# how to use a variable from one task to another task **URL:** \ **Category:** Ansible Project\ **Created:** [July 8, 2021, 6:52am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475 "2021-07-08T06:52:06Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 6:52am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/1 "2021-07-08T06:52:06Z")
Team, I would like to use the variable i got from one ansible task to another task where hosts are different. Please help me use the variable to use it on another task!! ---
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 6:53am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/2 "2021-07-08T06:53:34Z")
When i try to use/inoke on another task, i get error as sec\_tunnel\_ip is undefined. ---
**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\ **Post date:** [July 8, 2021, 7:21am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/3 "2021-07-08T07:21:32Z")
Those variables are scoped to a host, so they’re not available to other hosts. A common trick is to assign them to a dummy host and access them that way. ---
**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\ **Post date:** [July 8, 2021, 7:23am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/4 "2021-07-08T07:23:37Z")
[https://stackoverflow.com/questions/39207616/if-set-fact-is-scoped-to-a-host-can-i-use-dummy-host-as-a-global-variable-map](https://stackoverflow.com/questions/39207616/if-set-fact-is-scoped-to-a-host-can-i-use-dummy-host-as-a-global-variable-map) ---
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 7:32am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/5 "2021-07-08T07:32:49Z")
Thanks a lot, Dick Visser, I just wanted to access it, even with a dummy hostname is ok. let me try that. ---
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 7:56am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/6 "2021-07-08T07:56:19Z")
One more help needed, When I try to do regex to get the ip output, it comes along with the unicode characters such as - [u’ how to eliminate it while grepping it through regex\_search itself. Actual output: “- [u’172.16.121.6’]\n” I want it to be(expected): 172.16.121.6 - name: Obtain secondary tunnel interface ip address ios\_command: commands: - “show interface tunnel1 | sec Internet address” register: output - debug: msg: “{{ output.stdout}}” - set\_fact: intf: | - {{output.stdout | map(‘regex\_search’,‘(([0-9]+(.)[0-9]+(.)[0-9]+(.)[0-9]+))’) | list }} register: sec\_tunnel\_ip - debug: msg={{ sec\_tunnel\_ip }} Output: ---
**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\ **Post date:** [July 8, 2021, 10:04am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/7 "2021-07-08T10:04:32Z")
You're sending only the output of the debug task with the regex\_search applied to the output.stdout variable. We need to see the output.stdout variable before you mangled it. ---
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 10:18am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/8 "2021-07-08T10:18:07Z")
Hi Dick, Below is the complete output of the playbook, [root@tower1 temp\_play]# ansible-playbook testplay2.yml -i /etc/ansible/temp\_play/hosts PLAY [Get the secondary router tunnel ip address] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* TASK [Obtain secondary tunnel interface ip address] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ok: [172.16.12.1] TASK [debug] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ok: [172.16.12.1] =\> { “msg”: [ “Internet address is [172.16.121.6/32](http://172.16.121.6/32)” ] } TASK [set\_fact] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ok: [172.16.12.1] TASK [debug] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ok: [172.16.12.1] =\> { “msg”: { “ansible\_facts”: { “intf”: “- [u’172.16.121.6’]\n” }, “changed”: false, “failed”: false } } PLAY RECAP \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 172.16.12.1 : ok=4 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0 [root@tower1 temp\_play]# Thanks, Charles Daniel ---
**Author:** ![racke](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/racke/32/4767_2.png) [@racke](https://forum.ansible.com/u/racke)\ **Post date:** [July 8, 2021, 10:35am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/9 "2021-07-08T10:35:52Z")
> Hi Dick, Below is the complete output of the playbook, > > [root@tower1 temp\_play]# ansible-playbook testplay2.yml -i /etc/ansible/temp\_play/hosts > > PLAY [Get the secondary router tunnel ip address] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* > > TASK [Obtain secondary tunnel interface ip address] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* > ok: [172.16.12.1] > > TASK [debug] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* > ok: [172.16.12.1] =\> { > "msg": [ > "Internet address is 172.16.121.6/32 \<[http://172.16.121.6/32>"](http://172.16.121.6/32>"); > ] > } Hello Charles, the output looks like a string, so the map filter doesn't makes sense here. Please try: {{output.stdout | regex\_search('(([0-9]+(.)[0-9]+(.)[0-9]+(.)[0-9]+))') }} Regards            Racke ---
**Author:** ![Pushparaj\_Gothandam](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/pushparaj_gothandam/32/5538_2.png) [@Pushparaj\_Gothandam](https://forum.ansible.com/u/Pushparaj_Gothandam)\ **Post date:** [July 8, 2021, 11:30am UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/10 "2021-07-08T11:30:59Z")
Try “{{ output.stdout[0] }}” on the debug task ---
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 1:20pm UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/11 "2021-07-08T13:20:18Z")
returns error as a pattern not matching!!. TASK [debug] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ok: [172.16.12.1] =\> { “hostvars[‘SEC\_HOST’][‘sec\_tunnel\_ip1’]”: “- [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None]\n” } ---
**Author:** ![system](https://us1.discourse-cdn.com/ansible/original/1X/1882d9a01da5d8996a862359b0913cc568a39b84.svg) [@system](https://forum.ansible.com/u/system)\ **Post date:** [July 8, 2021, 2:32pm UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/12 "2021-07-08T14:32:37Z")
no need for dummy, just use hostvars[\][\] if you set the vars on a group you can hostvars[group[\][0]][\] ( 0 is 'first host in group, but you can use random index \<= # of hosts in group) ---
**Author:** ![Charles\_Daniel](https://avatars.discourse-cdn.com/v4/letter/c/3d9bf3/32.png) [@Charles\_Daniel](https://forum.ansible.com/u/Charles_Daniel)\ **Post date:** [July 8, 2021, 5:38pm UTC](https://forum.ansible.com/t/how-to-use-a-variable-from-one-task-to-another-task/35475/13 "2021-07-08T17:38:08Z")
Thanks Brian