Checks system KPIs over HTTP listening on a UNIX domain socket
clone repository
https://github.com/jursonovicst/healthd.git
check python3
python3 --version
pip3 --version
install python dependencies
pip3 install -r requirements.txt
deploy as a unix service: copy heathd.service under /etc/systemd/system and start the service with systemct start healthd
The daemon can be accessed via HTTP over a unix domain socket:
http:///<path>?<kpi_name>=<kpi_limit>&<kpi_name>=<kpi_limit>...
The request <path> is ignored. The query string is parsed, and searched for the supported <kpi_name> and <kpi_limit>:
| kpi_name | Description | unit | expression |
|---|---|---|---|
| loadavg_1 | system load 1 minute average | - | kpi < limit |
| loadavg_1 | system load 5 minute average | - | kpi < limit |
| loadavg_15 | system load 15 minute average | - | kpi < limit |
| cpu_idle | CPU in IDLE state (over 1 second) | percent | kpi > limit |
| mem_free | free memory | byte | kpi > limit |
| iface, tx | interface name, interface transmit throughput | string, bps | kpi[iface] < limit |
KPI expressions evaluations are combined with AND relation. If the results is true, the --ok-string is returned. The individual KPIs can also be returned with the --return-kpis argument.
~ % curl -v --unix-socket /tmp/healthd.sock 'http:/test?loadavg_1=100'
* Trying /tmp/healthd.sock...
* Connected to test (/tmp/healthd.sock) port 80 (#0)
> GET /?loadavg_1=100 HTTP/1.1
> Host: test
> User-Agent: curl/7.64.1
> Accept: */*
>
* HTTP 1.0, assume close after body
< HTTP/1.0 200 OK
< Server: healthd/1.0
< Date: Mon, 23 Nov 2020 21:28:44 GMT
< Content-type: text/html
< Content-Length: 11
<
* Closing connection 0
webisonline%
~ % curl -v --unix-socket /tmp/healthd.sock 'http:/test?loadavg_1=0.6'
* Trying /tmp/healthd.sock...
* Connected to test (/tmp/healthd.sock) port 80 (#0)
> GET /?loadavg_1=0.6 HTTP/1.1
> Host: test
> User-Agent: curl/7.64.1
> Accept: */*
>
* HTTP 1.0, assume close after body
< HTTP/1.0 200 OK
< Server: healthd/1.0
< Date: Mon, 23 Nov 2020 21:28:33 GMT
< Content-type: text/html
< Content-Length: 8
<
* Closing connection 0
critical%
~ %
``` jursonovicst@Tamas-MacBook-Pro ~ % 
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