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Ansible compare two registered variables. May 8, 2023 · I have 2 directories $ tree dir{1.
Ansible compare two registered variables. Despite these limitations, the Ansible when variable equals condition is a powerful tool that can be used to conditionally execute tasks in your playbooks. Jul 22, 2022 · I want to compare two date times and get the difference in seconds. Sep 7, 2023 · I am a noobie in Ansible and struggling with comparing two registered values in my playbook. What would be the easiest way to do it? Jan 10, 2025 · Learn how to compare two lists in Ansible playbooks, verify their lengths, and ensure matching elements using robust filters and syntax. Actually it’s more than that – you can also read variables about other hosts. Jun 8, 2020 · 1: Hello Is it possible to search in when condition two strings from single line by matching the registered output. After that I would compare the time zone stored in the register with the variable, time_zone, to see if a Sep 9, 2025 · Note This test plugin is part of ansible-core and included in all Ansible installations. For example, you can run a shell command like ls -l, store its output in a variable called dir_listing, and then use dir_listing later in your playbook. Sep 27, 2022 · From reading 'when' documentation, it doesn't look like it can compare two variables directly. Skip lines matching these regular expressions. Jan 28, 2022 · I have to check if a list of mount points are available on the system. First setup the register for the "grep'ed" variable. Most of them you can find by searching the subject, e. Sep 3, 2022 · I added some references. Dec 7, 2014 · I have an ansible variable passed in on the command line as such: ansible-playbook -e environment=staging ansible/make_server. same_file for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same test plugin name. Team, I have a kubeconfig file and i need to compare if context name and current-context are same, if yes, I want to proceed further else fail. also i think diff (as name of the variable to register the tasks result) leads ansible to confusion, change to diff_result or something. 9+ using jinja test syntax is required. How should I write the statement Sep 27, 2023 · You can use various built-in Ansible variables, module return values, or custom variables in your condition to make decisions based on different factors, such as host facts, inventory variables, or user-defined variables. I am fetching a list of codes from 2 different hosts and trying to compare them, but fail. Nov 13, 2018 · ansible when comparing integer values Asked 6 years, 9 months ago Modified 6 years, 9 months ago Viewed 24k times Nov 27, 2018 · It should ask for password twice and compare if they are equal. ansible doesn't parse pg_master_ip. difference for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same filter plugin name. Important: The ansible-core 2. stdout is a result of an earlier register task. Inside a template you automatically have access to all variables that are in scope for a host. For example: the registered output consists of services and its status 1: httpd disabled 2: tftp enabled I want to search the line and use it in when condition. The playbook looks something like below. Sep 2, 2022 · the split filter for manipulation strings is available as of Ansible v2. I have an Ansible playbook, where I would like a variable I register in a first play targeted on one node to be available in a second play, targeted on another node. g. So, I defined a variable with the list of mount points then extracted the available mount points from Ansible facts. Is that true, and if so, what would be an approach to doing something like that? Aug 9, 2017 · I am trying to compare some variables so here is my case: pg_master_ip is an ip obviously. You're welcome. Seems to me you'll want to split this into at least 2 tasks. Nov 2, 2023 · The register module allows you to capture or "register" the output of any Ansible task and save it to a variable. state, I think. Here's what I have at the moment: vars_prompt: - name: user_name prompt: Enter the user name for password reset private: no - name: pass prompt: Enter the password - name: re-pass prompt: Re-enter the password tasks: - name: Verify Apr 15, 2015 · I have two ansible tasks as follows tasks: - shell: ifconfig -a | sed 's/[ \t]. --- - hos Sep 9, 2025 · Note This test plugin is part of ansible-core and included in all Ansible installations. Loops Ansible offers the loop, with_<lookup>, and until keywords to execute a task multiple times. Sign up for free to join this conversation on GitHub. 2} dir1 ├── file1 └── file2 dir2 ├── file1 └── file2 I want to compare all files in dir1 with all files in dir2 using ansible and print differences like this out May 13, 2020 · Similar Questions 3 – How do I set register a variable to persist between plays in ansible? Similar Questions 4 – How to access host variable of a different host with Ansible? Sep 1, 2020 · Ansible Conditional - Compare registered variable to a value Asked 4 years, 6 months ago Modified 4 years, 6 months ago Viewed 2k times Aug 14, 2024 · How Does Ansible Register Work? You will save the task's output in these variables on the Ansible Control Server. As a workround in Ansible v2. With Ansible, you can execute tasks and playbooks on multiple systems with a single command. However, we recommend you use the Fully Qualified Collection Name (FQCN) ansible. Jul 2, 2015 · I need to create new variable from contents of other variables. 10 one could also implement a Custom Filter Plugin and so a simple Ansible Jinja2 filter to split a string into a list. 12. Test syntax Test syntax varies from filter syntax (variable | filter). 19/Ansible 12 release has made significant templating changes that might require you to update playbooks and roles. Aug 10, 2021 · Given the registered outputs stored in the variables reg1 and reg2 respectively, split the lines reg1. I could not find a way to compare two variables. If you just compare the raw registered variable, you’ll be comparing a dict that is not the same. Jun 5, 2014 · My next task is to compare, or do a diff, on particular fact data from each device. From reading 'when' documentation, it doesn't look like… If you’re trying to compare the state of the pre and post upgrade state variables, you would need to compare pre_upgrade_state. You can define these variables in your playbooks, in your inventory, in reusable I'm trying to compare two variables in Ansible 2. yml I want to load in some variables in my role dependeing on the valu May 8, 2023 · I have 2 directories $ tree dir{1. Common return values are documented here, the following are the fields unique to this module: The diff_text split into lines. We’ll show how to do that in a bit. Sep 9, 2025 · Note This filter plugin is part of ansible-core and included in all Ansible installations. Examples of commonly-used loops include changing ownership on several files and/or directories with the file module, creating multiple users with the user module, and repeating a polling step until a certain result is reached. For example, you might want to use a system default for some items and control the value for others. In most cases, you can use the short plugin name same_file. For Using variables Ansible uses variables to manage differences between systems. below is my shell which i want to integrate and run with ansible. - name: "Register the variable you want here" command: bash -c "echo {{ MASKS. Found: unit_number == {{ disk_unit }} If I remove the {{ }} the statement no longer works. Making variables optional By default, Ansible requires values for all variables in a templated expression. *//;/^\(lo\|\)$/d' register: var1 - debug: var=var1 - shell: ethtool -i {{ item }} | grep bus-info | cut -b 16-22 with_items: var1. How can I do that? I have tried the following option Jul 20, 2017 · This script was intended to obtain the time zone on each server and store it in a register. By doing this a filter like | split() can made be available in older versions. Here are the items we could not find in your description: click here for bot help. Check what’s in the registered variable using the debug module to be sure. Registered variables make this type of usage possible. Already have an account? Sign in to comment. I need to check if my variable contains only numbers(GID). However, you can make specific module variables optional. Currently I'm using something like this: - command: echo "{{ var1 }}-{{ var2 }}-{{ var3 }}" register: newvar The problem is: Usage Ansible facts Ansible facts are data related to your remote systems, including operating systems, IP addresses, attached filesystems, and more. 11 but you can just use the Python method . In most cases, you can use the short plugin name difference. stdout. For Red Hat Ansible Automation Platform subscriptions, see Life Cycle for version details. Sep 9, 2025 · In most cases, you can use the short plugin name same_file. 5, using a jinja test as a filter will generate a deprecation warning. 9 or 2. This diff would happen by sending both variables (facts) to another custom module to analyze. Usually, the registered output is stored in the attribute stdout and the attribute stdout_lines keeps automatically split lines. Special and environment types explained. splitlines(). It cannot check if a variable is between two values. mask }}" register: MASK Then (and I'm a little unclear what the gaol is here but), use set_fact with a when conditional. Apr 9, 2024 · The goal is simply to compare the checksum of some files on a host, with the checksum stored in the static dictionary. You can use registered variables in templates and action lines as well as in conditional when statements. It cannot check if a variable is a member of a list. To make a module variable optional, set the default value to the special variable omit: Sep 13, 2019 · I’m trying to compare two variables in a “when” statement - when x = y do something. match for easy linking to the plugin documentation and to avoid conflicting with other collections that may have the same test plugin name. I was going to do a single host per playbook and pass the registered variable to a 3rd playbook, but variables are only valid within the pb. Here the variable defines the location of a file, which can vary from one system to another. A registered variable always contains the status of the task that created it as well as any output that the task generated. Ansible user guide on registered-variables So, no it is not possible to keep the result of both tasks. How to work with Ansible variables in playbooks, inventories & command line, and where to set them. They are useful when you are creating or editing a playbook or role and you want to know what it will do. If the provided before and after are a string, they will be split. As of Ansible 2. builtin. Synopsis Parameters Examples Return Values Synopsis Compare two facts or variables and get a diff. - name: "Use set_fact to maybe change the variable you want" set_fact: change_me May 30, 2018 · your "diff" task is missing the shell keyword, Ansible thinks you want to use the diff module instead. You can access this data in the ansible_facts variable. By default, you can also access some Ansible facts as top-level variables with the ansible_ prefix. May 23, 2024 · How to store and pass the value of register variable in loop using ansible Ansible Project 2 20 April 27, 2017 Ansible with registers using loop Ansible Project 1 4 July 22, 2015 Need to verify this is really a bug Ansible Project 8 1 April 24, 2014 using register stdout_lines in with_items loop Ansible Project 6 268 December 22, 2022 iterating Dec 21, 2021 · Could you please explain to me how to compare values - strings in Ansible to set up the correct variable? - name: Set directory set_fact: full_directory: " { { directory }}/ { {folder} Learn what Ansible conditionals are with examples for when and register. Historically Ansible has registered tests as both jinja tests and jinja filters, allowing for them to be referenced using filter syntax. The diff in text format. It cannot check if a variable is greater than or less than a specific value. bond0. In check mode, Ansible runs without making any changes on remote systems. Jul 19, 2023 · If vm_name = ‘NED-DEV601-X’ I have two match group name but my logic stops after the first match how can I search for all the groups in the register variable. This code works: when: unit_number == {{ disk_unit }} BUT I get a warning: [WARNING]: conditional statements should not include jinja2 templating delimiters such as {{ }} or {% %}. I have one more task as follows in tha same Sep 9, 2025 · Validating tasks: check mode and diff mode Ansible provides two modes of execution that validate tasks: check mode and diff mode. If I could u Sep 9, 2025 · You create the name of the registered variable using the register keyword. For example, ansible-doc -t module getent gives you the description of the module getent. Learn how to leverage Ansible's diff module for efficient file comparison, configuration tracking, and detecting system changes across infrastructure environments. Modules that support check mode report Jan 29, 2019 · I am using the assert module to verify my variables defined through the command line. These modes can be used separately or together. May 10, 2019 · In order for the community to handle your issue effectively, we need a bit more information. See how to use AND, OR, and NOT operators for multiple conditions. Simply put, when you run a command on a distant computer, save the output in a variable and use a piece of information from it later in your plays. In most cases, you can use the short plugin name match. To represent the variations among those different systems, you can create variables with standard YAML syntax, including lists and dictionaries. However, the quickest way is using ansible-doc. . Ansible json_query. This is the latest (stable) Ansible community documentation. Here is the playbook I am using May 15, 2018 · 4 This happens because Ansible will store the result even when the task is skipped: If a task fails or is skipped, the variable still is registered with a failure or skipped status, the only way to avoid registering a variable is using tags. You can access the string contents of the registered variable using variable. stdout_lines register: var2 - debug: var=var2 which is used to get a list of interfaces in a machine (linux) and get the bus address for each. wbon uudevex yqnua mrf uxg lmpe zgr zkifu nxplx eoiob