Centos 7中的简单击剑/STONITH脚本

Question

我正在使用Centos 7安装一个简单的Cor心术/心脏起搏器/drbd高可用性集群，并希望使用自定义硬件(使用USB连接的电源开关)提供栅栏/STONITH。因此，我需要将这些设备作为STONITH资源添加到集群中。有一个简单的虚拟脚本我可以开始吗？我在/usr/sbin/fence_*中找到了几个文件，但这些文件似乎是通过某种网络连接的，并且只接受预先配置的选项。

Answer 1

下面是一个基于fence_cisco_ucs的最小脚本。我不知道为什么密码字段是强制性的，我也不知道get_list应该做什么。

例如，./script.py -o status -p x -s y给出了"Status: ON“。如果相应地修改了get_power_status和set_power_status中的功能，那么这个脚本可能实际上是有用的。

#!/usr/bin/python

import sys, re
sys.path.append("/usr/share/fence")
from fencing import *

def get_power_status(conn, options):
    someoption = options["--someoption"]

    #status = send_command(someoption)
    status = "on"

    return status

def set_power_status(conn, options):
    action = options["--action"]
    if action == "on":
        onoff = "1"
    else:
        onoff = "0"

    #send_command(onoff)

    return

def get_list(conn, options):
    outlets = { }

    return outlets

def define_new_opts():
    all_opt["someoption"] = {
        "getopt" : "s:",
        "longopt" : "someoption",
        "help" : "--someoption=[string]       Some option.",
        "required" : "1",
        "shortdesc" : "Some option.",
        "order" : 1 }

def main():
    device_opt = [ "passwd", "someoption" ]

    atexit.register(atexit_handler)

    define_new_opts()

    options = check_input(device_opt, process_input(device_opt))

    docs = { }
    docs["shortdesc"] = "Short Description"
    docs["longdesc"] = "Longer Description"
    docs["vendorurl"] = "http://somewhere"
    show_docs(options, docs)

    ## Do the delay of the fence device before logging in
    ## Delay is important for two-node clusters fencing but we do not need to delay 'status' operations
    if options["--action"] in ["off", "reboot"]:
        time.sleep(int(options["--delay"]))

    result = fence_action(None, options, set_power_status, get_power_status, get_list)

    sys.exit(result)

if __name__ == "__main__":
    main()