通过paramiko模块在远程主机上执行命令

安装paramiko模块

/usr/local/python36/bin/pip3 install paramiko

1、获取cpu使用率

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

#!/usr/bin/python #coding=utf8 #target: get the cpu's used of remote linux system   import paramiko   def getlinux(ssh):     # get the result of executing command     stdin, stdout, stderr = ssh.exec_command(r"sar 2 3|awk 'END{print (100-$NF)*100}'")     # judge if there is any error     err = stderr.readlines()     if len(err) > 0:         return err     else:         stdout_content = stdout.readlines()     result = stdout_content     if len(result) == 0:         print("there is something wrong when executing sar command")     else:         return round(float(result[0].strip()),2)   if __name__ == '__main__':     # create ssh object     ssh = paramiko.SSHClient()     # connect target host by ssh     ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())     ssh.connect(hostname="192.168.223.136",port=22,username="root",password="redhat")     # get the result of target host     result = getlinux(ssh)     # close ssh connection     ssh.close()     print(str(result)+"%s used")

2、获取内存使用率

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

#!/usr/bin/python #coding=utf8 #target: get the memory's used of linux system   import paramiko   def getlinux(ssh):     # executing command     stdin, stdout, stderr = ssh.exec_command(r"free -m|awk 'NR==2{print (($3 - $6 - $7)/$2)*100}'")     err = stderr.readlines()     if len(err) > 0:         return err     else:         stdout_content = stdout.readlines()     result = stdout_content     if len(result) == 0:         print("there is something wrong when executing free -m")     else:         return round(float(result[0].strip()),2)   if __name__ == '__main__':     # create ssh object     ssh = paramiko.SSHClient()     # connect target host by ssh     ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())     ssh.connect(hostname="192.168.223.136",port=22,username="root",password="redhat")     result = getlinux(ssh)     ssh.close()     print(str(result)+"% used")

 3、获取磁盘使用率：

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

#!/usr/bin/python #coding=utf8 #target: get the used of disk   import paramiko   def getlinux(ssh):     stdin, stdout, stderr = ssh.exec_command(r"df -h|awk 'NR > 1{if($1==$NF){print $1}else{print $0}}'")     err = stderr.readlines()     if len(err) > 0:         return err     else:         stdout_content = stdout.readlines()     result = stdout_content     if len(result) == 0:         print("there is something wrong when executing command")     else:         return result     if __name__ == '__main__':     ssh = paramiko.SSHClient()     ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())     ssh.connect(hostname="192.168.223.136",port=22,username="root",password="redhat")     result = getlinux(ssh)     ssh.close()     for i in result:         print("the used of %s has used %s" % (i.strip().split()[5],i.strip().split()[4]))