Description of problem:
When using libvirt IPI as a platform for openshift, the machine-controller does not terminate connections to the libvirt URI, leading to libvirtd becoming unresponsive after enough simultaneous connections occur. Unresponsiveness is usually seen with about 5000 concurrent connections, which can occur in as little as an hour in a five node cluster.
Version-Release number of selected component (if applicable):
4.6 and earlier
Steps to Reproduce:
1. deploy openshift on libvirt (IPI)
2. netstat -tnaup | grep 16509 | grep ESTABLISHED | wc-l
Cluster deploys successfully, but the number of connections to the URI grows quickly.
Generally not more than 2-3 concurrent connections to the libvirt URI at a given time.
Fix submitted upstream.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (OpenShift Container Platform 4.6 GA Images), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.