Python Script monitoring Docker container

Scripting Features:

1. Monitor CPU Usage

2. Monitor Memory usage

3. Monitor network traffic

#!/usr/bin/env  python# --*-- coding:utf-8 --*--import  sysimport   tabimport  reimport  osimport  timefrom docker  import  clientimport  commandskeys_container_stats_list = [' blkio_stats ',  ' precpu_stats ',  ' network ',  ' read ',  ' memory_stats ',  ' cpu_stats ']merit_list=[' usage ', ' limit ', ' mem_use_ Percent ', ' total_cpu_usage ', ' system_cpu_usage ', ' cpu_usage_percent ', ' rx_bytes ', ' tx_bytes ']returnval =  Nonedef start (Container_name):    global container_stats     Conn=client (base_url= ' Unix://run/docker.sock ', version= ' 1.19 ')     generator=conn.stats ( Container_name)     try:        container_stats= Eval (Generator.next ())     except NameError,error_msg:         pass#        print error_msg         Container_stats=eval (Generator.next ())     finally:         conn.close () Def monitor_docker (monitor_item,merit):     if merit  ==  ' mem_use_percent ':         start (container_name)          mem_usage = container_stats[' memory_stats ' [' Usage ']         mem_limit = container_stats[' memory_stats ' [' Limit ']         returnval = round (float (mem_usage)  / float (mem_ Limit), 2)         print  returnval     elif merit ==  ' system_cpu_usage ':         start ( Container_name)    &NBsp;    first_result = container_stats[' cpu_stats ' [' System_cpu_usage ']         start (Container_name)          second_result = container_stats[' cpu_stats ' [' System_cpu_usage ']         returnval = second_result - first_result         print  returnval    elif merit ==  ' Total_cpu_ Usage ':         start (container_name)          first_result = container_stats[' cpu_stats ' [' cpu_usage '] [' total_usage ']         start (Container_name)          second_result = container_stats[' cpu_stats ' [' cpu_usage '] [' total_usage ']         returnval = second_result - first_result        print  returnval    elif merit ==  ' Cpu_usage_percent ':         start (Container_name)         system_use= container_stats[' cpu_stats ' [' System_cpu_usage ']        total_use= container_stats[' cpu_stats ' [' cpu_usage '] [' total_usage ']        cpu_ Count=len (container_stats[' cpu_stats ' [' cpu_usage '] [' percpu_usage '])          returnval = round ((Float (total_use)/float (system_use)) *cpu_count*100.0,2)          print returnval    elif merit ==  ' Rx_ Bytes ':         command= ' docker  exec -it   api1  ifconfig eth1 | grep  "bytes"   | awk  ' {print $2} '  | awk -F  ': '   ' {print $2} '   '         result_one =  Commands.getoutput (command)         time.sleep (1)          command= ' Docker  exec -it  api1  ifconfig  eth1 | grep  "bytes"   | awk  ' {print $2} '  | awk -f   ': '   ' {print $2} '   '         result_second =  commands.getoutput (command)         returnval = round ( Int (Result_second)   -  int (result_one))/1024,2)          print returnval    elif merit ==  ' Tx_bytes ':         cOmmand= ' docker  exec -it  api1  ifconfig eth1 | grep  "bytes"   | awk  ' {print $6} '  | awk -F  ': '   ' {print $2} '   '         result_one = commands.getoutput (command)         time.sleep (1)          Command= ' Docker  exec -it  api1  ifconfig eth1 | grep   "bytes"   | awk  ' {print $6} '  | awk -F  ': '   ' {print  $ '   '         result_second = commands.getoutput ( command)         returnval = round ((int (result_second)    -  int (Result_one))/1024,2)         print  returnvalif __name__ ==  ' __main__ ':     command= ' docker ps | awk  ' {print  $NF} ' | grep  -v  "NAMES"     str=commands.getoutput (command)      Container_counts_list=str.split (' \ n ')     if sys.argv[1] not in  container_counts_list:        print container_counts_list         print  "The container name you entered is wrong, please re-execute the script and enter the correct container name above."         sys.exit (1)     else:         container_name = sys.argv[1]         if sys.argv[2] not in keys_container_stats_list:             print keys_container_stats_list             print  ' YouThe input container monitoring item is not in the monitoring range, please re-execute the script and enter the correct monitoring item above. '             sys.exit (1)          else:            monitor_ item = sys.argv[2]            if  sys.argv[3] not in merit_list:                 print merit_list                 print  "The detail of the container monitoring details you entered is not in the range of monitoring, please re-execute the script and enter the correct detailed monitoring metrics."             else:                 merit = sys.argv[3]                 monitor_docker (monitor_ ItemMerit 

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Python Script monitoring Docker container