I had elastic agent / end point installed on about 10 computers, they were working for pass months, I just noted today that all pcs are showing offline status, and I check logs, all show following error:
[elastic_agent][error] Could not communicate with fleet-server Checking API will retry, error: fail to checkin to fleet-server: Post "http://192.168.0.46:8220/api/fleet/agents/b449511d-27ff-4644-b2a2-bea4104574cf/checkin?": dial tcp 192.168.0.46:8220: connectex: No connection could be made because the target machine actively refused it.
wondering someone could offer me some troubleshooting idea. I did not change anything at my elastic server (I am using single node), no sure where to start.
thanks in advance.