By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Web development, programming languages, Software testing & othersWeb development, programming languages, Software testing & others1 Online Courses | 4 Hands-on Projects | 8+ Hours | Verifiable Certificate of Completion | Lifetime Access So, we can make use of set_fact to manipulate the data and provide input to other tasks accordingly. For different tasks we will get different output and it is stored in the way it is defined in ansible documentation. I tried giving something like - name: Binding the interfaces shell: echo {{ item.item.stdout}} with_flattened: var2.results # with_indexed_items: var2.results register: var3 Run the register_conditions.yaml playbook, as follows: We will take some examples, but before going there, we first understand our lab used for testing purposes.Here we have an Ansible control server named ansible-controller and two remotes hosts named host- one and host-two. Here we discuss an introduction to Ansible Register, how does it work with respective examples. For example, if you need only the file names then you can use You can loop through the register variables using the with_items statement. If the directory is empty, the message Directory is empty will print. Here we used stdout_lines to display only the output ofIn the below example, we use a condition by when and check whether a file exists or nor on remote hosts, if the file does not exist, then create it, else skip creation. In this article we will learn and see examples of using register in different scenarios. The After the execution check.txt_bkp and check2.txt_bkp are created.For more information on how to work with loops in Ansible, you can refer Mydailytutorials.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We will also see how only a piece of information in the registered variable can be used.For any task output, which we register in a variable, it is stored in a pre-defined format in JSON. In the following task, I am trying to make a backup of all the text files. Here whatever command you run its output will be saved in JSON format and then you use that information the same as you used facts.For another reference for a playbook with content like below:In which we are checking the status of httpd service on a remote server named host-one. The variables will contain the value returned by the task. You can execute the ls *.txt command using a shell module and capture the output to a variable.Suppose you need to print all the .txt files in a particular folder.
This is an important feature, as this output is different for each remote host, and the basis on that we can use conditions loops to do some other tasks. Yo can see all the returned values in the output section.You can select the individual parameter from the above output by appending the name with the return value. Ansible register is a way to capture the output from task execution and store it in a variable. We create a playbook like below. When we see the output we will see the values as per ansible documentation and some fields which will be shown in each output like changed.Below is an output from a task where we tried to copy a file from the control node to the remote node. Ansible register is a way to capture the output from task execution and store it in a variable. You can then use the value of these registers for different scenarios like a conditional statement, logging etc.
Mydailytutorials.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. By using the register module, you can store that output into any variable. You can execute the ls *.txt command using a shell module and capture the output to a variable.In the following example, I have captured the output to ‘find_output’ variable. Ansible registers are used when you want to capture the output of a task to a The variables will contain the value returned by the task. For this first see the contents of the playbook likeAfter executing it, we will see below output, in this output under stdout_lines we will see the name of files that are found.If you want to see the files only, then update the playbook and make the debug task like below:In this example, we are checking the free memory and uptime on the remote host.
Also, each register value … For that, first I will store the variables in a register and iterate through each file. We will create playbooks and run Ansible commands on the ansible-controller node and manage the information from remote hosts for executed tasksIn the below example, we try to find the .txt files on remote nodes and capture the output in a variable, then will display that variable find_output. In Linux, is any command is successful, then return code is zero, else it is non-zero.
Theme by Ansible register variable or ansible register module is used to capture or store the output of the command or task. So learn it and use it wisely.This is a guide to Ansible Register. We check the file’s existence, simply by ls, and check the return code. The first task stores the contents of the /home/ansible/test3 directory in the dir_contents variable. Also, each register value is valid throughout the playbook execution. In simple words, when you want to run a command on a remote computer and then store the output in a variable and use a piece of information from the output, later in your plays.