Onboarded 1477 devices. Problems began after one thousand of devices. In the beginning, there were small problems with authorization. Sometimes it was required to enter login and password twice or three times. With the increase in the number of devices, the problem manifested itself in the form of inability to connect the device to the server. Some time was helped by a reboot. A month ago, the server actually stopped working. I made changes to kernel configuration, nginx, postgresql and updated mongodb. Now the server works stably for about an hour, then problems with authorization begin, but it is possible to gain access after some time. Yesterday I tried to install a new version of cn Maestro. It stopped responding as soon as it attempted to connect more than a thousand deices. Operating system continues to respond to requests and if enabled ssh, it can connect without any problems.
Configuration of virtual machine:
VMware ESXI 6.0
HDD - high priority (Shares value - 2000, IOPs - Unlimited)
Hi nbctcp -- you can restart mongo by executing "sudo service mongod restart", but we would be interested to understand how the system got into the current state, and what happens when the GUI is unavailable (it doesn't run; you can't log in). Can you also let us know the version of cnMaestro; the number of devices managed; the types of devices; and the virtual hardware configuration.