Python运维——系统模块

psutil模块

psutil 是一个跨平台的库，提供了查看系统各项参数的接口。
常用方法：

方法	解释
cpu-count()	cpu逻辑个数
cpu_count(logical=False)
cpu_percent()	CPU的使用率
virtual_memory()	内存完整信息
disk_partitions()	磁盘完整信息
user()	用户登录信息

Windows环境下

In [1]: import psutil

In [2]: psutil.cpu_count()
Out[2]: 4

In [3]: psutil.cpu_count(logical=False)
Out[3]: 2

In [4]: psutil.cpu_percent()
Out[4]: 5.7

In [5]: psutil.virtual_memory()
Out[5]: svmem(total=4205264896, available=1154924544, percent=72.5, used=3050340352, free=1154924544)

In [6]: psutil.disk_partitions()
Out[6]:
[sdiskpart(device='C:\\', mountpoint='C:\\', fstype='NTFS', opts='rw,fixed'),
 sdiskpart(device='D:\\', mountpoint='D:\\', fstype='NTFS', opts='rw,fixed'),
 sdiskpart(device='E:\\', mountpoint='E:\\', fstype='NTFS', opts='rw,fixed'),
 sdiskpart(device='F:\\', mountpoint='F:\\', fstype='NTFS', opts='rw,fixed'),
 sdiskpart(device='G:\\', mountpoint='G:\\', fstype='NTFS', opts='rw,fixed')]

In [7]: psutil.users()
Out[7]: [suser(name='Administrator', terminal=None, host='0.4.0.0', started=2471218119.0, pid=None)]

Linux环境下

In [1]: import psutil

In [2]: psutil.cpu_count()
Out[2]: 1

In [3]: psutil.cpu_count(logical=False)
Out[3]: 1

In [4]: psutil.cpu_percent()
Out[4]: 1.2

In [5]: psutil.virtual_memory()
Out[5]: svmem(total=1966563328, available=1713328128, percent=12.9, used=120455168, free=1523695616, active=164339712, inactive=198082560, buffers=45314048, cached=277098496, shared=167936, slab=54685696)

In [6]: psutil.disk_partitions()
Out[6]: [sdiskpart(device='/dev/xvda1', mountpoint='/', fstype='ext4', opts='rw')]

In [7]: psutil.users()
Out[7]: [suser(name='root', terminal='pts/0', host='218.26.55.15', started=1524530688.0, pid=9479)]