btzq opened a new issue, #9582:
URL: https://github.com/apache/cloudstack/issues/9582
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##### ISSUE TYPE
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* Bug Report
##### COMPONENT NAME
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Categorize the issue, e.g. API, VR, VPN, UI, etc.
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Virtual Router
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##### CLOUDSTACK VERSION
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branch.
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4.19.1.1
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##### CONFIGURATION
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advanced networking, etc. N/A otherwise
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##### OS / ENVIRONMENT
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##### SUMMARY
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The Default Setting for VR Load Balancer is where:
- Timeout Client = 50 Seconds
- Timeout Server = 50 Seconds
We have a use case where lots of our customers have very long lived TCP
Connections. So we went into the VR, and made the following changes:
- Timeout Client = 50 Seconds -> 30 Minutes
- Timeout Server = 50 Seconds -> 30 Minutes
- Added TCP Keep Alive (Option tcpka)
After that, we tried accessing services using Autoscale Group Load Balancer.
It working for 3-5 Minutes and then we were suddenly we got cut off. We couldnt
PING or Telnet the VMs under Autoscale anymore.
We checked and saw VR started throwing HealthCheck issues where: 'Missing
Load Balancer For XXXXXX'
To resolve the issue temporarily, we added a new LB Rule and removed it, to
force HA Proxy to get the new info.
##### STEPS TO REPRODUCE
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Refer Above
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##### EXPECTED RESULTS
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To be able to change the TCP Timeout Setting without any issue.
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##### ACTUAL RESULTS
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Get Healthcheck fails. And suddenly services didnt work.
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