Prometheus Client pip3 python3 설치

python 파일  (3-1example.py)

# cat 3-1-example.py

import http.server
from prometheus_client import start_http_server

class MyHandler(http.server.BaseHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.end_headers()
        self.wfile.write(b"Hello World")


# http 서버 서비스 포트는 8001
# prometheus matric 수집 포트는 8000
if __name__ == "__main__":
    start_http_server(8000)
    server = http.server.HTTPServer(('192.168.56.128', 8001), MyHandler)
    server.serve_forever()

 

# PIP3  설치 및 실행 (에러)

• pip3 및 prometheus_client 설치가 안되어 있다고 함

# python3 3-1-example.py
Traceback (most recent call last):
  File "/etc/prometheus/ep-examples-master/3/3-1-example.py", line 2, in <module>
    from prometheus_client import start_http_server
ModuleNotFoundError: No module named 'prometheus_client'

# pip3 --version
-bash: pip3: command not found

• pip3 및 prometheus_client 설치

# apt update

# apt install python3-pip
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  build-essential cpp cpp-11 dpkg-dev fakeroot g++ g++-11 gcc gcc-11 gcc-11-base javascript-common libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan6 libatomic1 libc-dev-bin libc-devtools libc6 libc6-dev libcc1-0 libcrypt-dev
  libdeflate0 libdpkg-perl libexpat1-dev libfakeroot libfile-fcntllock-perl libgcc-11-dev libgd3 libgomp1 libisl23 libitm1 libjbig0 libjpeg-turbo8 libjpeg8 libjs-jquery libjs-sphinxdoc libjs-underscore liblsan0 libmpc3 libnsl-dev libpython3-dev libpython3.10
  libpython3.10-dev libpython3.10-minimal libpython3.10-stdlib libquadmath0 libstdc++-11-dev libtiff5 libtirpc-dev libtsan0 libubsan1 libwebp7 libx11-6 libx11-data libxau6 libxcb1 libxdmcp6 libxpm4 linux-libc-dev lto-disabled-list make manpages-dev python3-dev
  python3-wheel python3.10 python3.10-dev python3.10-minimal rpcsvc-proto zlib1g-dev
..
..
..
..
  
  
# pip3 install prometheus_client
Collecting prometheus_client
  Downloading prometheus_client-0.20.0-py3-none-any.whl (54 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 54.5/54.5 KB 1.2 MB/s eta 0:00:00
Installing collected packages: prometheus_client
Successfully installed prometheus_client-0.20.0

# pip3 -V
pip 22.0.2 from /usr/lib/python3/dist-packages/pip (python 3.10)

 

# python 파일  실행 (3-1example.py)

# python3 3-1-example.py
192.168.56.1 - - [09/Mar/2024 09:05:08] "GET / HTTP/1.1" 200 -
192.168.56.1 - - [09/Mar/2024 09:05:08] "GET /favicon.ico HTTP/1.1" 200 -

# python3 3-1-example.py &

# netstat -ntpa |grep LISTEN
tcp        0      0 192.168.56.128:8001     0.0.0.0:*               LISTEN      3295/python3
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      3299/python3

# ps -ef |grep python3
root        3299    1387  0 09:21 pts/0    00:00:00 python3 3-1-example.py


# 3-1-example.py 중지 또는 kill

# kill -9 3299

 

# 동작 확인

 

# python3 3-1-example.py
192.168.56.1 - - [09/Mar/2024 09:05:08] "GET / HTTP/1.1" 200 -
192.168.56.1 - - [09/Mar/2024 09:05:08] "GET /favicon.ico HTTP/1.1" 200 -

 

 

# prometheus에 clinet 추가하기 

# pwd
/etc/prometheus

# ls
alertmanager  console_libraries  consoles  ep-examples-master  prometheus.yml  prometheus.yml.20240225

 

• prometheus.yml 파일에 등록 및 prometheus 재기동  (주의 : 8000번 포트로 등록)

# vi prometheus.yml

scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.

  - job_name: 'example'
    static_configs:
      - targets: ['192.168.56.128:8000']
      
# systemctl restart prometheus

# systemctl status prometheus
● prometheus.service - Prometheus
     Loaded: loaded (/etc/systemd/system/prometheus.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2024-03-09 09:34:02 KST; 7s ago
   Main PID: 3320 (prometheus)
      Tasks: 8 (limit: 2219)
     Memory: 63.8M
        CPU: 1.698s
     CGroup: /system.slice/prometheus.service
             └─3320 /usr/local/bin/prometheus --config.file /etc/prometheus/prometheus.yml --storage.tsdb.path />

 

• Prometheus -> Status -> Targets 에서 확인

• 192.168.56.128:8000/metrics 값 확인

• python_info 값 입력후 Execute 확인

python_info{implementation="CPython", instance="192.168.56.128:8000", job="example", major="3", minor="10", patchlevel="12", version="3.10.12"}

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