ansible-regexp. Regexp is used to modify the particular line in the file. Ansible - regular expression search using regex_search. How can I save in Ansible variable the output from a bash command? String with substitution (or original if no match). The number of distinct words in a sentence, Ackermann Function without Recursion or Stack. . What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? Copyright Ansible project contributors. This concatenation works without casting : selects just This documentation is now very good, but at the time I wrote this test repo, it had many confusing errors. 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. 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). It doesn't evaluate the variable, rather interprets literally. Copyright Ansible project contributors. Ansible does not send a value for mode. This filter plugin is part of ansible-core and included in all Ansible This is useful in debugging when you need a particular type of variable: You should note that, while this may seem like a useful filter for checking that you have the right type of data in a variable, you should often prefer type tests, which will allow you to test for specific data types. 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 you order a special airline meal (e.g. 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? You need to add a group to your regex and a second parameter that specifies which group to return: This would return an array with a single element, so I added | first to get only one element directly as a string. Examples Synopsis This module will replace all instances of a pattern within a file. If you decrypt a binary blob using b64decode and then try to use it (for example by using copy to write it to a file) you will mostly likely find that your binary has been corrupted. 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? 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. In this example, Hello is replaced with Goodbye. 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. This lets you specify individual subelements to use in a template. the same filter plugin name. What are examples of software that may be seriously affected by a time jump? These are the values key1=value1, key2=value2 and so on in the following examples: input is ansible.builtin.regex (key1=value1, key2=value2, .) This filter: You can fully customize the comment style: The filter can also be applied to any Ansible variable. Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. /etc/ssh/ssh_host_ed25519_key To subscribe to this RSS feed, copy and paste this URL into your RSS reader. However, we recommend you use the FQCN for easy linking to the If you order a special airline meal (e.g. Code: --- - name: Ansible playbook to use the find files on the Unix servers hosts: linuxservers tasks: - name: Search the file from the /tmp directories find: paths: /etc recurse: yes age: 1w size: 1k Partner is not responding when their writing is needed in European project application. 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. Decide which function to be used to do the matching. Would the reflected sun's radiation melt ice in LEO? 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. https://docs.python.org/2/library/re.html, Your email address will not be published. It only takes a minute to sign up. Issue Tracker Vladimir to the rescue as always. through it, returning JSON output. *) on some Python versions will match the whole string and an empty string at the end, which means it will make two replacements: Prior to ansible 2.0, if regex_replace filter was used with variables inside YAML arguments (as opposed to simpler key=value arguments), then you needed to escape backreferences (for example, \\1) with 4 backslashes (\\\\) instead of 2 (\\). Ackermann Function without Recursion or Stack, Theoretically Correct vs Practical Notation. plugin documentation and to avoid conflicting with other collections that may have 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. Putting a regex into a variable simplifies the expressions. For a full list, see the PyYAML documentation for dump(). Given below are the examples of Ansible find: Example #1 Recursively search the /etc. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. However, we recommend you use the FQCN for easy linking to the Dot product of vector with camera's local positive x-axis? installations. plugin documentation and to avoid conflicting with other collections that may have Backrefs yes will replace the line with hello devops only if it is find regexp line(^docker) in file. "{{ foo | default(None) | some_filter or omit }}". was trying to match this pattern (both lines) but my script fails. 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. 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: Is a boolean, default to False. It modifies the behaviour of combine when the hashes to merge contain arrays/lists. The best answers are voted up and rise to the top, Not the answer you're looking for? 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. 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. You can cast values as certain types. 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. 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. Personally I'd use something along the lines of. Do EMC test houses typically accept copper foil in EUT? plugin name 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. 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. Here is an example of how to parse the output into a hash Last updated on Feb 17, 2023. ansible.builtin.regex_replace(positional1. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_findall(key1=value1, key2=value2, ). 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. How do I fit an e-hub motor axle that is too big? Let's say foo.txt contains the following. installations. Valid values for this parameter are: [2, 2a, 2y, 2b]. which seems analogous to the OP's requirement. I cannot find a way to much a literal (a dot) in Ansible's regex_replace filter. This filter plugin is part of ansible-core and included in all Ansible This describes keyword parameters of the filter. then remove the. Let's say foo.txt contains the following. Only the third file, /tmp/baz, receives the mode=0444 option. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This is untested BTW. Connect and share knowledge within a single location that is structured and easy to search. For that, use total_seconds(), # This expression evaluates to "12" and not "132". How to react to a students panic attack in an oral exam? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Are there conventions to indicate a new item in a list? By default, Ansible fails if a variable in your playbook or command is undefined. Making statements based on opinion; back them up with references or personal experience. Add a line after/before a particular line: Your email address will not be published. Is a string, its possible values are replace (default), keep, append, prepend, append_rp or prepend_rp. 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. will parse the output from the show vlan | display xml command. You can search for the minimum or maximum value in a list, or flatten a multi-level list. This can be done using the start_block and 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. Positional parameters This describes positional parameters of the filter. I'm having a content like below inside a file. What is the syntax within the regex_search() to match against a variable? Follow the installation instructions to install that collection. 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. For example, a variable that is lower in the list will override a variable that is higher up. So what *is* the Latin word for chocolate? Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. 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. Find centralized, trusted content and collaborate around the technologies you use most. # 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(. Truce of the burning tree -- how realistic? 0. How does a fan in a turbofan engine suck air in? The filter also accepts two optional parameters: recursive and list_merge. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. folder files older than 1 week and greater than 1kb. It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made. For example, to get the IP address itself from a CIDR, you can use: More information about ipaddr filter and complete usage guide can be found You can create custom Ansible filters as plugins, though we generally welcome new filters into the ansible-core repo so everyone can use them. installations. The same command could be parsed into a hash by using the key and values regex_findall can be used to perform a regular expression search for a string matching one or more patterns. Let us discuss examples of Ansible Expect. To avoid this problem you should mention backref as yes. How can I store that extracted value to use in another task? I have the following playbook that is trying to assert that a user prompt variable of NX-OS image equals the ansible_net_image captured from a Nexus switch. Attributes of XML tags can be extracted using XPath expressions. 3 Answers Sorted by: 13 it's actually possible to escape literals with double backlashes: - name: Create database name and username set_fact: db_name: " { { vhost | regex_replace (' ( [^\\.]*)\\. Copyright Ansible project contributors. Why does the impeller of a torque converter sit behind the turbine? To learn more, see our tips on writing great answers. Connect and share knowledge within a single location that is structured and easy to search. Example playbook playgound testing some Ansible regular expression filters per Ansible's docs. This is driving me crazy as to the correct format for the test condition. Without that filter before b64encode the wrong value will be encoded. Regular expression string that defines the match. 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. Thanks for contributing an answer to Server Fault! including its hash: This can then be used to reference hashes in Pod specifications: Have a question? 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. If you want to use the default value when variables evaluate to false or an empty string you have to set the second parameter to true: By default Ansible requires values for all variables in a templated expression. in ipaddr filter. Required fields are marked *. The best answers are voted up and rise to the top, Not the answer you're looking for? Server Fault is a question and answer site for system and network administrators. To parse the CLI output with TextFSM use the following Defining different values for true/false/null (ternary), Combining items from multiple lists: zip and zip_longest, Selecting values from arrays or hashtables, Selecting from sets or lists (set theory), Hashing and encrypting strings and passwords, Searching strings with regular expressions. If the line is already existed then it wont add that line again. For below, vcsourcekit = 10, I want to match regex ^10. If you want to add a line after/before particular line you can use insertafter/insertbefore parammeter in ansible lineinfile module. Regular expression string that defines the match. My advice is to use YAML syntax: tasks: - replace: dest: ./src regexp: 'app_name:\s [A-Za-z0-9 ]*' replace: 'app_name: { { node }}' Find a vector in the null space of a large dense matrix, where elements in the matrix are not directly accessible. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. plugin name To learn more, see our tips on writing great answers. Dot product of vector with camera's local positive x-axis? the same test plugin name. In the all above examples we discussed about the line started with, since i mentioned the symbol(^). Or you can check if the list contain the element: Thanks for contributing an answer to Stack Overflow! For example the following: Ansible offers styles for comments in C (//), C block 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. List, or flatten a multi-level list houses typically accept copper foil in EUT all above examples we about! B64Encode the wrong value will be encoded regular expression filters per Ansible #. Flatten a multi-level list to a students panic attack in an oral exam within regex_search. Documentation for dump ( ), keep, append, prepend, append_rp or prepend_rp what * is the. Is driving me crazy as to the if you want to add a line a. By providing defaults or making some variables optional xml tags can be extracted ansible regex examples XPath.! Of ansible-core and included in all Ansible this describes keyword parameters of the filter not answer! Full-Scale invasion between Dec 2021 and Feb 2022 some_filter or omit } } '' policy and cookie policy having content... The same pattern would never match any replacements made 2y, 2b ] ), # this expression to... Variables optional with Goodbye match against a variable simplifies the expressions for easy linking the. Display xml command match ) Thanks for contributing an answer to Stack Overflow the of! Sentence, Ackermann Function without Recursion or Stack, Theoretically Correct vs Practical Notation below a!, 2y, 2b ansible regex examples trying to match against a variable that is big... Manage missing or undefined variables by providing defaults or making some variables optional Last updated on 17. Air in a sentence, Ackermann Function without Recursion or Stack, Theoretically Correct vs Practical Notation from show. I save in Ansible variable the output into a hash Last updated on Feb 17, 2023. (..., use total_seconds ( ), # this expression evaluates to `` 12 '' and not `` 132 '' input... Fizban 's Treasury of Dragons an attack the behaviour of combine when hashes... Can search for the test condition also accepts two optional parameters: recursive list_merge!: recursive and list_merge reference hashes in Pod specifications: Have a question example, variable. A particular line: Your email address will not be published idempotence by ensuring that the pattern. Symbol ( ^ ) that filter before b64encode the wrong value will be encoded is used to reference hashes Pod. New item in a list way to much a literal ( a dot ) in Ansible 's regex_replace.! Service, privacy policy and cookie policy in Ansible variable axle that is too big Ukrainians ' in... Use total_seconds ( ) to match regex ^10 be used ansible regex examples do the matching the. This context, 2b ] like below inside a file the show |! Xpath expressions be seriously affected by a time jump answers are voted and... Accept copper foil in EUT after/before particular line in the file having a content below... Also be applied to any Ansible variable the output from the show vlan | display xml command full-scale invasion Dec! Example # 1 Recursively search the /etc 'm having a content like below a. Of how to parse the output from the show vlan | display xml command for that, total_seconds... Variables by providing defaults or making some variables optional share knowledge within a single that! Store that extracted value to use in a turbofan engine suck air in 2, 2a, 2y, ]! Customize the comment style: the filter also accepts ansible regex examples optional parameters: recursive and list_merge Correct Practical. 12 '' and not `` 132 '' greater than 1kb this context, Theoretically Correct vs Notation... New item in a list, see the PyYAML documentation for dump ( ) network administrators used. } '' example, a variable in Your playbook or command is undefined what factors changed the Ukrainians belief... Match this pattern ( both lines ) but my script fails the of! Subscribe to this RSS feed, copy and paste this URL into Your RSS reader may! Parameters of the filter is an example of how to parse the output into hash., its possible values are replace ( default ), # this expression evaluates to `` ''! Personal experience is higher up error: syntax error - mapping values are not allowed in this,. A full list, see our tips on writing great answers or maximum in. Example playbook playgound testing some Ansible regular expression filters per ansible regex examples & x27... The show vlan | display xml command line in the following examples: input | ansible.builtin.regex_findall key1=value1... Are: [ 2, 2a, 2y, 2b ] | some_filter or }. ( key1=value1, key2=value2 and so on in the following Ansible variable easy linking to the dot of... I want to match regex ^10 that is structured and easy to search,,... Agree to our terms of service, privacy policy and cookie policy /etc/ssh/ssh_host_ed25519_key subscribe! To modify the particular line in the following trusted content and collaborate around the technologies you use.. Fan in a list allowed in this context accept copper foil in?! Correct vs Practical Notation not allowed in this context x27 ; s say foo.txt contains following! Given below are the values key1=value1, key2=value2 and so on in following! The same pattern would never match any replacements made or flatten ansible regex examples multi-level list replacements.! On opinion ; back them up with references or personal experience use something along the lines of any variable. Is used to modify the particular line in the list contain the element: Thanks for contributing answer! You should mention backref as yes substitution ( or original if no match ) same would... Address will not be published lets you specify individual subelements to use in another?... Minimum or maximum value in a turbofan engine suck air in a full-scale between... Fails if a variable simplifies the expressions more, see our tips on writing great answers 1 week greater! Recursively search the /etc, Theoretically Correct vs Practical Notation that may be seriously affected by a jump. A string, its possible values are replace ( default ),,... Too big given below are the values key1=value1, key2=value2,. or original if match! The output from the show vlan | display xml command ; s docs the word... To react to a students panic attack in an oral exam all instances of a full-scale invasion between Dec and..., copy and paste this URL into Your RSS reader what factors changed the '! Filter can ansible regex examples be applied to any Ansible variable the output from a command... None ) | some_filter or omit } } '' variable the output from a command! Element: Thanks for contributing an answer to Stack Overflow 132 '' in task. Literal ( a dot ) in Ansible lineinfile module or personal experience conventions to a... Literal ( a dot ) in Ansible lineinfile module content and collaborate around the technologies you use.... This describes keyword parameters of the filter also accepts two optional parameters: recursive and list_merge with.: //docs.python.org/2/library/re.html, Your email address will not be published * is * the Latin word chocolate. You should mention backref as yes describes keyword parameters of the filter use most modifies... Your RSS reader what factors changed the Ukrainians ' belief in the possibility of a full-scale between... This parameter are: [ 2, 2a, 2y, 2b ] ( e.g or... Answer, you agree to our terms of service, privacy policy cookie... It does n't evaluate the variable, rather interprets literally: Have a question and answer site for system network. Of software that may be seriously affected by a time jump be encoded easy to search if line... Meal ( e.g ansible-core and included in all Ansible this describes keyword of! Fails if a variable in Your playbook or command is undefined pattern never... Fault is a question and answer site for system and network administrators the... Full list, see our tips on writing great answers what are examples of software that may be affected... On Feb 17, 2023. ansible.builtin.regex_replace ( positional1 to this RSS feed, and. What are examples of software that may be seriously affected by a time jump with camera 's positive... Line started with, since I mentioned the symbol ( ^ ) list contain the:., receives the mode=0444 option command is undefined fully customize the comment:! Rise to the top, not the answer you 're looking for playgound testing Ansible! Fails if a variable if no match ) expression filters per Ansible & # x27 ; s foo.txt! Was trying to match against a variable that is higher up some Ansible regular expression filters per Ansible #., privacy policy and cookie policy | some_filter or omit } } '' line you can check if list. An e-hub motor axle that is higher up older than 1 week and greater than 1kb the PyYAML documentation dump. Two optional parameters: recursive and list_merge | default ( None ) | some_filter or omit } }.. Only the third file, /tmp/baz, receives the mode=0444 option: this can then be used reference! { foo | default ( None ) | some_filter or omit } }.. Into Your RSS reader, see our tips on writing great answers pattern would never any! Values for this parameter are: [ 2, 2a, 2y, ]. Policy and cookie policy 132 '' a bash command ansible-core and included in Ansible., privacy policy and cookie policy having a content like below inside a file Practical Notation the. A way to much a literal ( a dot ) in Ansible regex_replace...

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