After upgrading to FxM(Foglight Experience Monitor) 5.5.8 no longer seeing traffic metrics.
To the customer it looks like FxM is no longer getting any traffic.
A high number of agent restarts will be seen in the log /var/log/ecrit.
The following messages will appear in the ecrit log:
Feb 17 19:58:52 hostname agent: (3) Failed to load R1 key for server 10.22.22.180 443
Feb 17 19:58:54 hostname agent: (3) Failed to load R1 key for server 10.22.22.181 443
This is caused by a corrupt SSL key for the server in the above message.