UPS电源下，自动关机，UPS电源,自动关机,停电后，在UPS电源下自

UPS电源下，自动关机，UPS电源,自动关机,停电后，在UPS电源下自

停电后，在UPS电源下自动关机

更新：有朋友说一个网络设备不可靠，增加一次ping多个网络设备，保障可靠性

hosts.list 格式：文本，每行一个ip地址

原理：ping一个未接入UPS电源的网络设备（路由网关），如果在设置的时间内ping不通，视为停电了

以下环境均测试过（window2003_64, MacOS10.7.4, ubuntu12.04_64,EXSi5.1)

用法:

sudo python ups_check.py once 192.168.1.1 30(需要配合crond)

sudo python ups_check.py forever 192.168.1.1 60(需要加入启动项)

sudo python ups_check.py once_multi hosts.list 30( 需要配合crond, 一次ping多个ip地址)

sudo python ups_check.py forever_multi hosts.list 60( 需要加入启动项, 一次ping多个ip地址 )

bash版本

import Queue, threading, subprocessimport re;import sys;import os;import struct;ping_cmd = "ping";ping_host = "192.168.2.1";ping_waittime = "-W 1";ping_count_flag = "-c";ping_result = "packets transmitted, (\\d+) .+"halt_cmd = "halt";def check_windows_and_python():    ok = -1;    isX64 = 'PROGRAMFILES(X86)' in os.environ    bits = struct.calcsize("P")*8;    if isX64 == True and bits == 64:        ok = 0;    elif isX64 == False and bits == 32:        ok = 0;    if ok < 0:        print("require", bits, "bits python for this system");    return ok;def check_platform() :    ret = -1;    osinfo = sys.platform;    if osinfo.find("win32") != -1:#windows platform        ret = check_windows_and_python();        if ret >= 0:            global ping_waittime;            global ping_count_flag;            global ping_result;            global halt_cmd;            ping_waittime = "-w 1000";            ping_count_flag = "-n";            ping_result = "Received = (\\d+), Lost =";            halt_cmd = "shutdown -f -s -t 60"            ret = 1;    elif osinfo.find("darwin") != -1:#Mac OS X        ret = 2;    elif osinfo.find("linux2") != -1:#ubuntu EXSi        ret = 3;    if ret == -1:        print("Unknown Platform: ", osinfo);    return ret;def load_host_list(host_file):    f = open(host_file);    host_list = f.readlines();    return host_list;def ping_host_count(osinfo, host, c):    ret = -1;    ping_count = ' '.join([ping_count_flag, c]);    if (osinfo == 1):#windows        cmd_line = ' '.join([ping_cmd, ping_waittime, ping_count, host]);        sub = subprocess.Popen(cmd_line, stdout=subprocess.PIPE);    else:#other os system        sub = subprocess.Popen([ping_cmd, ping_waittime, ping_count, host], stdout=subprocess.PIPE);    output = sub.stdout.read().decode('utf-8');    grep = re.search(ping_result, output);      sed = re.search("\\d+", grep.group());    ret = sed.group(0);    missed = int(c) - int(ret);    return missed;def ping_host_count_with_queue(osinfo, host, c, que):    missed = 0;    try: missed = ping_host_count(osinfo, host, str(c));    finally: que.put( (host, missed));#ping-multi hosts, return min(missed_in_hosts)def ping_multi_hosts(osinfo, hosts, c):    min_missed = c;    threads_count = len(hosts);    que = Queue.Queue();    for host in hosts:        ping_thread = threading.Thread(target = ping_host_count_with_queue, args = (osinfo, host, c, que, ))        ping_thread.start();    while threads_count > 0:        host, missed = que.get();        #print(host, missed);        threads_count = threads_count - 1;        if (min_missed > missed):            min_missed = missed;    return min_missed;#ping host oncedef ping_host_once(osinfo, host, time_out):    missed = ping_host_count(osinfo, host, time_out);    print("missed: ", missed);    if(missed == int(time_out)):        print("SYSTEM WILL HALT!!!");        subprocess.call(halt_cmd);    return missed;#ping host foreverdef ping_host_forever(osinfo, host, time_out):    ret = -1;    total_missed = 0;    count = 3;    while True:        missed = ping_host_count(osinfo, host, str(count));        if (missed == count):              total_missed = total_missed + missed;        else:            total_missed = 0;        if (total_missed >= int(time_out)):            print("SYSTEM WILL HALT!!!");            subprocess.call(halt_cmd);            ret = 0;            break;    return ret;#ping multi-hosts once    def ping_multi_hosts_once(osinfo, host_file, time_out):    ret = -1;    host_list = load_host_list(host_file);    min_missed = ping_multi_hosts(osinfo, host_list, int(time_out));    if(min_missed == int(time_out)):        print("ping_multi_hosts timeout, SYSTEM WILL HALT!!!");        subprocess.call(halt_cmd);        ret = 0;    return ret;#ping multi-hosts forever    def ping_multi_host_forever(osinfo, host_file, time_out):    ret = -1;    total_missed = 0;    count = 3;    host_list = load_host_list(host_file);    while True:        missed = ping_multi_hosts(osinfo, host_list, int(count));        if (missed == count):              total_missed = total_missed + missed;        else:            total_missed = 0;        if (total_missed >= int(time_out)):            print("SYSTEM WILL HALT!!!");            subprocess.call(halt_cmd);            ret = 0;            break;    return ret;def usage():    print("usage: sudo python hello.py [once|forever] 192.168.2.1 60");    print("usage: sudo python hello.py [once_multi|forever_multi] hosts.list 60");    print("host.list format: one ip / line");if __name__ == "__main__":    if (len(sys.argv) >= 4):        action = sys.argv[1];        host = sys.argv[2];        time_out = sys.argv[3];        ret = check_platform();        print("check_platform: ", ret);        if (action == "once" and ret >= 0):            ping_host_once(ret, host, time_out);        elif (action == "forever" and ret >= 0):            ping_host_forever(ret, host, time_out);        elif (action == "once_multi" and ret >= 0):            ping_multi_hosts_once(ret, host, time_out);        elif (action == "forever_multi" and ret >= 0):            ping_multi_host_forever(ret, host, time_out);        else:            usage();    else:              usage();#该片段来自于http://byrx.net