Ansible replace string in json file. For state=absent, the pattern of the line(s) to remove. Strings can be used to store data, such as the name of a host or the path to a Replace character in a string with Ansible. They can also be used to create complex Ansible playbooks. Hot Network Questions Effect of drag on projectile flight Was just trying to apply this same logic to another regex_replace but the difference in my new one is that I want to find a string and replace with an integer, but whatever way I Unable to search string in json_query ansible module. Often these file operations need elevated privileges to copy or write to files due to the PowerShell restrictions. It operates on all occurrences within the file and is simpler, but it lacks control over specific Note. I would like to modify The regular expression to look for in every line of the file. How to replace specific word in Ansible with regex_replace. Replace/anonymize value in list of dict in Ansible. The module can do this fine, it just needs to be configured properly. If you want to ignore skipped results, you do that when you consume the resultsor you use something like the json_query filter I demonstrated, which doesn't require a loop and means you won't need to deal with skipped items. In most cases, you can use the short plugin name to_json. Only the last line found will be replaced. If the regular expression is not matched, the line will be added to the file in keeping with insertbefore or insertafter settings. json content: "{{ sample|to_json }}" gives. For Don't be confused by the fact that ansible-playbook prints debug messages in JSON encoded form, so some characters are escaped. Selecting JSON data: JSON queries . json_query filter lets you query a complex JSON structure and iterate over it using a loop structure. lineinfile: path: /etc/config/{{ Ansible Replace module - A Quick Summary. Ansible - replace line in file. 0. Idempotency should be properly represented in automation - it's important to know whether things actually changed. Assuming you have your variables accessible to ansible, you can loop over the list in a jinja2 template like this: Note. Technically, this means converting your files {{ ansible_host }}. Ansible and JMESPath, escape forward slash in a json_query. Straff, I would use win_powershell instead. e. set_fact: arg: \(-name "{{foo}}" \) You have correct Hello everyone 🙂 Since Ansible doesn’t currently have a proper way of editing json file, I’ve made some research and found several solutions, like this one. Improve this question. This module is part of ansible-base and included in all Ansible You must either add a leading zero so that Ansible's YAML parser knows it is an octal number (like 0644 or 01777) or quote it (like '644' or '1777') so Ansible receives a string and can do its The file is read using Ansible's lookup plugin with the 'file' parameter, which fetches the raw contents of the file. very large . 3. so for this example, I have the JSON above and in my conversion table I have the following terms: In which i need to loop over in ansible and each object in the JSON array each key / pair value I like to check if the key exists in the file and replace it with the value . json' recurse: yes register: files_to_change Selecting JSON data: JSON queries . yaml; It The pretty picture also lists all of the legitimate escape sequences within a JSON string: \" \\ \/ \b \f \n \r \t \u followed by four-hex-digits; Note that, contrary to the nonsense in Note. String: Test_[u'Net::Route Domain: Ansible String in Variable. replace - Replace all instances of a particular string in a file using a back-referenced regular expression. Passing the JSON as a string to helm, BUT not quoting it. because this json file is generated on the host), you can use the include_vars module to load the variables. but, of course, we need to use it along with few more commands and module like shell to read the json - name: Replace a string in a file ansible. I'd like to ask, how to replace special characters in ansible. Use ansible variable in replace string for regex_replace. sed or perl, depending on whether you just need string substitution or something more sophisticated, like arithmetic. yml (see this post for the differences). Replace a substring defined by a regular expression with another defined by another regular expression based on the first match. For state=present, the pattern to replace if found. ansible task using replace module runs ok but strings are not replaced. To solve the second part you could use the lineinfile module like this: - name: Ansible replace string example ansible. For state=absent, the As of Ansible 2. Ansible playbook json_query. copy says: If you need variable interpolation in copied files, use the ansible. It uses the replace module from Ansible's built-in library to perform this Using register in a loop will always register a result for every task iteration. Foreach methood. The from_json filter then parses these contents, converting them Converts a JSON string representation into an equivalent structured Ansible variable. I have a service for the JSON pipeline, so I guess this is the right place to do the replacement. Then, replace the file, e. Ansible is a powerful and flexible automation tool, capable of handling many complex tasks, including modifying files. - name: Find all files with extension . Using a variable Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Using Ansible, I want to replace a string in a json file. In this comprehensive guide, you‘ll learn how to install and use Ansible‘s json_query Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Using Ansible, I want to replace a string in a json file. In Ansible, a string is a sequence of characters enclosed in single or double quotes. - name: deploy release debug: msg: "{{backup_facts | replace(',world',',{{custom}}')}}" register: replace_csv in the above code, I am trying to replace a string/word in a variable with a variable. For the first part you can use variables like ansible_hostname and inventory_hostname, e. The easiest way is to define them in the inventory. If you can not do that (e. This option allows Ansible to fall back to unsafe methods of updating filesystem objects when atomic operations fail (however, it doesn’t force Ansible to perform unsafe writes). How to replace character in files with Ansible? 0. Follow asked Feb 29, 2020 at 1:45 Use ansible variable in replace string for regex_replace. Since you tried grep and awk, let's start with sed: In all lines that contain TEXT, replace foo with bar. test25. It seems Ansible has no similar module like xml for json, I'm using the jq cli tool. \\e[0m I tried replace The find module is able to give you the list of files, as you pointed it, based on this result, in order to act on this list, you will need to register the result of the find module. 0. template module. To select a single element or a data subset from a complex data structure in JSON format (for example, Ansible facts), use the community. Ansible provides many ways to work with JSON data, whether loading JSON files, generating JSON from tasks or modules, or querying JSON API responses. Ansible json_query filter. ORIG JSON FILE: { "servers": [ { " Ansible String in Variable. This module is part of ansible-core and included in all Ansible installations. json under folder and all sub folders find: paths: /var/log/conf/login/ patterns: '*. ' etc. Using with_items I can able to replace a string in all files but unable to use the register to check the file exists in the loop. sed -n '/TEXT/ s/foo/bar/ p' So in I recommend against find and sed in this case because you'll have to jump through hoops to make ansible aware of whether anything actually changed. When modifying a line the regexp should There's just a couple of minor issues in your playbook. Strings can be used to store data, such as the name of a host or the path to a file. json_query filter. This describes the input of the filter, the value 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. It uses the replace module from Ansible's built-in library to perform this string replacement. I'm using Ansible to automate some configuration steps for my application VM, but having difficult to insert a new key-value to an existing json file on the remote host. conf) if the files exist in the same directory. - copy: dest: sample. Upside: It will work with multiple chunk of path separated by spaces some path will give some/some_path. Ansible automatically converts JSON strings into variable structures in most contexts, use this To begin, create a variable (input) in Ansible that reads the JSON-formatted message from a file. replace: path: /path/to/file regexp: 'old_string' replace: 'new_string' This Ansible playbook search for a specific string, old_string in a file located at /path/to/file and replace it with a new string, \new_string. It can ensure a particular line is present The regular expression to look for in every line of the file. Use it in the content attribute of your copy task and you should have your desired output. One of the most common uses for strings in Ansible is to store data in variables. However, we recommend you use the Fully Qualified Collection Name (FQCN) ansible. Three of the key modules that Ansible provides for file modification are lineinfile, replace, and blockinfile. i can make it work, but its really cumbersome . Similarly, I want to replace the string in another 25 files (test2. json to templates I can replace a string in the file if the file exists in a directory. To select a single element or a data subset from a complex data structure in JSON format (for example, Ansible facts), use the . 0-4"}, "def": {"host": "xyz", Ansible provide multiple ways that you can use to replace a string, an entire line or words that match a certain pattern. ansible. Used to replace ALL instances of a matching String in a file ( Can be used to modify a Single Instance if you are sure that the destination file have only one matching string); More like Find All and Replace All; Backup Option is available Before modifying the file; Support Regular I am using regex_replace filter in ansible. So instead of using trim before splitting, we can trim each item after splitting the filenames with \r. – larsks I'm trying to change CISCOASA word here using the output I got. How to escape colon character in json query using ansible. fatal: [localhost]: FAILED! => msg: |- the field 'args' has an invalid value ({u'tojson': u'{{ notjson | but may be elsewhere in the file depending on the exact syntax problem. To go two levels down, for example, you need to follow the hierarchy of ansible. This Ansible playbook search for a specific string, old_string in a file located at /path/to/file and replace it with a new string, \new_string. Ansible replace text in file. regex_replace for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the Ansible replace text in file. PowerShell Replace value in JSON. I've tried using lineinfile module in ansible but the replacement is not in order. 10, The documentation for ansible. conf. replace – Replace all instances of a particular string in a file using a back-referenced regular expression Note This module is part of ansible-base and included in all Lookup file or slurp | from_json then combine and finally copy | to_nice_json is another way to go Dear all!, I have problems to understand how to modify a Json file in a playbook in order Wanting only the number, I did some experimenting using the replace() function and was able to strip the [ ] by adding the following: - set_fact: test_result: " {{ htmlres. There are two modules that you can use to achieve this: the replace module and the inline module. shell> cat sample. This filter plugin is part of ansible-core and included in all Ansible installations. Instead of your command/cat task, use this to load the data in: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog To answer your question Lola, yes good question and yes it would work, but you likely will run into problems with win_lineinfile since it's an in-line replacement and Configs can be more complex. When I print out the stdout in ansible Ihave escaped characters, which I want to remove from the output. Replace items in a list Given that linux does not by itself allow redirection to the same file, you can use the sponge utility from moreutils package - apt update && apt install -y moreutils - jq Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about We need to provide a double-quote escaped JSON string into AWS secrets for a nodeJS product. 2. txt. The structured data is in I was running into this particularly painful Ansible task of: Reading JSON from a file. path: /etc/config/{{ ansible_hostname }}_host/application. There is a to_json Jinja filter in Ansible that can do just that for you. The community. json; regex; ansible; Share. Ansible - replace using variables. IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption. You are loading the json data from the file as a string, rather than json/dict. However, we recommend you use so I'm currently facing a problem when writing a new Ansible Playbook. Say I have this json file: First of all you need to get those variables into ansible. Hot Network Questions Why don't we use HTML password inputfields for usernames and 2FA codes in the front-end of web applications? As of Ansible 2. 1. Using a variable in the content field will result in unpredictable output. conf, which is formatted like this: name: So the trim filter seems to be removing the final \r from the list of files on file3. 4. general. builtin. In most cases, you can use the short plugin name regex_replace. Use the `replace` module to create a new variable I am trying to replace the unnecessary words from the below string using regex_replace but unable to do to so for the last part of it. To read JSON file into the ansible playbook, ansible has given us a filter named from_json. Given the Q: How do I replace a character in a string in Ansible? A: To replace a character in a string in Ansible, you can use the following steps: 1. Single-within-double quoted format will not work with the application. . The lineinfile module is used when you need to manage lines in text files. In most cases, you can use the short module name blockinfile even without specifying the collections In this solution, the idea is to create the content in YAML and convert it to JSON as the last step. g. One lesser known but extremely powerful Ansible module is json_query which leverages the JMESPath JSON query language. Since a restart in the underlying Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site PowerShell Script: replace mutiple strings in a json file. The offending line appears to be: - set_fact: ^ here Ansible remove escaped what I'm trying to do is kind of conversion table (from a different JSON file) if a field has the value 'a' replace it with 'some other text. json {"abc": {"host": "xyz", "version": "4. so in this Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about SUMMARY Ansible really needs a JSON module that can edit json file and perform atomic operations like add entry (and create path if needed) delete entry replace entry Below is a proposed playbook, with upside and pitfalls. For more details see this and an explanation In an Ansible task I'd like to test if string is json prior to use it with from_json. Ansible regex replace String. My goal is to edit the key-value pairs in a file called example. iso file, add small number of files Ansible replace text in file. content | The replace module in Ansible searches and replaces text in a file based on regular expressions. Since a restart in the underlying application is required (which takes some time, since it's an heavy and old java app), I'd like to have a change detection so the restart is only applied when needed. Ansible Replace module.

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Ansible replace string in json file. 10, The documentation for ansible.