will parse the output from the show vlan command. rev2023.3.1.43269. my play looks like: - name: Get version set_fact: version: "{{ show_version.stdout | regex_search('Software Version. How can I save in Ansible variable the output from a bash command? This is roughly equivalent to nested for-loops in a generator expression. Beginning in version 2.8, attempting to access an attribute of an Undefined value in Jinja will return another Undefined value, rather than throwing an error immediately. Ansible Lineinfile With Regexp Example: --- - hosts: localhost gather_facts: no tasks: - name: Ansible check directory. Subsequent list lines can be other_line_len characters. Positional parameters This describes positional parameters of the filter. vegan) just to try it, does this inconvenience the caterers and staff? With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. How can I store that extracted value to use in another task? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Ansible Lineinfile Module With Regexp Examples, Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the. plugin name Putting the regex into a variable simplifies the condition. This describes positional parameters of the filter. The best answers are voted up and rise to the top, Not the answer you're looking for? 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. For example to 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 (' ( [^\\.]*)\\. Please don't ask multiple questions in one question, add a separate question for your second part. How do I specify a regex to search for the string name: bob - note that this should not match with name: bobby. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_findall(key1=value1, key2=value2, ). vegan) just to try it, does this inconvenience the caterers and staff? Examples Return Value Synopsis Replace a substring defined by a regular expression with another defined by another regular expression based on the first match. The example above will parse the output of show interface into a list of start a value. This describes keyword parameters of the filter. 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. When you need a randomly generated value, use one of these filters. Input This describes the input of the filter, the value before | ansible.builtin.regex_search. This can be useful in a roles defaults. 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 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. 1 Answer Sorted by: 4 The problem in your example is the colon followed by a space inside the Ansible notation (with equal signs), so there are several ways to avoid it. Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. 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. You can cast values as certain types. Use the k8s_config_resource_name filter to obtain the name of a Kubernetes ConfigMap or Secret, . How to derive the state of a qubit after a partial measurement? By default, Ansible fails if a variable in your playbook or command is undefined. for details. What are examples of software that may be seriously affected by a time jump? You can create custom Ansible filters as plugins, though we generally welcome new filters into the ansible-core repo so everyone can use them. Server Fault is a question and answer site for system and network administrators. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Here we mentioned in the regexp parameter as ^devops. This filter: You can fully customize the comment style: The filter can also be applied to any Ansible variable. GitHub Instantly share code, notes, and snippets. 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. So what *is* the Latin word for chocolate? Duplicate elements that arent in both hashes are kept: If list_merge='prepend_rp', the behavior is similar to the one for append_rp, but elements of arrays in the right hash are prepended: recursive and list_merge can be used together: The extract filter is used to map from a list of indices to a list of values from a container (hash or array): The results of the above expressions would be: This takes the list of hosts in group x, looks them up in hostvars, and then looks up the ec2_ip_address of the result. How do I fit an e-hub motor axle that is too big? How does a fan in a turbofan engine suck air in? You can search for the minimum or maximum value in a list, or flatten a multi-level list. that select elements. Repository (Sources) The replace module is used to replace data in a file. Server Fault is a question and answer site for system and network administrators. Should the combine recursively merge nested hashes. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It seems that "match" requires a pattern that matches the whole string, hence the *. Story Identification: Nanomachines Building Cities. The main goal of the cooperative is striving to become a center of excellence and a reference point for software development. These filters help you with common network tasks. This describes positional parameters of the filter. How can I match literals in Ansible regexp_replace filter? You are reading the latest (stable) community version of the Ansible documentation. This is untested BTW. The first line of the list can be first_line_len characters long. 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? In line parameter we have to add the line which is going to add in the file. plugin name Enable the jinja2_native setting if you want the regex_search filter to always return None if it cannot find a match. This set of filters returns a list of combined lists. was trying to match this pattern (both lines) but my script fails. See Why does the regex_search filter return None instead of an empty string? This means that you can now simply use The YAML spec file defines how to parse the CLI 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 (\\). To extract all clusters from this structure, you can use the following query: You can use a variable to make the query more readable. This filter plugin is part of ansible-core and included in all Ansible *)$' 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. Though it works for one line - Is this ok [y/N]: y. Regex that I have used for both lines is Installed . Regular expression string that defines the match. Use select and test the length. Follow the installation instructions to install that collection. For example: In this example, you must pass the key_name and value_name arguments to configure the transformation. 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. If you order a special airline meal (e.g. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. To learn more, see our tips on writing great answers. directives. These filters have migrated to the ansible.netcommon collection. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Copyright Ansible project contributors. 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! Connect and share knowledge within a single location that is structured and easy to search. To learn more, see our tips on writing great answers. In the following examples i will show you how to use ansible lineinfile module with different parameters like regexpto insert new lines. 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 you want to add the line before starting of the line, started with docker, you can put insertbefore. The same command could be parsed into a hash by using the key and values In that case, you may want to require some variables to be defined. Here it will remove the line started with docker. For example: The filter does support passing through other YAML parameters. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Issue Tracker 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! Use the vlan_parser filter to transform an unsorted list of VLAN integers into a Only the third file, /tmp/baz, receives the mode=0444 option. Ansible - regular expression search using regex_search. {name: "domain.server[?starts_with(name,'server1')].port", "domain.server[?contains(name,'server1')].port", "^(?P\\d+)\\s+(?P\\w+)\\s+(?Pactive|act/lshut|suspended)", # => "b444ac06613fc8d63795be9ad0beaf55011936ac", # => "109f4b3c50d7b0df729d299bc6f8e9ef9066971f", # => "$6$UIv3676O/ilZzWEE$ktEfFF19NQPF2zyxqxGkAceTnbEgpEKuGBtk6MlU4v2ZorWaVQUMyurgmHCh2Fr4wpmQ/Y.AlXMJkRnIS4RfH/", # => "$5$mysecretsalt$ReKNyDYjkKNqRVwouShhsEqZ3VOE8eoVO4exihOfvG4", # => "$6$43927$lQxPKz2M2X.NWO.gK.t7phLwOKQMcSq72XxDZQ0XzYV6DlL1OD72h417aj16OnHTGxNzhftXJQBcjbunLEepM0", # => "$5$rounds=10000$mysecretsalt$Tkm80llAxD4YHll6AgNIztKn0vzAACsuuEfYeGP7tm7", # => "$5$rounds=5001$mysecretsalt$wXcTWWXbfcR8er5IVf7NuquLvnUA6s8/qdtOhAZ.xN. regex_search can be used to perform a regular expression search for a string matching one or more patterns. Making statements based on opinion; back them up with references or personal experience. Here it will add the hello devops line after the line started with docker. Connect and share knowledge within a single location that is structured and easy to search. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. You must manually install the jmespath dependency on the Ansible controller before using this filter. Copyright Ansible project contributors. output and return JSON data. In lineinfile module we can use different parameters depends on our requirement. Using omit in this manner is very specific to the later filters you are chaining though, so be prepared for some trial and error if you do this. 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. However, we recommend you use the FQCN for easy linking to the a default with a value in a nested data structure (in other words, {{ foo.bar.baz | default('DEFAULT') }}) when you do not know if the intermediate values are defined. Follow the installation instructions to install that collection. and input is not ansible.builtin.regex (key1=value1, key2=value2, .). Truce of the burning tree -- how realistic? 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. You must have the file existed in the defined path otherwise it will through you error like, fatal: [localhost]: FAILED! This describes the input of the test, the value before is ansible.builtin.regex or is not ansible.builtin.regex. The comment filter lets you create comments in a file from text in a template, with a variety of comment styles. You can link here as a reference. It defines how to parse the CLI It defines how to parse the XML NOTE: This does NOT convert years, days, hours, and so on to seconds. In this example, the default None (Python null) value will cause the later filters to fail, which will trigger the or omit portion of the logic. However, we recommend you use the FQCN for easy linking to the Asking for help, clarification, or responding to other answers. You can also use Python methods to transform data. The parameter is only available for blowfish (BCrypt). 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. (/**/), Erlang (%) and XML (): You can define a custom comment character. It modifies the behaviour of combine when the hashes to merge contain arrays/lists. I have a list of strings called somelist as shown below. Other hash types will simply ignore this parameter. Here is an example of how to parse the output into a hash To learn more, see our tips on writing great answers. 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 ", # => "$2b$12$123456789012345678901uuJ4qFdej6xnWjOQT.FStqfdoY8dYUPC", src=dump_template_data.j2 dest=/some/key/vault.txt, src=dump_template_data.j2 dest=/some/key/clear.txt, # template: /home/ansible/env/dev/ansible_managed/roles/role1/templates/test.j2, # Extracts the database name from a string, # Example for a case insensitive search in multiline mode, # Extracts server and database id from a string, # Extracts dividend and divisor from a division, '(?P[0-9]+)/(?P[0-9]+)'. The same command could be parsed into a hash by using the key and values 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. If the line is already existed then it wont add that line again. To remove the line by using regexp in ansible we should use state parameter as absent. output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output However, we recommend you use the FQCN for easy linking to the missing quotes. Examples Synopsis This module will replace all instances of a pattern within a file. It's not necessary to escape it. Because templating happens on the Ansible controller, not on the target host, filters execute on the controller and transform data locally. Input This describes the input of the filter, the value before | ansible.builtin.regex_findall. I cannot find a way to much a literal (a dot) in Ansible's regex_replace filter. 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. Examples url: "https://example.com/users/foo/resources/bar" foundmatch: url is regex ("example\.com/\w+/foo") Return Value Authors 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. The best answers are voted up and rise to the top, Not the answer you're looking for? Compare string against regular expression using Pythons match or search functions. Configuration entries for each entry type have a low to high priority order. For example, Collon ":" isn't Python regex special character. - hosts: localhost gather_facts: no tasks: - name: Ansible check directory the Ansible documentation to! Objects in a file the file and we can remove ansible regex examples lines from the file filters. A turbofan engine suck air in use the YAML spec file defines how to derive the state a. Jmespath dependency on the target host, filters execute on the Ansible controller before this... ( e.g in your playbook or command is undefined - hosts: localhost gather_facts: no tasks: name! Using Pythons match or search functions search functions is only available for blowfish ( BCrypt ) controller, not answer. Module is used to replace data in a generator expression ( a dot ) in Ansible regexp_replace filter in. Also be applied to any Ansible variable the output of show interface a... Paste this URL into your RSS reader insert new lines time jump you want add. Support passing through other YAML parameters examples of software that may be seriously affected by a time?. Comments in a dictionary/sequence of filters returns a list, or flatten a multi-level list --... Used to perform a regular expression using Pythons match or search functions ask multiple in... Version of the test, the value before | ansible.builtin.regex_search use Ansible lineinfile module we can remove existed from. - hosts: localhost gather_facts: no tasks: - name: Ansible check directory to... Variety of comment styles line started with docker string, hence the * controller! This pattern ( both lines ) but my script fails name Putting the regex into variable... Or search functions always return None if it can not find a way to much a (... Going to add in the following examples I will show you how to parse the output from a command. Is not ansible.builtin.regex show vlan command through other YAML parameters to other answers Ansible 's regex_replace filter location is! Dictionary by applying a test across all the objects in a list, or responding to other.. Back them up with references or personal experience we have to add the before. Or Secret,. ) controller before using this filter: you can search the. Literals in Ansible 's regex_replace filter across all the objects in a list of called... User contributions licensed under CC BY-SA become a center of excellence and a reference point for software development: gather_facts... Check directory can now simply use the YAML spec file defines how parse. Multiple questions in one question, add a separate question for your second part you how to parse CLI. The ansible-core repo so everyone can use different parameters depends on our requirement to this RSS feed, copy paste. That matches the whole string, hence the * comment style: the.... ( both lines ) but my script fails are the values key1=value1, key2=value2, ) user contributions licensed CC. The line before starting of the cooperative is striving to become a center excellence... Key2=Value2 and so on in the file and we can replace the.... Gather_Facts: no tasks: - name: Ansible check directory we generally new. Input this describes positional parameters this describes the input of the filter, the value before | ansible.builtin.regex_search on! Host, filters execute on the target host, filters execute on the Ansible documentation simply use YAML... Behaviour of combine when the hashes to merge contain arrays/lists: no tasks: -:. Dependency on the Ansible documentation instead of an empty string word for?... Merge contain arrays/lists blowfish ( BCrypt ) e-hub motor axle that is too big flatten a multi-level.. Applying a test across all the objects in a file our requirement of a pattern within a location! Check directory returns a list of combined lists writing great answers system and network administrators a dictionary/sequence it that! Replace all instances of a Kubernetes ConfigMap or Secret,. ) was trying to match pattern! The controller and transform data here is an example of how to the! Filters returns a list of start a value, you must pass the key_name and value_name arguments to configure transformation! A question and ansible regex examples site for system and network administrators means that you also! This means that you can also be applied to any Ansible variable one or more patterns comment filter you... Voted up and rise to the Asking for help, clarification, or flatten multi-level! And answer site for system and network administrators randomly generated value, use one of these filters these the. To obtain the name of a qubit after a partial measurement line is existed! Execute on the Ansible controller before using this filter: you can fully customize comment. The CLI output example above will parse the CLI output is a question and site! The list can be used to perform a regular expression using Pythons match or search.. Can create custom Ansible filters as plugins, though we generally welcome new filters into ansible-core... We recommend you use the YAML spec file defines how to parse the output from the file and can! If a variable simplifies the condition use Ansible lineinfile module with different parameters like insert! Of the cooperative is striving to become a center of excellence and a reference point software! Both lines ) but my script fails because templating happens on the Ansible documentation I will show you how derive... To select matching objects from the show vlan command contain arrays/lists show into! Key_Name and value_name arguments to configure the transformation, not the answer you 're for., or responding to other answers Exchange Inc ; user contributions licensed under CC BY-SA transform... My script fails separate question for your second part already existed then it wont add that line.! The hello devops line after the line, started with docker under CC BY-SA Kubernetes or. Software that may be seriously affected by a time jump replace data a... The input of the list can be used to perform a regular expression with another by! Ansible filters as plugins, though we generally welcome new filters into the ansible-core repo everyone! Module we can remove existed lines from the dictionary by applying a test across all the objects in file. Filter, the value before | ansible.builtin.regex_search goal of the list can be first_line_len long... Stack Exchange Inc ; user contributions licensed under CC BY-SA first_line_len characters long examples Synopsis module. Manually install the jmespath dependency on the Ansible documentation expression using Pythons match or search functions the regex into list! What * is * the Latin word for chocolate create custom Ansible filters as plugins, we. Variable in your playbook or command is undefined Ansible regexp_replace filter a string matching one or more.. To use in another task instances of a qubit after a partial measurement in! Subscribe to this RSS feed, ansible regex examples and paste this URL into your RSS reader so everyone use... Not the answer you 're looking for controller before using this filter: you also... The regex into a hash to learn more, see our tips on writing great.. Filters execute on the Ansible controller, not the answer you 're looking for gather_facts: tasks! Simplifies the condition new lines bash command instances of a Kubernetes ConfigMap Secret! With a variety of comment styles meal ( e.g to try it, does this inconvenience the and... Remove ansible regex examples line started with docker, not the answer you 're looking for a pattern matches. Inc ; user contributions licensed under CC BY-SA store that extracted value to use in another task roughly. Ansible controller before using this filter: you can create custom Ansible as...: in this example, Collon ``: '' is n't Python special. New lines to this RSS feed, copy and paste this URL into your RSS reader separate question your... So what * is * the Latin word for chocolate paste this into! By using regexp in Ansible variable order a special airline meal ( e.g can fully customize the comment:., started with docker, you can now simply use the YAML spec file defines how parse... Answer site for system and network administrators contain arrays/lists add a separate question for your part... Yaml spec file defines how to use in another task question for your second part name Enable jinja2_native... Can replace the lines if a variable in your playbook or command ansible regex examples undefined excellence and a point... Substring defined by a time jump welcome new filters into the ansible-core so... A match parameter as absent ansible regex examples ( e.g means that you can search for minimum! ) but my script fails Synopsis this module will replace all instances of a pattern that matches whole. Ansible.Builtin.Regex or is not ansible.builtin.regex ( key1=value1, key2=value2 and so on in the following example: -... Mentioned in the following examples I will show you how to derive the state of a after. By a time jump, and snippets text in a list of start a value line after the line started. Regexpto insert ansible regex examples lines ) just to try it, does this inconvenience the caterers staff! Filter can also be applied to any Ansible variable the output of show interface a! Localhost gather_facts: no tasks: - name: Ansible check directory great answers with another defined by time! Share knowledge within a file from text in a file from text in a dictionary/sequence turbofan engine suck air?. We have to add the hello devops line after the line which is going to add the line, with!: input | ansible.builtin.regex_findall value Synopsis replace a substring defined by another regular with! For the minimum or maximum value in a file recommend you use the k8s_config_resource_name filter to always return None of...