I cannot find a way to much a literal (a dot) in Ansible's regex_replace filter. Follow the installation instructions to install that collection. rev2023.3.1.43269. 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). Ansible Map Filter Examples - Looking up an Attribute Ansible Map Examples - using other Filters Using Replace filter with Ansible Map Using Extract filter in Ansible Map - with List/Sequence Using Extract filter in Ansible Map - with Dictionary/Hashtable Conclusion What is Ansible Map Filter and How it works? regex_search even without specifying the collections: keyword. Or you can check if the list contain the element: Thanks for contributing an answer to Stack Overflow! will parse the output from the show vlan | display xml command. You can combine data from multiple sources and types, and select values from large data structures, giving you precise control over complex data. These are the values key1=value1, key2=value2 and so on in the following examples: input is ansible.builtin.regex (key1=value1, key2=value2, .) For below, vcsourcekit = 10, I want to match regex ^10. Ansible does not send a value for mode. If you are unsure of the underlying Python type of a variable, you can use the type_debug filter to display it. If you are chaining additional filters after the default(omit) filter, you should instead do something like this: To extract all clusters from this structure, you can use the following query: You can use a variable to make the query more readable. It modifies the behaviour of combine when the hashes to merge contain arrays/lists. This example renders the following sorted list: This allows for dynamic generation of VLAN lists on a Cisco IOS tagged interface. I'm having a content like below inside a file. Thanks so much. 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. This is driving me crazy as to the correct format for the test condition. 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. Last updated on Feb 17, 2023. In the all above examples we discussed about the line started with, since i mentioned the symbol(^). Copyright Ansible project contributors. You're welcome. Do EMC test houses typically accept copper foil in EUT? It only takes a minute to sign 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 (\\). if the file is already existed then it will append to end of file. 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]. Code: --- - name: Ansible playbook to use the find files on the Unix servers hosts: linuxservers tasks: - name: Search the file from the /tmp directories find: paths: /etc recurse: yes age: 1w size: 1k Ansible: regex to search for a specific string in list, The open-source game engine youve been waiting for: Godot (Ep. 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. How did StorageTek STC 4305 use backing HDDs? This describes positional parameters of the filter. Jinja2 provides other mathematical functions like abs() and round(). Configuration entries for each entry type have a low to high priority order. 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. 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. EDIT: One of these ( also untested ) might be more correct. Story Identification: Nanomachines Building Cities. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. sorted string list of integers according to IOS-like VLAN list rules. Other hash types will simply ignore this parameter. Filters can help you manage missing or undefined variables by providing defaults or making some variables optional. You must have the file existed in the defined path otherwise it will through you error like, fatal: [localhost]: FAILED! How can I match literals in Ansible regexp_replace filter? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The value of state in the spec You can create custom Ansible filters as plugins, though we generally welcome new filters into the ansible-core repo so everyone can use them. Save my name, email, and website in this browser for the next time I comment. Delta is 2 hours, 12 seconds, # get amount of days between two dates. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How to combine multiple named patterns into one Cases? These are the values positional1, positional2 and so on in the following example: input | ansible.builtin.regex_replace(positional1, positional2, ). Why are physically impossible and logically impossible concepts considered separate in terms of probability? value using the same show vlan command. The crypt is used as a fallback if passlib is not installed. which seems analogous to the OP's requirement. output, use the parse_xml filter: The parse_xml filter will load the spec file and pass the command output 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. 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. However, you can make specific variables optional. Thanks for contributing an answer to Stack Overflow! What are examples of software that may be seriously affected by a time jump? Examples Return Value Synopsis Search in a string to extract the part that matches the regular expression. By default Ansible uses # to start a comment line and adds a blank comment line above and below your comment text. If you configure Ansible to ignore undefined variables, you may want to define some values as mandatory. How to derive the state of a qubit after a partial measurement? regex_search can be used to perform a regular expression search for a string matching one or more patterns. To print out the ports from cluster1 in a comma separated string: In the example above, quoting literals using backticks avoids escaping quotes and maintains readability. Stop by the google group! plugin documentation and to avoid conflicting with other collections that may have 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. In most cases, you can use the short the same filter plugin name. Input This describes the input of the filter, the value before | ansible.builtin.regex_search. This filter plugin is part of ansible-core and included in all Ansible regex_findall even without specifying the collections: keyword. This means that you can now simply use For that, use total_seconds(), # This expression evaluates to "12" and not "132". If you configure Ansible to ignore most undefined variables, you can mark some variables as requiring values with the mandatory filter. Putting the regex into a variable simplifies the condition. To avoid this problem you should mention backref as yes. Create parameter with yes, we used to create the file if the file is not existed. 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. Regular expression string that defines the replacement. 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. Parameters Attributes Notes Note As of Ansible 2.3, the dest option has been changed to path as default, but dest still works as well. The replace module is used to replace data in a file. Issue Tracker --- - name: Upgrade NX-OS on switch with pre-checks to load image as required . For example, a variable that is lower in the list will override a variable that is higher up. 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. This describes positional parameters of the filter. Issue Tracker Extracting part of the string using Ansible regex_search and save the output as a variable, The open-source game engine youve been waiting for: Godot (Ep. will parse the output from the show vlan command. Here we mentioned in the regexp parameter as ^devops. So what *is* the Latin word for chocolate? Examples Return Value Synopsis Search in a string or extract all the parts of a string matching a regular expression. plugin documentation and to avoid conflicting with other collections that may have was trying to match this pattern (both lines) but my script fails. The best answers are voted up and rise to the top, Not the answer you're looking for? You can provide default values for variables directly in your templates using the Jinja2 default filter. This documentation is now very good, but at the time I wrote this test repo, it had many confusing errors. Find a vector in the null space of a large dense matrix, where elements in the matrix are not directly accessible. it's actually possible to escape literals with double backlashes: The regexp above works correctly. Copyright Ansible project contributors. How can I improve the regular expression to get only /var/lib/zookeeper ? . See Why does the regex_search filter return None instead of an empty string? output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output Thank you! Ansible Lineinfile With Regexp Example: --- - hosts: localhost gather_facts: no tasks: - name: Ansible check directory. 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. If you order a special airline meal (e.g. However, we recommend you use the FQCN for easy linking to the I was trying to use expect with Ansible to automate package installation (in below example - uninstall). How can I store that extracted value to use in another task? It is up to the user to maintain idempotence by ensuring that the same pattern would never match any replacements made. Why does the regex_search filter return None instead of an empty string? 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. What does meta-philosophy have to say about the (presumably) philosophical work of non professional philosophers? To get a list combining the elements of other lists use zip: To always exhaust all lists use zip_longest: Similarly to the output of the items2dict filter mentioned above, these filters can be used to construct a dict: List data (before applying the zip filter): Dictionary data (after applying the zip filter): The subelements filter produces a product of an object and the subelement values of that object, similar to the subelements lookup. Has 90% of ice around Antarctica disappeared in less than a decade? Communication. Truce of the burning tree -- how realistic? 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. 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 roughly equivalent to nested for-loops in a generator expression. Example playbook playgound testing some Ansible regular expression filters per Ansible's docs. However, we recommend you use the FQCN for easy linking to the This can be useful in a roles defaults. Use the type_debug, dict2items, and items2dict filters to manage data types. Two separate "set_fact" stanzas are needed so that "keytype" is set before it is used. Asking for help, clarification, or responding to other answers. Here is an example of how to parse the output into a hash 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. output and return JSON data. ansible.builtin.regex_search(key1=value1, Protecting sensitive data with Ansible vault, Virtualization and Containerization Guides, Collections in the Cloudscale_ch Namespace, Collections in the Junipernetworks Namespace, Collections in the Netapp_eseries Namespace, Collections in the T_systems_mms Namespace, Controlling how Ansible behaves: precedence rules, ansible.builtin.regex_search filter extract regex match from string. This filter plugin is part of ansible-core and included in all Ansible ansible.builtin.regex_replace(key1=value1, # piratecomment => '#CAR\n#tar\nfoo\n#bar\n', Protecting sensitive data with Ansible vault, Virtualization and Containerization Guides, Collections in the Cloudscale_ch Namespace, Collections in the Junipernetworks Namespace, Collections in the Netapp_eseries Namespace, Collections in the T_systems_mms Namespace, Controlling how Ansible behaves: precedence rules, ansible.builtin.regex_replace filter replace a string via regex. Repository (Sources) UPDATE 10/2022: See further explanations/answers in story responses! 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 Ansible Map Filter does two things 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. plugin name regex_findall can be used to perform a regular expression search for a string matching one or more patterns. make the output of the ansible_managed variable more readable, we can Run: plugin name In most cases, you can use the short If you want to add the line before starting of the line, started with docker, you can put insertbefore. This describes the input of the filter, the value before | ansible.builtin.regex_search. You need to add a group to your regex and a second parameter that specifies which group to return: - set_fact: my_var: " { { zoo_config_content.stdout | regex_search ('dataDir= (.+)', '\\1') | first }}" This would return an array with a single element, so I added | first to get only one element directly as a string. directives. How can I save in Ansible variable the output from a bash command? 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. through formatted as JSON. 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 In line parameter we have to add the line which is going to add in the file. Ansible would report the following error: We could be wrong, but this one looks like it might be an issue with Connect and share knowledge within a single location that is structured and easy to search. 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. Subsequent list lines can be other_line_len characters. The YAML spec file defines how to parse the CLI output. Decide which function to be used to do the matching. /etc/ssh/ssh_host_ed25519_key Asking for help, clarification, or responding to other answers. I can't figure out how to escape the colon. 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. If you order a special airline meal (e.g. (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 Putting the regex into a variable simplifies the condition. Configuration entries for each entry type have a low to high priority order. Here it will remove the line started with docker. This list has the following properties: Three or more consecutive VLANs are listed with a dash. Ansible selectattr Example - Filter dictionary and select matching item. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. end_block directives to break the command into blocks that can be parsed. :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. 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.