How to react to a students panic attack in an oral exam? the same filter plugin name. 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. The json_query filter lets you query a complex JSON structure and iterate over it using a loop structure. It doesn't evaluate the variable, rather interprets literally. output, use the parse_cli filter: The parse_cli filter will load the spec file and pass the command output Is email scraping still a thing for spammers. Ansible: regex to search for a specific string in list, The open-source game engine youve been waiting for: Godot (Ep. 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. 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. then remove the. The spec file above will return a JSON data structure that is a list of hashes 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? It only takes a minute to sign up. plugin documentation and to avoid conflicting with other collections that may have Another common use case for parsing CLI commands is to break a large command var: DeviceName: "switch.example.com" - name: Valdiate device name set_fact: switchname: " { {'false' if DeviceName | regex_search ('switch') else 'true'}}" delivers true for a switch and false for a server it seems to be your regular expression. :) I noticed that if I use the expression in a when clause then I need to place parentheses around the colon. Run: items is a dictionary of key-value pairs that map user-defined names to XPath expressions hashes. Regular expression string that defines the replacement. If you configure Ansible to ignore most undefined variables, you can mark some variables as requiring values with the mandatory filter. 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. Create parameter with yes, we used to create the file if the file is not existed. configuration in the value of top is the outer most container node, and vlan Enable the jinja2_native setting if you want the regex_search filter to always return None if it cannot find a match. 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. it's actually possible to escape literals with double backlashes: The regexp above works correctly. Would it Replace all the Matching Lines? For example ^(. the same test plugin name. 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. 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. 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: "". To parse the CLI output with TextFSM use the following rev2023.3.1.43269. Here is an example of how to parse the output into a hash This describes keyword parameters of the filter. How do I access variables of a host using dynamic inventory in a MongoDB database using Ansible playbook? These filters have migrated to the kubernetes.core collection. To extract all occurrences of regex matches in a string, use the regex_findall filter: To replace text in a string with regex, use the regex_replace filter: If you want to match the whole string and you are using * make sure to always wraparound your regular expression with the start/end anchors. Communication. Positional parameters This describes positional parameters of the filter. 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. Not all lists use key to designate keys and value to designate values. 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 tasks below give the same results. Below is an example of a valid spec file that Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. Save my name, email, and website in this browser for the next time I comment. Ansible lineinfile module is used to insert new lines at the end of the file or anywhere in the file. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Match literals with 'regex_replace' Ansible filter, The open-source game engine youve been waiting for: Godot (Ep. Other hash types will simply ignore this parameter. This filter has migrated to the community.general collection. I was trying to use expect with Ansible to automate package installation (in below example - uninstall). For examples, see jmespath examples. Delta is 2 hours, 12 seconds, # get amount of days between two dates. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. Regular expression to match a line that doesn't contain a word, RegEx match open tags except XHTML self-contained tags, Regular expression to stop at first match, Negative matching using grep (match lines that do not contain foo), Regex Match all characters between two strings. 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. The final result is a list of IP addresses for the hosts in group x. This describes the input of the filter, the value before | ansible.builtin.regex_findall. 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. Ansible regex with assert operator. a default with a value in a nested data structure (in other words, {{ foo.bar.baz | default('DEFAULT') }}) when you do not know if the intermediate values are defined. My advice is to use YAML syntax: tasks: - replace: dest: ./src regexp: 'app_name:\s [A-Za-z0-9 ]*' replace: 'app_name: { { node }}' Last updated on Feb 17, 2023. Here it will remove the line started with docker. in ipaddr filter. through formatted as JSON. 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. How do I specify a regex to search for the string name: bob - note that this should not match with name: bobby. For example: shell: cmd="base64 --decode > myfile.bin" stdin="{{ encoded }}". (.+)$', '\\1') }}_stg" The regexp above works correctly. The first capturing group extracts the first part of the URL until the first dot, the whole regex captures the whole URL. This describes positional parameters of the filter. 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. Why does the impeller of a torque converter sit behind the turbine? These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_search(key1=value1, key2=value2, ). 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. Not the answer you're looking for? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I have written following code but regular expression and storing the variable both have some issues. Input This describes the input of the filter, the value before | ansible.builtin.regex_search. If the line is already existed then it wont add that line again. You must manually install the jmespath dependency on the Ansible controller before using this filter. Connect and share knowledge within a single location that is structured and easy to search. Connect and share knowledge within a single location that is structured and easy to search. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The same command could be parsed into a hash by using the key and values i'm trying to use regex_search to match only the Software Version : v22.1.1 line. 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. Use the k8s_config_resource_name filter to obtain the name of a Kubernetes ConfigMap or Secret, 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. 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. Ansible selectattr filter is basically an inherited version of Jinja selectattr filter. In most cases, you can use the short In line parameter we have to add the line which is going to add in the file. With ansible lineinfile module we can remove existed lines from the file and we can replace the lines. These are the values key1=value1, key2=value2 and so on in the following example: input | ansible.builtin.regex_findall(key1=value1, key2=value2, ). Note: It does not depend on the value of the hash_behaviour setting in ansible.cfg. value using the same show vlan command. 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. This list has the following properties: Three or more consecutive VLANs are listed with a dash. Search in a string to extract the part that matches the regular expression. Thanks for contributing an answer to Server Fault! Use the vlan_parser filter to transform an unsorted list of VLAN integers into a See Why does the regex_search filter return None instead of an empty string? How did StorageTek STC 4305 use backing HDDs? and input is not ansible.builtin.regex (key1=value1, key2=value2, .). *)$' to '\^f\.\*o(\.\*)\$', # with path == 'nginx.conf' the return would be ('nginx', '.conf'), # with path == 'nginx.conf' the return would be 'nginx', # with path == 'nginx.conf' the return would be '.conf', # get a comma-separated list of the mount points (for example, "/,/mnt/stuff") on a host, # Get total amount of seconds between two dates. https://www.rogerperkin.co.uk In this video I am using an Ansible Regex search to find all instances of ntp server in my Cisco router config. Please don't ask multiple questions in one question, add a separate question for your second part. To learn more, see our tips on writing great answers. 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Ansible - regular expression search using regex_search. Ansible selectattr Example - Filter dictionary and select matching item. So what *is* the Latin word for chocolate? Would the reflected sun's radiation melt ice in LEO? For example to 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. What is the purpose of this D-shaped ring at the base of the tongue on my hiking boots? installations. "https://example.com/users/foo/resources/bar", 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 test Does string match regular expression from the start. This documentation is now very good, but at the time I wrote this test repo, it had many confusing errors. During lynx package uninstall manually, I get following prompt. 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, a variable that is lower in the list will override a variable that is higher up. Only the third file, /tmp/baz, receives the mode=0444 option. Input This describes the input of the filter, the value before | ansible.builtin.regex_replace. To learn more, see our tips on writing great answers. Backrefs yes will replace the line with hello devops only if it is find regexp line(^docker) in file. *)$' to '\^f\.\*o\(\.\*\)\$', # convert '^f.*o(. Can I use a vintage derailleur adapter claw on a modern derailleur. /etc/ssh/ssh_host_ed25519_key If you want to add the line before starting of the line, started with docker, you can put insertbefore. . How did StorageTek STC 4305 use backing HDDs? The main goal of the cooperative is striving to become a center of excellence and a reference point for software development. The value of top is the XPath relative to the XML root node. For below, vcsourcekit = 10, I want to match regex ^10. I'm also not sure if it's consitent with Ansible/Jinja2 best practice. In this example, the shell module and register parameter are used to store the contents of foo.txt in the "out" variable and the debug . To 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. For example, a variable that is lower in the list will override a variable that is higher up. installations. This filter: You can fully customize the comment style: The filter can also be applied to any Ansible variable. Does Cast a Spell make you a spellcaster? regex_replace even without specifying the collections: keyword. Follow the installation instructions to install that collection. 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) Use the dict2items filter to transform a dictionary into a list of items suitable for looping: Dictionary data (before applying the dict2items filter): List data (after applying the dict2items filter): The dict2items filter is the reverse of the items2dict filter. Jordan's line about intimate parties in The Great Gatsby? However, we recommend you use the FQCN for easy linking to the Jinja2 provides other mathematical functions like abs() and round(). I'm having a content like below inside a file. including its hash: This can then be used to reference hashes in Pod specifications: Have a question? 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. Decide which function to be used to do the matching. Is a string, its possible values are replace (default), keep, append, prepend, append_rp or prepend_rp. 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. that select elements. Has China expressed the desire to claim Outer Manchuria recently? 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? erbrito / regex_test.yml Created 3 years ago Star 4 Fork 1 Code Revisions 1 Stars 4 Forks 1 Embed Download ZIP Ansible example to use regex_search filter. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Has China expressed the desire to claim Outer Manchuria recently? Also the colon is causing the following error: syntax error - mapping values are not allowed in this context. However, we recommend you use the FQCN for easy linking to the