# best practice for testing app with many versions **URL:** \ **Category:** Ansible Project\ **Created:** [December 2, 2014, 9:37pm UTC](https://forum.ansible.com/t/best-practice-for-testing-app-with-many-versions/16943 "2014-12-02T21:37:37Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Netanel\_Maman](https://avatars.discourse-cdn.com/v4/letter/n/da6949/32.png) [@Netanel\_Maman](https://forum.ansible.com/u/Netanel_Maman)\ **Post date:** [December 2, 2014, 9:37pm UTC](https://forum.ansible.com/t/best-practice-for-testing-app-with-many-versions/16943/1 "2014-12-02T21:37:37Z")
Hello, maybe you can help me with little query. I have virtual lab based on vagrant and ansible. All vms should be with same app installed but with different version number. What’s the correct way to configure ansible to install a range of versions and keep vagrant know this version (for understable host name)? Since I can’t pass args per host, how ansible can know which version needed? The only way I found is to extract version from hostname with regex. Do you have a better solution? net ---
**Author:** ![Brian\_Coca](https://avatars.discourse-cdn.com/v4/letter/b/6de8d8/32.png) [@Brian\_Coca](https://forum.ansible.com/u/Brian_Coca)\ **Post date:** [December 2, 2014, 11:35pm UTC](https://forum.ansible.com/t/best-practice-for-testing-app-with-many-versions/16943/2 "2014-12-02T23:35:49Z")
I don't know about vargrant, but there should be no issues in setting a variable per host with the version using set\_fact. ---
**Author:** ![Netanel\_Maman](https://avatars.discourse-cdn.com/v4/letter/n/da6949/32.png) [@Netanel\_Maman](https://forum.ansible.com/u/Netanel_Maman)\ **Post date:** [December 15, 2014, 8:04am UTC](https://forum.ansible.com/t/best-practice-for-testing-app-with-many-versions/16943/3 "2014-12-15T08:04:57Z")
Thanks, I missed that..