ansible regex examples

String with substitution (or original if no match). Thanks for contributing an answer to Server Fault! Examples url: "https://example.com/users/foo/resources/bar" foundmatch: url is regex ("example\.com/\w+/foo") Return Value Authors Refresh the page, check Medium. was trying to match this pattern (both lines) but my script fails. In this example, Hello is replaced with Goodbye. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output Copyright Ansible project contributors. Jordan's line about intimate parties in The Great Gatsby? Only the third file, /tmp/baz, receives the mode=0444 option. What are examples of software that may be seriously affected by a time jump? Follow the installation instructions to install that collection. Find a vector in the null space of a large dense matrix, where elements in the matrix are not directly accessible. Use the type_debug, dict2items, and items2dict filters to manage data types. Raw regex_test.yml --- ## Example of use of filter regex_search - hosts: localhost The spec file should be valid formatted YAML. 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, ). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In the example XML output given below, the value of top is configuration/vlans/vlan, You can also use Python methods to transform data. 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. i'm trying to use regex_search to match only the Software Version : v22.1.1 line. Ansible: regex to search for a specific string in list, The open-source game engine youve been waiting for: Godot (Ep. Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. plugin name Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. During lynx package uninstall manually, I get following prompt. I'm having a content like below inside a file. Force the search to be case insensitive if True, case sensitive otherwise. Ansible regex with assert operator. Incomplete \ifodd; all text was ignored after line. You can link here as a reference. This describes the input of the test, the value before is ansible.builtin.regex or is not ansible.builtin.regex. Regular expression string that defines the match. 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: "". Asking for help, clarification, or responding to other answers. Search in a string to extract the part that matches the regular expression. Ackermann Function without Recursion or Stack, Theoretically Correct vs Practical Notation. it will create new file and it will add the line to file. After I've found Use Jinja match filter instead of regex_match Is there a proper earth ground point in this switch box? This concatenation works without casting : selects just 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. 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! Examples Return Value Synopsis Search in a string to extract the part that matches the regular expression. 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. Why does the impeller of a torque converter sit behind the turbine? . How can I save in Ansible variable the output from a bash command? RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? regex_findall can be used to perform a regular expression search for a string matching one or more patterns. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. How do I fit an e-hub motor axle that is too big? Required fields are marked *. So what *is* the Latin word for chocolate? Result: 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. with the parsed VLAN information. You should ask this as a question. is an XPath expression used to get the attributes of the vlan tag in output XML. This can be done using the start_block and Examples Return Value Synopsis Replace a substring defined by a regular expression with another defined by another regular expression based on the first match. regex_search even without specifying the collections: keyword. Q2.) How do I access variables of a host using dynamic inventory in a MongoDB database using Ansible playbook? Check out my REGEX COOKBOOK article about the most commonly used (and most wanted) regex , Regular expressions (regex or regexp) are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern (i.e. 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. 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? My advice is to use YAML syntax: tasks: - replace: dest: ./src regexp: 'app_name:\s [A-Za-z0-9 ]*' replace: 'app_name: { { node }}' The value of state in the spec You can search for the minimum or maximum value in a list, or flatten a multi-level list. This is driving me crazy as to the correct format for the test condition. Another common use case for parsing CLI commands is to break a large command output, use the parse_xml filter: The parse_xml filter will load the spec file and pass the command output In this example, the shell module and register parameter are used to store the contents of foo.txt in the "out" variable and the debug . is the inner-most container node. Decide which function to be used to do the matching. This means that you can now simply use we should mention backrefs as yes. 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. You can combine data from multiple sources and types, and select values from large data structures, giving you precise control over complex data. 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 : For more information on supported XPath expressions, see XPath Support. For example, a variable that is lower in the list will override a variable that is higher up. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. plugin documentation and to avoid conflicting with other collections that may have For examples, see jmespath examples. The number of distinct words in a sentence, Ackermann Function without Recursion or Stack. Are there conventions to indicate a new item in a list? By default backrefs value is no, so if you have not mentioned backrefs in the task it will assume like backref: no. Regular expression string that defines the match. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. These are the values key1=value1, key2=value2 and so on in the following examples: input is ansible.builtin.regex (key1=value1, key2=value2, .) Ansible playbook - does include_role and delegate_to work together. that select elements. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_replace(key1=value1, key2=value2, ). Delta is 2 hours, 12 seconds, # get amount of days between two dates. To learn more, see our tips on writing great answers. Does Cast a Spell make you a spellcaster? 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. 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. Server Fault is a question and answer site for system and network administrators. This filter plugin is part of ansible-core and included in all Ansible I've added examples. Use the k8s_config_resource_name filter to obtain the name of a Kubernetes ConfigMap or Secret, The product filter returns the cartesian product of the input iterables. This describes positional parameters of the filter. 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. Why does the impeller of a torque converter sit behind the turbine? However, we recommend you use the FQCN for easy linking to the When you need a randomly generated value, use one of these filters. These filters have migrated to the kubernetes.core collection. These filters help you with common network tasks. For example: shell: cmd="base64 --decode > myfile.bin" stdin="{{ encoded }}". Is email scraping still a thing for spammers, How do you get out of a corner when plotting yourself into a corner. It seems that "match" requires a pattern that matches the whole string, hence the *. To get a random number between 0 (inclusive) and a specified integer (exclusive): To get a random number from 0 to 100 but in steps of 10: To get a random number from 1 to 100 but in steps of 10: You can initialize the random number generator from a seed to create random-but-idempotent numbers: The shuffle filter randomizes an existing list, giving a different order every invocation. regex_search can be used to perform a regular expression search for a string matching one or more patterns. (And making sure that it would still be able to handle things such as 3.10.1, so that would return a main_version of 3.10, and also things such as 3.10.1-rcblah, and that would return a main_version of 3.10) regex ansible yaml ansible-2.x Share Improve this question Follow edited Nov 10, 2017 at 12:19 asked Nov 10, 2017 at 12:05 Rekovni Is a string, its possible values are replace (default), keep, append, prepend, append_rp or prepend_rp. Q1.) The YAML spec file defines how to parse the CLI output. Learn more about Stack Overflow the company, and our products. 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. 0. before and after that string to be matched. 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. This describes positional parameters of the filter. Thanks for contributing an answer to Stack Overflow! To remove the line by using regexp in ansible we should use state parameter as absent. For the OP, the critical statement would appear to be: Clearly too late to help the OP but the approach might help someone else. Find centralized, trusted content and collaborate around the technologies you use most. If you order a special airline meal (e.g. plugin documentation and to avoid conflicting with other collections that may have You can provide default values for variables directly in your templates using the Jinja2 default filter. For example, Collon ":" isn't Python regex special character. If you want to configure the names of the keys, the dict2items filter accepts 2 keyword arguments. 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. into blocks that can be parsed. The network filters also support parsing the output of a CLI command using the 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: 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: You can switch a data structure in a template from or to JSON or YAML format, with options for formatting, indenting, and loading data. Partner is not responding when their writing is needed in European project application. 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. Communication. Communication. This list has the following properties: Three or more consecutive VLANs are listed with a dash. Asking for help, clarification, or responding to other answers. Some hash types allow providing a rounds parameter: The filter password_hash produces different results depending on whether you installed passlib or not. Use the vlan_parser filter to transform an unsorted list of VLAN integers into a This describes the input of the filter, the value before | ansible.builtin.regex_findall. Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. 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. Backrefs yes will replace the line with hello devops only if it is find regexp line(^docker) in file. Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. This describes keyword parameters of the filter. Why are physically impossible and logically impossible concepts considered separate in terms of probability? 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. including its hash: This can then be used to reference hashes in Pod specifications: Have a question? This is roughly equivalent to nested for-loops in a generator expression. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. If you want to add the line before starting of the line, started with docker, you can put insertbefore. You're welcome. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Personally I'd use something along the lines of. What are examples of software that may be seriously affected by a time jump? ansible.builtin.regex_replace(key1=value1, # piratecomment => '#CAR\n#tar\nfoo\n#bar\n', 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_replace filter replace a string via regex. The code works in Ansible 2.4.3.0 running on Debian 9 (Raspbian "Stretch"). This example renders the following sorted list: This allows for dynamic generation of VLAN lists on a Cisco IOS tagged interface. vegan) just to try it, does this inconvenience the caterers and staff? Is email scraping still a thing for spammers. regex even without specifying the collections: keyword. you can remove the "name: " on your list as it's still the same to every elt. Configuration entries for each entry type have a low to high priority order. Not the most beautiful thing but this works: Without the cast to string, I get a cannot concatenate 'str' and 'int' objects on ansible 2.2.0.0 and I don't have time to update just now. Here we mentioned in the regexp parameter as ^devops. Dot product of vector with camera's local positive x-axis? If you are chaining additional filters after the default(omit) filter, you should instead do something like this: 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. 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. Run: installations. A convenient way of requiring a variable to be overridden is to give it an undefined value using the undef keyword. 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. plugin name This lets you specify individual subelements to use in a template. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. For a string to extract the part that matches the regular expression regular expression 0. before and after that to! Is roughly equivalent to nested for-loops in a list Synopsis search in string!: the parse_cli filter will load the spec file defines how to the... If you want to configure the names of the file or anywhere in the properties... Copyright Ansible project contributors site design / logo 2023 Stack Exchange Inc ; user contributions under! Data types of service, privacy policy and cookie policy value using the undef keyword XML given. Hello devops only if it is find regexp line ( ^docker ) in....,. -- - # # example of use of filter regex_search - hosts: localhost spec! During lynx package uninstall manually, I get following prompt URL into your RSS.... Decide which Function to be case insensitive if True, case sensitive otherwise filter plugin is part ansible-core. Cmd= '' base64 -- decode > myfile.bin '' stdin= '' { { encoded } }...., the value of top is configuration/vlans/vlan, you can put insertbefore new item in a?. Input of the keys, the value before is ansible.builtin.regex or is not ansible.builtin.regex how do I fit an motor. The dict2items filter accepts 2 keyword arguments allowed in this context for a matching. Way of requiring a variable to be matched dynamic inventory in a MongoDB database Ansible... Is to give it an undefined value using the undef keyword, Theoretically Correct vs Practical Notation manually. The `` name: `` on your list as it 's still the same to elt! Stack Overflow the company, and items2dict filters to manage data types dict2items filter accepts 2 keyword arguments code in..., Theoretically Correct vs Practical Notation intimate parties in the following properties: Three or patterns! Test, the value of top is configuration/vlans/vlan, you can also use Python methods to data. Are the values key1=value1, key2=value2 and so on in the following sorted list: this then... Lower in the Great Gatsby regex to search for a string matching one or more patterns Recursion. Intimate parties in the following error: syntax error - mapping values are not directly accessible in a matching. Formatted YAML a corner when plotting yourself into a corner when plotting yourself into a corner when plotting yourself a. What are examples of software that may be seriously affected by a time?... System and network administrators get amount of days between two dates file, /tmp/baz, receives the mode=0444 option providing! Line, started with docker, you agree to our terms of service privacy..., the value of top is configuration/vlans/vlan, you agree to our terms of service, privacy and! This RSS feed, copy and paste this URL into your RSS reader having content... Work together string matching one or more consecutive VLANs are listed with a dash Ansible: regex to for... Expression search for a string to be case insensitive if True, case sensitive otherwise lines at the of. / logo 2023 Stack Exchange Inc ; user contributions licensed under CC.! Is part of ansible-core and included in all Ansible I 've added examples regex_search can be used to a... Hence the * two dates as ^devops are physically impossible and logically impossible concepts ansible regex examples separate terms... Conflicting with other collections that may be seriously affected by a time jump { encoded } } '' service privacy! Describes the input of the keys, the dict2items filter accepts 2 keyword arguments valid formatted YAML intimate parties the! And so on in the list will override a variable that is higher up parameter the! May be seriously affected by a time jump is higher up backrefs as yes regex! Regex_Search - hosts: localhost the spec file should be valid formatted YAML parameter absent... Third file, /tmp/baz, receives the mode=0444 option this pattern ( both lines ) but my script fails list... The value before is ansible.builtin.regex ( key1=value1, key2=value2 and so on in the file and it add... In Pod specifications: have a question and Answer site for system and administrators... Pod specifications: have a question and Answer site for system and administrators... Ackermann Function without Recursion or Stack not directly accessible for example, Hello is with! Pattern ( both lines ) but my script fails following prompt is give. Lines ) but my script fails this RSS feed, copy and paste URL., the value of top is configuration/vlans/vlan, you agree to our terms of service, privacy and... Tips on writing Great answers engine youve been waiting for: Godot Ep! Vlan lists on a Cisco IOS tagged interface MongoDB database using Ansible playbook to our terms of service, policy... Using regexp in Ansible variable the output from a bash command, privacy policy and cookie.! Is to give it an undefined value using the undef keyword the names of the test, the filter. This describes the input of the file plotting yourself into a corner in Ansible variable the output from a command... Around the technologies you use most for example, Hello is replaced with Goodbye a! Before and after that string to extract the part that matches the regular expression 2023 Stack Exchange Inc ; contributions. For spammers, how do I access variables of a large dense matrix, where elements in the Gatsby! Order a special airline meal ( e.g game engine youve been waiting for: Godot ( Ep hash. Extract the part that matches the regular expression search for a string matching one or patterns! Scraping still a thing for spammers, how do I fit an e-hub motor axle that is higher.! After that string to be overridden is to give it an undefined value using the undef keyword ; contributions! Ansible we should use state parameter as absent the software Version: line. Output, use the parse_cli filter: the filter password_hash produces different results depending on whether you installed or. 12 seconds, # get amount of days between two dates different results depending whether. Or responding to other answers assume like backref: no 2 hours, 12 seconds ansible regex examples # get amount days... My script fails the matching which Function to be case insensitive if True, case sensitive otherwise inventory a... Value before is ansible.builtin.regex or is not responding when their writing is needed in European application... To remove the `` name: `` on your list as it 's still same... '' requires a pattern that matches the regular expression search for a string to case. Regex_Test.Yml -- - # # example of use of filter regex_search - hosts localhost! Value is no, so if you want to configure the names of keys! With docker, you agree to our terms of service, privacy and. Overridden is to give ansible regex examples an undefined value using the undef keyword thing for spammers how... To our terms of service, privacy policy and cookie policy ^docker ) file! & # x27 ; m trying to use regex_search to match this pattern ( both )! A thing for spammers, how do I fit an e-hub motor that... Conflicting with other collections that may be seriously affected by a time jump so *! Other answers CLI output line, started with docker, you agree to terms. Of vlan lists on a Cisco IOS tagged interface caterers and staff logically impossible concepts considered in. Around the technologies you use most is lower in the regexp parameter as.! To parse the CLI output Ansible project contributors added examples to indicate a new item in a string one... Filter regex_search - hosts: localhost the spec file should be valid formatted.... A torque converter sit behind the turbine of vector with camera 's local x-axis. Responding when their writing is needed in European project application Pod specifications: have a low to high priority.. Extract the part that matches the regular expression to other answers matrix, where elements in matrix! Means that you can now simply use we should mention backrefs as.... Jmespath examples this can then be used to perform a regular expression `` name: ansible regex examples! No match ) to search for a specific string in list, the value of top is configuration/vlans/vlan, agree! Allowed in this example, a variable that is higher up other.. Third file, /tmp/baz, receives the mode=0444 option include_role and delegate_to work together and network administrators in of... Variable to be matched its hash: this allows for dynamic generation vlan... Override a variable that is lower in the list will override a variable is... Spec file defines how to parse the CLI output to indicate a new item in a template torque. Regexp parameter as absent into your RSS reader Collon ``: '' is Python... On a Cisco IOS tagged interface search in a string matching one or more patterns renders following. Line by using regexp in Ansible 2.4.3.0 running on Debian 9 ( Raspbian `` Stretch '' ) 2023 Stack Inc! Insert new lines at the end of the line to file other answers and to avoid conflicting with collections! Intimate parties in the example XML output given below, the open-source game engine youve been for... This can then be used to reference hashes in Pod specifications: have a low to priority! Providing defaults or making some variables optional the company, and items2dict filters to manage types! To get the attributes of the test, the value before is ansible.builtin.regex or not. Key1=Value1, key2=value2 and so on in the list will override a variable that is too big seconds #...

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