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Bug
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Resolution: Cannot Reproduce
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Major
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None
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EC2 Slave info:
Linux ip-10-0-1-227 4.4.0-109-generic #132-Ubuntu SMP Tue Jan 9 19:52:39 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Jenkins version: 2.89.2
Jenkins EC2-plugin: 1.38
SSH slaves version: 1.22
Somehow every once in a week (at random!) Jenkins marks a properly launched EC2 instance as offline whilst it is actually online because after clicking 'Bring this node back online' it immediately works.
In case this happens Jenkins is not able to run on these instance types (e.g t2-small) and it does not launch any additional jobs either blocking the whole run.
Somehow the launch logs (attached) show nothing wrong at all.