I am reaching out to the community to see if anyone can help me resolve a problem in a small production VMware vSphere 5 Essentials Plus HA Cluster. Apparently our support has waned (news to me) and this version, while quietly working great for years, allows me to get no formal support. Doing my best here, I am not a vmware guru and am out of my element.
Today for some reason unknown, one of the three identical hosts in the HA Cluster has lost network connectivity (partially, read on). And has dropped out of control of the vSphere client. vSphere says it cannot connect to the host and the vmotion will no longer work, but there are three virtual machines on this host that appear to be running fine and chugging along doing production work.
I can ssh into the shell on each of these three identical hosts and ping out to other hosts on the management lan, but not the one in question. I am completely puzzled by this as to how I can ssh over the management network into the "unconnected" host but not ping out from the shell. I can do this on the two others just fine.
Any suggestions or help would be greatly appreciated. I am reluctant to do anything aggressive on the host as the real production from the VMs is working ok for now. Any ideas and suggestions appreciated.