监控系统自监控怎么做？

[[instances]]
urls = [
    "http://localhost:17000/metrics"
]

[[instances]]
targets = [
#     "127.0.0.1:22",
#     "localhost:6379",
#     ":9090"
]

## Set timeout (default 5 seconds)
# timeout = "5s"

## Set read timeout (only used if expecting a response)
# read_timeout = "5s"

# # Concurrent requests to make per instance
# concurrency = 10

# # gather interval
# interval = "30s"

# # Optional append labels
# labels = { env="production", team="devops" }

## Protocol, must be "tcp" or "udp"
## NOTE: because the "udp" protocol does not respond to requests, it requires
## a send/expect string pair (see below).
# protocol = "tcp"

## The following options are required for UDP checks. For TCP, they are
## optional. The plugin will send the given string to the server and then
## expect to receive the given 'expect' string back.
## string sent to the server
# send = "ssh"
## expected string in answer
# expect = "ssh"

[instances.alerting]
## Enable alerting or not
enabled = true
## Same functionality as Prometheus keyword 'for'
for_duration = 0
## Minimum interval duration between notifications
repeat_interval = "5m"
## Maximum number of notifications
repeat_number = 3
## Whether notify recovery event
recovery_notification = true
## Choice: Critical, Warning, Info
default_severity = "Warning"

[[instances]]
# # executable name (ie, pgrep <search_exec_substring>)
# search_exec_substring = ""

# # pattern as argument for pgrep (ie, pgrep -f <search_cmdline_substring>)
search_cmdline_substring = ""

# # windows service name
# search_win_service = ""

alert_if_num_lt = 1
check = "进程存活检测(进程数量检测)"
interval = "30s"

[instances.alerting]
## Enable alerting or not
enabled = true
## Same functionality as Prometheus keyword 'for'
for_duration = 0
## Minimum interval duration between notifications
repeat_interval = "5m"
## Maximum number of notifications
repeat_number = 3
## Whether notify recovery event
recovery_notification = true
## Choice: Critical, Warning, Info
default_severity = "Warning"