Ansible access nested variables. Variable names should be letters, numbers, and underscores.

Ansible access nested variables In most cases, you can use the short module name vars even without specifying the collections: keyword. Jan 29, 2021 · Get early access and see previews of new features. Oct 28, 2014 · Get early access and see previews of new features. The ansible-examples github repository contains many examples of how variables are used in Ansible. yml 4 directories, 5 files How do I use nested variables of an item within the jinja templates? I am running ansible to produce configs for network switches. The following block of code is used to get a list of files from a directory. Example of user dictionary file variable: User dictionary file variable, dev_infra_bastion_0_example_com is node FQD Apr 15, 2016 · with_nested: “{{find_zips. You cannot access values from these nested data structures with the simple {{foo}} syntax. Access Variables in Templates. What it looks like: Loop through host_vars Aug 16, 2024 · I’m looking for guidance, pros, cons, etc. Despite that, we recommend you use the FQCN for easy linking to the module documentation and to avoid conflicting with other collections that may have the same Aug 20, 2020 · Get early access and see previews of new features. Thanks Dec 15, 2015 · I see a lot of discussion about nested variables in Ansible, but I have not yet been able to find a solution to my problem. foo variable contains a value of bar. May 26, 2017 · I'm writing an Ansible Playbook and am trying to access a nested variable inside a referenced hash. What is the best way to update the database name? I tried the set_fact module but could not get it to update the nested variable correctly. macaddress }} Variables net1, net2, etc defined in hosts_vars that way: net1: eth0 net2: br0 Is it possible at all? And if answer is yes, then how? Feb 25, 2025 · Here, app1 and app2 share the values for opts and port using the anchor &jvm_opts and the alias *jvm_opts. database. Ansible access same group vars different children Jun 24, 2021 · The issue I'm having right now is with nested loop and registered find_logs variable which holds list of dictionaries in results key. The example use case will be for a collection of vmware related roles that do operational tasks like creating vm’s from a template. Nested variables are invaluable for scenarios involving groups of objects, such as multiple servers, where each object has its own properties (name, ip) Referencing nested variables: Nested variables can be accessed using dot notation or bracket notation. Usually + works but ~ is safer. For example, create the files below. How can one generate a dict in Jinja/Ansible as a var? 1. In most cases, you can use the short plugin name nested. dataSourceUsername How to tell the jinja that ABC_Production is a variable and access it? May 27, 2022 · Ansible provides an internal data type for declaring variable values as “unsafe”. com - git: git. name. around the topic of using nested vs. --- - hosts: all vars: dev: foo: bar I set the env variable to contain a value of dev on the command line. foo_port is a May 21, 2021 · I have a play that is reading in this file and storing it inside a variable called "expired_certs": - name: Store file contents into variable include_vars: file: cert_expiring. nested for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same lookup plugin name. The variable environment is also reserved. ├── ansible. In a task or template, instead of getting the IPv4 address of eth0, the “address” variable ends up being just “{{ ansible_{{ iface }}. Dec 16, 2019 · There is an open bracket "[" after "files:" so you need to go that position on the array before going to path. yml looks like this: Dec 12, 2013 · Hello ansible devs and users, In a variables file, I’d like to do something like this: iface: eth0 address:“{{ ansible_{{ iface }}. Sep 6, 2013 · I want to use Ansible to install the appropriate RAID controller utility for every server but work in a fairly mixed environment with different vendors and different RAID controllers. 20: DestIP: 192. You can see details and processing order here in the source code. to construct a hierarchy, and not with a _. However, we recommend you use the Fully Qualified Collection Name (FQCN)ansible. But I can't get ansible to loop over these. Ask Question I thought that was the correct syntax to access nested data from a vars file. c where b is dynamic, would be accessible using a[b]. vendor. shell> tree . - ssh-rsa AAAAB3Nza. Sep 7, 2019 · and now I would like to deploy the same thing on machines that don't need a proxy (therefore I would like to move this variables in the inventory). " A: Put the declarations into the vars. 8. Access variables in your template using the {{ }} syntax. In most cases, you can use the short plugin name vars. From what I can tell this is an interpolation or merging problem. Is there a way to pass a variable from one playbook to another one? I found Ansible best practice for passing vars to nested playbooks? but unfortunately it didn't had a solution which I can use. 1. builtin. 9. if it helps, the playbook I’m writing doesn’t need to work with multiple hosts at once The variable cannot be re-structured since it’s being used by another ansible-module I do not maintain Oct 19, 2015 · Hi AnsiPeeps, I have a nested structure in vars as so: data_bricks: ovirt-node-01: gluster_brick2 gluster_brick4 ovirt-node-02: gluster_brick1 gluster_brick3 ovirt-node-03: gluster_brick2 gluster_brick4 (the number of items in the 2nd-level node now is two, but may be higher if necessary…) So in the associated playbook, I need to do something akin to: “mkdir -p /{{ item }}/data_brick May 15, 2014 · " with_nested: ‘john’ ‘john1234’ ‘sample. yml, use it as a value for the key (now, this can be called a nested variable): Dec 2, 2013 · Hi folks, I created a role with default variables using a nested syntax and not I’d like to override just a few of those attributes in the playbook, but whenever I do it I end up redefining the entire variable na loosing the defaults for the non overrided values. 6 (Ansible is however install via python-pip and has package version 4. Here is my vars file: SourceIPs: 192. vars for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same lookup plugin name. branch=exec_refactor" neither this Apr 22, 2012 · # an example of accessing an ansible fact (which ARE somewhat nested) {{ hostvars['bar. I need to update all my playbook wriitem in old scary style. Ask Question Asked 4 years, 1 month ago. debug: var: food Or using the set_fact module. Try: var: list_matched. foo_port is a Oct 29, 2015 · expected output in test_file when ansible job is run with cluster=ABC_Production as parameter: bobDBuser=bobDb actual output: bobDBuser=ABC_Production. Trying to get the if statement to be based on the bgp_peer_version, I have the following variable files We have large variable list (xml files, 4000+ lines) which I ran through an xml->yml converter. For example, to reference an IP address from your facts using the bracket notation: Jan 25, 2017 · There are no "nested variables" in your example. - username: user2 state: present keys: - ssh-rsa AAAAB3NzaC. However when called as hostvars[host][‘boo’] this renders as “x is {{ foo }}”. I think the best way to handle this is by writing a custom module that provides a raid_controller_manufacturer fact, but before I do I wanted to see if it would be possible to just do some fuzzy matching on Mar 26, 2015 · Although this works perfectly fine in this situation, I'm afraid this requires the variables you'd like to access to be part of some parent variable (containers in this example). Example in a task: - debug: msg: "{{ servers[0]. What you can do is add a variable in the defaults/main. path Oct 15, 2013 · Hi Micheal, Thanks, this works. 16 KB) Feb 16, 2021 · msg: "{{ ansible_facts. ip }}" Dec 16, 2019 · But I’m not able to access nested data structure from variables in the when statement. From within a template, I'm trying to e Jun 19, 2017 · Usually, yes; it's another dependency that needs installation, and for most of the use cases I've had, it's only marginally nicer to use. patch (1. However, we recommend you use the FQCN for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same Aug 29, 2020 · I have my inventory file configured with group variables. For example, in role/mysql/defaults/main. This lookup plugin is part of ansible-core and included in all Ansible installations. This playbook demonstrates what I have tried (Ansible 2. yaml file and add the following content. For example, to reference an IP address from your facts using the bracket notation: A Subreddit dedicated to fostering communication in the Ansible Community, includes Ansible, AWX, Ansible Tower, Ansible Galaxy, ansible-lint, Molecule, etc. In most cases, you can use the short plugin name vars even without specifying the collections: keyword. This next block is used to display the contents of the registered variable. 33. vars are not being resolved as expected. Therefore I'd recommend to split variables with a . However, if I had to do a lot of merging, or a very hairy merge, a plugin would probably be a lot more efficient, especially considering I could break into real Python code to do the work (less annoying than working with the Python-in-Jinja2-in-Ansible YAML!). 30 Port: 22 19 May 23, 2018 · ahh yes I should have seen you just wanted a nested var, just an FYI ~ is similar to + but coerces the variable to a string so you don’t have to do that yourself. 1): Synopsis ¶. domains: - erp: erp. Example: all: children: europe: vars: network_id: 3 network_name: &quot;europe-eu&quot; hosts: eu Jul 10, 2014 · How can I leave the dbhosts structure in the main. For example, to reference an IP address from your facts using the bracket notation: Dec 27, 2023 · When leveraged judiciously, nested variables make Ansible‘s "infrastructure as code" shine through declarative self-documenting playbooks. Which direction should this go? Disable the nested support, or fix it? (attachments) ansible-suppress-recursive-resolution. 1 proxy_host: myproxy proxy_port: 80 Note. 11. Anchors and aliases also let you share complex sets of variable values, including nested variables. Jan 26, 2021 · Hey I’m wondering how I should point to variables nested like shown below. It then registers a variable with the contents of any files that were found. Variables should always start with a letter. -- tasks: - name: tell everyone foo_announce: msg="tell everyone" token=x091232 uri=https://api. erpworks like a charm. However, if I only move the block in the inventory [machinegroup:vars] proxy_env: http_proxy: myproxy https_proxy: myproxy ftp_proxy: myproxy no_proxy: localhost,127. 168. ISSUE TYPE. Appreciate any help or direction to Nov 6, 2019 · When looping over a dictionary of lists of dictionaries, as shown below, backslashes in string variables are escaped twice resulting in DOMAIN\\\\USER instead of DOMAIN\\USER. May 22, 2016 · I have a set of variables which define FQDNs. cfg ├── files │ └── ignition │ └── cluster1 │ └── worker. It just overwrites the whole ansible_local hash. Feb 7, 2010 · One of them set_fact a variable. The collection has multiple roles, eg: (provision_vm, create_template_from_vm, etc). yml depth 2: group bots-b, bots-b. ip Dec 16, 2019 · Here is the working playbook. Feb 28, 2022 · Question: how can I reference just single variables from this structure? I tried different approaches but neither syntax, also in examples works. So accessing them like domains. In this example, group variables for host bot2 will be populated in the following order: depth 0: group all, all. files[0]. ANSIBLE VERSION A Subreddit dedicated to fostering communication in the Ansible Community, includes Ansible, AWX, Ansible Tower, Ansible Galaxy, ansible-lint, Molecule, etc. name }} has IP {{ servers[0]. If I do find_logs. The governing playbook looks like:--- - hosts: tag_Cluster_restore vars: pg_password: qa: blah staging: blahblah production: blahblahblah roles: - role: psql_helper For simplicity, my role's tasks/main. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. In Ansible, many variables and facts are organized in nested YAML or JSON data structures. - username: user3 state: present keys May 27, 2022 · Ansible provides an internal data type for declaring variable values as “unsafe”. For example, to reference an IP address from your facts using the bracket notation: Nov 27, 2015 · fatal: [launched] => One or more undefined variables: 'var_hostname' is undefined . Even if the task using with_nested is skipped, the with_nested argument tries to "access" the variable and fail. yml file for reference AND move the 'secret' variables to a different file? All I can find is info on how to add a file with variables in a task during runtime, but shouldn't it be loaded before the variable 'dbhosts' is loaded so the expansion of the variables in the dbhosts is going to work? Oct 23, 2018 · I know it's an old question, but just found the solution for this problem. : kommunen: weimar: tld: stadt-weimar. files}}” “{{bn}}” So basically what’s happening here, is I build the variable name into bn using set_fact. txt" register: home_files. Feb 25, 2025 · Note. Ansible loop over variables. sql’ [‘localhost’,‘%’] It looks like the first should be a list of usernames, and the second should be a list of files, but you are specifying strings instead – which is what you would do if those were variable names. I think the best way to handle this is by writing a custom module that provides a raid_controller_manufacturer fact, but before I do I wanted to see if it would be possible to just do some fuzzy matching on Referencing nested variables ¶ Many registered variables (and facts) are nested YAML or JSON data structures. Nested variable in Ansible. Takes the input lists and returns a list with elements that are lists composed of the elements of the input lists Whether or not you define any variables, you can access information about your hosts with the Special Variables Ansible provides, including “magic” variables, facts, and connection variables. Let's say you are creating variables using the vars plugin. Ask Question Ansible nested variables in command line. Despite that, we recommend you use the FQCN for easy linking to the module documentation and to avoid conflicting with other collections that may have the same module name. 0. 10 and according to console output, Ansible core 2. address }}” However, this does not work. On ansible 1. I have a list with nested objects, e. yml (missing here, ignoring) depth 1: group bots, bots. Accessing nested variables in Ansible. yml, use it as a value for the key (now, this can be called a nested variable): Oct 3, 2016 · With this pretty straightforward setup I expect that Ansible should evaluate inline conditionals regardless of their position (top level or nested). Jul 16, 2023 · Hi, This code works, I just don’t understand the indexing and loop behaviour. flat variables for a collection / roles. storage_nic is totally bogus as a string can't be a nested variable. yml name: expired_certs The contents of "expired_certs" looks like this: Jan 9, 2023 · Q: "Write nice code. Just put this before using hostvars in the next task or role and somehow you will be able to use the hostvars variables into hosts: definition. How to I access JSON value from ansible output? 2. Let’s see how to reference these nested variables with a simple example. But I really would like to know if there's a notation to access nested variable variables ;) Referencing nested variables Many registered variables (and facts) are nested YAML or JSON data structures. Referencing nested variables: Nested variables can be accessed using dot notation or bracket notation. May 31, 2021 · problem: I can access the host_vars and get the desired data, except that the interface variable is a list and I want to loop over it. Steps To Reproduce: Variables can be defined at different levels, such as playbook level, host level, or group level, depending on your requirements. mycompany. 7. Let's create a playbook. Is there any way to achieve what I want to do Aug 13, 2020 · Hi, I have been looking into nested , subelements and other lookups with no luck to make this working , using ansible 2. address }}”. storage_nic }} I guess if ansible_fact is a special ansible variablethis should be hostname response of ens15f0" You don't show the task which uses nmlci_module and provides storage_nic information. b. Jul 16, 2014 · Given the following example: foo: “y” boo: “x is {{ foo }}” This will renders in a template “x is y” (when referenced as {{ boo }}). Here the code: engineers: - username: user1 state: present keys: - ssh-rsa AAAAB3Nza. Jul 1, 2016 · 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;{{ list_register. May 5, 2016 · These are made available as variables like ansible_local. The reason is: multiple layers of resolution are implemented as a magic dictionary that renders the variables on access. address}}-----as you can see when iterating over hosts from the group for some reason. A variable like a. Variable names should be letters, numbers, and underscores. 3. com Indeed, I both need to loop over them and access them namely (in a template file). com Jun 14, 2023 · To see the content of the variable, you can: use the debug module with the var parameter: - ansible. Bug Report; COMPONENT NAME. I want to create all the groups that are defined in the variables for the users, and not define a seperate group variable with all possible groups. git dest: "/var/code" How would I override the branch param in extra-vars? I tried something like this below but it didn't work. For example, to reference an IP address from your facts using the bracket notation: This module is part of ansible-base and included in all Ansible installations. yaml: start_of_nested variables: var5: value5 var6: value6 when I check server1 variables with: ansible server1 -m debug -a "var=hostvars[inventory_hostname]" I get variables only from frontend. Specifically first of all I want to read different states per user, register the variable after that and want to iterate over this variable in another task. url which outputs something like Apr 16, 2016 · The {{ }} notation in Ansible comes from Jinja2 templates, it essentially directs Ansible to replace this with the contents of that variable. You can create such a framework on your own. Oct 14, 2016 · My requirements are these: a deployment environment is passed into the playbook as extra vars, for ex : dev, qa or prod I have a variable called DEPLOY_URL Based on the value of the env variable, Referencing nested variables Many registered variables (and facts) are nested YAML or JSON data structures. Basically , I’d like to construct a loop than can itself iterate over other variables (list or d… Jan 8, 2021 · Get early access and see previews of new features. How can I use Ansible nested variable? 2. Apr 17, 2018 · start_of_nested variables: var1: value1 var2: value2 frontend. yml. de desc: Kommune Weimar ad The ansible-examples github repository contains many examples of how variables are used in Ansible. find: path: "/home/svc-ansible/Documents" patterns: "file*. Register the variable: Feb 10, 2021 · In foo. So yet again another question about nested variables (pease forgive me if this has been answered before, just point me at the previous discussions). Nested variables can be created like this. . USERNAME. repo: branch: int url: git@github:user/repo. You can define variables in separate YAML files and include them in the playbook using the vars_files directive. ansible. Best regards Peter How to get mix of nested variables in a template from facts and user variables? Exactly I need that for example: {{ ansible_{{ net1 }}. com - crm: crm. There is only one variable archiver_config which is a dictionary (hash). yml: Apr 20, 2013 · Before adding a user to a groups I need to create the group. Ansible set_fact Nested Variables in Playboook. Feb 23, 2023 · I get what you’re saying, but when I just debug print {{ item }} using the results variable, I see all of the snapshots listed. Learn more about Labs. yaml: Dec 20, 2014 · I'd like to be able to set configuration variables for my ansible modules as standard host/group vars. Let‘s dive deep into best practices for taming nested variables for organization, flexibility, and simplified maintenance at scale. Accessing values from these nested structures requires specific syntax, either using bracket notation or dot notation. com']['facter_hostname'] # an example of defining a host variable via the new YAML host file system, that was defined May 18, 2021 · I have a problem with implementing Ansible nested reference YAML variable file. macaddress }} {{ ansible_{{ net2 }}. groups in a with_items, but that doesn’t seem to work. ipv4. You must use either bracket notation or dot notation. Creating valid variable names ¶ Before you start using variables, it’s important to know what are valid variable names. The value for path is merged by << or merge operator. However, we recommend you use the Fully Qualified Collection Name (FQCN) ansible. 0) UPDATE Feb 23, 2020 · Ansible: Unable to access nested variable in group_vars file. Members Online netspazz May 11, 2019 · Is there a way to build a nested set of loops to do this? The with_nested construct applies every attribute to every device; I need only a single attribute per device per call. May 28, 2015 · Working solutions would be using the set_fact module (double lines of code, not really smart) or including different variable files, depending on app_env. For example, to reference an IP address from your facts using the bracket notation: Jul 31, 2015 · In my Ansible playbook I have a nested variable declaration as shown below in a variable file. May 5, 2021 · So, there are two cases where this will apply: When trying to access a key of a dictionary from a variable, you would simply use the variable as is, remembering that, when you are inside the expression delimiters {{ }}, a string will be interpreted as a variable, if not enclosed inside simple or double quotes. example. inventory_hostname. May 26, 2022 · Ansible - Can't access value - Got error: 'dict object' has no attribute Hot Network Questions Increasing Numerical Accuracy in LaTeX Calculations Jan 12, 2024 · Use variables in files. Is there any Aug 20, 2013 · Because of how it’s implemented, if you have ‘{{blah}}’ as a value in any variables, you must explicitly escape it else it’ll always render (and fail if the ‘blah’ variable doesn’t exist). I want to do define a structure like the following: STRUCTURE: list1: {var1: val1, var2, val2, var3, val3} list2: {var1 Jan 24, 2017 · There is a concept of group depth in Ansible (at least in recent versions). I’ve tried different YAML formatting options to no avail. g. --extra-vars "repo. However it seems, that nested variables become literal strings of the expressions: Oct 19, 2020 · Stack Exchange Network. Any idea how I can have nested variables in ansible when statements Aug 8, 2018 · I try to use a conditional when inside a task with a nested loop. Each role needs auth parameters (ignore the env-vars Feb 24, 2022 · I am struggling to understand how to use nested variables in Jinja2/Ansible I have the following Variables in a yaml file dual_homed_workloads: switch1: - tag: 200 description: DB-Serve Feb 24, 2023 · Nested variables. com']['ansible_eth0']['ipv4']['address'] }} # an example of accessing a facter fact (which aren't nested) {{ hostvars['foo. The output yaml is similar to the simplified version below. This means that the data held within the variables value should be treated as unsafe preventing unsafe character substitution and information disclosure. Regards Racke Jan 25, 2017 · There are no "nested variables" in your example. results then I will get a list of dictionaries and each of these dictionaries will have another list of files kept in files section. How can I access them from within the module? I'm aware I can pass all the values in the actual call, but that seems really tedious. yaml: start_of_nested variables: var3: value3 var4: value4 backend. Since the loop variable item needs to be evaluated before the when condition is evaluated, I had to expand the variable item. 1, Python 2. with_items introduces the special variable item, which is the particular item of the current loop. Referencing nested variables Many registered variables (and facts) are nested YAML or JSON data structures. Magic variable names are reserved - do not set variables with these names. For example, into the group_vars/all. loop, nested variables. environment. Therefore I want to access all the users. I tried to create a block and put all tasks with the same when condition into the block but the issue is the same. Members Online netspazz This module is part of ansible-base and included in all Ansible installations. . Therefore, you instruct the command module to execute { echo, namely whatever it is you have in with Referencing nested variables ¶ Many registered variables (and facts) are nested YAML or JSON data structures. Jun 8, 2018 · Interfaces are different for every server I’m working with, so to print details of each interface, let’s say I’m using the following code in a template: interfaces: {% for a_value in ansible_interfaces %}{{ a_value }} {% endfor %} Now this ends up printing: interfaces: lo enp0s3 enp0s8 This gives us variables ansible_lo, ansible_enp0s3, ansible_enp0s8 that I want to refer. ign ├── group_vars │ └── all ├── hosts └── pb. Variables can be used in expressions, conditionals, loops, and other template constructs. May 17, 2016 · I'm trying to render some nested variables to a file using templating in ansible. I use Ubuntu 20 with Python 3. Obviously, if I do: Jun 30, 2022 · actually, I'd like to know how to use the value of a nested variable in a loop. Ask Question Ansible and nested variables in . For example, to reference an IP address from your facts using the bracket notation: Jun 13, 2014 · {{ansible_default_ipv4. Hoping someone can help me understand the indexing, and why the variables are equal to the values. Thanks to @smily for pointing me in the right direction. You cannot assign a value to a dictionary key in the inventory file. Then on the zipfile role with with_nested I use the variable to pass the variable name into the s3 put to be used as the bucket and file name. c. 4 it works flawless. debug: var: stuff. Get early access and see previews of new features. yml, the dev. ansible-playbook fo Feb 25, 2025 · Note. --- - hosts: all vars: food: fruit: apple veggy: onion tasks: - ansible. If I add in the loop and use {{ item[0] }}, I see the same information, and description is included. kssmsixn jfolrhc pzmdb zyoq deuzk tleyz ebhng pzb nrpnlg pog miijv zhq gvzu ndkbp gnwinmg