# ansible jinja2 template to loop through variables that has multiple values for each variable on a per host basis **URL:** \ **Category:** Ansible Project\ **Created:** [January 19, 2019, 4:04pm UTC](https://forum.ansible.com/t/ansible-jinja2-template-to-loop-through-variables-that-has-multiple-values-for-each-variable-on-a-per-host-basis/29477 "2019-01-19T16:04:47Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![pnagaraj7656](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pnagaraj7656](https://forum.ansible.com/u/pnagaraj7656)\ **Post date:** [January 19, 2019, 4:04pm UTC](https://forum.ansible.com/t/ansible-jinja2-template-to-loop-through-variables-that-has-multiple-values-for-each-variable-on-a-per-host-basis/29477/1 "2019-01-19T16:04:47Z")
My Requirement is as follows Below is the list of variables and its multiple values : host1 env : qa,dev,uat grpn: g1 type: t1 port: 1401 type: t2 port: 1402 type: t3 port: 1403 host2 env : qa,dev,uat grpn: g21 type: t1 port: 1605 type: t2 port: 1606 host3 env : qa,dev,uat grpn: g1 type: t1 port: 1503 type: t2 port: 1504 etc and the list goes on for many hosts(more than 100 hosts and each host has min 3 applications at 3 diff ports) I need to do application deployment based on above concept: i,e host1 belongs to g1 and one application will be of type1(t1) running under port 1401 and another application of type t2 running at port 1402. I also need to capture the groupname(g1,g2,g2 etc) for every application. Thus for each host there is a dictionary of type and port, For each type , the port is different. The above list is huge and its difficult to write so many stanzas in yml format in vars\_file. So I thought I’ll use host\_variables in inventory like below after placing the hosts in different environments under the inventory. host1 grpn: g1 port: [1401,1401,1403] type: [t1, t2, t3] host2 grpn: g2 port: [1605,1606] type: [t1, t2] My expectation is that for each host it should pick the groupname(grpn) and also for type 1 it should pick port1 and for type2 it should pick port2 and deploy the application respectively… But Im not aware how to read the variables from the inventory and how to ensure the type - port pair is maintained while deployment. I thought I’ll create a jinja2 template like below but Im still confused how to achieve the type and port match. test.yml.j2 ---
**Author:** ![Mauricio\_Tavares](https://avatars.discourse-cdn.com/v4/letter/m/b5e925/32.png) [@Mauricio\_Tavares](https://forum.ansible.com/u/Mauricio_Tavares)\ **Post date:** [January 20, 2019, 4:33am UTC](https://forum.ansible.com/t/ansible-jinja2-template-to-loop-through-variables-that-has-multiple-values-for-each-variable-on-a-per-host-basis/29477/2 "2019-01-20T04:33:54Z")
> My Requirement is as follows > > Below is the list of variables and its multiple values : > > host1 > env : qa,dev,uat > grpn: g1 >   type: t1 >     port: 1401 >   type: t2 >     port: 1402 >   type: t3 >     port: 1403 > > host2 > env : qa,dev,uat > grpn: g21 >   type: t1 >     port: 1605 >   type: t2 >     port: 1606 > > host3 > env : qa,dev,uat > grpn: g1 >   type: t1 >     port: 1503 >   type: t2 >     port: 1504 > > etc and the list goes on for many hosts(more than 100 hosts and each host has min 3 applications at 3 diff ports) > > I need to do application deployment based on above concept: > i,e host1 belongs to g1 and one application will be of type1(t1) running under port 1401 and another application of type t2 running at port 1402. I also need to capture the groupname(g1,g2,g2 etc) for every application. > > Thus for each host there is a dictionary of type and port, For each type , the port is different. > > The above list is huge and its difficult to write so many stanzas in yml format in vars\_file. So I thought I'll use host\_variables in inventory like below after placing the hosts in different environments under the inventory. > > host1 grpn: g1 port: [1401,1401,1403] type: [t1, t2, t3] > host2 grpn: g2 port: [1605,1606] type: [t1, t2] > > My expectation is that for each host it should pick the groupname(grpn) and also for type 1 it should pick port1 and for type2 it should pick port2 and deploy the application respectively.. > > But Im not aware how to read the variables from the inventory and how to ensure the type - port pair is maintained while deployment. > > I thought I'll create a jinja2 template like below but Im still confused how to achieve the type and port match. > > test.yml.j2 > > --- > deploy: > - host: host1 >   portnum : {{ port }} >   groupname: {{ grpn }} >   type: {{ type }} >    env : {{ env }} > > Kindly suggest how I can achieve this??       Have you searched previous posts in the mailing list? Have you read the loop examples in the ansible docs? ---
**Author:** ![pnagaraj7656](https://avatars.discourse-cdn.com/v4/letter/p/cab0a1/32.png) [@pnagaraj7656](https://forum.ansible.com/u/pnagaraj7656)\ **Post date:** [January 20, 2019, 8:14am UTC](https://forum.ansible.com/t/ansible-jinja2-template-to-loop-through-variables-that-has-multiple-values-for-each-variable-on-a-per-host-basis/29477/3 "2019-01-20T08:14:25Z")
Hi Mauricio, Yes I have read for loop in ansible. But I’m not aware how to loop through the variables thats placed in the host inventory file. I need assistance in knowing where to place my variable list .