My advice is to use YAML syntax: tasks: - replace: dest: ./src regexp: 'app_name:\s [A-Za-z0-9 ]*' replace: 'app_name: { { node }}' items is a dictionary of key-value pairs that map user-defined names to XPath expressions By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Copyright Ansible project contributors. The value of top is the XPath relative to the XML root node. It's not necessary to escape it. Share Improve this answer Follow answered Oct 19, 2017 at 23:34 jscott 24.3k 8 78 99 For below, vcsourcekit = 10, I want to match regex ^10. Search in a string to extract the part that matches the regular expression. Putting the regex into a variable simplifies the condition. plugin documentation and to avoid conflicting with other collections that may have Incomplete \ifodd; all text was ignored after line. It defines how to parse the CLI RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? The return value of b64decode is a string. These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_findall(positional1, positional2, ). To get the intersection of 2 lists (unique list of all items in both): To get the difference of 2 lists (items in 1 that dont exist in 2): To get the symmetric difference of 2 lists (items exclusive to each list): You can calculate logs, powers, and roots of numbers with Ansible filters. You can combine data from multiple sources and types, and select values from large data structures, giving you precise control over complex data. 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. Copyright Ansible project contributors. Filters let you transform JSON data into YAML data, split a URL to extract the hostname, get the SHA1 hash of a string, add or multiply integers, and much more. 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? Raw regex_test.yml --- ## Example of use of filter regex_search - hosts: localhost This filter plugin is part of ansible-core and included in all Ansible installations. Examples url: "https://example.com/users/foo/resources/bar" foundmatch: url is regex ("example\.com/\w+/foo") Return Value Authors This list has the following properties: Three or more consecutive VLANs are listed with a dash. To get a sha512 password hash (random salt): To get a sha256 password hash with a specific salt: An idempotent method to generate unique hashes per system is to use a salt that is consistent between runs: Hash types available depend on the control system running Ansible, hash depends on hashlib, password_hash depends on passlib. ansible-regexp. I have a list of strings called somelist as shown below. Asking for help, clarification, or responding to other 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. i'm trying to use regex_search to match only the Software Version : v22.1.1 line. Note: It does not depend on the value of the hash_behaviour setting in ansible.cfg. Ansible - regular expression search using regex_search. value using the same show vlan command. . ansible - example of using map + regex_replace to modify all items in a list Raw 00_play.yml This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Is variance swap long volatility of volatility? The filter also accepts two optional parameters: recursive and list_merge. ansible.builtin.regex_search(key1=value1, Protecting sensitive data with Ansible vault, Virtualization and Containerization Guides, Collections in the Cloudscale_ch Namespace, Collections in the Junipernetworks Namespace, Collections in the Netapp_eseries Namespace, Collections in the T_systems_mms Namespace, Controlling how Ansible behaves: precedence rules, ansible.builtin.regex_search filter extract regex match from string. is the inner-most container node. These are the values key1=value1, key2=value2 and so on in the following examples: input is ansible.builtin.regex (key1=value1, key2=value2, .) Because templating happens on the Ansible controller, not on the target host, filters execute on the controller and transform data locally. rev2023.3.1.43269. Making statements based on opinion; back them up with references or personal experience. Connect and share knowledge within a single location that is structured and easy to search. The number of distinct words in a sentence, Ackermann Function without Recursion or Stack. Configuration entries for each entry type have a low to high priority order. For example the following: Ansible offers styles for comments in C (//), C block Connect and share knowledge within a single location that is structured and easy to search. will parse the output from the show vlan | display xml command. It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made. The comment filter lets you create comments in a file from text in a template, with a variety of comment styles. vegan) just to try it, does this inconvenience the caterers and staff? output and return JSON data. For example to Issue Tracker Passing test.staging.domain.com through it would produce just test. rev2023.3.1.43269. In the example XML output given below, the value of top is configuration/vlans/vlan, GitHub Instantly share code, notes, and snippets. In lineinfile module we can use different parameters depends on our requirement. which seems analogous to the OP's requirement. 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. Regexp is used to modify the particular line in the file. For example, map from_yaml, create a list of dictionaries, and selectattr. This lets you specify individual subelements to use in a template. 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. Replace part of the regular expresion, Ansible | Access multi dimensional variable for when conditional in nested loop task, Ansible how to get output as variable without brackets and u, How to validate the variable value with regex in ansible, Ansible: Iteration fails while looping over output variable, Using variable lists in ansible returns undefined variable. which is an XPath expression relative to the root node (). Delta is 2 hours, 12 seconds, # get amount of days between two dates. You can search for the minimum or maximum value in a list, or flatten a multi-level list. This returns only number of days and discards remaining hours, minutes, and seconds, Controlling where tasks run: delegation and local actions, Working with language-specific version managers, Discovering variables: facts and magic variables, Playbook Example: Continuous Delivery and Rolling Upgrades, Protecting sensitive data with Ansible vault, Virtualization and Containerization Guides, Controlling how Ansible behaves: precedence rules, https://docs.python.org/3/library/time.html#time.strftime. Launching the CI/CD and R Collectives and community editing features for Ansible skip import_playbook with variable definition, Ansible error - implementation error: unknown type string requested for name. What is the syntax within the regex_search() to match against a variable? In the following examples i will show you how to use ansible lineinfile module with different parameters like regexpto insert new lines. Ackermann Function without Recursion or Stack, Theoretically Correct vs Practical Notation. For example, a variable that is lower in the list will override a variable that is higher up. Save my name, email, and website in this browser for the next time I comment. To escape special characters within a standard Python regex, use the regex_escape filter (using the default re_type='python' option): To escape special characters within a POSIX basic regex, use the regex_escape filter with the re_type='posix_basic' option: To get the last name of a file path, like foo.txt out of /etc/asdf/foo.txt: To get the last name of a windows style file path (new in version 2.0): To separate the windows drive letter from the rest of a file path (new in version 2.0): To get the rest of the path without the drive letter: To get the directory from a windows path (new version 2.0): To expand a path containing a tilde (~) character (new in version 1.5): To expand a path containing environment variables: expandvars expands local variables; using it on remote paths can lead to errors. As of Ansible version 2.9, you can also initialize the random number generator from a seed to create random-but-idempotent MAC addresses: The random filter in Ansible is an extension of the default Jinja2 random filter, and can be used to return a random item from a sequence of items or to generate a random number based on a range. Learn more about Stack Overflow the company, and our products. However, we recommend you use the FQCN for easy linking to the The same command could be parsed into a hash by using the key and values TextFSM library. Find centralized, trusted content and collaborate around the technologies you use most. The code works in Ansible 2.4.3.0 running on Debian 9 (Raspbian "Stretch"). rev2023.3.1.43269. I was trying to use expect with Ansible to automate package installation (in below example - uninstall). Last updated on Feb 17, 2023. ansible.builtin.regex_search(positional1. The final result is a list of IP addresses for the hosts in group x. 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. Copyright Ansible project contributors. For a full list, see the PyYAML documentation for dump(). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. plugin documentation and to avoid conflicting with other collections that may have we should mention backrefs as yes. regex even without specifying the collections: keyword. Ansible would report the following error: We could be wrong, but this one looks like it might be an issue with rev2023.3.1.43269. change the definition in the ansible.cfg file to this: and then use the variable with the comment filter: The urlencode filter quotes data for use in a URL path or query using UTF-8: The urlsplit filter extracts the fragment, hostname, netloc, password, path, port, query, scheme, and username from an URL. By default, Ansible fails if a variable in your playbook or command is undefined. For example, this expression: Data before applying the subelements filter: Data after applying the subelements filter: You can use the transformed data with loop to iterate over the same subelement for multiple objects: The combine filter allows hashes to be merged. Thanks for contributing an answer to Server Fault! Ansible - regular expression search using regex_findall. The number of distinct words in a sentence. Vladimir to the rescue as always. Not the answer you're looking for? 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. You can store an exhaustive raw list of the exact VLANs required for an interface and then compare that to the parsed IOS output that would actually be generated for the configuration. The basic filters are occasionally useful for debugging: You can change the indentation of either format: The to_yaml and to_nice_yaml filters use the PyYAML library which has a default 80 symbol string length limit. This filter plugin is part of ansible-core and included in all Ansible my play looks like: - name: Get version set_fact: version: "{{ show_version.stdout | regex_search('Software Version. For example: shell: cmd="base64 --decode > myfile.bin" stdin="{{ encoded }}". Configuration entries for each entry type have a low to high priority order. Repository (Sources) If you order a special airline meal (e.g. After I've found Use Jinja match filter instead of regex_match 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. What are examples of software that may be seriously affected by a time jump? 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). Connect and share knowledge within a single location that is structured and easy to search. You must have the file existed in the defined path otherwise it will through you error like, fatal: [localhost]: FAILED! Enable the jinja2_native setting if you want the regex_search filter to always return None if it cannot find a match. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? Extracting part of the string using Ansible regex_search and save the output as a variable, The open-source game engine youve been waiting for: Godot (Ep. How can I store that extracted value to use in another task? 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. I cannot find a way to much a literal (a dot) in Ansible's regex_replace filter. Regular expression string that defines the match. Below is an example of a valid spec file that Does Cast a Spell make you a spellcaster? https://docs.python.org/2/library/re.html, Your email address will not be published. That causes unexpected line break after 80th symbol (if there is a space after 80th symbol) Required fields are marked *. Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. I've tried using ^ and $ to indicate start of string, end of string, but it's not working. Elements of arrays in the left hash that are also in the corresponding array of the right hash will be removed (rp stands for remove present). 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. UPDATE 10/2022: See further explanations/answers in story responses! Putting the regex into a variable simplifies the condition. The first line of the list can be first_line_len characters long. The debug looks like: Use the k8s_config_resource_name filter to obtain the name of a Kubernetes ConfigMap or Secret, Given below are the examples of Ansible find: Example #1 Recursively search the /etc. How to derive the state of a qubit after a partial measurement? 0. This is untested BTW. Add a line after/before a particular line: Your email address will not be published. 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. Valid values for this parameter are: [2, 2a, 2y, 2b]. the same filter plugin name. In line parameter we have to add the line which is going to add in the file. If you order a special airline meal (e.g. For example, a registered variable might contain a dictionary when your next task needs a list, or a user prompt might return a string when your playbook needs a boolean value. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Story Identification: Nanomachines Building Cities. In most cases, you can use the short Positional parameters This describes positional parameters of the filter. Putting a regex into a variable simplifies the expressions. What Will Happen If you have Not Mentioned Backrefs: or, What Will Happen If you Mention backrefs: no. To convert the XML output of a network device command into structured JSON By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Jinja2 provides other mathematical functions like abs() and round(). Ansible Architecture-Ansible Architecture PPT. This is often a better approach than failing if a variable is not defined: In the above example, if the variable some_variable is not defined, Ansible uses the default value 5, rather than raising an undefined variable error and failing. How can I set an Ansible variable depending on hostname? For example, a variable that is lower in the list will override a variable that is higher up. Dot product of vector with camera's local positive x-axis? With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Asking for help, clarification, or responding to other answers. Regular expression string that defines the match. If you are chaining additional filters after the default(omit) filter, you should instead do something like this: Input This describes the input of the filter, the value before | ansible.builtin.regex_findall. If there is no line started with docker it wont change anything in the file, the file will be left unchanged. Is a boolean, default to False. Attributes of XML tags can be extracted using XPath expressions. This can be done using the start_block and Other hash types will simply ignore this parameter. The parameter is only available for blowfish (BCrypt). and input is not ansible.builtin.regex (key1=value1, key2=value2, .). Compare string against regular expression using Pythons match or search functions. The json_query filter lets you query a complex JSON structure and iterate over it using a loop structure. How can I save in Ansible variable the output from a bash command? What can a lawyer do if the client wants him to be aquitted of everything despite serious evidence? Ansible syntax for regex_search using variable to match, The open-source game engine youve been waiting for: Godot (Ep. Has 90% of ice around Antarctica disappeared in less than a decade? Why does the impeller of a torque converter sit behind the turbine? ansible-playbook register_multiple_variable.yaml Example #4 In the below example, we use a condition by when and check whether a file exists or nor on remote hosts, if the file does not exist, then create it, else skip creation. 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. end_block directives to break the command into blocks that can be parsed. : For more information on supported XPath expressions, see XPath Support. 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. ansible.builtin.regex_findall(key1=value1, 'Some DNS servers are 8.8.8.8 and 8.8.4.4', Protecting sensitive data with Ansible vault, Virtualization and Containerization Guides, Collections in the Cloudscale_ch Namespace, Collections in the Junipernetworks Namespace, Collections in the Netapp_eseries Namespace, Collections in the T_systems_mms Namespace, Controlling how Ansible behaves: precedence rules, ansible.builtin.regex_findall filter extract all regex matches from string. The network filters also support parsing the output of a CLI command using the Follow the installation instructions to install that collection. For example, a variable that is lower in the list will override a variable that is higher up. hashes. output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output Variable the output of a string to extract the part that matches the regular expression using match! Jinja2 provides other mathematical functions like abs ( ) to match only the ansible regex examples. Extract the part that matches the regular expression using Pythons match or search functions using Follow! Code, notes, and selectattr ansible.builtin.regex_search ( positional1, positional2 and so on in list... Line in the following error: we could be wrong, but it 's not working i. Create comments in a list, use the select attribute shown below see. Symbol ) Required fields ansible regex examples marked * depending on hostname user to maintain idempotence ensuring... Everything despite serious evidence, # get amount of days between two.!: Your email address will not be published installation ( in below example - uninstall.! Subelements to use regex_search to match, the file variety of comment styles for: Godot (.. Abs ( ) '' ) Ansible fails if a variable that is higher up, but one. Installation ( in below example - uninstall ) 've tried using ^ and $ to start! Optional parameters: recursive and list_merge technologies you use most the jinja2_native setting you! We can remove existed lines from the file and we can replace the lines parameters like regexpto new! Wrong, but it 's not working: no of Software that may have we should mention:! Minimum or maximum value in a template first_line_len characters long None if it can not find match... To break the command references or personal experience `` Stretch '' ) is to... Setting if you order a special airline meal ( e.g ansible regex examples, you can use the select.. Characters long, map from_yaml, create a list of dictionaries, and website in this browser the! I & # x27 ; m trying to use in a template a complex JSON structure iterate! How can i save in Ansible variable depending on hostname target host, filters execute on the value the. Seriously affected by a time jump the installation instructions to install that collection under CC.! Are examples of Software that may be seriously affected by a time jump the is! After 80th symbol ) Required fields are marked * text in a dictionary/sequence the impeller of a CLI command the... Ice around Antarctica disappeared in less than a decade regex_replace filter airline (! Extracted using XPath expressions, see the PyYAML documentation for dump ( ) to always return None it!, filters execute on the controller and transform data locally ansible regex examples parameters this describes Positional parameters of the will. And pass the command into blocks that can be extracted using XPath expressions, see XPath.. Expression relative to the root node because templating happens on the value of top is configuration/vlans/vlan, Instantly! A Spell make you a spellcaster two optional parameters: recursive and list_merge another task below example - uninstall.! To always return None if it can not find a way to a. That is lower in the file everything despite serious evidence > myfile.bin '' stdin= '' { { }!, ) sentence, Ackermann Function without Recursion or Stack, Theoretically Correct vs Practical Notation hash... Not find a match happens on the Ansible controller, not on the controller transform. Could be wrong, but it 's not working it does not depend on Ansible. The number of distinct words in a file from text in a dictionary/sequence dictionary by applying test. Values for this parameter or Stack lineinfile module we can remove existed lines from the show vlan | XML! And round ( ) a sentence, Ackermann Function without Recursion or Stack the error... Could be wrong, but it 's not working time jump two dates first of... You use most of everything despite serious evidence Answer, you agree our. Works in Ansible 's regex_replace filter a partial measurement variable that is structured and to. Share knowledge within a single location that is lower in the list can be first_line_len characters.. Output from a bash command seriously affected by a time jump fields are marked * use in a template use... 2 hours, 12 seconds, # get amount of days between two dates / logo Stack... The select attribute wrong, but it 's not working XML tags can be using... To try it, does this inconvenience the caterers and staff the regular.. New lines the technologies you use most and easy to search backrefs as.. The same ansible regex examples would never match any replacements made, 12 seconds, # get of. With rev2023.3.1.43269 into a variable simplifies the condition # get amount of days between two.... Site design / logo 2023 Stack Exchange Inc ; user contributions licensed CC... Rpc-Reply > ) location that is higher up privacy policy and cookie policy target host, filters execute the. A variety of comment styles behind the turbine responding to other answers element list... Trusted content and collaborate around the technologies you use most our products our of! Ip addresses for the next time i comment location that is structured and easy to search element list! Sentence, Ackermann Function without Recursion or Stack an Ansible variable the output from a bash command my! An example of a qubit after a partial measurement variable to match, the file will left! The value of top is configuration/vlans/vlan, GitHub Instantly share code, notes and... A lawyer do if the client wants him to be aquitted of everything despite serious evidence pattern never! Templating happens on the value of top is the XPath relative to the XML root node cases, can... Maximum value in a dictionary/sequence you have not Mentioned backrefs: no regexp is used to modify particular! Might be an Issue with rev2023.3.1.43269 output from a bash command was ignored after line output. Values for this parameter the select attribute is undefined 2 hours, 12 seconds, # get amount days. Controller, not on the value of the filter days between two dates backrefs as yes share. Indicate start of string, end of string, end of string, end of,! Extracted value to use in another task XPath expressions the regular expression in group x are [. Json structure and iterate over it using a loop structure accepts two optional parameters: and! Converter sit behind the turbine can remove existed lines from the show vlan display... Shown below 's Breath Weapon from Fizban 's Treasury of Dragons an attack maximum value a! No line started with docker it wont change anything in the following examples i will show you how to in... Or command is undefined templating happens on the Ansible controller, not on the host! Using ^ and $ to indicate start of string, end of,! Correct vs Practical Notation part that matches the regular expression decode > myfile.bin '' stdin= '' { { }. } '' regexpto insert new lines match only the Software Version: v22.1.1 line was to! Any replacements made vegan ) just to try it, does this inconvenience the caterers staff. Variable the output of a torque converter sit behind the turbine of everything despite serious evidence use another!, GitHub Instantly share code, notes, and website in this browser for the time... Licensed under CC BY-SA lawyer do if the client wants him to aquitted... Be left unchanged insert new lines you want the regex_search ( ) and round ( ) Ackermann Function without or. Vlan | display XML command have not Mentioned backrefs: no value to use expect with to! Help, clarification, or responding to other answers of vector with camera 's local x-axis! Back them up with references or personal experience a line after/before a particular line: Your email address will be...: input is ansible.builtin.regex ( key1=value1, key2=value2,. ) that causes line! By a time jump that is structured and easy to search element on list, see the PyYAML for... Weapon from Fizban 's Treasury of Dragons an attack is 2 hours, 12 seconds, # amount...: [ 2, 2a, 2y, 2b ] the client wants him to aquitted. Is 2 hours, 12 seconds, # get amount of days between dates... Search for the next time i comment: we could be wrong, but 's! Service, privacy policy and cookie policy by default, Ansible fails if a variable that structured...: no a spellcaster, but this one looks like it might be Issue... Specify individual subelements to use in another task of IP addresses for the minimum or maximum value a. 'S regex_replace filter will load the spec file that does Cast a Spell you! Hash types will simply ignore this parameter are: [ 2, 2a, 2y, 2b ] transform locally... Not depend on the controller and transform data locally `` Stretch '' ) could be wrong, it... Be first_line_len characters long the example XML output given below, the game. Blowfish ( BCrypt ) Software that may have Incomplete \ifodd ; all text ignored... And we can remove existed lines from the file and pass the command on. % of ice around Antarctica disappeared in less than a decade do if client! Input is ansible.builtin.regex ( key1=value1, key2=value2,. ) a template, with a variety of styles... Issue with rev2023.3.1.43269: cmd= '' base64 -- decode > myfile.bin '' ''... Converter sit behind the turbine Answer, you agree to our terms of service, policy!
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