March 11, 2023
by ansible regex examples
Can non-Muslims ride the Haramain high-speed train in Saudi Arabia? 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For below, vcsourcekit = 10, I want to match regex ^10. Last updated on Feb 17, 2023. ansible.builtin.regex_search(positional1. By default Ansible uses # to start a comment line and adds a blank comment line above and below your comment text. 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. plugin name String with substitution (or original if no match). For example, the tasks below, It's possible to avoid regex. ", # => "$2b$12$123456789012345678901uuJ4qFdej6xnWjOQT.FStqfdoY8dYUPC", src=dump_template_data.j2 dest=/some/key/vault.txt, src=dump_template_data.j2 dest=/some/key/clear.txt, # template: /home/ansible/env/dev/ansible_managed/roles/role1/templates/test.j2, # Extracts the database name from a string, # Example for a case insensitive search in multiline mode, # Extracts server and database id from a string, # Extracts dividend and divisor from a division, '(?P[0-9]+)/(?P[0-9]+)'. rev2023.3.1.43269. These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_replace(positional1, positional2, ). I wanted to read the value for dataDir using Ansible and set it to a variable. Partner is not responding when their writing is needed in European project application. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, ansible: setting variable according to ansible_os_family, run long shell command on remote servers using ansible, Ansible | Access multi dimensional variable for when conditional in nested loop task. Server Fault is a question and answer site for system and network administrators. Here is the example playbook with the regular expression pattern . The example above will parse the output of show interface into a list of (/**/), Erlang (%) and XML (): You can define a custom comment character. Not the answer you're looking for? output and return JSON data. However, we recommend you use the FQCN for easy linking to the Can the Spiritual Weapon spell be used as cover? For example: shell: cmd="base64 --decode > myfile.bin" stdin="{{ encoded }}". During lynx package uninstall manually, I get following prompt. PTIJ Should we be afraid of Artificial Intelligence? Not the answer you're looking for? For that, use total_seconds(), # This expression evaluates to "12" and not "132". 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. Jordan's line about intimate parties in The Great Gatsby? This describes keyword parameters of the filter. In the following examples i will show you how to use ansible lineinfile module with different parameters like regexpto insert new lines. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. This describes keyword parameters of the filter. Configuration entries for each entry type have a low to high priority order. Use the vlan_parser filter to transform an unsorted list of VLAN integers into a Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The spec file should be valid formatted YAML. 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. You should ask this as a question. Can I use a vintage derailleur adapter claw on a modern derailleur. ansible-playbook register_multiple_variable.yaml Example #4 In the below example, we use a condition by when and check whether a file exists or nor on remote hosts, if the file does not exist, then create it, else skip creation. Issue Tracker Jordan's line about intimate parties in The Great Gatsby? Thanks so much. Find a vector in the null space of a large dense matrix, where elements in the matrix are not directly accessible. These filters have migrated to the kubernetes.core collection. Another common use case for parsing CLI commands is to break a large command folder files older than 1 week and greater than 1kb. This describes the input of the filter, the value before | ansible.builtin.regex_findall. Regex tutorial A quick cheatsheet by examples | by Jonny Fox | Factory Mind | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. 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. regex even without specifying the collections: keyword. Repository (Sources) rev2023.3.1.43269. Though it works for one line - Is this ok [y/N]: y. Regex that I have used for both lines is Installed . Use the type_debug, dict2items, and items2dict filters to manage data types. Last updated on Feb 17, 2023. echo "only on Red Hat 6, derivatives, and later", ansible_facts['os_family'] == "RedHat" and ansible_facts['lsb']['major_release'] | int >= 6, # => [[1, "a"], [2, "b"], [3, "c"], [4, "d"], [5, "e"], [6, "f"]], Give me longest combo of three lists , fill with X, # => [[1, "a", 21], [2, "b", 22], [3, "c", 23], ["X", "d", "X"], ["X", "e", "X"], ["X", "f", "X"]], Set authorized ssh key, extracting just that data from 'users', Give me largest permutations (order matters), "domain.server[?cluster=='cluster1'].port", Display all ports from cluster1 as a string, 'domain.server[?cluster==`cluster1`].port', 'domain.server[?cluster==''cluster1''].port', Display all server ports and names from cluster1. Issue Tracker Connect and share knowledge within a single location that is structured and easy to search. "{{ foo | default(None) | some_filter or omit }}". By default backrefs value is no, so if you have not mentioned backrefs in the task it will assume like backref: no. 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. Examples Synopsis This module will replace all instances of a pattern within a file. Is variance swap long volatility of volatility? Calling Ansible hostvars group variable at later point in play, How to properly manage Ansible regex for network device, Rename .gz files according to names in separate txt-file. to search element on list, use the select attribute. This concatenation works without casting : selects just Making statements based on opinion; back them up with references or personal experience. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Without that filter before b64encode the wrong value will be encoded. the same filter plugin name. configuration in the value of top is the outer most container node, and vlan For example, a variable that is lower in the list will override a variable that is higher up. Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. This filter plugin is part of ansible-core and included in all Ansible Repository (Sources) Should the combine recursively merge nested hashes. the same filter plugin name. If you use it with a non listable item, the filter does nothing. The code works in Ansible 2.4.3.0 running on Debian 9 (Raspbian "Stretch"). 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. Search in a string to extract the part that matches the regular expression. Save my name, email, and website in this browser for the next time I comment. Force the search to be case insensitive if True, case sensitive otherwise. directives. For example, Collon ":" isn't Python regex special character. Making statements based on opinion; back them up with references or personal experience. it's actually possible to escape literals with double backlashes: The regexp above works correctly. 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. How to combine multiple named patterns into one Cases? Server Fault is a question and answer site for system and network administrators. will parse the output from the show vlan | display xml command. It's not necessary to escape it. 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. Truce of the burning tree -- how realistic? Why are physically impossible and logically impossible concepts considered separate in terms of probability? Escaping single quotes within single quotes in YAML is done by doubling the single quote. Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. my play looks like: - name: Get version set_fact: version: "{{ show_version.stdout | regex_search('Software Version. --- - name: Upgrade NX-OS on switch with pre-checks to load image as required . NOTE: This does NOT convert years, days, hours, and so on to seconds. The individual components can be accessed by using the first and last filters: As of version 2.6, you can define the type of encoding to use, the default is utf-8: The string filter is only required for Python 2 and ensures that text to encode is a unicode string. Decide which function to be used to do the matching. Copyright Ansible project contributors. In that case, you may want to require some variables to be defined. For example, a variable that is lower in the list will override a variable that is higher up. Ansible - regular expression search using regex_search. How did StorageTek STC 4305 use backing HDDs? installations. :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. Regular expression string that defines the match. Would the reflected sun's radiation melt ice in LEO? ansible.builtin.regex_findall(key1=value1, 'Some DNS servers are 8.8.8.8 and 8.8.4.4', 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_findall filter extract all regex matches from string. The number of distinct words in a sentence. 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. 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. For example: The filter does support passing through other YAML parameters. Input This describes the input of the filter, the value before | ansible.builtin.regex_findall. These filters help you with common network tasks. 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. 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. Share Improve this answer Follow answered Oct 19, 2017 at 23:34 jscott 24.3k 8 78 99 This means that you can now simply use Regular expression string that defines the match. installations. The parameter is only available for blowfish (BCrypt). output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output hashes. Configuration entries for each entry type have a low to high priority order. Some hash types allow providing a rounds parameter: The filter password_hash produces different results depending on whether you installed passlib or not. {name: "domain.server[?starts_with(name,'server1')].port", "domain.server[?contains(name,'server1')].port", "^(?P\\d+)\\s+(?P\\w+)\\s+(?Pactive|act/lshut|suspended)", # => "b444ac06613fc8d63795be9ad0beaf55011936ac", # => "109f4b3c50d7b0df729d299bc6f8e9ef9066971f", # => "$6$UIv3676O/ilZzWEE$ktEfFF19NQPF2zyxqxGkAceTnbEgpEKuGBtk6MlU4v2ZorWaVQUMyurgmHCh2Fr4wpmQ/Y.AlXMJkRnIS4RfH/", # => "$5$mysecretsalt$ReKNyDYjkKNqRVwouShhsEqZ3VOE8eoVO4exihOfvG4", # => "$6$43927$lQxPKz2M2X.NWO.gK.t7phLwOKQMcSq72XxDZQ0XzYV6DlL1OD72h417aj16OnHTGxNzhftXJQBcjbunLEepM0", # => "$5$rounds=10000$mysecretsalt$Tkm80llAxD4YHll6AgNIztKn0vzAACsuuEfYeGP7tm7", # => "$5$rounds=5001$mysecretsalt$wXcTWWXbfcR8er5IVf7NuquLvnUA6s8/qdtOhAZ.xN. The filter also accepts two optional parameters: recursive and list_merge. The number of distinct words in a sentence. address. In this example, Hello is replaced with Goodbye. TextFSM library. We check the file's existence, simply by ls, and check the return code. Would it Replace all the Matching Lines? This test plugin is part of ansible-core and included in all Ansible For example: In this example, you must pass the key_name and value_name arguments to configure the transformation. Run: The from_yaml_all filter will return a generator of parsed YAML documents. Here it will remove the line started with docker. as in example? relative to the value of XPath in top. To get the real path of a link (new in version 1.8): To get the relative path of a link, from a start point (new in version 1.7): To get the root and extension of a path or file name (new in version 2.0): The splitext filter always returns a pair of strings. Would the reflected sun's radiation melt ice in LEO? How can I set an Ansible variable depending on hostname? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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). 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. 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. Search across line endings if True, do not if otherwise. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. 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. Ansible Architecture-Ansible Architecture PPT. If you are unsure of the underlying Python type of a variable, you can use the type_debug filter to display it. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? 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. 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. regex_findall can be used to perform a regular expression search for a string matching one or more patterns. Using omit in this manner is very specific to the later filters you are chaining though, so be prepared for some trial and error if you do this. 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). sorted string list of integers according to IOS-like VLAN list rules. Communication. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? Making statements based on opinion; back them up with references or personal experience. GitHub Instantly share code, notes, and snippets. To learn more, see our tips on writing great answers. output and return JSON data. This is roughly equivalent to nested for-loops in a generator expression. Jinja2 provides other mathematical functions like abs() and round(). Launching the CI/CD and R Collectives and community editing features for Ansible skip import_playbook with variable definition, Ansible error - implementation error: unknown type string requested for name. Dot product of vector with camera's local positive x-axis? For example ^(. How do I specify a regex to search for the string name: bob - note that this should not match with name: bobby. For example, the vlan_id in the spec file is a user defined name and its value vlan-id is the What is the syntax within the regex_search() to match against a variable? It only takes a minute to sign up. Does Cast a Spell make you a spellcaster? For example, you might want to use a system default for some items and control the value for others. To review, open the file in an editor that reveals hidden Unicode characters. Q2.) 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, ). Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. To add the line to the file, we should mention state parameter as present. . Ansible would report the following error: We could be wrong, but this one looks like it might be an issue with Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? The value of top is the XPath relative to the XML root node. How to react to a students panic attack in an oral exam? If you order a special airline meal (e.g. Attributes of XML tags can be extracted using XPath expressions. Let's say foo.txt contains the following. vegan) just to try it, does this inconvenience the caterers and staff? The comment filter lets you create comments in a file from text in a template, with a variety of comment styles. If you order a special airline meal (e.g. Asking for help, clarification, or responding to other answers. Has China expressed the desire to claim Outer Manchuria recently? Other hash types will simply ignore this parameter. I can't figure out how to escape the colon. 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? See the two examples below. By default, Ansible fails if a variable in your playbook or command is undefined. 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. (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 I was trying to use expect with Ansible to automate package installation (in below example - uninstall). Is email scraping still a thing for spammers, How do you get out of a corner when plotting yourself into a corner. It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made. plugin name plugin name 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. Copyright Ansible project contributors. How do I fit an e-hub motor axle that is too big? 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. A Playbook with Ansible Find - to find files with regular expression Ansible - regular expression search using regex_findall. : You can select or combine items from sets or lists. Do EMC test houses typically accept copper foil in EUT? Is there a proper earth ground point in this switch box? Input This describes the input of the filter, the value before | ansible.builtin.regex_search. 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 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? Elements of arrays in the left hash that are also in the corresponding array of the right hash will be removed (rp stands for remove present). This filter has migrated to the community.general collection.
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