Sometimes there are stuck EC2 instances

[SeiryuZ]

stdout

fatal: [172.31.34.8]: FAILED! => {"changed": true, "cmd": ["docker", "network", "create", "-d", "overlay", "hemelb-overlay"], "delta": "0:00:00.017638", "end": "2016-08-04 13:23:53.273828", "failed": true, "rc": 1, "start": "2016-08-04 13:23:53.256190", "stderr": "Error response from daemon: network with name hemelb-overlay already exists", "stdout": "", "stdout_lines": [], "warnings": []}
...ignoring
fatal: [172.31.34.7]: FAILED! => {"changed": true, "cmd": ["docker", "network", "create", "-d", "overlay", "hemelb-overlay"], "delta": "0:00:00.081237", "end": "2016-08-04 13:23:53.724013", "failed": true, "rc": 1, "start": "2016-08-04 13:23:53.642776", "stderr": "Error response from daemon: network with name hemelb-overlay already exists", "stdout": "", "stdout_lines": [], "warnings": []}
...ignoring

TASK [Run hemelb containers] ***************************************************
changed: [172.31.34.10]
fatal: [172.31.34.11]: FAILED! => {"changed": true, "cmd": ["docker", "run", "-d", "--net=hemelb-overlay", "-v", "/shared:/shared", "seiryuz/hemelb-core:0.0.3"], "delta": "0:00:27.893334", "end": "2016-08-04 13:24:21.483047", "failed": true, "rc": 125, "start": "2016-08-04 13:23:53.589713", "stderr": "Unable to find image 'seiryuz/hemelb-core:0.0.3' locally\n0.0.3: Pulling from seiryuz/hemelb-core\n6ffe5d2d6a97: Already exists\nf4e00f994fd4: Already exists\ne99f3d1fc87b: Already exists\na3ed95caeb02: Already exists\na3ed95caeb02: Already exists\nededd75b6753: Already exists\n1ddde157dd31: Already exists\na3ed95caeb02: Already exists\n1da8a785ceb1: Pulling fs layer\nfd988106d6b7: Pulling fs layer\n4d917b57da10: Pulling fs layer\n6b775e436e53: Pulling fs layer\n428a7a2e78f9: Pulling fs layer\n23c585241b49: Pulling fs layer\n66174d0664bd: Pulling fs layer\n980c4c680ba2: Pulling fs layer\na512b12d01ef: Pulling fs layer\n56f1dff757f1: Pulling fs layer\n852cdfb0fb39: Pulling fs layer\n54e0aaa9947d: Pulling fs layer\n5a08d2d14f8a: Pulling fs layer\n66174d0664bd: Waiting\n980c4c680ba2: Waiting\n6b775e436e53: Waiting\n23c585241b49: Waiting\n428a7a2e78f9: Waiting\n54e0aaa9947d: Waiting\na512b12d01ef: Waiting\n5a08d2d14f8a: Waiting\n56f1dff757f1: Waiting\n852cdfb0fb39: Waiting\n1da8a785ceb1: Verifying Checksum\n1da8a785ceb1: Download complete\n4d917b57da10: Verifying Checksum\n4d917b57da10: Download complete\n1da8a785ceb1: Pull complete\n428a7a2e78f9: Verifying Checksum\n428a7a2e78f9: Download complete\nfd988106d6b7: Verifying Checksum\nfd988106d6b7: Download complete\n23c585241b49: Download complete\n66174d0664bd: Verifying Checksum\n66174d0664bd: Download complete\n980c4c680ba2: Verifying Checksum\n980c4c680ba2: Download complete\na512b12d01ef: Verifying Checksum\na512b12d01ef: Download complete\n56f1dff757f1: Verifying Checksum\n56f1dff757f1: Download complete\n852cdfb0fb39: Verifying Checksum\n852cdfb0fb39: Download complete\n54e0aaa9947d: Verifying Checksum\n54e0aaa9947d: Download complete\n6b775e436e53: Verifying Checksum\n6b775e436e53: Download complete\n5a08d2d14f8a: Verifying Checksum\n5a08d2d14f8a: Download complete\nfd988106d6b7: Pull complete\n4d917b57da10: Pull complete\n6b775e436e53: Pull complete\n428a7a2e78f9: Pull complete\n23c585241b49: Pull complete\n66174d0664bd: Pull complete\n980c4c680ba2: Pull complete\na512b12d01ef: Pull complete\n56f1dff757f1: Pull complete\n852cdfb0fb39: Pull complete\n54e0aaa9947d: Pull complete\n5a08d2d14f8a: Pull complete\nDigest: sha256:558e420c5bab9fd2df96222285c4fab1e7550991b49c6684262c638e47433ff3\nStatus: Downloaded newer image for seiryuz/hemelb-core:0.0.3\ndocker: Error response from daemon: service endpoint with name loving_dubinsky already exists.", "stdout": "23967c733c7a157673d8b039bb22ed48d77bccfb5d2e615ff1b908284027b305", "stdout_lines": ["23967c733c7a157673d8b039bb22ed48d77bccfb5d2e615ff1b908284027b305"], "warnings": []}
changed: [172.31.34.9]
changed: [172.31.34.7]
changed: [172.31.34.8]

TASK [Get the container ip] ****************************************************
changed: [172.31.34.10]
changed: [172.31.34.9]
changed: [172.31.34.7]
changed: [172.31.34.8]

NO MORE HOSTS LEFT *************************************************************

PLAY [Run HemeLB job] **********************************************************

Stderr

 [WARNING]: Host file not found: /etc/ansible/hosts
 [WARNING]: provided hosts list is empty, only localhost is available
ERROR! invalid host (172.31.34.11) specified for playbook iteration

This caused EC2 not terminated automatically