ansible combine listsansible combine lists

One of the most often-requested features in Ansible was a way to merge hashes. How to Create List in Ansible To create a List in Ansible. It only takes a minute to sign up. zip even without specifying the collections: keyword. For example APP servers have their own crons, MTL servers have their own crons etc .. with_flattened won't do the trick since the same reason as crons: " { { all_crons + dmz_crons + mtl_crons }}" - user146134 Jul 8, 2019 at 18:42 Add a comment 1 Answer How to concatenate with a string each element of a list in ansible How much space did the 68000 registers take up? Stack Exchange network consists of 182 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. These are the values positional1, positional2 and so on in the following 6 Answers Sorted by: 13 I really didn't like using the add-on filters or the loop. ansible - How to combine two lists? - Server Fault Why did Indiana Jones contradict himself? In the assignment expression we will need to use filter "combine" to add new key-value pairs to the existing dictionary. 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 120, 10, 3, ?, ? Appending to lists or adding keys to dictionaries in Ansible Ansible: extracting a list or dictionary from a complex data structure By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In most cases, you can use the short plugin name items even without specifying the collections: keyword. Ansible - Appending to lists and dictionaries - TTL255 I would be very grateful for any thoughts. 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. This setting is called 'merge'. Cultural identity in an Multi-cultural empire. Connect and share knowledge within a single location that is structured and easy to search. Using filters to manipulate data Ansible Documentation Example, in role app folder meta, create a file main.yml with the following content: The value of app_common_cron_job can be set in each ansible group, for example For example, a variable that is lower in the list will override a variable that is higher up. .The answers are 1 and 1. For example APP servers have their own crons, MTL servers have their own crons etc .. with_flattened won't do the trick since the same reason as, Ansible merge lists of many matched group_vars, Creating a Kubernetes Cluster with Vagrant and Ansible, Using Ansible for Terraform Managed AWS Infrastructure, Why on earth are people paying for digital real estate? Why did the Apple III have more heating problems than the Altair? ansible - Append JSON dictonaries - Server Fault Before going further, let us refresh our memory of knowledge on the dictionaries. Combine and Merge Lists How? : r/ansible - Reddit requests In this segment, we are going to see how to create a List of dictionaries. Learn more about Stack Overflow the company, and our products. When you are working in Ansible automation, you might get a requirement to work with JSON files and, Ansible json_query is an on-demand feature that every ansible user wants to explore. During the infrastructure automation, we might end up in a situation where we need to process Huge datasets, especially in JSON format. you can do the same with lists. Sci-Fi Science: Ramifications of Photon-to-Axion Conversion. What you can't use in 2.9 is the option list_merge. ansible.builtin.zip filter - combine list elements ansible.builtin.items lookup - list of items Hot Network Questions what is meaning of thoroughly in "here is the thoroughly revised and updated, and long-anticipated" Would it be possible for a civilization to create machines before wheels? The Cookies collected are used only to Show customized Ads. Ansible 2 (currently in 2) finally includes a way to do this: the 'combine' filter. I have two dictionaries like this: 1st dict: Follow DevopsJunction onFacebook orTwitter Actually specific crons are manually entered in servers, we want to all automate it. How to join values of 2 lists in ansible - Server Fault the union filter, five I then need to merge them for a final task. ansible merge two lists based on an attribute - Stack Overflow Identifying large-ish wires in junction box. How can I learn wizard spells as a warlock without multiclassing? Has a bill ever failed a house of Congress unanimously? We Hope you are fine with it. Else, is there a way to achieve equivalent ? plugin name What is Ansible Map Filter and How it works? input | ansible.builtin.zip(positional1, positional2, key1=value1, key2=value2). Be aware that you will also need a way to clear created cron jobs that are not needed anymore (tip: use a common_cron_job_delete var and its corresponding task). Use the 'combine' filter to merge hashes in Ansible 2 - toroid.org Is speaking the country's language fluently regarded favorably when applying for a Schengen visa? possibility that x is not defined. These are the values key1=value1, key2=value2 and so on in the following Is religious confession legally privileged? the play. You have a new hire in your team, In this post, we are going to see how to use ansible lookup and how to read file into ansible playbook using ansible file lookup. Let us see how to create this data structure, List of dictionary with Ansible, in this playbook, we are creating a variable named userdata and declaring it as a list (array) and adding each dictionary (key-value datasets) we have stored inside with_items, Like the previous example, we do not need any functions like combine to add a new element to list (or) array, this can be simply done with the + plus sign. Merging two dictionaries by key in Ansible Ask Question Asked 1 year, 7 months ago Modified 4 months ago Viewed 6k times 2 I'm looking for help in merging two dictionaries in a specific way. If you want to modify a list of strings things are pretty easy. Especially python dictionaries because Ansible is pythonic and the word dictionary was introduced in python. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How to work with lists and dictionaries in Ansible We will start with a basic Ansible playbook and learn what is task and play and what is playbook etc. Last updated on Jun 26, 2023. Can someone please explain why? 587), The Overflow #185: The hardest part of software is requirements, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, I am trying to use vars_prompt but when i run the playbook it directly gives me prompt and ask for the value, it doesn't checks in inventory file, Ansible Playbook and syntax issue with variables. Here is the execution result of this playbook, One more best example of this dynamic dictionary creation is in our other article, where JSON data gets processed and created as a phonebook using ansible dictionary. Will just the increase in height of water column increase pressure or does mass play any role in it? "Email": "aksarav.middlewareinventory.com", Creating a Dictionary in Ansible using the, How to Append or Add items into Ansible Dictionary, {{ jsoncontent.json | json_query('[*]')}}, How to create List of Dictionaries in Ansible, { 'Name' : item.Name, 'Email' : item.Email, 'Location' : item.Location }, Working with Ansible Dictionaries - Examples, How to process (or) iterate through the ansible dictionary, How to work with Ansible List - Create List, Append items. You can declare and create a dictionary using the normal variable declaration methodology of Ansible. One way to add/append elements is during the declaration time which we have seen in the last two examples. # two => [[1, "a"], [2, "b"], [3, "c"], [4, "d"], [5, "e"], [6, "f"]], # three => [ [ 1, "a", "d" ], [ 2, "b", "e" ], [ 3, "c", "f" ] ], # shorter => [[1, "a"], [2, "b"], [3, "c"]], # compose dict from lists of keys and values, 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.zip filter combine list elements. Using Ansible, how can I take actions on each file in a specific location? In this case, you can iterate the list and merge the lists on your own, e.g. The best answers are voted up and rise to the top, Not the answer you're looking for? Ansible merge lists of many matched group_vars - Server Fault If True return an error on mismatching list length, otherwise shortest list determines output. One of these scenarios is how to modify an existing list of dictionaries with Ansible. merges lists into synchronized list - Ansible Documentation ansible - template json for environmental variable in docker container, Dynamically passing a json as a parameter in a "command" task, Create JSON Patch 6902 from two yaml/json files, Difference between "be no joke" and "no laughing matter". What is the Modified Apollo option for a potential LEO transport? How to create List of Dictionaries in Ansible Working with Ansible Dictionaries - Examples How to process (or) iterate through the ansible dictionary A real-time example of a complex Nested List and Dictionaries of Ansible A JSON data processing with Dictionary techniques and Json_query ansible We have many servers groups, for example : Each server group have their own cron jobs, and a server can belong to many matched and unmatched groups (a server can be in all groups MTL, DMZ, APP, CUSTOMER_Y and CUSTOMER_X). We have given the hyperlinks here for you to read further. Is that possible ? .The answers are 1 and 1. To declare the variable within the task we use set_fact module. What you can't use in 2.9 is the option list_merge. you can define some value to it by default using the default. We might, Whether it is On-Prem (or) Cloud-hosted, A Typical Non-Containerized Enterprise infrastructure would have ample of Virtual Machines aka Servers [ Linux ] Let us suppose that you work for the DevOps team of a Big Organization where you manage 100+ ec2 instances. Purpose of Ansible Lookups When it comes to automation, we handle different types of data and files such as csv,txtand sometimes we might even need, In this post, we are going to see examples of Ansible playbook and various different modules and playbook examples with various modules and multiple hosts. 12 Zip the two lists and use the resulting list elements to create dictionaries. Using set_fact to create an Ansible list As you might know, Ansible has a special directive called set_fact to create facts. Repository (Sources) Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. To put it in other words, a list with dictionaries in it. the difference between a list(array) and a dictionary is in the dictionary every value has a name(key) and not indexed by their positional values like 0,1,2 etc. It's been in Ansible since 2.3. Are there ethnically non-Chinese members of the CCP right now? Hope the following picture would give a quick idea about the dictionaries. configuration setting offers similar (recursive-only) functionality, but There are multiple ways to create a dictionary in ansible and we would be seeing all of them with examples. Subscribe to our channel, Signup for Exclusive "Subscriber-only" Content, In this article, we are going to see how to read the JSON file in ansible-playbook JSON is the most famous data representation it is widely used to store and transmit data. changeable, indexed and unordered. Combining these techniques makes it What are lists? Typo in cover letter of the journal name where my manuscript is currently under review, Python zip magic for classes instead of tuples, DMZ (reverse proxies exposed to internet), CUSTOMER_X (server that contains customer X), CUSTOMER_Y (server that contains customer Y). The intent is to add additional recipients to the recipients list in a third dictionary. Book or a story about a group of people who had become immortal, and traced it back to a wagon train they had all been on. This has been discussed many times on the mailing lists and on IRC and on stackoverflow, and implemented in at least five different pull requests submitted to Ansible, and who knows in how many private filter plugins. We have a list of three dictionaries stored inside an array or list. example: input | ansible.builtin.zip(key1=value1, key2=value2, ). As this turned out to be not that trivial, I'll document it here mostly for my own reference. Ansible: How to merge list of dictionary objects with the same key getting one dictionary element with a list of thouse different values grouped? Iterate over several iterables in parallel, producing tuples with an item from each one. submitted to Ansible, and who knows in how many private filter plugins. . Given flat_list: - "foo" - "bar" So far we have talked about Ansible Dictionary. I have written an article on Ansible List too. we have different ways, let us go through them with examples. and on IRC and on Ask Question Asked 7 years, 7 months ago Modified 2 years, 10 months ago Viewed 28k times 9 I have a task which uses with_subelements but it's terrible slow for big list (especially that most of the elements has duplicates and I don't need to run it multiple times for them). in Perl, it used to be called as hash. Ansible - merge two dictionary lists Ask Question Asked 4 years, 2 months ago Modified 4 years, 2 months ago Viewed 5k times 0 I'm trying to figure out how to combine two dicts of varying sizes. why isn't the aleph fixed point the largest cardinal number? this was what i was looking for, thank you so much :), Why on earth are people paying for digital real estate? In this post, we are going to see how to create a dictionary in ansible during the playbook execution dynamically and how to add items or elements to a dictionary. Note the use of default({}) to address the The two facts are used in different tasks. What we want to do is to merge all "cron_jobs" list of matching group_vars of a given server. I am using ansible 2.9 and cannot lookout for a way to append below JSON structure with data. This describes the input of the filter, the value before | ansible.builtin.zip. Ansible - merge two dictionary lists - Stack Overflow You can optimize the roles, avoiding repeating code, by using a common role that is added as a dependency on the meta folder. Ansible 2 (currently in 2) finally includes a using Ansible set_fact for appending this. Issue Tracker For example. Merging variables in Ansible with roles - Server Fault The common role will have the needed task to create the cron job using the provided value in common_cron_job. Brute force open problems in graph theory. Characters with only one possible next character. plugin documentation and to avoid conflicting with other collections that may have 45 (Related to Callbacks or hooks, and reusable series of tasks, in Ansible roles ): Is there any better way to append to a list or add a key to a dictionary in Ansible than (ab)using a jina2 template expression? Configuration entries for each entry type have a low to high priority order. got the answer to above, i meant to add only in Strings list and rest everything should be intact. It's been in Ansible since 2.3. different Note The output of the examples in this section use the YAML callback plugin. Check it out. In Ansible parlance facts are variables too. When keyword and positional parameters are used together, positional parameters must be listed before keyword parameters: