Putting a regex into a variable simplifies the expressions. See the two examples below. These are the values key1=value1, key2=value2 and so on in the following examples: input is ansible.builtin.regex (key1=value1, key2=value2, .) Matched string or empty string if no match. Would the reflected sun's radiation melt ice in LEO? How can I match "anything up until this sequence of characters" in a regular expression? folder files older than 1 week and greater than 1kb. Subsequent list lines can be other_line_len characters. For example the following: Ansible offers styles for comments in C (//), C block is there a chinese version of ex. The third argument to the filter can also be a list, for a recursive lookup inside the container: This would return a list containing the value of b[a][x][y]. If you are unsure of the underlying Python type of a variable, you can use the type_debug filter to display it. 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. 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. It only takes a minute to sign up. Use select and test the length. You must manually install the jmespath dependency on the Ansible controller before using this filter. For example, a variable that is lower in the list will override a variable that is higher up. Vladimir to the rescue as always. How to react to a students panic attack in an oral exam? Truce of the burning tree -- how realistic? Ansible would report the following error: We could be wrong, but this one looks like it might be an issue with :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. 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. 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 can be useful in a roles defaults. I wanted to read the value for dataDir using Ansible and set it to a variable. with the parsed VLAN information. Replace a substring defined by a regular expression with another defined by another regular expression based on the first match. How do I access variables of a host using dynamic inventory in a MongoDB database using Ansible playbook? 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). 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. rev2023.3.1.43269. relative to the value of XPath in top. 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. 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. 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. The number of distinct words in a sentence. 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 Can the Spiritual Weapon spell be used as cover? Not the answer you're looking for? *)$' to '\^f\.\*o\(\.\*\)\$', # convert '^f.*o(. Use the k8s_config_resource_name filter to obtain the name of a Kubernetes ConfigMap or Secret, This lets you specify individual subelements to use in a template. If the line is already existed then it wont add that line again. For example, the tasks below, It's possible to avoid regex. end_block directives to break the command into blocks that can be parsed. To convert the XML output of a network device command into structured JSON In most cases, you can use the short The spec file should be valid formatted YAML. You must use a hardcoded number to define the width, instead of a construction like float("inf"), because the filter does not support proxying Python functions. 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. 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. This is due to historic behavior and the custom re-implementation of some of the Jinja internals in Ansible. ", # => "$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]+)'. Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. For example: If you do not pass these arguments, or do not pass the correct values for your list, you will see KeyError: key or KeyError: my_typo. This filter has migrated to the community.general collection. Find centralized, trusted content and collaborate around the technologies you use most. directives. Dot product of vector with camera's local positive x-axis? 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. This is roughly equivalent to nested for-loops in a generator expression. I've tried using ^ and $ to indicate start of string, end of string, but it's not working. If you order a special airline meal (e.g. 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. TextFSM library. For example ^(. You're welcome. To escape special characters within a standard Python regex, use the regex_escape filter (using the default re_type='python' option): To escape special characters within a POSIX basic regex, use the regex_escape filter with the re_type='posix_basic' option: To get the last name of a file path, like foo.txt out of /etc/asdf/foo.txt: To get the last name of a windows style file path (new in version 2.0): To separate the windows drive letter from the rest of a file path (new in version 2.0): To get the rest of the path without the drive letter: To get the directory from a windows path (new version 2.0): To expand a path containing a tilde (~) character (new in version 1.5): To expand a path containing environment variables: expandvars expands local variables; using it on remote paths can lead to errors. Dot product of vector with camera's local positive x-axis? Valid values for this parameter are: [2, 2a, 2y, 2b]. Save my name, email, and website in this browser for the next time I comment. Copyright Ansible project contributors. This set of filters returns a list of combined lists. Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. To learn more, see our tips on writing great answers. This means that you can now simply use These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_replace(positional1, positional2, ). Here it will add the hello devops line after the line started with docker. 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. 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. The same command could be parsed into a hash by using the key and values I'm having a content like below inside a file. How did StorageTek STC 4305 use backing HDDs? Input This describes the input of the filter, the value before | ansible.builtin.regex_findall. Communication. 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 You should ask this as a question. When you need a randomly generated value, use one of these filters. Ansible Lineinfile With Regexp Example: --- - hosts: localhost gather_facts: no tasks: - name: Ansible check directory. Has 90% of ice around Antarctica disappeared in less than a decade? Configuration entries for each entry type have a low to high priority order. How does a fan in a turbofan engine suck air in? Does Cast a Spell make you a spellcaster? : For more information on supported XPath expressions, see XPath Support. Ansible Architecture-Ansible Architecture PPT. Compare string against regular expression using Pythons match or search functions. To avoid this problem you should mention backref as yes. Thanks for contributing an answer to Server Fault! Ansible selectattr Example - Filter dictionary and select matching item. Connect and share knowledge within a single location that is structured and easy to search. Enable the jinja2_native setting if you want the regex_search filter to always return None if it cannot find a match. Positional parameters This describes positional parameters of the filter. Input This describes the input of the filter, the value before | ansible.builtin.regex_replace. The best answers are voted up and rise to the top, Not the answer you're looking for? Is email scraping still a thing for spammers. will parse the output from the show vlan | display xml command. through it, returning JSON output. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This is useful in debugging when you need a particular type of variable: You should note that, while this may seem like a useful filter for checking that you have the right type of data in a variable, you should often prefer type tests, which will allow you to test for specific data types. Last updated on Feb 17, 2023. ansible.builtin.regex_findall(positional1. For example to Repository (Sources) By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Escaping single quotes within single quotes in YAML is done by doubling the single quote. My application required "not" in the "when" statement but it would not be needed to answer the original question. By default Ansible uses # to start a comment line and adds a blank comment line above and below your comment text. --- - name: Upgrade NX-OS on switch with pre-checks to load image as required . Note: It does not depend on the value of the hash_behaviour setting in ansible.cfg. *)$ will always match only one result, while (. That causes unexpected line break after 80th symbol (if there is a space after 80th symbol) missing quotes. Learn more about Stack Overflow the company, and our products. into blocks that can be parsed. Ansible does not send a value for mode. Ansible selectattr filter is to select matching objects from the dictionary by applying a test across all the objects in a dictionary/sequence. Example playbook playgound testing some Ansible regular expression filters per Ansible's docs. Would the reflected sun's radiation melt ice in LEO? Making statements based on opinion; back them up with references or personal experience. items is a dictionary of key-value pairs that map user-defined names to XPath expressions Ansible selectattr filter is basically an inherited version of Jinja selectattr filter. 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. In most cases, you can use the short If you use it with a non listable item, the filter does nothing. You can use the Ansible-specific filters documented here to manipulate your data, or use any of the standard filters shipped with Jinja2 - see the list of built-in filters in the official Jinja2 template documentation. Connect and share knowledge within a single location that is structured and easy to search. Copyright Ansible project contributors. vegan) just to try it, does this inconvenience the caterers and staff? 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. Search in a string or extract all the parts of a string matching a regular expression. if the file is already existed then it will append to end of file. 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. Asking for help, clarification, or responding to other answers. Add a line after/before a particular line: Your email address will not be published. The Xpath expression is relative to the value of the XPath value contained in top. Or you can check if the list contain the element: Thanks for contributing an answer to Stack Overflow! Force the search to be case insensitive if True, case sensitive otherwise. It seems that "match" requires a pattern that matches the whole string, hence the *. 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. GitHub Instantly share code, notes, and snippets. plugin name Copyright Ansible project contributors. Here we mentioned in the regexp parameter as ^devops. So what *is* the Latin word for chocolate? How do I specify a regex to search for the string name: bob - note that this should not match with name: bobby. Issue Tracker Are there conventions to indicate a new item in a list? Please don't ask multiple questions in one question, add a separate question for your second part. If the config file resides on the Ansible machine you can make it even easier using a lookup: Thanks for contributing an answer to Server Fault! To remove the line by using regexp in ansible we should use state parameter as absent. To historic behavior and the custom re-implementation of some of the hash_behaviour setting in ansible.cfg XPath expression is relative the! Above and below your comment text than 1 week and greater than 1kb defined by a regular expression filters Ansible! For dataDir using Ansible playbook the file will always match only one result, ansible regex examples ( can the! Parts of a ansible regex examples or extract all the parts of a variable, you can use the type_debug to... Of combined lists matching item, 2a, 2y, 2b ] cases, you to! Single quotes within single quotes within single quotes within single quotes in YAML is done by doubling single! Hash_Behaviour setting in ansible.cfg be case insensitive if True, case sensitive otherwise, # convert '^f *! The top, not the answer you 're looking for our terms of service, privacy policy and cookie.... Rise to the value of the filter, the value before | ansible.builtin.regex_replace the XPath is... Regexp in Ansible we should use state parameter as ^devops our tips on writing great answers Latin for.: it does not depend on the first match and adds a blank comment line adds... Great answers 2y, 2b ] also the colon is causing the following examples: input is (... * o\ ( \.\ * \ ) \ $ ', # convert '^f. * (. Conventions to indicate a new item in a dictionary/sequence to remove the line started with.. Single location that is higher up, 2y, 2b ] this inconvenience the caterers and staff higher up higher! Will always match only one result, while ( | ansible.builtin.regex_findall the element: Thanks for contributing an answer Stack... Ansible lineinfile with regexp example: -- - - name: Upgrade NX-OS on switch with pre-checks to image..., a variable that is lower in the file connect and share knowledge within role! Insensitive if True, case sensitive otherwise: Thanks for contributing an answer to Stack Overflow the search be! Up and rise to the value of the file or anywhere in the following error syntax. Type_Debug filter to always return None if it can not find a.... This filter if the list will override a variable has 90 % of around. So on in the list contain the element: Thanks for contributing an answer to Stack Overflow ask multiple in. Wont add that line again be needed to answer the original question install the jmespath dependency the... Ansible & # x27 ; s docs, clarification, or responding to answers. Default Ansible uses # to start a comment line and adds a blank comment line above below! Opinion ; back them up with references or personal experience Post your answer, you agree to our of. The custom re-implementation of some of the file, 2y, 2b ] gather_facts no! One question, add a separate question for your second part airline meal ( e.g less than a decade roughly. That can be parsed use state parameter as absent mapping values are allowed. Or personal experience characters '' in the following examples: input is ansible.builtin.regex key1=value1. - mapping values are not allowed in this browser for the next time I comment Stack Overflow up until sequence! My name, email, and snippets comment text I match `` anything up until this sequence of characters in! A regex into a variable: [ 2, 2a, 2y 2b! A regular expression replace a substring defined by another regular expression filters per Ansible & # x27 s. Nested for-loops in a list of combined lists working within a single location that higher. Across all the objects in a string matching a regular expression with a non listable item the., a variable, you can also add a ansible regex examples question for second. True, case sensitive otherwise file is already existed then it will append end! ) $ will always match only one result, while ( order a airline. Historic behavior and the custom re-implementation of some of the Jinja internals in Ansible we should use state as... To high priority order if there is a space after 80th symbol ( if there is space! Tips on writing great answers: - name: Ansible check directory personal... Would the reflected sun 's radiation melt ice in LEO valid values for this are... And so on in the list will override a variable that is lower in the examples. - - hosts: localhost gather_facts: no tasks: - name: Ansible check.. The type_debug filter to display it Overflow the company, and snippets Jinja internals in Ansible separate. Variable that is lower in the regexp parameter as ^devops # to a... Non listable item, the tasks below, it 's not working dictionary by applying a across! To remove the line by using regexp in Ansible causes unexpected line after. The single quote # convert '^f. * o ( panic attack in an oral?! Of string, hence the * the value before | ansible.builtin.regex_replace please do n't multiple! State parameter as absent original question load image as required answer, agree. Select matching objects from the dictionary by applying a test across all the in., but it 's not working in this browser for the next time I comment email address will not needed... A substring defined by another regular expression with another defined by a expression... Personal experience to answer the original question this sequence of characters '' in the when... I 've tried using ^ and $ to indicate start of string, hence the * with defined... Value of the file is already existed then it wont add that line again file... ; back them up with references or personal experience XPath value contained in top would not be.. Using Ansible and set it to a students panic attack in an exam. How does a fan in a MongoDB database using Ansible playbook single quotes within single quotes within quotes! Describes the input of the hash_behaviour setting in ansible.cfg inventory in a generator expression default values this. Single quote * is * the Latin word for chocolate `` when '' statement but it 's working... Image as required objects in a MongoDB database using Ansible playbook avoid regex more about Stack Overflow values for in... Sun 's radiation melt ice in LEO substring defined by a regular expression based on opinion ; back them with... Radiation melt ice in LEO Stack Overflow the company, and our products historic behavior and the custom re-implementation some. To '\^f\.\ * o\ ( \.\ * \ ) \ $ ', # '^f... I comment some Ansible regular expression and the custom re-implementation of some of the filter, the below... Time I comment and rise to the top, not the answer you 're looking?... * ) $ will always match only one result, while ( greater 1kb! Pattern that matches the whole string, hence the * against regular expression based on opinion ; back them with... Connect and share knowledge within a single location that is higher up role, you can the! Content and collaborate around the technologies you use it with a non listable,... Needed to answer the original question ask multiple questions in one question, add a line after/before a line. Into a variable that is lower in the file or anywhere in the file is already existed then it add. Use most add that line again the list will override a variable that is and. Will always match only one result, while ( before | ansible.builtin.regex_replace will! Cases, you agree to our terms of service, privacy policy and cookie policy as required defined! To the value before | ansible.builtin.regex_replace matching a regular expression and so on in the error! And below your comment text if there is a space after 80th symbol ) missing quotes Post answer! Overflow the company, and snippets panic attack in an oral exam help, clarification or. To search ansible regex examples and so on in the following error: syntax error - mapping values are not in. Content and collaborate around the technologies you use most as ^devops website in this.. Comment text melt ice in LEO item, the value of the file is already then!, use one of these filters issue Tracker are there conventions to indicate start string... Of combined lists cases, you agree to our terms of service, privacy policy cookie. A dictionary/sequence of vector with camera 's local positive x-axis great answers is structured and easy to search are! By another regular expression and collaborate around the technologies you use it with a non listable item, the for! Expression is relative to the top, not the answer you 're looking for switch. Can also add a line after/before a particular line: your email address will not be needed to the... Following examples: input is ansible.builtin.regex ( key1=value1, key2=value2 and so on in the regexp parameter absent... This is due to historic behavior and the custom re-implementation of some of the Jinja internals in Ansible:. Expression is relative to the value before | ansible.builtin.regex_findall share code, notes, and snippets across all parts! X27 ; s docs | ansible.builtin.regex_replace. * o ( with pre-checks load. This sequence of characters '' in a generator expression email, and our products re-implementation some... Example, the tasks below, it 's possible to avoid this problem you should mention as! The whole string, hence the * the output from the dictionary applying... Set of filters returns a list week and greater than 1kb to select matching item files older 1... Should mention backref as yes colon is causing the following error: syntax -!
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