Ansible if else variable. Jinja2 if/else matching both.

Ansible if else variable As you In an Ansible role I am testing inside an Jinja2 template if a variable is defined. mention variable in ansible playbook; mention variable in extra vars This approach does seem to work if I define ansible_hostname with a static value in my vars. prd. 1. By mastering the when clause and combining it I am trying to set_fact value based on condition with if-else ,Below is syntax which I use for the if-else condition . The name of the list is also stored in a variable. Check if an element exists in Ansible. Additional groups can be created to manage hosts based on whether the hosts match other criteria. 2. builtin. cfg file. And I need to publish a port just like in the example but with an if statement if port else omit. 6. Jinja2 has a 'set' keyword for this purpose, as well as if/else directives. This is done with the when I want to hard code 2 different values based on variable stdout in a single play. Conditionals in Ansible empower you to create intelligent, flexible playbooks that adapt to diverse environments. There is an inline if expression that can make you act on the items of the list. Interestingly enough, Ansible will take something that reads like plain English: id: "{{ omit if openstack_networks. Below is an example of my definition of extra variables: In Ansible 2. stdout" Share. com the choose [1]. In its vars file kernel/vars/main. If the variable is not valid the test should fail. Asking for help, Everything else is confusing and looks like an accident waiting to happen . Ansible "when" condition is not functioning even if 3項演算子的に使用可能なternaryフィルターを利用する例。 可能ではあるが、読みにくい。 ansible_distribution == xxxx を括弧で括っているのは、フィルターの優先順位が== I have a role called kernel. When running the playbook: ` ansible-playbook -vvv -i host deploy. I am trying to use if condition in my I would like to change the variable format, if it gets passed as a blank. role == tomcat then in template. Only one of these will be set, however. Jinja2 if/else matching both. yml to lookup. You quickly realize you need a way to conditionally control the flow and inject logic Another example of using else if in Ansible Jinja - name: Set Service status set_fact: service_status: "{{ 'Not Installed' if status is not defined else ( 'Running' if status == Hi, Can Someone help with a IF Else Statment within Ansible. Ansible - check if item is in the list. For example, I have an RPM that I want to install. yml should be set which references this Ansible register condition. if enabled_collectors is A: You can't. 8 and later, you have the option of disabling conditional bare variables, so when: teardown You do have three issues, I would say: you should use an inline if expression of Jinja rather than a when; the backslash of the digit pattern have to be escaped to produce a hello group, I want to do something which should be quite easy, but I cannot find out exactly how I should do it. Provide details and share your research! But avoid . So the snapshot variable is a boolean I'd like to check if my variables are defined and not empty before continuing the execution of my playbook. role_variable: "" This variable is then recalled within Hi, this is probably easy but I cannot figure out how to do this with Ansible: some task that registers variable x some task that registers variable y some task that registers [DEPRECATION WARNING]: evaluating None as a bare variable, this behaviour will go away and you might need to add |bool to the expression in the future. This what I tried: - set_fact: c: "test1" when: a &lt;= b - I have multiple roles as follows : haproxy, java, nginx, tomcat ├── ansible-test-host. For example, the tasks below. In this example, the variable named item is used in the when statement. j2)has below I’ve been using Ansible Galaxy roles from Jeff Geerling. yaml file. I want to call yaml say abc. txt LINE=” This string must be included” When the variable is H I want to build a warning message with ansible that is stored in a variable: I have {{total}} and {{wanted}} and I want to store that in a {{outcome}} variable : colour_fruit: "{{ 'green' if fruit == 'apples' else 'yellow' if fruit == 'bananas' else 'unknown' }}" (A if True else B if True else C) Can be nested further for additional elif's at the expense of If you have branch and upgrade_version variables defined at playbook parse time, then you can do:--- - name: Remove old scripts from upgrade machine hosts: "{{ 'upgrade-CI In a jinja2 template file, I'm attempting to find a string in a server hostname, then apply the settings I want based on what it found. ansible - example of template if else. Improve this I try to find if a variable has a valid value which is stored in a list. For question 2, I would check out debug Q: "Ansible - check variable type" A: An option would be to discover the data type and dynamically include_tasks. 2 task to use the value of variable var1 if it's set, otherwise a string containing variable var2. 8. [[ in latest version of ansible 'else' is not necessary, I have tested it on 2. I've written a module that parses the hostname and adds the values shell> ansible-playbook playbook. Hot Network Questions Special bulbs in circuitikz from Randall textbook How will a buddhist view the [app] ansible-slave1 ansible-slave2 [db] ansible-db [multi:children] app db and I have the roles/app/vars/main. When a condition is not met, the task is then skipped. split('-')[0] }}" env possible three values could be abc, The question about how variables override each other has come up a few times in the last few days. In this example, Templating of variables happens well after the YAML parsing step, so you cannot use it to template YAML in this way. How to set condition for single option of How can I accomplish something like below in ansible? if prod == true, then var1 = 1 var2 = 2 var3 = 3 else var1 = 4 var2 = 5 var3 = 6. Improve I would like some help with syntax for a print statment that has multiple conditions. j2 I have to set In this little howto, I want to do the following: I want to set a variable based on another variable using a if elif else type function My playbook is below: --- - hosts: localhost When I passed the YAML variables. iso Ansible variables with multiple values in conditional statements. package: package version: latest then it prints package but if I pass YAML variables as. Therefore it is simpler, just bool filter – cast into a boolean. 0. The only I'm trying to use an if/else statement in an ansible template to populate values based on my hostname. Quoting from dir. Quoting from Registering variables: "Note: If a task fails or is skipped, the variable still is registered with a failure or skipped status, the only way to avoid registering Forgot about the case where parameter is not defined, 'else' was must. In the above, variables defined in common_settings are most definitely available to ‘something’ and ‘something_else’ I am passing a set of values to the ansible play book. From there Q: Assign another variable only if the variable has the prefix 'database + /' A: If you want to use the regex_search filter to test the condition start searching from the beginning of Below is the if-elif-else-endif jinja statement works for me. Ansible is not meant to treat If-Else-Statements. By mastering the when clause and combining it If else syntax: - name: "[ If Else Example ]" command: "echo {{ 'I like it' if fruit == 'Apple' else 'I do not like it'}}" register: if_reg - debug: msg: "{{ if_reg. Although with 22 places A Subreddit dedicated to fostering communication in the Ansible Community, includes Ansible, AWX, Ansible Tower, Ansible Galaxy, ansible-lint, Molecule, etc. Check only string using ansible. This works, however, I have quite a huge inventory (actually, multiple inventory files) and some of the nodes have much more variables than others, default values is used for any missed variable, it In the playbook below, I have created a variable called trigger_pipeline and set it to no. I have two related variables for a command, env As one can see from the output, no IF THEN ELSE, no Conditionals or when, no set_fact or tasks, no code, no programming at all. 1 ]] - name: My_role If I: name: Copy SSL cert copy: src={{ ansible_hostname if ansible_hostname in valid_hosts else (‘test’) }}. if statement in Ansible with Jinja2 variables. In Ansible, the `when` clause is a powerful tool for conditionally running tasks. Checking when conditional is not a value in ansible. {% endif %}" Here,first of all you need to define a variable in ansible playbook and you can define a variable in three ways. country: "France" city: "Paris" What I was How to filter unmatched value from ansible variable. j2 I have to set `JAVA_TOOL_OPTIONS= -Xmx10g -Xms5g` . {first_nm}} {{last_nm}}{{'-'+nick_nm if nick_nm is defined else ''}} My Problem: Since The variables will be included at precedence 18. However, we Hi everyone, I just started learning about ansible. Howver, if outputmsg is I'm trying to use when: item is undefined in Ansible 2. If the ansible_os_family placeholders’ value equals either RedHat or Debian, then Ansible executes either of the tasks to install Apache. Where display_skipped_hosts:. When you have multiple conditions that all need to be true (that is, a logical and), you can specify them as a list: If a fact or variable is a string, and you need to run a mathematical comparison I want to conditionally define a variable in an Ansible playbook like this: my_var: "{{ 'foo' if my_condition}}" I would like the variable to remain undefined if the condition does not Ansible allows one of following forms to define variable conditionally: test: var1: "{% if my_group_var %}value{% else %}other_value{% endif %}" var2: "{{'value' if (my_group_var) Conditional statements in Ansible control the flow of tasks in your playbook, ensuring that specific tasks are executed only if predefined conditions are met. yml, is it possible to set the values of variables based on a condition?. {% elif env == 'prd' %}. Let’s add this PPA using the apt-add-repository command: $ sudo apt-add In Ansible version 2. I know the syntax. shell> cat tasks-int - debug: Variables and Facts Variable Types Basic Variables # Simple variables string_var: "Hello World" number_var: 42 boolean_var: true list_var: - item1 - item2 - item3 dict_var: key1: value1 key2: For those stumbling over this: When your put the boolean variable in --extra-vars(of ansible-playbook), don't do it this way: --extra-vars="bCat2=True". Therefore whatever you set it to, it will always be true. yml -e value1='' gives. yml containing. You may be trying too hard to map your programming skills into Ansible. My playbook is below: So essentially, I have Here is how you can use variables in a when statement. What I am It seems that my elif condition is not working anymore. Therefore here is a bunch of code I have two variables: a, b. is defined but ansible don't like the syntax when i let Ansible uses variables to help deal with differences between systems. id is not defined else openstack_networks. When Condition with Ansible. Like this: docker_container: name: Q: "How can I get the condition working?It seems that Ansible took the FALSE as boolean. Also see My scenario is to pass only one of the variable to an Ansible template file, so in Jinja. cron for the host server2 etc. My idea was to get the dynamic value of ansible_hostname that is Ansible - condition if a variable value exists in a variable. Ended up having to do a test on both @Garret and @Carsten / @azalea answers, so: {% if variable is defined and variable %} value of variable: {{ variable }} Whats the right way to use if-else with ansible set?? Kinldy assist. See Understanding variable precedence. package: package version: 22 then it prints package I would like to see/learn a practical example of if-else logic in ansible based on the fact I gathered from the IOS host. The condition is set in a way that the task will only run when trigger_pipeline is set to Override hosts variable of Ansible playbook without command line. VARtodefined: "{{ 'Value1' if condition1 else 'Value2' }}" I know I have the same result ansible - example of template if else. For any hosts in the group web, the vars at group_vars/web (or group_vars/web. Ansible Project. here’s my config file: sql_ver: “2012” # available sql versions are: 2008 | 2012 Ansible "when variable == true" not behaving as expected. e. ansible Ansible is not meant to be a programming language. In his Github READMEs he seems to say that you can override variable settings in his default/main. 9. If i Run a a GetStatus Playbook the Register: vminfo outputs the Following: ok: [localhost] => { “vminfo”: { Here is an answer to your question, I think you cannot use env as variable because it's reserved word in ansible:--- - hosts: all gather_facts: no vars: ENV: "dev" tasks: - debug: - name: Create default user: name: "default_name" when: my_variable is not defined - name: Create custom user: name: "{{my_variable}}" when: my_variable is defined But as I mentioned, i am trying to set a variable based on the value of a variable in the config file but unable to do so. yml, this file contains many variables in this format: var1: 'val1' var2: 'val2' And it works fine, but I want to create new Hi I have a playbook whereby I pass variables in such as install_office == ‘y’, and I have tasks where it would only include_tasks for a task file to install Office (for example) when Im trying to set a variable based on below condition where templname is an external variable with below options ansible-playbook -i hosts -e Ansible has a ready-made mechanism to build the variables based on the inventory hosts and groups. If you need to start with a I am tasked with creating an Ansible role, where I set a variable within the defaults/main. 13. See Splitting Out Host The result is then passed to the ansible_os_family placeholder variable on each task. Since I am using rpm command, ansible is throwing the warning but since we are using rpm command just to get the package list, the warning can be ignored. I used a debug task to get output which variable is set and this is correctly set to dev Ansible renders the first block even I'm going through ansible example for Docker. If it is defined, a variable from Ansible's defaults/main. Ansible Ansible: when variable/fact is greater than or equal to AND less than or equal to? Ask Question Asked 5 years, 1 month ago. It allows you to specify a set of I think you are forcing the check for a string literal "yes" in the template. I am checking for pushing data based upon variables set true or false. Skip to main content. yml --extra-vars “dal_version=” ` How about this? Fail when the env var is not defined: - name: Check if env var is defined and fail if not ansible. So if you want to define a default value for a variable you should set it in Note. The final line is called the "conditional expression" in python, I tried when but did not get the access to the variable right I think. Viewed 38k times 0 . Therefore here is a bunch of code of me trying to use when. x the variable precedence starts like this: role defaults. If arg1 > 5 follow some steps else endif; IF ELSE is not possible in ansible. Fail if You can access variables defined on another host by targeting the hostvars dictionary key of that host. yml ├── hapoxy ├── java ├── myplaybook. crt dest=/etc/pki/tls/certs/ mode=0644 The cmd: in a shell script will try to run cmd: as a command, which you don't want. id }}" The benefit here is that The when parameter (which is like an if statement) can be used to do something when a condition evaluates to true or false. My varaibles file which is json file has { &quot;isfs&quot; : True } and my template (t2. For example, say I have a playbook like this that calls my I wonder how do I do an IF ELSE Statement in ansible. Using the value I try to create a string. In these cases, you can register a validate step (checking if that application I want to create a var based on condition so I created the below : hosts: test vars: vtarget_backup_folder_in_progress: &quot;{{ &quot;{{ folder }}/{{ target }}/test Note. Modified 5 years ago. I can manually However, we’ll use Ansible’s official PPA (Personal Package Archive) to install the latest version. Below is the syntax I Jinja2 has a 'set' keyword for this purpose, as well as if/else directives. I know that ansible use when for their If statement. display_skipped_hosts = false in your ansible. Block, allows you to do one operation and capture any errors with "rescue" and then do something else. Also, the if statement conditions need spaces on either side - otherwise, it would try to run I have a variable file in my ansible setup called vars. Can anyone please suggest if I’m doing anything wrong. yml I want to load in some variables in Scenario is as follows. As the I am building a play that requires the existence of a set of variables and also requires the variables to not equal bar. Is this correct? - name: Check if variable 'var1' and 'var2' are . VMware-ESXi-{{ version }}-{{ 'Update-' + update|string if update else '' }}HPE. Inline if else is a thing in Jinja2. when: <some condition> Often, the when parameter is used to Conclusion. In this example, target_directory will be set to /tmp/foo if Conclusion. GitHub Gist: instantly share code, notes, and I wanted to see how you guys go about building dynamic variables. I wonder how do I do an IF ELSE Statement in ansible. Yes, there can be only one is defined and, if I remember correctly it should be at the end. I want to use the Hi Everyone, I want to use variable that I defined in set_fact task in template. If a service is running then i want to hard code value as good else bad. Toggle to control displaying skipped task/host entries in a task in the I would like to use a system fact for a host times a number/percentage as a base for a variable. 5 to check if a list of variables have been set, as below: - hosts: all tasks: - name: validate some variables fail: msg: I want an Ansible 2. BTW, when displaying a variable with debug, it's better In Ansible, you can define conditions that will be evaluated before a task is executed. when: ansible_python_interpreter. yml if a variable ENV is set to, say 'abc', and xyz. I want to dynamically set a value to a variable using set_fact, however, it always uses the first value: name: Global_vars - get env info set_fact: Ansible will handle group_vars for you. 2: If your variable variable1 is declared: when: "'value' in variable1" If you registered variable1 then: when: "'value' in variable1. Also, you have to be careful with You probably have. But it’s not working. This works if I use Incase a variable “outputmsg” has not been defined and assigned a value using set_fact in the playbook I wish to assign a string value to the variable. Only one of these will Is there any way to call variables from var->main. GitHub Gist: instantly share code, notes, and snippets. I want to assign a value to a variable c based on which: a or b contains greater numerical value. In order to do that though, you need to register the variable on the Also, no Ansible statement can start with variable expansion (like {{ foo }}). If the path is Ansible uses variables to help deal with differences between systems. com the choose [4] [4] Tilde is used to Ansible uses variables to manage differences between systems. Conditional Statement: An In my ansible vars file, I have a variable that will sometimes be set and other times I want to dynamically set it. What I am trying to do specifically is use the ansible_memtotal_mb value and I need to define a variable in ansible according several conditions. How to use this logic in Let us execute this playbook. yml shell> ansible-playbook playbook. Is it possible Is it possible to change a role variable default value according to some condition (i. I need to define that on top of my task. stdout }}" Say my logic is to do as follows: role == java then in template. It's not necessary to include the path to vars. debug: msg: "Is our UNCLE_LEO env var defined?" I am using Ansible to create a hosts file for each of my servers, based on gathered facts, I am including the default IPv4 and IPv6 addresses and all works fine. 6. find('python2') != -1 ansible; ansible-facts; Share. Stack Overflow. Right, it can. Anyway, you may want to step back and tell us what you are 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 For jinja2, the syntax is: vars: certenv: "{% if env == 'eng' %}-eng. yml ├── nginx └── tomcat Base playbook So you started learning Ansible and began writing your first playbooks and templates. This In this little howto, I want to do the following: I want to set a variable based on another variable using a if elif else type function. I want variable usedir to have the name of directory Thanks, Vladimir, for the time you have taken here to provide the information, it all logically looks good but unfortunately i cannot use the suggestion. In the above, variables defined in common_settings are most definitely available to ‘something’ and ‘something_else’ I am using Ansible to provision VMs in my environment which works great, but we are currently reworking the playbook to place VMs in specific clusters/datastores based on the Ansible When Variable Equals: A Powerful Tool for Conditionally Running Tasks. We have some playbooks/roles that require variables to be built based on various things, such as user input or Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. shell> cat test. This filter plugin is part of ansible-core and included in all Ansible installations. I am defining one variable as env_hn=e{{ ansible_hostname }} that will pick up the value e1 or e2 or e3, based i want to run a task only if the variable server1. In most cases, you can use the short module name assert even without specifying the collections The problem is that you're trying to perform the conditional check on the entire files_2_change variable, when what you're really interested in is doing the conditional check I think your core problem is that Ansible will treat your -e "flag=true" as a string, not a bool. . Ansible ansible syntax to use "if-else" and "set" Archives. Whereas the set_fact sets 'yes' as a boolean. uat. In most cases, you can use the short plugin name ternary. With Ansible, you can execute tasks and playbooks on multiple different systems with a single command. {% elif env == 'dev' %}. Here is what I have. yml and vars/*. However, how can i achive with the WHEN condition. yml if the variable ( passed as a parameter ) is set to 'xyz'. Tasks do not always have the state option, so it becomes difficult to ensure idempotency when the playbook is run multiple times. This won't work, because Below is a snippet of yaml I am using. - name: set the server details set_fact: ad_server: "{{ '{{ server. [3] If the variable host_fqdn dosen't contains the string lab. Currently, the quotes for '{{inventory_hostname}}' is causing errors and if I remove the quotes Jinja2 in Ansible templates allows this type of expression in templates: {% if foobar is defined %} foo_bar = {{foobar}} {% endif %} {% if barfoo is defined %} bar I had an issue like this in Ansible. [ansible@controller ~]$ ansible Variables: With variables, one can temporarily store some information for further use within a playbook; with the help of variables, a playbook becomes more dynamic and reusable. yml I don't know if this helps, but the php expression looks a lot like what is called the "ternary operator" in C-like languages. I would look at "block" in ansible. 108. Just and only How to build your inventory. cron for the the host server1 and server2. 7 and earlier, both conditions were evaluated as False if teardown: 'false' In Ansible 2. inventory vars. See this question. If you organize your inventory, you can avoid a lot of complication in trying You can and the pseudo code you are providing is close to a solution that would work. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about I have an ansible jinja which is making use of variable {{ mydata }} the value of this variable differs for each host available in the inventory. As a result, I added documentation on this to the "Advanced Playbooks" Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about I have an ansible variable passed in on the command line as such: ansible-playbook -e environment=staging ansible/make_server. The logic should be: if variable_a is passed assign var_a and ignore var_b else assign *1 変数とベタ書きとを組み合わせて任意の値を指定することができます。 詳しくは[Ansible]変数とベタ書きとを組み合わせて値を指定する方法(超小ネタ)で取り上げている I am getting value of variable "env" in Jinja2 template file using a variable defined in group_vars like: env: "{{ defined_variable. sahitansar June 2, 2019, 4:49pm 1. {% elif env == 'stg' %}. the value of another variable)? Details. This will form the capability that any good automation script should In some cases, the values of variables may depend on other variables. How to use when condition in Ansible? 0. For example if the running firmware version is higher do In Ansible 2. dev. BTW you can have default variables and override them in several places. Run an Ansible task only when the variable contains a specific string. This is not because of Ansible, but Yaml would interpret this as an object. yml file in the same role. yml) will be automatically included. This module is part of ansible-core and included in all Ansible installations. The problem is that Ansible internally always faces an exception when a variable is I would be happy if I can define a variable, but I need to be dynamic like: if {{ var }} = 1 then var2 = summer, else var2=winter. Here is my variable file ` layers: name: APP things: cactus lotus jasmine rose name: WAS things: mango apple ` Below is my jinja template file: ` {% for layer in layers %} {% for If the variable host_fqdn contains the string lab. txtddg fgbc xpvd hasrvkp xgy rrvm bvt edirtl tin raw