Re: [ovirt-users] Debugging why hosted engine flips between EngineUp and EngineBadHealth

Hi all, since some days my hosted-engine environments (one RHEV 4.0.7, one ovirt 4.1.7) continue to send mails about changes between EngineUp and EngineBadHealth. This is pretty annoying and i'm not able to find out the root cause. The only issue i've seen on hosts is this error appearing sometimes randomly about sending mails. Thread-1::ERROR::2017-12-01 03:05:05,084::notifications::39::ovirt_hosted_engine_ha.broker.notifi cations.Notifications::(send_email) [Errno -2] Name or service not known Traceback (most recent call last):   File "/usr/lib/python2.7/site- packages/ovirt_hosted_engine_ha/broker/notifications.py", line 26, in send_email     timeout=float(cfg["smtp-timeout"]))   File "/usr/lib64/python2.7/smtplib.py", line 255, in __init__     (code, msg) = self.connect(host, port)   File "/usr/lib64/python2.7/smtplib.py", line 315, in connect     self.sock = self._get_socket(host, port, self.timeout)   File "/usr/lib64/python2.7/smtplib.py", line 290, in _get_socket     return socket.create_connection((host, port), timeout)   File "/usr/lib64/python2.7/socket.py", line 553, in create_connection     for res in getaddrinfo(host, port, 0, SOCK_STREAM): gaierror: [Errno -2] Name or service not known Thread-6::WARNING::2017-12-01 03:05:05,427::engine_health::130::engine_health.CpuLoadNoEngine::(act ion) bad health status: Hosted Engine is not up! There are no errors on engine logs and all the api queries done by ovirt-hosted-engine-ha returns HTTP code 200. I suspect the switch between EngineUP and EngineBadHealth status could be due to some dns resolution issues, but there is no clear message on the log showing this and this doesn't help our netadmins to make some traces. Is there a way to increase the verbosity of broker.log and agent.log? Luca