/prometheus/
to your Package Security Manager fully qualified domain name (FQDN). For example: https://<FQDN>.com/prometheus/
up
time metric tells you if your instance is running.
process_open_fds
metric counts the number of files in the /proc/PID/fd
directory.
This tells you how many regular files, sockets, pseudo terminals, and other processes you currently have open.
process_max_fds
metric reads /proc/<PID>/limits
and uses the Soft Limit from the Max Open Files row.
/limits
lists both soft and hard limits. The soft limit is the value the kernel enforces for the corresponding resource, while the hard limit acts as the ceiling for the soft limit.process_open_fds
and process_max_fds
, you can write an alert to warn you when a process hits 80% of the limit: