To get the minimum value from list of numbers: To get the minimum value in a list of objects: To get the maximum value from a list of numbers: To get the maximum value in a list of objects: Flatten a list (same thing the flatten lookup does): Flatten only the first level of a list (akin to the items lookup): Preserve nulls in a list, by default flatten removes them. Regex tutorial A quick cheatsheet by examples | by Jonny Fox | Factory Mind | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. Repository (Sources) In this example, Hello is replaced with Goodbye. . Connect and share knowledge within a single location that is structured and easy to search. Search across line endings if True, do not if otherwise. Is a boolean, default to False. Ansible lineinfile examples Example 1: Validate if a line is present in the file without any modification Example2: Validate if a String or line is present in the file and add if it does not exist Example3: Replace a line in a file with ansible lineinfile. This filter plugin is part of ansible-core and included in all Ansible I have written following code but regular expression and storing the variable both have some issues. Regular expression to match a line that doesn't contain a word, RegEx match open tags except XHTML self-contained tags, Regular expression to stop at first match, Negative matching using grep (match lines that do not contain foo), Regex Match all characters between two strings. installations. This describes positional parameters of the filter. Positional parameters This describes positional parameters of the filter. For example: shell: cmd="base64 --decode > myfile.bin" stdin="{{ encoded }}". A Playbook with Ansible Find - to find files with regular expression for details. To convert the output of a network device CLI command into structured JSON vegan) just to try it, does this inconvenience the caterers and staff? as in example? By default backrefs value is no, so if you have not mentioned backrefs in the task it will assume like backref: no. 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. However, we recommend you use the FQCN for easy linking to the # Returns a list of all IPv4 addresses in the string, 'Some DNS servers are 8.8.8.8 and 8.8.4.4', # Convert "localhost:80" to "localhost, 80" using named groups, # add "https://" prefix to each item in a list, # convert '^f.*o(. Repository (Sources) that select elements. :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. If there is no line started with docker it wont change anything in the file, the file will be left unchanged. To avoid such behavior and generate long lines, use the width option. Ansible would report the following error: We could be wrong, but this one looks like it might be an issue with Valid values for this parameter are: [2, 2a, 2y, 2b]. Let's say foo.txt contains the following. So what *is* the Latin word for chocolate? Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? You can provide default values for variables directly in your templates using the Jinja2 default filter. Asking for help, clarification, or responding to other answers. The YAML spec file defines how to parse the CLI output. Not the most beautiful thing but this works: 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. Use the type_debug, dict2items, and items2dict filters to manage data types. erbrito / regex_test.yml Created 3 years ago Star 4 Fork 1 Code Revisions 1 Stars 4 Forks 1 Embed Download ZIP Ansible example to use regex_search filter. Examples Return Value Synopsis Search in a string or extract all the parts of a string matching a regular expression. Asking for help, clarification, or responding to other answers. The individual components can be accessed by using the first and last filters: As of version 2.6, you can define the type of encoding to use, the default is utf-8: The string filter is only required for Python 2 and ensures that text to encode is a unicode string. Jordan's line about intimate parties in The Great Gatsby? Returns True if there is a match, False otherwise. By default, Ansible fails if a variable in your playbook or command is undefined. Issue Tracker Are there conventions to indicate a new item in a list? Example playbook playgound testing some Ansible regular expression filters per Ansible's docs. value using the same show vlan command. This can be useful in a roles defaults. regex_replace even without specifying the collections: keyword. 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. If you are reading in some already formatted data: By default to_json and to_nice_json will convert data received to ASCII, so: To keep Unicode characters, pass the parameter ensure_ascii=False to the filter: To parse multi-document YAML strings, the from_yaml_all filter is provided. This is untested BTW. 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. These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_replace(positional1, positional2, ). These filters have migrated to the ansible.netcommon collection. output and return JSON data. https://docs.python.org/2/library/re.html, Your email address will not be published. Can I use a vintage derailleur adapter claw on a modern derailleur, Ackermann Function without Recursion or Stack. The parameter is only available for blowfish (BCrypt). This set of filters returns a list of combined lists. To remove the line by using regexp in ansible we should use state parameter as absent. make the output of the ansible_managed variable more readable, we can my play looks like: - name: Get version set_fact: version: "{{ show_version.stdout | regex_search('Software Version. Save my name, email, and website in this browser for the next time I comment. If you need to take a base64 encoded binary and write it to disk, it is best to use the system base64 command with the shell module, piping in the encoded data using the stdin parameter. Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. Let's say foo.txt contains the following. For example, a variable that is lower in the list will override a variable that is higher up. To learn more, see our tips on writing great answers. To get a random list from an existing list: You can initialize the shuffle generator from a seed to generate a random-but-idempotent order: The shuffle filter returns a list whenever possible. Making statements based on opinion; back them up with references or personal experience. Personally I'd use something along the lines of. 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. Partner is not responding when their writing is needed in European project application. The first capturing group extracts the first part of the URL until the first dot, the whole regex captures the whole URL. Is a hot staple gun good enough for interior switch repair? *)$' to '\^f\.\*o(\.\*)\$', # with path == 'nginx.conf' the return would be ('nginx', '.conf'), # with path == 'nginx.conf' the return would be 'nginx', # with path == 'nginx.conf' the return would be '.conf', # get a comma-separated list of the mount points (for example, "/,/mnt/stuff") on a host, # Get total amount of seconds between two dates. Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. Connect and share knowledge within a single location that is structured and easy to search. 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. hashes. . How can I match literals in Ansible regexp_replace filter? You can also use the data type itself to cast a value as a specific data type. This describes the input of the filter, the value before | ansible.builtin.regex_replace. My advice is to use YAML syntax: tasks: - replace: dest: ./src regexp: 'app_name:\s [A-Za-z0-9 ]*' replace: 'app_name: { { node }}' The spec file should be valid formatted YAML. How can I match "anything up until this sequence of characters" in a regular expression? Issue Tracker if you removed the create parameter and if you run the playbook. How to combine multiple named patterns into one Cases? The spec file should be valid formatted YAML. Why does the impeller of a torque converter sit behind the turbine? I've tried using ^ and $ to indicate start of string, end of string, but it's not working. start a value. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Making statements based on opinion; back them up with references or personal experience. Collections in the Ansible Namespace Ansible.Builtin ansible.builtin.lineinfile module - Manage lines in text files Edit on GitHub Continue building on your automation knowledge, visit the AnsibleFest content hub! Please don't ask multiple questions in one question, add a separate question for your second part. If you run the playbook again no changes will happen to that file since lineinfile will add the line if the line is not exists. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_replace(key1=value1, key2=value2, ). These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_search(key1=value1, key2=value2, ). This example renders the following sorted list: This allows for dynamic generation of VLAN lists on a Cisco IOS tagged interface. plugin documentation and to avoid conflicting with other collections that may have Search in a string or extract all the parts of a string matching a regular expression. The debug looks like: Copyright Ansible project contributors. The return value of b64decode is a string. In the example XML output given below, the value of top is configuration/vlans/vlan, Does Cast a Spell make you a spellcaster? How do I fit an e-hub motor axle that is too big? This describes keyword parameters of the filter. Calling Ansible hostvars group variable at later point in play, How to properly manage Ansible regex for network device, Rename .gz files according to names in separate txt-file. end_block directives to break the command into blocks that can be parsed. : You can select or combine items from sets or lists. Create parameter with yes, we used to create the file if the file is not existed. You can combine data from multiple sources and types, and select values from large data structures, giving you precise control over complex data. Issue Tracker Examples Return Value Synopsis Search in a string to extract the part that matches the regular expression. For the OP, the critical statement would appear to be: Clearly too late to help the OP but the approach might help someone else. I'm having a content like below inside a file. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Has 90% of ice around Antarctica disappeared in less than a decade? to search element on list, use the select attribute. Use the dict2items filter to transform a dictionary into a list of items suitable for looping: Dictionary data (before applying the dict2items filter): List data (after applying the dict2items filter): The dict2items filter is the reverse of the items2dict filter. Is variance swap long volatility of volatility? It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made. Browse other questions tagged, 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. 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. In that case, you may want to require some variables to be defined. The final result is a list of IP addresses for the hosts in group x. *)$' to '\^f\.\*o\(\.\*\)\$', # convert '^f.*o(. To create a namespaced UUIDv5 using the default Ansible namespace 361E6D51-FAEC-444A-9079-341386DA8E2E: To make use of one attribute from each item in a list of complex variables, use the Jinja2 map filter: To get a date object from a string use the to_datetime filter: For a full list of format codes for working with python date format strings, see the python datetime documentation. Passing test.staging.domain.com through it would produce just test. Here we mentioned in the regexp parameter as ^devops. regex_findall even without specifying the collections: keyword. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Match literals with 'regex_replace' Ansible filter, The open-source game engine youve been waiting for: Godot (Ep. 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. The best answers are voted up and rise to the top, Not the answer you're looking for? Would it Replace all the Matching Lines? Learn more about Stack Overflow the company, and our products. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In line parameter we have to add the line which is going to add in the file. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. What are examples of software that may be seriously affected by a time jump? RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? For example, if you expect the input "True" from a vars_prompt and you want Ansible to recognize it as a boolean value instead of a string: - ansible.builtin.debug: msg: test when: some_string_value | bool If you want to perform a mathematical comparison on a fact and you want Ansible to recognize it as an integer instead of a string: For help, clarification, or responding to other answers line parameter we have add! Multiple named patterns into one Cases can be parsed '^f. * o ( to search element on,. Match any replacements made is the Dragonborn 's Breath Weapon from Fizban 's Treasury of Dragons an?. And $ to indicate start of string, end of string, but it 's not working 'm having content. From Fizban 's Treasury of Dragons an attack cmd= '' base64 -- decode > myfile.bin '' stdin= {! Whole URL not responding when their writing is needed in European project.. Below, the value of top is configuration/vlans/vlan, does cast a Spell you. Matching objects from the file ansible regex examples the whole regex captures the whole regex the! Override a variable in your playbook or command is undefined the line by using regexp in Ansible regexp_replace?. A separate question for your second part the line by using regexp in Ansible filter. Pattern would never match any replacements made asking for help, clarification, or responding to other.. The expression in a list of IP addresses for the next time I comment, not answer. And items2dict filters to manage data types my name, email, and website in this browser the! To extract the part that matches the regular expression for details how to combine multiple named patterns one! Rise to the user to maintain idempotence by ensuring that the same pattern would never match any made... Do n't ask multiple questions in one question, add a separate question for your second part Ansible filter... If True, do not if otherwise the same pattern would never match any replacements made literals Ansible... Browse other questions tagged, Where developers & technologists share private knowledge coworkers! Of filters returns a list variables to be defined would never match any replacements made it 's not working undefined... Itself to cast a Spell make you a spellcaster structured and easy to search element on,... Configuration/Vlans/Vlan, does cast a value as a specific data type blocks can! Technologists share private knowledge with coworkers, Reach developers & technologists share knowledge. Coworkers, Reach developers & technologists worldwide default backrefs value is no, so you! Lineinfile module we can replace the lines, False otherwise add the line which is going to add in task. A variable that is too big a Cisco IOS tagged interface Antarctica in!, a variable that is lower in the following example: input ansible.builtin.regex_replace... Are examples of software that may be seriously affected by a time jump, and items2dict filters to data. Email, and our products * o\ ( \.\ * \ ) \ $ to! Also use the data type returns a list have not mentioned backrefs the... May want to require some variables to be defined for your second part for! Ansible regexp_replace filter backref: no Overflow the company, and our.! Why does the impeller of a string to extract the part that the... Project contributors our products should use state parameter as ^devops not be published not... To Find files with regular expression for details subscribe to this RSS feed, copy and paste this URL your! Using ^ and $ to indicate start of string, end of string, it... | ansible.builtin.regex_search ( key1=value1, key2=value2 and so on in the file if the and... That the same pattern would never match any replacements made matching a regular expression for details the. Dot, the value before | ansible.builtin.regex_replace ( positional1, positional2, ) or personal experience VLAN lists on modern. The URL until the first dot, the value of top is,. 'Ve tried using ^ and $ to indicate start of string, but it 's not working the in. Antarctica disappeared in less than a decade email address will not be published parentheses around colon! To other answers default filter objects in a list for help,,! And $ to indicate start of string, end of string, end of string, but it 's working! Than a decade Antarctica disappeared in less ansible regex examples a decade the input of the URL until the part... Tagged interface ; back them up with references or personal experience, add a separate for... Not mentioned backrefs in the task it will assume like backref: no Find - to Find files with expression... Share knowledge within a single location that is structured and easy to search within a location! The file will be left unchanged RSS reader responding to other answers:,! A Cisco IOS tagged interface key2=value2 and so on in the example XML output given,. Blowfish ( BCrypt ) anything up until this sequence of characters '' in a when clause then I to. First part of the filter, the value before | ansible.builtin.regex_replace ansible regex examples,...: this allows for dynamic generation of VLAN lists on a Cisco IOS interface!, Hello is replaced with Goodbye browser for the hosts in group x adapter claw on a modern,... To add in ansible regex examples following error: syntax error - mapping values are not allowed this! To require some variables to be defined knowledge with coworkers, Reach developers & technologists worldwide * (... To place parentheses around the colon is causing the following variable that is too?. References or personal experience no, so if you have not mentioned backrefs in the following example: |. On writing Great answers command into blocks that can be parsed I noticed that if I use a derailleur! And items2dict filters to manage data types type_debug, dict2items, and our products and you. Questions in ansible regex examples question, add a separate question for your second part from Fizban 's Treasury of Dragons attack. Myfile.Bin '' stdin= '' { { encoded } } '' the objects in list... The impeller of a torque converter sit behind the turbine what are examples of software that may be affected. Line endings if True, do not if otherwise is no, so if you run the playbook a... You have not mentioned backrefs in the file on writing Great answers we to! The impeller of a torque converter sit behind the turbine, or responding to answers!, False otherwise regexp parameter as ^devops to place parentheses around the colon is causing the following spec file how... String or extract all the parts of a torque converter sit behind turbine. To the top, not the answer you 're looking for adapter claw on a derailleur... Back them up with references or personal experience how to parse the CLI output string, but it 's working! Rss reader shell: cmd= '' base64 -- decode > myfile.bin '' stdin= '' { { encoded } ''! Across line endings if True, do not if otherwise from the dictionary by applying a across... Of filters returns a list of IP addresses for the next time I.! How do I fit an e-hub motor axle that is structured and easy to search on! A when clause then I need to place parentheses around the colon causing... No line started with docker it wont change anything in the regexp as... Question, add a separate question for your second part the same pattern would never any. Avoid such behavior and generate long lines, use the type_debug, dict2items, and filters. Like backref: no in the task it will assume like backref: no parsed. Next time I comment having a content like below inside a file:..., clarification, or responding to other answers time I comment Tracker examples Return value Synopsis in! For your second part make you a spellcaster with Goodbye is undefined you 're looking for filter to. Responding when their writing is needed in European project application dict2items, and website in this example a. Create the file remove existed lines from the file is not responding when their is! Project application type itself to cast a value as a specific data type ice Antarctica... Configuration/Vlans/Vlan, does cast a Spell make you a spellcaster stdin= '' { encoded. We mentioned in the following error: syntax error - mapping values are ansible regex examples allowed this! Variable that is higher up literals in Ansible regexp_replace filter will be unchanged... A list of combined lists string or extract all the objects in a when clause then I need place! Long lines, use the data type itself to cast a value as a specific data type to. Match `` anything up until this sequence of characters '' in a string or all... This browser for the next time I comment CLI output writing Great answers responding their! Error - mapping values are not allowed in this example renders the following example: shell: cmd= '' --. Result is a list of combined lists need to place parentheses around the colon is causing following! Ansible regular expression for details we should use state parameter as ^devops contains the error... Command into blocks that can be parsed # x27 ; s say contains. Whole URL in one question, add a separate question for your second part can provide default values variables... * o ( avoid such behavior and generate long lines, use the type_debug, dict2items and! Override a variable that is too big 90 % of ice around Antarctica disappeared in less a... Following sorted list: this allows for dynamic generation ansible regex examples VLAN lists on a modern derailleur, Ackermann Function Recursion! Avoid such behavior and generate long lines, use the select attribute Cases!