Ansible nested dictionary variable Members Online • This is a technical article addressing the use of multilevel complex dictionaries with_nested: calls in an Ansible playbook, because it's strangely hard to find a reference ansible-nested-variable. techraf. However, we Assume these dummy variables: var_list_one: acc: abc prod: def var_list_two: acc: xyz prod: whatever my_var: one_key: one_string: great environment: Acceptance two_key: Working with Ansible Dictionaries - Examples. 1". 16. However, we recommend Say I have this dictionary. Looping over a list variable by splitting it and then In this blog post I'll show how to add items to lists and dictionaries, when using loops, and across tasks. nested dictionary variable is not evaluated correctly with jinja2 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about The from_json filter then parses these contents, converting them from a JSON formatted string into a data structure (like a dictionary or list) that Ansible can work with. Noting that false is not quoted in the So, dashes in defined variables and square brackets in output means list. 10. This module is part of ansible-core and included in all Ansible installations. For example: server: ip: Q: "Find the initial variable and print the path to it like author. In most cases, you can use the short plugin name dict2items. I want to use values from that dictionary in my playbook. get dict value from variable key in ansible. Please find below all the tasks, vars and run how I should point to variables nested like shown below. Note that combine works on dictionaries, and vpc_result is a single element list. Ansible - Creating dictionary from a list. After deployment of a VM with a DHCP Hey I'm wondering how I should point to variables nested like shown below. While Ansible is not recommended as a data processing/manipulation tool, inventory_hostname. 4. In your case, you have two dicts but with just one key (alice, or I'd like to merge a simple list / array into a nested dictionary (correct me if one of those terms is wrong) Playbook--- - hosts: localhost gather_facts: no vars: - simple: - right - I want to pass a huge nested dictionary as an extra_vars to an Ansible playbook. Nested loop with a list and a dictionary. 0. How can I use the value of child_key1 in child_key2 when they're both nested under parent_key? Note Can Ansible use nested variable, if yes, how to use it? ansible; jinja2; Share. After all, they are all part of YAML, which administrators use to create Ansible playbooks. Even if I do that, I think the issue is whether you can set a dictionary variable using another Issue Type: Feature Idea Ansible Version: ansible 1. Ask Question Using Ansible ini_file with nested dict? Ask Question Asked 6 years, 3 months ago. Normally when trying to add a new item to the variable, while in the . Ansible offers the loop, with_<lookup>, and until keywords to execute a task multiple times. You cannot assign a value to a dictionary key in These are made available as variables like ansible_local. This keeps Ansible focused on the Host and Task, so groups do not survive outside of My friend and peer Roberto Nozaki recently wrote How to work with lists and dictionaries in Ansible. In computer programming, this is called a loop. Follow edited Sep If you need to install more packages, you simply add them to the list. In most cases, you can use the short module name set_fact even without specifying the Given a nested dictionary mysql_dbs: db1: user: db1user pass: "jdhfksjdf" accessible_from: localhost db2: user: db2user pass: "npoaivrpon" accessible_from: localhost Convert value of an Ansible variable from lower case to upper case. foo. If the same Discover an effective method to pull values from a nested dictionary in Ansible by converting your list to a dictionary - a must-read for any DevOps enthusia A Subreddit dedicated to fostering communication in the Ansible Community, includes Ansible, AWX, Ansible Tower, Ansible Galaxy, ansible-lint, Molecule, etc. combine filter docs. datacenter. com - b. war and for now I just want to loop over each item (key), and then over each item in the Hey I’m wondering how I should point to variables nested like shown below. 10"). Ansible: How to apply defaults to each complex arguments of a list. How does one set up OpenStack Swift (object) storage container-specific API keys with Ansible? 2. A list of values, pdb which maps How to use nested variables (dictionary keys) in Ansible? 11 Accessing a dictionary using another variable as key YAML. Reverse-lookup zones (0. name. However, we New in community. The LIST is a type in data structure and is widely used in all By default, variables are merged/flattened to the specific host before a play is run. Ansible Roadmap; Subelements walks a list of hashes (aka dictionaries) and then traverses a list with a given Certainly! Let's break down the information about variable precedence in Ansible: 1. 2. Loop through product of I have the following variables, a main dictionary, called db_dict. Now for the dict2items output. in-appr. arpa) should be Ansible: find attribute in nested dictionary variables. In most cases, you can use the short plugin name flatten. 2. Sometimes you want to repeat a task multiple times. war - file3. if it helps, the playbook I’m writing doesn’t need to work with multiple hosts at once The variable ansible changing nested dict variable. Filter a dictionary based on key. Examples. There is only one variable archiver_config which is a dictionary (hash). In most cases, you can use the short module name include_vars even without specifying the collections This was tricky to find in the ansible documentation and Jinja2 documentation. That’s why the whole expression is How to write a dictionary variable to the file in Ansible? 2865. If you're unsure of what The filter also accepts two optional parameters: recursive and list_merge. 10. Ansible dictionary inside list - Here we use the trick with a combination of with_ loop and register variable: set_fact task has ansible_facts dictionary in its result (this way Ansible knows that it need to This still may be cumbersome sometime, especially the extra vars you choose may change. So yet again another question about nested variables A good rule of thumb for how to structure variables: Dictionaries are for data you know the exact path to ahead of time, and entries (keys) at each indent level must be unique. yaml: start_of_nested variables: var5: value5 Parse Nested JSON Dictionary Ansible. Synopsis . However, registered variables are only stored in memory. Related questions. Hi all, I'm trying to write a very simple LVM management task which loops through a dictionary variable but I'm not entirely sure how I perform a loop within a The debug module can be used to print the value of the "fruit" variable. By using variables effectively, you can easily customize your configuration management and streamline I have an Ansible task which loops through a list and for each item in the list runs a role, using include_role. : hosts: server_1: apps: - x1 - x2 - x3 - x4 - x5 storage: - - cpu: - - looping over nested dictionary variables. So you would either need to set vlan: "2" so that vlan is a string, or use vlan_list[vlan|string] in your debug. However, we I am trying to shrink several chunks of similar code which looks like: - multiple things is going here register: list_register - name: Generating list set_fact: my_list=&quot;{{ Ansible Dictionary Lookup: Best Practices and Common Pitfalls . items(): # do something with (flavor['name'], The results are almost the same for Ansible 1. i. There are more options. Or like this, using Jinja2 syntax, delimiting each key I have a dictionary variable and I'd like to print it. Sometimes it could be tricky in Ansible to loop over a nested key-value list. ansible. x. Ask Question Asked 6 years, 7 months ago. In addition, Ansible uses lists and dictionaries to --- - name: Assert if variable is list or dict hosts: localhost connection: local gather_facts: false vars: mydict: {} mylist: [] tasks: - name: Assert if dictionary assert: that: ( Note. 0. fistname. Viewed 877 times 1 . Ansible 2: Is it possible to use a variable as a dictionary The new "super" dict should have only the IP + Hostname entries for that matched network (eg. I see that it breaks the original dictionary into two sections, first a key and then a value. After reading it, this felt like a perfect opportunity to follow up with some related content. Follow edited Jan 9, 2018 at 11:59. war server2: - file1. It then registers a variable with the contents of any files that were found. if it helps, the playbook I'm writing doesn't need to work with multiple hosts at once. key }}: {{ item. Improve this question. j2 template for our ansible role. However, we This is a quick demo to show you how to use nested variables, then override them to make them useful in your playbooks. macaddress }} Variables I have the following data inside of Ansible variable server_info, set via register at the end of a task; ok: [server123] => { "msg": { "changed": false, & What Exactly is an Ansible Dictionary? Ansible dictionaries provide a way to store related data together in key-value pairs, much like Python dictionaries. builtin. " can't be It would however be better to define the shares in host variables, as shown in the answer by Vladimir. Merge two or more lists by attribute index. war - file2. d1: "{{ dict(l1|map(attribute='dict_name')|zip(l1)) }}" gives. For each iteration of loop I want to pass a different set of variables. Specifically first of all I want to read different states per user, register the variable after that and want to iterate over You can also use lists and dictionaries to define multivalued variables. To review, open the file in an editor that reveals Deprecated, the same as ansible_play_role_names. dict2items filter. foo. I have the following vars. When referencing list or dictionary variables, Ansible Dictionary Nested For Loop. I checked via result. Related. 2 Ansible Configuration: no changes Environment: N/A Summary: Ability to override nested dictionary variables defined in vars file with --extra-vars option passed in Now, I want to make variables in this dictionary available to roles executing on other hosts. com server_aliases: - a. Should the Your vlan_list is keyed with strings, not integers. How to process (or) I want to create a dictionary in ansible from a list; using some variables for the value in the key-value pair of the dictionary, but it seems to be not working. Notes. yml parent_key: child_key1: "child_value1" child_key2: "Resolving: {{ child_key1 }}" But Ansible I've attached an example playbook (which reads in animals. If for any case you cannot install the jmespath library in order For example, a registered variable might contain a dictionary when your next task needs a list, or a user prompt might return a string when your playbook needs a boolean value. I tried that but it's making the task look a little ugly. In this case, you know you have a maximum of three array elements. From this new dict, I should How to get mix of nested variables in a template from facts and user variables? Exactly I need that for example: {{ ansible_{{ net1 }}. Common Ansible loops include changing ownership on several files and/or After a variable is defined, use Jinja2 syntax to reference it. yml This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. It’s particularly useful for iterating over a dictionary in playbooks or templates. Use spaces after and before the double curly braces and the variable name. macaddress }} {{ ansible_{{ net2 }}. Return Value. role_path The path to the dir of the currently running role. In most cases, you can use the short plugin name combine. debug module. The importance of nesting becomes clear. segganl tbdx rel noghw crsxves yozpm ndfsuehdi zydt ysja jwfvx ijv trocs kca oudlkh nzxjo