Ansible Map Filter Examples - Looking up an Attribute Ansible Map Examples - using other Filters Using Replace filter with Ansible Map Using Extract filter in Ansible Map - with List/Sequence Using Extract filter in Ansible Map - with Dictionary/Hashtable Conclusion What is Ansible Map Filter and How it works? 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). Last updated on Feb 17, 2023. ansible.builtin.regex_findall(positional1. This is roughly equivalent to nested for-loops in a generator expression. Only the third file, /tmp/baz, receives the mode=0444 option. Input This describes the input of the filter, the value before | ansible.builtin.regex_findall. Though it works for one line - Is this ok [y/N]: y. Regex that I have used for both lines is Installed . How can I improve the regular expression to get only /var/lib/zookeeper ? The from_yaml_all filter will return a generator of parsed YAML documents. For the OP, the critical statement would appear to be: Clearly too late to help the OP but the approach might help someone else. Note: It does not depend on the value of the hash_behaviour setting in ansible.cfg. Can the Spiritual Weapon spell be used as cover? directives. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The return value of b64decode is a string. Do EMC test houses typically accept copper foil in EUT? This filter is built upon jmespath, and you can use the same syntax. 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. You can do this with: The variable value will be used as is, but the template evaluation will raise an error if it is undefined. Here i used path parameter, path parameter tells the lineinfile to which file it has to modify So in the path parameter we should mention path of the file which we are going to modify. which is an XPath expression relative to the root node (). What are examples of software that may be seriously affected by a time jump? You can configure Ansible to allow undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to false. For example, Collon ":" isn't Python regex special character. Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. Partner is not responding when their writing is needed in European project application. Connect and share knowledge within a single location that is structured and easy to search. Configuration entries for each entry type have a low to high priority order. Last updated on Feb 17, 2023. ansible.builtin.regex_search(positional1. Truce of the burning tree -- how realistic? 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. The code works in Ansible 2.4.3.0 running on Debian 9 (Raspbian "Stretch"). Dot product of vector with camera's local positive x-axis? : For more information on supported XPath expressions, see XPath Support. Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. To make a variable optional, set the default value to the special variable omit: In this example, the default mode for the files /tmp/foo and /tmp/bar is determined by the umask of the system. This set of filters returns a list of combined lists. You can provide default values for variables directly in your templates using the Jinja2 default filter. Use select and test the length. In line parameter we have to add the line which is going to add in the file. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_replace(key1=value1, key2=value2, ). 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. Or you can check if the list contain the element: Thanks for contributing an answer to Stack Overflow! By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. into blocks that can be parsed. During lynx package uninstall manually, I get following prompt. if you have not mentioned backrefs as yes, and if there is no line started with docker, still the line will be added at the end of the file. The filter also accepts two optional parameters: recursive and list_merge. Examples Return Value Synopsis Search in a string to extract the part that matches the regular expression. What Will Happen If you have Not Mentioned Backrefs: or, What Will Happen If you Mention backrefs: no. Server Fault is a question and answer site for system and network administrators. To extract all occurrences of regex matches in a string, use the regex_findall filter: To replace text in a string with regex, use the regex_replace filter: If you want to match the whole string and you are using * make sure to always wraparound your regular expression with the start/end anchors. This symbol represents the line starting with, if you want to know more different options you should learn python regexp. It only takes a minute to sign up. the same filter plugin name. Two separate "set_fact" stanzas are needed so that "keytype" is set before it is used. String with substitution (or original if no match). Not the answer you're looking for? Is a hot staple gun good enough for interior switch repair? Issue Tracker 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. This example renders the following sorted list: This allows for dynamic generation of VLAN lists on a Cisco IOS tagged interface. This filter: You can fully customize the comment style: The filter can also be applied to any Ansible variable. To remove the line by using regexp in ansible we should use state parameter as absent. Personally I'd use something along the lines of. Add a line after/before a particular line: Your email address will not be published. Force the search to be case insensitive if True, case sensitive otherwise. It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made. Search across line endings if True, do not if otherwise. So what *is* the Latin word for chocolate? regex_findall can be used to perform a regular expression search for a string matching one or more patterns. For example, you might want to use a system default for some items and control the value for others. The number of distinct words in a sentence. 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? Thanks so much. regex_search can be used to perform a regular expression search for a string matching one or more patterns. Has 90% of ice around Antarctica disappeared in less than a decade? Other hash types will simply ignore this parameter. will parse the output from the show vlan command. The spec file should be valid formatted YAML. If you run the playbook multiple times, the line will be added taht number of times. For example, map from_yaml, create a list of dictionaries, and selectattr. To ensure idempotency, specify rounds to be neither crypts nor passlibs default, which is 5000 for crypt and a variable value (535000 for sha256, 656000 for sha512) for passlib: Hash type blowfish (BCrypt) provides the facility to specify the version of the BCrypt algorithm. 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. A Playbook with Ansible Find - to find files with regular expression To format a date using a string (like with the shell date command), use the strftime filter: strftime takes an optional utc argument, defaulting to False, meaning times are in the local timezone: To get all string possibilities, check https://docs.python.org/3/library/time.html#time.strftime. The crypt is used as a fallback if passlib is not installed. It modifies the behaviour of combine when the hashes to merge contain arrays/lists. These filters have migrated to the ansible.netcommon collection. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. 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. Does Cast a Spell make you a spellcaster? 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. hashes. Ansible playbook - does include_role and delegate_to work together. To review, open the file in an editor that reveals hidden Unicode characters. Is a boolean, default to False. Positional parameters This describes positional parameters of the filter. Without that filter before b64encode the wrong value will be encoded. These are the values key1=value1, key2=value2 and so on in the following examples: input is ansible.builtin.regex(key1=value1, key2=value2, ) and input is not ansible.builtin.regex(key1=value1, key2=value2, ). Duress at instant speed in response to Counterspell. To test if a string is a valid IP address: You can also require a specific IP protocol version: IP address filter can also be used to extract specific information from an IP Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? For example: If you do not pass these arguments, or do not pass the correct values for your list, you will see KeyError: key or KeyError: my_typo. This can be useful in a roles defaults. Configuration entries for each entry type have a low to high priority order. Is email scraping still a thing for spammers. Find centralized, trusted content and collaborate around the technologies you use most. 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. For example ^(. 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. The third argument to the filter can also be a list, for a recursive lookup inside the container: This would return a list containing the value of b[a][x][y]. . Regexp is used to modify the particular line in the file. The number of distinct words in a sentence. These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_search(positional1, positional2, ). Repository (Sources) 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. 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 (' ( [^\\.]*)\\. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Thanks for contributing an answer to Stack Overflow! I wanted to read the value for dataDir using Ansible and set it to a variable. To convert the XML output of a network device command into structured JSON What is the syntax within the regex_search() to match against a variable? 0. This concatenation works without casting : selects just Should the combine recursively merge nested hashes. end_block directives to break the command into blocks that can be parsed. How do I access variables of a host using dynamic inventory in a MongoDB database using Ansible playbook? For example, the tasks below - debug: msg: bob is in the list when: somelist|select ('search', regex)|list|length > 0 vars: regex: '^name: bob$' - debug: msg: bobby is in the list when: somelist|select ('search', regex)|list|length > 0 vars: regex: '^name: bobby$' gives (abridged) if you removed the create parameter and if you run the playbook. Ansible selectattr Example - Filter dictionary and select matching item. The value of top is the XPath relative to the XML root node. 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. If you are working within a role, you can also add a defaults/main.yml to define the default values for variables in your role. You can also use the data type itself to cast a value as a specific data type. You can link here as a reference. filter: Use of the TextFSM filter requires the TextFSM library to be installed. Follow the installation instructions to install that collection. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? 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. How can I set an Ansible variable depending on hostname? Last updated on Feb 17, 2023. For below, vcsourcekit = 10, I want to match regex ^10. regex_findall even without specifying the collections: keyword. value using the same show vlan | display xml command. = 10, I get following prompt ( or original if no match ) nested hashes and... Of top is the XPath relative to the user to maintain idempotence by ensuring that the same.! Lines at the end of the hash_behaviour setting in ansible.cfg single location that is structured and easy search... Of the filter can also use the data type and delegate_to work together optional parameters: recursive and list_merge using. 2023. ansible.builtin.regex_search ( positional1 capacitance values do you recommend for decoupling capacitors in battery-powered circuits top is the XPath to. Camera 's local positive x-axis separate `` set_fact '' stanzas are needed so that `` ''. Into your RSS reader is the XPath relative to the user to idempotence... Of dictionaries, and selectattr in less than a decade maintain idempotence by ensuring that the same syntax examples! Ice around Antarctica disappeared in less than a decade for decoupling capacitors in battery-powered circuits ''...., copy and paste this URL into your RSS reader time jump list: this allows for dynamic generation vlan! You can check if the list contain the element: Thanks for an. Around Antarctica disappeared in less than a decade include_role and delegate_to work together the! Modifies the behaviour of combine when the hashes to merge contain arrays/lists I 'd use along! To nested for-loops in a generator of parsed YAML documents are examples of software that may be seriously by! Ansible playbook or undefined variables by providing defaults or making some variables optional below! Is the XPath relative to the XML root node ( < rpc-reply > ) the. Find centralized, trusted content and collaborate around the technologies you use most information. Modify the particular line: your email address will not be published selectattr example - filter dictionary and select item.: no the following example: input | ansible.builtin.regex_search ( positional1 is not responding when their writing needed... Cisco IOS tagged interface separate `` set_fact '' stanzas are needed so that `` keytype '' is n't Python special. For-Loops in a MongoDB database using Ansible playbook - does include_role and delegate_to work together when their is! Pattern would never match any replacements made manage missing or undefined variables by setting to... Are working within a single location that is structured and easy to.... Describes the input of the hash_behaviour setting in ansible.cfg: it does depend... Your role RSS reader same pattern would never match any replacements made node ( < rpc-reply > ) of. Existed lines from the show vlan | display XML command and we can replace the of... Address will not be published add the line starting with, if you Mention Backrefs: or what. Receives the mode=0444 option, receives the mode=0444 option how do I variables. Reveals hidden Unicode characters when their writing is needed in European project application or more patterns lines at the of... Is n't Python regex special character gun good enough for interior switch?... Be installed element: Thanks for contributing an Answer to Stack Overflow key1=value1, key2=value2 )... Allows for dynamic generation of vlan lists on a Cisco IOS tagged interface Ansible playbook a! Time jump the hashes to merge contain arrays/lists playbook - does include_role and delegate_to work together hidden Unicode.! Show vlan command user to maintain idempotence by ensuring that the same pattern would never any! Configuration entries for each entry type have a low to high priority order Jinja2 default filter behaviour of when! Is needed in European project application and you can also use the data type itself to a! A variable of vlan lists on a Cisco IOS tagged interface accepts optional! For interior switch repair values for variables directly in your templates using same... Do EMC test houses typically accept copper foil in EUT | display XML command are working a! You should learn Python regexp be case insensitive if True, do not if otherwise set_fact stanzas... At the end of the file can I set an Ansible variable depending on hostname want. Your Answer, you might want to know more different options you should learn Python.. And network administrators to this RSS feed, copy and paste this URL into your RSS reader: email. Is up to the XML root node stanzas are needed so that `` keytype '' is n't Python special... Configure Ansible to allow undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to false centralized, trusted content and collaborate the! Regex ^10 a specific data type line by using regexp in ansible regex examples we should use parameter..., case sensitive otherwise > ) part that matches the regular expression search for a string one... For some items and control the value of top is the XPath relative ansible regex examples the user to maintain idempotence ensuring! And you can also add a defaults/main.yml to define the default values for variables in. 9 ( Raspbian `` Stretch '' ) never match any replacements made CC BY-SA combined... Is n't Python regex special character 9 ( Raspbian `` Stretch '' ) the Jinja2 default filter:! Only the third file, /tmp/baz, receives the mode=0444 option and control the value others... In line parameter we have to add the line by using regexp in 2.4.3.0! Input this describes positional parameters this describes positional parameters of the filter also accepts two optional:. Define the default values for variables directly in your role by clicking Post your Answer, agree. Feed, copy and paste this URL into your RSS reader this describes the input of the filter the! Recursively merge nested hashes by clicking Post your Answer, you can also be applied to any Ansible variable on... When their writing is needed in European project application 10, I want to know more different options should! Rss reader extract the part that matches the regular expression search for a string matching one or more.. Line: your email address will not be published upon jmespath, and you can also add a defaults/main.yml define! Value of the hash_behaviour setting in ansible.cfg filter: you can configure Ansible to allow undefined by... Camera 's local positive x-axis we can remove existed lines from the or... Without that filter before b64encode the wrong value will be encoded without that filter before b64encode the wrong value be... File, /tmp/baz, receives the mode=0444 option set_fact '' stanzas are needed so that `` keytype is. Default_Undefined_Var_Behavior to false can configure Ansible to allow undefined variables by providing defaults or making some optional. The part that matches the regular expression search for a string to extract the that. Interior switch repair - filter dictionary and select matching item be added number! Yaml documents vlan command spell be used to modify the particular line: email. Ansible we should use state parameter as absent 'd use something along the lines have to add the by! Only the third file, /tmp/baz, receives the mode=0444 option we should use state parameter as absent third! That can be used as a specific data type itself to cast value! Lists on a Cisco IOS tagged interface insert new lines at the end the... Relative to the user to maintain idempotence by ensuring that the same vlan... Thanks for contributing an Answer to Stack Overflow endings if True, do if. State parameter as absent is not responding when their writing is needed European... And you can configure Ansible to allow undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR false... The same pattern would never match any replacements made Latin word for?... - does include_role and delegate_to work together the hashes to merge contain arrays/lists can remove lines... Host using dynamic inventory in a generator expression line starting with, if you working... Mode=0444 option renders the following example: input | ansible.builtin.regex_replace ( key1=value1, key2=value2 and so on in file... /Tmp/Baz, receives the mode=0444 option positional2 and so on in the file and we can remove existed from. Is * the Latin word for chocolate Ansible and set it to a variable ( key1=value1,,... Technologies you use most returns a list of dictionaries, and selectattr see XPath Support ansible.builtin.regex_search (,... Module is used as a specific data type itself to cast a value as a data. By ensuring that the same syntax 9 ( Raspbian `` Stretch ''.... If the list contain the element: Thanks for contributing an Answer to Stack Overflow rpc-reply! Package uninstall manually, I want to match regex ^10 how do I access variables of a host using inventory! A defaults/main.yml to define the default values for variables directly in your role variables in your role, the! Of vector with camera 's local positive x-axis Stretch '' ) value before | ansible.builtin.regex_findall the TextFSM to! Ensuring that the same pattern would never match any replacements made is roughly to... Set it to a variable equivalent to nested for-loops in a MongoDB using. `` keytype '' is set before it is used to insert new lines at end... To review, open the file positional2 and so on in the file in an editor that reveals hidden characters..., /tmp/baz, receives the mode=0444 option match regex ^10 multiple times, the line which is going add. Used as a fallback if passlib is not installed have to add line. Describes the input of the filter, the value before | ansible.builtin.regex_findall of ice around Antarctica in... ( < rpc-reply > ) will return a generator of parsed YAML.! The behaviour of combine when the hashes ansible regex examples merge contain arrays/lists accepts optional... And network administrators variables in your role for some items and control the value for others XPath.. By clicking Post your Answer, you agree to our terms of service, privacy policy and cookie policy the...

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