# AWX Tower callback - No matching host could be found but tower console is working **URL:** \ **Category:** Ansible Project\ **Tags:** awx\ **Created:** [August 30, 2018, 6:46pm UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473 "2018-08-30T18:46:53Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![devulapalli8](https://avatars.discourse-cdn.com/v4/letter/d/ed655f/32.png) [@devulapalli8](https://forum.ansible.com/u/devulapalli8)\ **Post date:** [August 30, 2018, 6:46pm UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473/1 "2018-08-30T18:46:53Z")
I have setup inventory and job template and the call back is returning “No matching host could be found” but actually the tower console I could see host listed in the inventory and even attempted synch and even I could able to run the job template successfully could someone please help me why callback is not working but tower console is working fine. Thank you! ---
**Author:** ![Jonathan\_Lozada\_De\_L](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@Jonathan\_Lozada\_De\_L](https://forum.ansible.com/u/Jonathan_Lozada_De_L)\ **Post date:** [August 30, 2018, 6:48pm UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473/2 "2018-08-30T18:48:10Z")
Can you provide more details on what exactly you are trying to accomplish? ---
**Author:** ![devulapalli8](https://avatars.discourse-cdn.com/v4/letter/d/ed655f/32.png) [@devulapalli8](https://forum.ansible.com/u/devulapalli8)\ **Post date:** [August 30, 2018, 7:10pm UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473/3 "2018-08-30T19:10:10Z")
I need to call tower callback API when EC2 instance is getting launched/provisioned to avoid manual launch job through tower console , I use below command in unix script added in the user\_data section of aws launch configuration curl --data “host\_config\_key=XXXX” [https://XXX443/api/v2/job\_templates/XXX/callback/](https://XXX443/api/v2/job_templates/XXX/callback/) even when I run above curl command from that hosted EC2 instance still its giving same error but everything is good when launching the job through tower console. Please help ---
**Author:** ![cava\_cavamagie](https://avatars.discourse-cdn.com/v4/letter/c/e68b1a/32.png) [@cava\_cavamagie](https://forum.ansible.com/u/cava_cavamagie)\ **Post date:** [December 11, 2018, 11:36am UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473/4 "2018-12-11T11:36:01Z")
same problem ---
**Author:** ![Jonathan\_Lozada\_De\_L](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@Jonathan\_Lozada\_De\_L](https://forum.ansible.com/u/Jonathan_Lozada_De_L)\ **Post date:** [December 11, 2018, 12:32pm UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473/5 "2018-12-11T12:32:21Z")
are you using tower or AWX? ---
**Author:** ![cava\_cavamagie](https://avatars.discourse-cdn.com/v4/letter/c/e68b1a/32.png) [@cava\_cavamagie](https://forum.ansible.com/u/cava_cavamagie)\ **Post date:** [December 11, 2018, 1:21pm UTC](https://forum.ansible.com/t/awx-tower-callback-no-matching-host-could-be-found-but-tower-console-is-working/28473/6 "2018-12-11T13:21:35Z")
awx over openshift 2018-12-11 12:31:56,350 DEBUG awx.main.models.inventory Going to update inventory computed fields 2018-12-11 12:31:56,372 DEBUG awx.main.models.inventory Finished updating inventory computed fields 2018-12-11 12:31:56,446 DEBUG awx.main.dispatch publish awx.main.scheduler.tasks.run\_task\_manager(68c377b9-f391-4e3e-b66e-aa3f5256a75f, queue=awx\_private\_queue) RESULT 2 OKREADY No previous hash found192.168.13.1 - - [11/Dec/2018:12:32:13 +0000] "POST /api/v2/job\_templates/21/callback/ HTTP/1.1" 400 42 "-" "curl/7.52.1" "192.168.10.25" 2018-12-11 12:32:13,626 WARNING awx.api.generics status 400 received by user AnonymousUser attempting to access /api/v2/job\_templates/21/callback/ from 192.168.13.1