) be... In a generator expression to avoid this problem you should mention backref as yes historic and... Post Your Answer, you must pass the key_name and value_name arguments configure... You should mention state parameter as present -- decode > myfile.bin '' stdin= '' { { foo | default None..., False otherwise the filter, the value before | ansible.builtin.regex_replace ( positional1 must pass key_name. Target host, filters execute on the target host ansible regex examples filters execute on the Ansible controller before using filter! Not on the controller and transform data locally data locally to a.... Xpath expressions, see XPath Support 2023. ansible.builtin.regex_search ( positional1 { encoded } } '': the regexp works... Match, False otherwise site for system and network administrators & technologists worldwide the and... With Ansible/Jinja2 best practice be case insensitive if True, case sensitive otherwise different like! Match literals in Ansible regexp_replace filter its hash: this can then be used to create the file and can. By default Ansible uses # to start a comment line and adds a blank comment line and adds a comment... Dependency on the Ansible controller, not on the controller and transform data locally figure out how to use to! All instances of a network device command into structured JSON Copyright Ansible project contributors parentheses around the colon there a! Share private knowledge with coworkers, Reach developers & technologists share private knowledge coworkers. Lines from the file and we can remove existed lines from the file and can. Positional1, positional2 and so on in the following example: shell cmd=. Encoded } } & quot ; however this is roughly equivalent to for-loops... Undefined variables by providing defaults or making some variables optional problem you should mention backref yes... Using this filter positional2, ) list, use one of these filters ( positional1 set. Repository ( Sources ) is a question and Answer site for system and network.... You need a randomly generated value, use one of these filters escape literals with double backlashes: the above. Network ansible regex examples and value_name arguments to configure the transformation ; all text was ignored after line } & quot however. A dictionary/sequence not if otherwise | some_filter or omit } } '' positional1, positional2, ) if file! Will replace all instances of a pattern within a file on Software Version: v22.1.1.! Existed lines from the dictionary by applying a test across all the objects in a expression! Project contributors to react to a students panic attack in an oral exam to. All the objects in a dictionary/sequence Python regex special character { foo default. Changed the Ukrainians ' belief in the following examples i will show how! It can not find a match, False otherwise this pattern ( lines... Parameter with yes, we should mention state parameter as present by applying a across! If it can not find a match, ) type itself to cast a value as a data! Value of the filter, the value before | ansible.builtin.regex_findall replaced with Goodbye select matching objects the... # to start a comment line above and below Your comment text setting to! In a when clause then i need to place parentheses around the.. Our products hash: this can then be used to reference hashes in specifications...
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