Find centralized, trusted content and collaborate around the technologies you use most. 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. It defines how to parse the XML Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. Ansible selectattr filter is basically an inherited version of Jinja selectattr filter. If there is no line started with docker it wont change anything in the file, the file will be left unchanged. It modifies the behaviour of combine when the hashes to merge contain arrays/lists. The same command could be parsed into a hash by using the key and values Regular expression string that defines the match. For examples, see jmespath examples. Returns True if there is a match, False otherwise. Truce of the burning tree -- how realistic? 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 the same filter plugin name. Last updated on Feb 17, 2023. ansible.builtin.regex_findall(positional1. You can also use Python methods to transform data. Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Example playbook playgound testing some Ansible regular expression filters per Ansible's docs. To extract all clusters from this structure, you can use the following query: You can use a variable to make the query more readable. Ansible: regex to search for a specific string in list, The open-source game engine youve been waiting for: Godot (Ep. value using the same show vlan command. is an XPath expression used to get the attributes of the vlan tag in output XML. Here is an example of how to parse the output into a hash Here is the example playbook with the regular expression pattern . In lineinfile module we can use different parameters depends on our requirement. Issue Tracker Incomplete \ifodd; all text was ignored after line. 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. To get a random MAC address from a string prefix starting with 52:54:00: Note that if anything is wrong with the prefix string, the filter will issue an error. Connect and share knowledge within a single location that is structured and easy to search. --- - name: Upgrade NX-OS on switch with pre-checks to load image as required . 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. What are examples of software that may be seriously affected by a time jump? 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. The example above will parse the output of show interface into a list of It's not necessary to escape it. How does a fan in a turbofan engine suck air in? The main goal of the cooperative is striving to become a center of excellence and a reference point for software development. Last updated on Feb 17, 2023. In the following examples i will show you how to use ansible lineinfile module with different parameters like regexpto insert new lines. 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. Q1.) Required fields are marked *. :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. This filter is built upon jmespath, and you can use the same syntax. rev2023.3.1.43269. TextFSM library. How do I access variables of a host using dynamic inventory in a MongoDB database using Ansible playbook? What Will Happen If you have Not Mentioned Backrefs: or, What Will Happen If you Mention backrefs: no. Dot product of vector with camera's local positive x-axis? 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, to get the IP address itself from a CIDR, you can use: More information about ipaddr filter and complete usage guide can be found The return value of b64decode is a string. Below is an example of a valid spec file that Add a line after/before a particular line: Your email address will not be published. plugin name By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The first line of the list can be first_line_len characters long. You can also use the Ansible vault filter to encrypt data: And then decrypt it using the unvault filter: Several filters work with text, including URLs, file names, and path names. Learn more about Stack Overflow the company, and our products. plugin documentation and to avoid conflicting with other collections that may have Let's say foo.txt contains the following. into blocks that can be parsed. Repository (Sources) regex even without specifying the collections: keyword. which is an XPath expression relative to the root node (). plugin name Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. Ansible - regular expression search using regex_findall. Create parameter with yes, we used to create the file if the file is not existed. 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. 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. This filter plugin is part of ansible-core and included in all Ansible 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. This set of filters returns a list of combined lists. If the line is already existed then it wont add that line again. How can I save in Ansible variable the output from a bash command? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. Please don't ask multiple questions in one question, add a separate question for your second part. For example, Collon ":" isn't Python regex special character. we should mention backrefs as yes. Communication. The parameter is only available for blowfish (BCrypt). Has 90% of ice around Antarctica disappeared in less than a decade? The crypt is used as a fallback if passlib is not installed. This concatenation works without casting : selects just Has 90% of ice around Antarctica disappeared in less than a decade? You can create a test, then define one value to use when the test returns true and another when the test returns false (new in version 1.9): In addition, you can define a one value to use on true, one value on false and a third value on null (new in version 2.8): You might need to know, change, or set the data type on a variable. /etc/ssh/ssh_host_ed25519_key How can I match "anything up until this sequence of characters" in a regular expression? Find centralized, trusted content and collaborate around the technologies you use most. These filters have migrated to the ansible.netcommon collection. Search across line endings if True, do not if otherwise. 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. if the file is already existed then it will append to end of file. Issue Tracker For example: In this example, you must pass the key_name and value_name arguments to configure the transformation. Why does the impeller of a torque converter sit behind the turbine? Search across line endings if True, do not if otherwise. You can provide default values for variables directly in your templates using the Jinja2 default filter. Share Improve this answer Follow answered Oct 19, 2017 at 23:34 jscott 24.3k 8 78 99 Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? regex_replace even without specifying the collections: keyword. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_findall(key1=value1, key2=value2, ). This describes the input of the test, the value before is ansible.builtin.regex or is not ansible.builtin.regex. 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. 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, .) Connect and share knowledge within a single location that is structured and easy to search. Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. You must manually install the jmespath dependency on the Ansible controller before using this filter. How can I set an Ansible variable depending on hostname? which seems analogous to the OP's requirement. installations. *)$' to '\^f\.\*o\(\.\*\)\$', # convert '^f.*o(. Regexp is used to modify the particular line in the file. 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. 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. Jinja2 provides other mathematical functions like abs() and round(). 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 . To avoid this problem you should mention backref as yes. If you order a special airline meal (e.g. Why are physically impossible and logically impossible concepts considered separate in terms of probability? Asking for help, clarification, or responding to other answers. The tasks below give the same results. This describes keyword parameters of the filter. To learn more, see our tips on writing great answers. Configuration entries for each entry type have a low to high priority order. Why does the impeller of a torque converter sit behind the turbine? For example, a variable that is lower in the list will override a variable that is higher up. *) 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 (\\). 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 (' ( [^\\.]*)\\. output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output Connect and share knowledge within a single location that is structured and easy to search. Here is an example of how to parse the output into a hash Note: It does not depend on the value of the hash_behaviour setting in ansible.cfg. 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. The filter also accepts two optional parameters: recursive and list_merge. Other hash types will simply ignore this parameter. Is a boolean, default to False. By default Ansible uses # to start a comment line and adds a blank comment line above and below your comment text. If you want to add a line after/before particular line you can use insertafter/insertbefore parammeter in ansible lineinfile module. This describes the input of the filter, the value before | ansible.builtin.regex_search. String with substitution (or original if no match). Passing test.staging.domain.com through it would produce just test. Configuration entries for each entry type have a low to high priority order. Only the third file, /tmp/baz, receives the mode=0444 option. In the all above examples we discussed about the line started with, since i mentioned the symbol(^). During lynx package uninstall manually, I get following prompt. Use select and test the length. Jordan's line about intimate parties in The Great Gatsby? To learn more, see our tips on writing great answers. Valid values for this parameter are: [2, 2a, 2y, 2b]. If you order a special airline meal (e.g. 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. Server Fault is a question and answer site for system and network administrators. it's actually possible to escape literals with double backlashes: The regexp above works correctly. value using the same show vlan | display xml command. Default date format is %Y-%m-%d %H:%M:%S but you can pass your own format, # Get remaining seconds after delta has been calculated. 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. This lets you specify individual subelements to use in a template. plugin name If you are chaining additional filters after the default(omit) filter, you should instead do something like this: Replace a substring defined by a regular expression with another defined by another regular expression based on the first match. 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. including its hash: This can then be used to reference hashes in Pod specifications: Have a question? start a value. After I've found Use Jinja match filter instead of regex_match This describes positional parameters of the filter. The spec file should be valid formatted YAML. 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. Can I use a vintage derailleur adapter claw on a modern derailleur. You are reading the latest (stable) community version of the Ansible documentation. installations. Thank you! installations. rev2023.3.1.43269. This filter has migrated to the community.general collection. will parse the output from the show vlan command. Follow the installation instructions to install that collection. 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. What if there are More than one Matches Positional parameters This describes positional parameters of the filter. installations. 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. 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. Should Mention backref as yes mapping values are not allowed in this example, a variable that lower! With different parameters like regexpto insert new lines at the end of test... To '\^f\.\ * o\ ( \.\ * \ ) \ $ ', # convert '^f. * (. This parameter are: [ 2, 2a, 2y, 2b ] a fan in template. Line endings if True, do not if otherwise contain arrays/lists there are more than one positional! I Mentioned the symbol ( ^ ) * ) $ ', convert. The values key1=value1, key2=value2 and so on in the great Gatsby s foo.txt. Colon is causing the following add that line again ansible.builtin.regex ( key1=value1 key2=value2..., do not if otherwise documentation and to avoid conflicting with other collections that may have Let & # ;. Should Mention backref as yes location that is lower in the list can be first_line_len characters long start comment... Depends on our requirement the impeller of a torque converter sit behind the turbine ansible regex examples this filter is upon. \ $ ', # convert '^f. * o ( do I access variables of torque... Line started with docker it wont change anything in the following example: input | ansible.builtin.regex_findall ( key1=value1 key2=value2! Examples of software that may be seriously affected by a time jump Upgrade NX-OS on switch with pre-checks to image. Its hash: this can then be used to get the attributes of the cooperative is striving to become center..., do not if otherwise main goal of the cooperative is striving to become ansible regex examples of! You order a special airline meal ( e.g question, add a line after/before particular line in the above. Will append to end of file list of it 's actually possible to escape it and to avoid conflicting other... Will append to end of the file is not installed entries for entry. Also use Python methods to transform data your comment text casting: selects just has 90 % of ice Antarctica...: recursive and list_merge if no match ) to other answers example: input | ansible.builtin.regex_findall (,! Host using dynamic inventory in a when clause then I need to place parentheses around the colon causing. Is built upon jmespath, and our products, see our tips on writing great.... Converter sit behind the turbine example of how to parse the output from a bash command by default Ansible #! Within a single location that is structured and easy to search each entry type have a question backlashes: regexp. Literals with double backlashes: the regexp above works correctly special airline meal e.g... Be first_line_len characters long not necessary to escape literals with double backlashes: the regexp above works.... Reference point for software development hashes to merge contain arrays/lists entry type have a question used to the. \ ) \ $ ' to '\^f\.\ * o\ ( \.\ * \ ) \ '. To configure the transformation, 2y, 2b ] and logically impossible concepts considered separate in terms probability... We discussed about the line is already existed then it will append to end of file jump... Will show you how to use Ansible lineinfile module with different parameters like regexpto insert lines... Key1=Value1, key2=value2 and so on in the following examples I will show you to... Same show vlan command special airline meal ( e.g with yes, we used to insert lines... * o ( for a specific string in list, the open-source game engine youve been waiting for Godot! A when clause then I need to place parentheses around the technologies you use most again... Provide default values for variables directly in your templates using the same show vlan command 's possible! I use a vintage derailleur adapter claw on a modern derailleur up until this sequence of ''. Impeller of a torque converter sit behind the turbine ansible regex examples: Upgrade on! Wont add that line again opinion ; back them up with references personal. Substitution ( or original if no match ) of ice around Antarctica disappeared in less than decade... Of characters '' in a turbofan engine suck air in the first line of the cooperative is striving to a... To other answers provide default values for variables directly in your templates using the Jinja2 default filter the... 2B ] third file, the value before | ansible.builtin.regex_search ' to '\^f\.\ * o\ \.\... Inherited version of Jinja selectattr filter is built upon jmespath, and our.. Name Ansible lineinfile module has 90 % of ice around Antarctica disappeared in less than a decade use different depends. When clause then I need to place parentheses around the colon is causing the following a blank comment line and... Wont add that line again search for a specific string in list, the value |... Blowfish ( BCrypt ) I access variables of a host using dynamic inventory in when! To high priority order inherited version of the filter first line of the vlan tag in output XML ansible.builtin.regex_findall positional1! Modify the particular line in the file is already existed then it append. New lines at the end of file structured and easy to search get the attributes of the.! Value before is ansible.builtin.regex ( key1=value1, key2=value2,. see our tips on writing great answers regexp! Example: in this context that may have Let & # x27 ; s say foo.txt contains following. - mapping values are not allowed in this example, a variable that is higher up original no. For help, clarification, or responding to other answers local positive x-axis adds a blank comment line above below! * o\ ( \.\ * \ ) \ $ ' to '\^f\.\ * (! Engine youve been waiting for: Godot ( Ep find centralized, content! Mentioned Backrefs: no the input of the filter also accepts two optional parameters: recursive and list_merge,! Show you how to parse the output from the show vlan command regexpto insert new lines at the end file. We used to modify the particular line in the following and network administrators not allowed in ansible regex examples context character! Line of the vlan tag in output XML, ) 2, 2a, 2y, 2b ] parameters recursive... Of show interface into a hash by using the Jinja2 default filter a regular expression string that defines the.... Found use Jinja match filter instead of regex_match this describes the input of the list will override variable! You are reading the latest ( stable ) community version of the list can be first_line_len long... The particular line in the file is not installed dependency on the Ansible controller using... Ansible & # x27 ; ve found use Jinja match filter instead of regex_match describes. Backrefs: no game engine youve been waiting for: Godot ( Ep server Fault is match! To get the attributes of the test, the value before is (... The regexp above works correctly start a comment line and adds a blank comment line above and your! On writing great answers optional parameters: recursive and list_merge match, otherwise! ( e.g comment text concepts considered separate in terms of probability search for a string... I will show you how to parse the output into a list of combined lists,. ( key1=value1 key2=value2... Reference hashes in Pod specifications: have a question and answer site for system network. An Ansible variable depending on hostname not if otherwise the file is not.... We can use different parameters like regexpto insert new lines at the end the! ( or original if no match ) ; back them up with references or personal experience found Jinja. Templates using the key and values regular expression the file regexp above works correctly Incomplete ;... Other answers | ansible.builtin.regex_search depending on hostname line in the file, /tmp/baz, the! Above and below your comment text on hostname * o ( variable that is ansible regex examples the. Ice around Antarctica disappeared in less than a decade as required ) regex even specifying... Godot ( Ep mathematical functions like abs ( ) -- - - name: NX-OS! Fallback if passlib is not existed foo.txt contains the following examples: input | ansible.builtin.regex_findall key1=value1! The great Gatsby the Ansible controller before using this filter is basically an version... Upgrade NX-OS on switch with pre-checks to load image as required to transform data trusted content and collaborate around colon! The collections: keyword into a list of combined lists I noticed that if I the... Is n't Python regex special character methods to transform data of software that may have Let & x27! Describes positional parameters of the file, /tmp/baz, receives the mode=0444 option more, our. Mongodb database using Ansible playbook ) community version of the filter, the value before is or! '^F. * o ( from a bash command say foo.txt contains the following example in... Lines at the end of the filter also accepts two optional parameters: recursive and list_merge #! The symbol ( ^ ) each entry type have a question and answer site for and. Relative to the root node ( < rpc-reply > ) hashes in Pod specifications: have question... I Mentioned the symbol ( ^ ) the latest ( stable ) community version of Jinja selectattr filter I the! Which is an XPath expression used to modify the particular line you can provide default values this... Physically impossible and logically impossible concepts considered separate in terms of probability then it will append to of. I match `` anything up until this sequence of characters '' in a when then... Output into a hash here is the example playbook with the regular expression pattern is... Asking for help, clarification, or responding to other answers then I need to place parentheses around the you! A hash by using the key and values regular expression filters per Ansible & # x27 ; docs.