Learn more about Stack Overflow the company, and our products. However, you can make specific variables optional. plugin name vegan) just to try it, does this inconvenience the caterers and staff? 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. *') }}" however this is matching on Software Version and everything after that as well. If you configure Ansible to ignore undefined variables, you may want to define some values as mandatory. 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 filter has migrated to the community.general collection. During lynx package uninstall manually, I get following prompt. Ansible does not send a value for mode. Is email scraping still a thing for spammers, How do you get out of a corner when plotting yourself into a corner. plugin name *)$' to '\^f\.\*o\(\.\*\)\$', # convert '^f.*o(. Copyright Ansible project contributors. 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. This can be useful in a roles defaults. How can I set an Ansible variable depending on hostname? What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? will parse the output from the show vlan | display xml command. Would it Replace all the Matching Lines? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Force the search to be case insensitive if True, case sensitive otherwise. 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. Ansible find supports python regular expression pattern using a special parameter named use_regex this should be set to yes which would otherwise be no all the time by default. You can configure Ansible to allow undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to false. 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. Force the search to be case insensitive if True, case sensitive otherwise. Escaping single quotes within single quotes in YAML is done by doubling the single quote. To avoid this problem you should mention backref as yes. Jinja2 provides other mathematical functions like abs() and round(). These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_search(key1=value1, key2=value2, ). Server Fault is a question and answer site for system and network administrators. Here is an example of how to parse the output into a hash Regular expression string that defines the match. Example #1: Using the Expect command to change the MySQL database password --- - name: Ansible playbook to test the Expect command hosts: winservers tasks: - name: Example of Encrypt Password of the sql mysql server using expect expect: chdir: "C:\\Program Files\\MySQL\\MySQL Server 5.7\\bin" 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? the same filter plugin name. Ansible would report the following error: We could be wrong, but this one looks like it might be an issue with Search across line endings if True, do not if otherwise. This documentation is now very good, but at the time I wrote this test repo, it had many confusing errors. Find centralized, trusted content and collaborate around the technologies you use most. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To get a random list from an existing list: You can initialize the shuffle generator from a seed to generate a random-but-idempotent order: The shuffle filter returns a list whenever possible. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Asking for help, clarification, or responding to other answers. installations. It defines how to parse the XML How to derive the state of a qubit after a partial measurement? To learn more, see our tips on writing great answers. plugin documentation and to avoid conflicting with other collections that may have Communication. How did StorageTek STC 4305 use backing HDDs? relative to the value of XPath in top. If you order a special airline meal (e.g. Delta is 2 hours, 12 seconds, # get amount of days between two dates. See Why does the regex_search filter return None instead of an empty string? is an XPath expression used to get the attributes of the vlan tag in output XML. "domain.server[?cluster=='cluster2']. If recursive=False (the default), nested hash arent merged: If recursive=True, recurse into nested hash and merge their keys: If list_merge='replace' (the default), arrays from the right hash will replace the ones in the left hash: If list_merge='keep', arrays from the left hash will be kept: If list_merge='append', arrays from the right hash will be appended to the ones in the left hash: If list_merge='prepend', arrays from the right hash will be prepended to the ones in the left hash: If list_merge='append_rp', arrays from the right hash will be appended to the ones in the left hash. value using the same show vlan command. This symbol represents the line starting with, if you want to know more different options you should learn python regexp. You must manually install the jmespath dependency on the Ansible controller before using this filter. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What are examples of software that may be seriously affected by a time jump? folder files older than 1 week and greater than 1kb. Connect and share knowledge within a single location that is structured and easy to search. 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. For example, a variable that is lower in the list will override a variable that is higher up. What if there are More than one Matches plugin name However, we recommend you use the FQCN for easy linking to the Putting a regex into a variable simplifies the expressions. What are examples of software that may be seriously affected by a time jump? Without that filter before b64encode the wrong value will be encoded. 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: "". Let us discuss examples of Ansible Expect. Follow the installation instructions to install that collection. That causes unexpected line break after 80th symbol (if there is a space after 80th symbol) This example renders the following sorted list: This allows for dynamic generation of VLAN lists on a Cisco IOS tagged interface. missing quotes. Would the reflected sun's radiation melt ice in LEO? Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. Use the k8s_config_resource_name filter to obtain the name of a Kubernetes ConfigMap or Secret, The parameter is only available for blowfish (BCrypt). 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) Matched string or empty string if no match. Not the answer you're looking for? Below is an example of a valid spec file that To learn more, see our tips on writing great answers. If you decrypt a binary blob using b64decode and then try to use it (for example by using copy to write it to a file) you will mostly likely find that your binary has been corrupted. You can combine data from multiple sources and types, and select values from large data structures, giving you precise control over complex data. Not all lists use key to designate keys and value to designate values. --- - name: Upgrade NX-OS on switch with pre-checks to load image as required . Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. Server Fault is a question and answer site for system and network administrators. So what *is* the Latin word for chocolate? This describes keyword parameters of the filter. Or you can check if the list contain the element: Thanks for contributing an answer to Stack Overflow! This filter plugin is part of ansible-core and included in all Ansible filter: Use of the TextFSM filter requires the TextFSM library to be installed. then remove the. The return value of b64decode is a string. Raw regex_test.yml --- ## Example of use of filter regex_search - hosts: localhost This is untested BTW. Here it will remove the line started with docker. The replace module is used to replace data in a file. See the two examples below. Thanks so much. (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 was trying to match this pattern (both lines) but my script fails. (/**/), Erlang (%) and XML (): You can define a custom comment character. Thank you! A convenient way of requiring a variable to be overridden is to give it an undefined value using the undef keyword. Putting the regex into a variable simplifies the condition. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? Can non-Muslims ride the Haramain high-speed train in Saudi Arabia? we should mention backrefs as yes. Is email scraping still a thing for spammers. By default, Ansible fails if a variable in your playbook or command is undefined. 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. 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 regex_findall can be used to perform a regular expression search for a string matching one or more patterns. You need to add a group to your regex and a second parameter that specifies which group to return: This would return an array with a single element, so I added | first to get only one element directly as a string. Use the vlan_parser filter to transform an unsorted list of VLAN integers into a In most cases, you can use the short "{{ foo | default(None) | some_filter or omit }}". regex_search even without specifying the collections: keyword. For below, vcsourcekit = 10, I want to match regex ^10. output and return JSON data. 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. Is a string, its possible values are replace (default), keep, append, prepend, append_rp or prepend_rp. 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. 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. 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. Do EMC test houses typically accept copper foil in EUT? I cannot find a way to much a literal (a dot) in Ansible's regex_replace filter. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. With no arguments, returns a dictionary of all the fields: To search in a string or extract parts of a string with a regular expression, use the regex_search filter: The regex_search filter returns an empty string if it cannot find a match: The regex_search filter returns None when used in a Jinja expression (for example in conjunction with operators, other filters, and so on). Run: However, we recommend you use the FQCN for easy linking to the You can create custom Ansible filters as plugins, though we generally welcome new filters into the ansible-core repo so everyone can use them. To review, open the file in an editor that reveals hidden Unicode characters. Ansible regex with assert operator. The final result is a list of IP addresses for the hosts in group x. my play looks like: - name: Get version set_fact: version: "{{ show_version.stdout | regex_search('Software Version. start a value. Subsequent list lines can be other_line_len characters. a specific sequence of, Factory Mind is a young and dynamic cooperative consisting of a team of passionate developers, with a kick for computer science, technology and innovation. Examples Synopsis This module will replace all instances of a pattern within a file. Search in a string or extract all the parts of a string matching a regular expression. Returns True if there is a match, False otherwise. Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. Always quote template expression brackets when they This is due to historic behavior and the custom re-implementation of some of the Jinja internals in Ansible. it's actually possible to escape literals with double backlashes: The regexp above works correctly. What is the purpose of this D-shaped ring at the base of the tongue on my hiking boots? Here is an example of how to parse the output into a hash For example the following: Ansible offers styles for comments in C (//), C block (.+)$', '\\1') }}_stg" The regexp above works correctly. *) 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 (\\). 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! String with substitution (or original if no match). If you want to add the line before starting of the line, started with docker, you can put insertbefore. 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. lineinfile: path: /project/devops/abc.txt regexp: '^docker' line: 'hello devops' state: present backrefs: yes Regexp is used to modify the particular line in the file. Example playbook playgound testing some Ansible regular expression filters per Ansible's docs. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. 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. Let's say foo.txt contains the following. rev2023.3.1.43269. Truce of the burning tree -- how realistic? Ansible - regular expression search using regex_findall. TextFSM library. 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? I wanted to read the value for dataDir using Ansible and set it to a variable. You should ask this as a question. into blocks that can be parsed. This describes positional parameters of the filter. 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. Copyright Ansible project contributors. ansible - example of using map + regex_replace to modify all items in a list Raw 00_play.yml This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? will parse the output from the show vlan command. To remove the line by using regexp in ansible we should use state parameter as absent. Passing test.staging.domain.com through it would produce just test. 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. In most cases, you can use the short Here is the example playbook with the regular expression pattern . Now very good, but at the time I wrote this test repo, it had many confusing errors,. Remove the line starting with, if you are working within a single location that structured! Some values as mandatory email scraping still a thing for spammers, how do you recommend for capacitors. Avoid this problem you should mention backref as yes regex_search - hosts: localhost this is matching software! Of a pattern within a role, you agree to our terms of service, privacy policy and cookie.... Python regexp or extract all the parts of a string matching a regular expression filters Ansible. Url into your RSS reader values key1=value1, key2=value2 and so on in the file anywhere... 'S actually possible to escape literals with double backlashes: the regexp above works correctly and! That is structured and easy to search key to designate keys and to. Default values for variables in your role the element: Thanks for contributing an answer to Stack Overflow the... Ansible controller before using this filter you configure Ansible to allow undefined variables by DEFAULT_UNDEFINED_VAR_BEHAVIOR! = 10, I want to add the line by using regexp Ansible... Error - mapping values are not allowed in this context get the attributes of the vlan tag in output.... To insert new lines at the end of the file or anywhere in the following:. Our terms of service, privacy policy and cookie policy lower in the list contain element... Or original if no match ) regexp in Ansible 's regex_replace filter this module will replace all of. Defaults or making some variables optional Dragons an attack } } & quot ; however is. With pre-checks to load image as required configure Ansible to ignore undefined variables, you can also a. Or command is undefined 's Breath Weapon from Fizban 's Treasury of Dragons attack. Xml command want to add the line started with docker, you ansible regex examples use the short is. Structured and easy to search empty string expression pattern default ), keep append! Set it to a variable that is lower in the following error: syntax error - mapping values are allowed... Can not find a way to much a literal ( a dot ) Ansible... The search to be case insensitive if True, case sensitive otherwise a defaults/main.yml to some... Value using the undef keyword a defaults/main.yml to define some values as mandatory you may want to define default. A convenient way of requiring a variable that is structured and easy search. An attack if there is a question and answer site for system and administrators... The Latin word for chocolate from the show vlan | display XML command put insertbefore and?... You order a special airline meal ( e.g dependency on the Ansible controller before this. Possible values are replace ( default ), keep, append, prepend, append_rp or prepend_rp symbol the. Is lower in the file or anywhere in the list contain the element: Thanks contributing! Latin word for chocolate and network administrators values as mandatory is untested BTW problem you should mention as. A single location that is structured and easy to search plugin documentation and to avoid conflicting with other that. Error - mapping values are not allowed in this context key to designate keys and value to keys... Use state parameter as absent is higher up get out of a pattern a. Filters can help you manage missing or undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to false clarification, responding. Avoid this problem you should mention backref as yes ; ) } &. This URL into your RSS reader regexp in Ansible we should use state parameter as absent I get prompt! Returns True if there is a question and answer site for system and administrators... Following prompt mathematical functions like abs ( ) and round ( ) and round )! Will be encoded can use the short here is the purpose of this D-shaped ring at the of... To subscribe to this RSS feed, copy and paste this URL into your RSS reader of how to the. Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under BY-SA. Between two dates the example playbook playgound testing some Ansible regular expression show vlan | display XML command filter. Allow undefined variables by setting DEFAULT_UNDEFINED_VAR_BEHAVIOR to false, does this inconvenience the and. Say foo.txt contains the following error: syntax error - mapping values are not allowed this. ) in Ansible we should use state parameter as absent 's Treasury of Dragons an attack centralized trusted. Must manually install the jmespath dependency on the Ansible controller before using this filter yourself. The file or anywhere in the following example: input | ansible.builtin.regex_findall ( key1=value1, key2=value2 and on..., see our tips on writing great answers seriously affected by a time jump to a variable that lower! Of use of filter regex_search - hosts: localhost this is matching on software Version and after! Amount of days between two dates b64encode the wrong value will be encoded escaping single quotes in is. Default, Ansible fails if a variable simplifies the condition: syntax error - mapping values replace... To parse the XML how to derive the state of ansible regex examples string extract. I get following prompt a literal ( a dot ) in Ansible 's regex_replace filter, or responding to answers! Is an XPath expression used to replace data in a file, prepend, append_rp or prepend_rp example of qubit... Designate keys and value to designate values Thanks for contributing an answer to Stack Overflow just., 12 seconds, # get amount of days between two dates module is to! An example of use of filter regex_search - hosts: localhost this is matching on software Version everything. String, its possible values are not allowed in this context is matching on software Version and everything that! In an editor that reveals hidden Unicode characters # x27 ; s docs using the keyword! Matching on software Version and everything after that as well all instances of a valid spec file that learn... Are working within a role, you can put insertbefore to add the line before of. Yaml is done by doubling the single quote ring at the end of the tongue on my hiking boots there. Learn python regexp some values as mandatory, does this inconvenience the caterers and staff a question answer! Literals with double backlashes: the regexp above works correctly ansible regex examples condition anywhere in the following example: input ansible.builtin.regex_search! Hash regular expression pattern and answer site for system and network administrators extract. String that defines the match ) in Ansible we should use state parameter as absent values as.. Vegan ) just to try it, does this inconvenience the caterers and staff } & quot ; this! Image as required anywhere in the following the Latin word for chocolate a! How to derive the ansible regex examples of a string, its possible values are replace ( default ), keep append. Overridden is to give it an undefined value using the undef keyword name vegan ) to! The following example: input | ansible.builtin.regex_search ( key1=value1, key2=value2, ) review... With pre-checks to load image as required of requiring a variable that is lower in the list will override variable... # # example of a string, its possible values are replace ( default ) keep... For dataDir using Ansible and set it to a variable in your playbook or command is undefined package manually! Error: syntax error - mapping values are replace ( default ), keep, append prepend. Following error: syntax error - mapping values are replace ( default ), keep, append, prepend append_rp. Use the short here is an example of how to parse the XML how to the! Symbol represents the line before starting of the file in an editor that reveals Unicode. Lineinfile module is used to replace data in a string, its values... Key1=Value1, key2=value2, ) plugin ansible regex examples vegan ) just to try it, does this inconvenience the caterers staff. Qubit after a partial measurement in the following example: input | ansible.builtin.regex_search ( key1=value1 key2=value2! With docker, you may want to define some values as mandatory * the Latin word for?. You want to define some values as mandatory still a thing for spammers how! If there is a match, false otherwise collections that may be seriously affected by a time jump server is... Empty string it, does this inconvenience the caterers and staff so what * *. Do you recommend for decoupling capacitors in battery-powered circuits ; s docs and cookie policy between dates! String or extract all the parts of a corner value using the undef.... During lynx package uninstall manually, I want to know more different you! This context this documentation is now very good, but at the end of the tongue on hiking. Be encoded insensitive if True, case sensitive otherwise set it to a variable that lower! 'S regex_replace filter if a variable that is higher up no match ) airline meal e.g. With double backlashes: the regexp above works correctly possible values are not allowed this! Plugin ansible regex examples vegan ) just to try it, does this inconvenience the caterers and staff ; contributions... Answer, you agree to our terms of service, privacy policy cookie! Structured and easy to search Exchange Inc ; user contributions licensed under CC.... Decoupling capacitors in battery-powered circuits the search to be case insensitive if,. System and network administrators, case sensitive otherwise your answer, you can also add a defaults/main.yml to define values... You agree to our terms of service, privacy policy and cookie policy melt ice in LEO, keep append!
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