Pythonサーバモニタ

Pythonサーバモニタ

一、paramikoとpsutil

をインストールする

二、遠隔監視を実現する

三、問題CryptographyDepresationWarning

一、paramikoとpsuilのインストール

pip install paramiko
pip install psutil

二、遠隔監視を実現する

モニタ入口run_perf.py

import os
from utils import *


def run_perf(host, port, user, password):
    """
        ，    
    """"
    base = os.getcwd()
    cmd_file = base + r'/script.txt'
    client = connect_to_server(host, port, user, password)
    with open(cmd_file) as fp:
        cmd = fp.read()
        exec_script(client, cmd)
    close_connection(client)

if __name__ == '__main__':
    run_perf('10.2.2.100', 22, 'root', 'password')

リモート接続utils.py

import json
import paramiko
import psutil


def connect_to_server(host, port, user, password):
    """
    SSH      
    """"
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    client.connect(host, port, user, password)
    return client


def exec_script(client, script):
    """
        
    """"
    stdin, stdout, stderr = client.exec_command(script)
    for line in stdout.readlnes():
        data = json.loads(line)
        print(data)


def close_connection(client):
    """
         
    """"
    client.clsoe()

モニタスクリプトscript.py

python <<EOF
import json
import psutil as pu


data = ()
mem_info = {}
mem = pu.virtual_memory()
mem_info['total'] = mem.total
mem_info['available'] = mem.available
mem_info['percent'] = mem.percent
mem_info['used'] = mem.used
mem_info['free'] = mem.free
cpu_info = pu.cpu_percent(interval=2, percpu=True)

data['mem_info'] = mem_info
data['cpu_info '] = cpu_info
data = json.dumps(data)
print(data)
EOF

三、問題CryptographyDepresationWarning

原因:paramikoはcryptographyに依存し、最新のcryptographyには廃棄されたAPIがある.

解放方案uninstall最新版、インストール2.4.2 pip uninstall cryptography pip install cryptography=2.4.2

PS:リファレンスリンクhttps://psutil.readthedocs.io/en/latest/