JoyLau's Blog

JoyLau 的技术学习与思考

发表于 更新于 分类于
允许/禁止 master 节点运行 pod
  1. 查看 所有 node 节点的调度
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[root@node01 efk]# kubectl describe node|grep -E "Name:|Taints:"
Name:               k8s-master1
Taints:             node-role.kubernetes.io/master:NoSchedule
Name:               k8s-node1
Taints:             <none>
Name:               k8s-node2
Taints:             <none>

  1. 去除 k8s-master1 节点不允许配置的 label

kubectl taint node k8s-master1 node-role.kubernetes.io/master-

  1. 所有节点不允许调度的 label 去除

kubectl taint nodes --all node-role.kubernetes.io/master-

  1. 重新设置 master 节点不允许调度 pod

kubectl taint node k8s-master1 node-role.kubernetes.io/master=:NoSchedule

污点可选参数:

NoSchedule: 一定不能被调度
PreferNoSchedule: 尽量不要调度
NoExecute: 不仅不会调度, 还会驱逐Node上已有的Pod

发表于 更新于 分类于
CentOS 编译安装 busybox 简记

说明

最近在内网部署一些服务，原生的 CentOS mini 系统很多命令没有安装无法使用，手上又没有可用的源，于是想到使用 busybox 来解决问题

步骤

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yum install -y gcc gcc-c++ glibc glibc-devel pcre pcre-devel openssl openssl-devel systemd-devel zlib-devel libmcrypt-devel glibc-static ncurses-devel
cd tmp
mkdir busybox
cd busybox
wget https://busybox.net/downloads/busybox-1.34.0.tar.bz2
tar xvf busybox-1.34.0.tar.bz2
cd busybox-1.34.0/
make menuconfig 
## 按下面选择，把busybox编译成静态二进制、不用共享库
## Settings --> Build Options --> [*] Build BusyBox as a static binary (no shared libs)  按 Y 选中
make ## 编译成二进制文件 busybox
## make install ## 编译并安装，会污染系统目录
# 如果出错，执行make clean后，重新执行上面命令

可执行文件

下面是我编译好二进制文件，可直接下载使用
busybox

可使用命令如下：

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Currently defined functions:
        [, [[, acpid, add-shell, addgroup, adduser, adjtimex, arch, arp, arping, ascii, ash, awk, base32, base64, basename, bc, beep, blkdiscard, blkid, blockdev, bootchartd, brctl, bunzip2, bzcat, bzip2, cal,
        cat, chat, chattr, chgrp, chmod, chown, chpasswd, chpst, chroot, chrt, chvt, cksum, clear, cmp, comm, conspy, cp, cpio, crc32, crond, crontab, cryptpw, cttyhack, cut, date, dc, dd, deallocvt, delgroup,
        deluser, depmod, devmem, df, dhcprelay, diff, dirname, dmesg, dnsd, dnsdomainname, dos2unix, dpkg, dpkg-deb, du, dumpkmap, dumpleases, echo, ed, egrep, eject, env, envdir, envuidgid, ether-wake, expand,
        expr, factor, fakeidentd, fallocate, false, fatattr, fbset, fbsplash, fdflush, fdformat, fdisk, fgconsole, fgrep, find, findfs, flock, fold, free, freeramdisk, fsck, fsck.minix, fsfreeze, fstrim, fsync,
        ftpd, ftpget, ftpput, fuser, getopt, getty, grep, groups, gunzip, gzip, halt, hd, hdparm, head, hexdump, hexedit, hostid, hostname, httpd, hush, hwclock, i2cdetect, i2cdump, i2cget, i2cset, i2ctransfer,
        id, ifconfig, ifdown, ifenslave, ifplugd, ifup, inetd, init, insmod, install, ionice, iostat, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink, ipneigh, iproute, iprule, iptunnel, kbd_mode, kill, killall,
        killall5, klogd, last, less, link, linux32, linux64, linuxrc, ln, loadfont, loadkmap, logger, login, logname, logread, losetup, lpd, lpq, lpr, ls, lsattr, lsmod, lsof, lspci, lsscsi, lsusb, lzcat, lzma,
        lzop, makedevs, makemime, man, md5sum, mdev, mesg, microcom, mim, mkdir, mkdosfs, mke2fs, mkfifo, mkfs.ext2, mkfs.minix, mkfs.vfat, mknod, mkpasswd, mkswap, mktemp, modinfo, modprobe, more, mount,
        mountpoint, mpstat, mt, mv, nameif, nanddump, nandwrite, nbd-client, nc, netstat, nice, nl, nmeter, nohup, nologin, nproc, nsenter, nslookup, ntpd, od, openvt, partprobe, passwd, paste, patch, pgrep,
        pidof, ping, ping6, pipe_progress, pivot_root, pkill, pmap, popmaildir, poweroff, powertop, printenv, printf, ps, pscan, pstree, pwd, pwdx, raidautorun, rdate, rdev, readahead, readlink, readprofile,
        realpath, reboot, reformime, remove-shell, renice, reset, resize, resume, rev, rm, rmdir, rmmod, route, rpm, rpm2cpio, rtcwake, run-init, run-parts, runlevel, runsv, runsvdir, rx, script, scriptreplay,
        sed, sendmail, seq, setarch, setconsole, setfattr, setfont, setkeycodes, setlogcons, setpriv, setserial, setsid, setuidgid, sh, sha1sum, sha256sum, sha3sum, sha512sum, showkey, shred, shuf, slattach,
        sleep, smemcap, softlimit, sort, split, ssl_client, start-stop-daemon, stat, strings, stty, su, sulogin, sum, sv, svc, svlogd, svok, swapoff, swapon, switch_root, sync, sysctl, syslogd, tac, tail, tar,
        taskset, tc, tcpsvd, tee, telnet, telnetd, test, tftp, tftpd, time, timeout, top, touch, tr, traceroute, traceroute6, true, truncate, ts, tty, ttysize, tunctl, ubiattach, ubidetach, ubimkvol, ubirename,
        ubirmvol, ubirsvol, ubiupdatevol, udhcpc, udhcpc6, udhcpd, udpsvd, uevent, umount, uname, unexpand, uniq, unix2dos, unlink, unlzma, unshare, unxz, unzip, uptime, users, usleep, uudecode, uuencode,
        vconfig, vi, vlock, volname, w, wall, watch, watchdog, wc, wget, which, who, whoami, whois, xargs, xxd, xz, xzcat, yes, zcat, zcip

发表于 更新于 分类于
SpringBoot --- Jackson TypeReference 动态定义泛型类型

说明

jackson 中将 json 转为 Java 复杂对象一般会使用 new TypeReference<List>(){} 的匿名内部类来实现

这种方式有 2 个缺点

  1. 会不符合一些代码检测规范，比如 spotbugs， 会报出 SIC_INNER_SHOULD_BE_STATIC_ANON 的规范检查问题
  2. 无法动态的指定泛型类型

解决方式

使用 TypeFactory 类中的 constructParametricType 方法来解决泛型问题

使用示例

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public class TypeReferenceApiResult<T> extends TypeReference<ApiResult<T>> {

    protected final Type type;

    public TypeReferenceApiResult(Class<T> clazz) {
        type = new ObjectMapper().getTypeFactory().constructParametricType(ApiResult.class, clazz);
    }


    @Override
    public Type getType() {
        return type;
    }
}
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ApiResult<UserCreateResult> apiResult = new ObjectMapper()
    .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
    .readValue(response.getContentAsByteArray(),
    new TypeReferenceApiResult<>(UserCreateResult.class));

使用 TypeReferenceApiResult 对象会被反序列化为 ApiResult<T> 的泛型类型, 其中可以通过传入构造参数指定 T 的 class 类型

扩展

TypeFactory 内置了很多生成 JavaType 的方法，用于生成各类 JavaType 对象

  1. constructCollectionType
  2. constructMapLikeType
  3. constructParametricType
  4. …

详情可以使用 new ObjectMapper().getTypeFactory() 再查看其中的方法查看更多的 JavaType 类型

发表于 更新于 分类于
CentOS 时间同步服务器的搭建

安装

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yum install ntp

修改配置文件 /etc/ntp.conf

将配置文件里的

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server 0.centos.pool.ntp.org iburst
server 1.centos.pool.ntp.org iburst
server 2.centos.pool.ntp.org iburst
server 3.centos.pool.ntp.org iburst

全部注释掉， 换成本地时间服务器

server 127.127.1.0 iburst

测试

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systemctl enable ntpd
stsremctl start ntpd

有防火墙的需要打开 123 端口

使用

ntpq -p 查看同步结果

在其他服务器上使用

ntpdate -q ip 测试查看结果

输出如下结果则服务器正常

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[root@TEST dns]# ntpdate -q 192.168.1.182
server 192.168.1.182, stratum 6, offset -0.141762, delay 0.02614
30 Aug 15:57:00 ntpdate[25093]: adjust time server 192.168.1.182 offset -0.141762 sec

发表于 更新于 分类于
Docker 搭建 DNS 服务器并配置转发

启动脚本

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version: "3"
services:
  dns-server:
    image: sameersbn/bind:9.16.1-20200524
    container_name: dns-server
    restart: always
    volumes:
      - ./data:/data
    ports:
      - 53:53/udp
      - 53:53/tcp
      - 10000:10000
    environment:
      - ROOT_PASSWORD=Kaiyuan@2020
      - WEBMIN_INIT_SSL_ENABLED=false

配置

先将界面语言切换为中文

配置自定义域名

  1. 创建一个主区域
  2. 域名 / 网络 这一栏填写根域名
  3. 在 地址 记录里添加二级域名， 名称填写二级域名，地址填 IP 地址
  4. 点击右上角的刷新按钮应用配置

配置转发

  1. 点击 “转发和传输”, 添加一个上级的 DNS 服务器地址： 223.5.5.5
  2. 在配置运行查询的权限， 进入 “默认区域”， “默认的区域设置”， “允许查询自… ” 选择 “列出的 ”， 填入 “any”, 返回保存
  3. 使用 dig @dns-ip baidu.com 调试结果
  4. 如果还遇到问题，进入 “DNSSEC Verification” 将 “DNSSEC response validation enabled?” 和 “DNSSEC enabled?” 都选择 “否”， 返回保存即可

发表于 更新于 分类于
解决 CentOS 7 镜像中中文乱码的问题

解决

Dockerfile

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FROM centos:7
# 解决镜像中文乱码的问题
RUN yum install -y glibc-common kde-l10n-Chinese
RUN localedef -c -f UTF-8 -i zh_CN zh_CN.utf8
ENV LC_ALL zh_CN.UTF-8

发表于 更新于 分类于
黑苹果 Hackintosh 修复磁盘 NVMe 磁盘的错误问题

错误信息

macOS 的问题报告

系统登录后报错信息如下：

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panic(cpu 0 caller 0xffffff7f83e24231): nvme: "Fatal error occurred. CSTS=0x1 US[1]=0x0 US[0]=0xa6 VID=0x144d DID=0xa808
. FW Revision=EXA7301Q\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/IONVMeFamily/IONVMeFamily-470.100.17/IONVMeController.cpp:5320
Backtrace (CPU 0), Frame : Return Address
0xffffff8e0693b9e0 : 0xffffff800031868d mach_kernel : _handle_debugger_trap + 0x49d
0xffffff8e0693ba30 : 0xffffff8000452ab5 mach_kernel : _kdp_i386_trap + 0x155
0xffffff8e0693ba70 : 0xffffff800044463e mach_kernel : _kernel_trap + 0x4ee
0xffffff8e0693bac0 : 0xffffff80002bea40 mach_kernel : _return_from_trap + 0xe0
0xffffff8e0693bae0 : 0xffffff8000317d57 mach_kernel : _DebuggerTrapWithState + 0x17
0xffffff8e0693bbe0 : 0xffffff8000318147 mach_kernel : _panic_trap_to_debugger + 0x227
0xffffff8e0693bc30 : 0xffffff8000abf2bc mach_kernel : _panic + 0x54
0xffffff8e0693bca0 : 0xffffff7f83e24231 com.apple.iokit.IONVMeFamily : __ZN16IONVMeController8PolledIOEhP18IOMemoryDescriptorjyy18IOPolledCompletionjPKhm.cold.1
0xffffff8e0693bcc0 : 0xffffff7f83e0f362 com.apple.iokit.IONVMeFamily : __ZN16IONVMeController18RequestAsyncEventsEj
0xffffff8e0693be20 : 0xffffff8000a2fb29 mach_kernel : __ZN18IOTimerEventSource15timeoutSignaledEPvS0_ + 0x89
0xffffff8e0693be90 : 0xffffff8000a2fa49 mach_kernel : __ZN18IOTimerEventSource17timeoutAndReleaseEPvS0_ + 0x99
0xffffff8e0693bec0 : 0xffffff800035a645 mach_kernel : _thread_call_delayed_timer + 0xec5
0xffffff8e0693bf40 : 0xffffff800035a171 mach_kernel : _thread_call_delayed_timer + 0x9f1
0xffffff8e0693bfa0 : 0xffffff80002be13e mach_kernel : _call_continuation + 0x2e
      Kernel Extensions in backtrace:
         com.apple.iokit.IONVMeFamily(2.1)[2D554F70-092B-3B6B-B2AD-5C09EDB5B4F8]@0xffffff7f83e01000->0xffffff7f83e43fff
            dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[4159DFFE-7746-3327-9752-C161DC295828]@0xffffff7f813a4000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[2F37AE58-E6B9-3B18-9092-3B80D34C334B]@0xffffff7f80d31000
            dependency: com.apple.driver.AppleEFINVRAM(2.1)[10E46031-889C-3FB7-8B4B-0DECAB5AE325]@0xffffff7f81628000
            dependency: com.apple.iokit.IOStorageFamily(2.1)[CB3CB8CA-881A-37F3-A96B-8063CAF0476D]@0xffffff7f80f17000
            dependency: com.apple.iokit.IOReportFamily(47)[72B53B80-5713-30C1-BAD8-9D55FD718DA2]@0xffffff7f810d3000

BSD process name corresponding to current thread: kernel_task
Boot args: keepsyms=1 agdpmod=pikera shikigva=80

Mac OS version:
19H15

Kernel version:
Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT 2020; root:xnu-6153.141.2.2~1/RELEASE_X86_64
Kernel UUID: 9B5A7191-5B84-3990-8710-D9BD9273A8E5
__HIB  text base: 0xffffff8000100000
System model name: iMac19,1 (Mac-AA95B1DDAB278B95)
System shutdown begun: YES
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 81836972997
last loaded kext at 31787099012: >!AHIDKeyboard	209 (addr 0xffffff7f83d6e000, size 45056)
loaded kexts:
com.intel.driver.EnergyDriver	3.7.0
as.acidanthera.mieze.!IMausi	1.0.4
ru.joedm.SMCSuperIO	1.1.8
as.vit9696.SMCProcessor	1.1.8
as.vit9696.VirtualSMC	1.1.8
as.vit9696.WhateverGreen	1.4.4
as.vit9696.!AALC	1.5.4
as.vit9696.Lilu	1.4.9
>AudioAUUC	1.70
>!AUpstreamUserClient	3.6.8
>!AMCCSControl	1.14
@kext.AMDFramebuffer	3.1.0
>!AHDAHardwareConfigDriver	283.15
>!AHDA	283.15
@fileutil	20.036.15
@filesystems.autofs	3.0
>!APlatformEnabler	2.7.0d0
>AGPM	111.4.4
>X86PlatformShim	1.0.0
@kext.AMDRadeonX4000	3.1.0
@kext.AMDRadeonServiceManager	3.1.0
>!AGraphicsDevicePolicy	5.2.6
@AGDCPluginDisplayMetrics	5.2.6
>!A!IKBLGraphics	14.0.7
>!A!ICFLGraphicsFramebuffer	14.0.7
>!AFIVRDriver	4.1.0
@kext.AMD9500!C	3.1.0
>!A!IPCHPMC	2.0.1
>!AGFXHDA	100.1.429
>!AHV	1
|IOUserEthernet	1.0.1
|IO!BSerialManager	7.0.6f7
>pmtelemetry	1
@Dont_Steal_Mac_OS_X	7.0.0
>!A!ISlowAdaptiveClocking	4.0.0
>ACPI_SMC_PlatformPlugin	1.0.0
@private.KextAudit	1.0
|IO!BUSBDFU	7.0.6f7
>!AFileSystemDriver	3.0.1
>!AVirtIO	1.0
@filesystems.hfs.kext	522.100.5
@!AFSCompression.!AFSCompressionTypeDataless	1.0.0d1
@BootCache	40
@!AFSCompression.!AFSCompressionTypeZlib	1.0.0
@filesystems.apfs	1412.141.1
>AirPort.BrcmNIC	1400.1.1
>!AAHCIPort	341.140.1
>!ARTC	2.0
>!AACPIButtons	6.1
>!AHPET	1.8
>!ASMBIOS	2.1
>!AAPIC	1.7
$!AImage4	1
@nke.applicationfirewall	303
$TMSafetyNet	8
@!ASystemPolicy	2.0.0
|EndpointSecurity	1
>!AHIDKeyboard	209
>IO!BHIDDriver	7.0.6f7
>!ASMBus!C	1.0.18d1
|IOSMBus!F	1.1
>DspFuncLib	283.15
@kext.OSvKernDSPLib	529
@kext.triggers	1.0
@kext.AMDRadeonX4000HWLibs	1.0
@kext.AMDRadeonX4000HWServices	3.1.0
>!AGraphicsControl	5.2.6
>!AHDA!C	283.15
|IOHDA!F	283.15
>!ASMBusPCI	1.0.14d1
|IOAccelerator!F2	438.7.3
@kext.AMDSupport	3.1.0
|IONDRVSupport	576.1
|IOAVB!F	850.1
@!AGPUWrangler	5.2.6
@!AGraphicsDeviceControl	5.2.6
|IOGraphics!F	576.1
|IOSlowAdaptiveClocking!F	1.0.0
>IOPlatformPluginLegacy	1.0.0
>X86PlatformPlugin	1.0.0
>IOPlatformPlugin!F	6.0.0d8
@plugin.IOgPTPPlugin	840.3
|IOEthernetAVB!C	1.1.0
|IOAHCIBlock!S	316.100.5
|Broadcom!BHost!CUSBTransport	7.0.6f7
|IO!BHost!CUSBTransport	7.0.6f7
|IO!BHost!CTransport	7.0.6f7
|IO!B!F	7.0.6f7
|IO!BPacketLogger	7.0.6f7
>usb.IOUSBHostHIDDevice	1.2
>usb.cdc	5.0.0
>usb.networking	5.0.0
>usb.!UHostCompositeDevice	1.2
>usb.!UHub	1.2
>!UMergeNub	900.4.2
|IOAudio!F	300.2
@vecLib.kext	1.2.0
|IOSerial!F	11
|IOSurface	269.11
@filesystems.hfs.encodings.kext	1
>usb.!UHostPacketFilter	1.0
|IOUSB!F	900.4.2
>!AXsanScheme	3
|IO80211!F	1200.12.2b1
>mDNSOffloadUserClient	1.0.1b8
>corecapture	1.0.4
|IONVMe!F	2.1.0
>!AEFINVRAM	2.1
|IOSkywalk!F	1
|IOAHCI!F	290.0.1
>usb.!UXHCIPCI	1.2
>usb.!UXHCI	1.2
>!AEFIRuntime	2.1
|IOHID!F	2.0.0
$quarantine	4
$sandbox	300.0
@kext.!AMatch	1.0.0d1
>DiskImages	493.0.0
>!AFDEKeyStore	28.30
>!AEffaceable!S	1.0
>!ASSE	1.0
>!AKeyStore	2
>!UTDM	489.120.1
|IOSCSIBlockCommandsDevice	422.120.3
>!ACredentialManager	1.0
>KernelRelayHost	1
>!ASEPManager	1.0.1
>IOSlaveProcessor	1
|IOUSBMass!SDriver	157.140.1
|IOSCSIArchitectureModel!F	422.120.3
|IO!S!F	2.1
|IOUSBHost!F	1.2
>!UHostMergeProperties	1.2
>usb.!UCommon	1.0
>!ABusPower!C	1.0
|CoreAnalytics!F	1
>!AMobileFileIntegrity	1.0.5
@kext.CoreTrust	1
|IOTimeSync!F	840.3
|IONetworking!F	3.4
|IOReport!F	47
>!AACPIPlatform	6.1
>!ASMC	3.1.9
>watchdog	1
|IOPCI!F	2.9
|IOACPI!F	1.4
@kec.pthread	1
@kec.corecrypto	1.0
@kec.Libm	1



修复方法

见 GitHub: https://github.com/acidanthera/NVMeFix

macOS 10.15 及之前的版本可以安装在 /Library/Extensions 目录下
或者通用的方法是注入到启动器里

具体方法：

  1. 下载 NVMeFix.kext
  2. 拷贝至 /Volumes/EFI/EFI-backup/EFI/OC/Kexts 目录中
  3. 更新 config.plist 文件, 在 Kernel -> add 节点下添加如下内容：
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         <dict>
	<key>Arch</key>
	<string>x86_64</string>
	<key>BundlePath</key>
	<string>NVMeFix.kext</string>
	<key>Comment</key>
	<string>NVMeFix</string>
	<key>Enabled</key>
	<true/>
	<key>ExecutablePath</key>
	<string>Contents/MacOS/NVMeFix</string>
	<key>MaxKernel</key>
	<string></string>
	<key>MinKernel</key>
	<string>12.0.0</string>
	<key>PlistPath</key>
	<string>Contents/Info.plist</string>
</dict>

发表于 更新于 分类于
黑苹果 Hackintosh 解决系统关机变重启的问题

表现

系统关机偶尔会变成重启

解决

参考文章： https://dortania.github.io/OpenCore-Post-Install/usb/misc/shutdown.html
GitHub: https://github.com/dortania/OpenCore-Post-Install/blob/master/extra-files/FixShutdown-USB-SSDT.dsl
GitHub: https://github.com/dortania/OpenCore-Post-Install/blob/master/extra-files/FixShutdown-Patch.plist

需要工具：https://github.com/acidanthera/MaciASL/releases

解决思路

  1. 将 FixShutdown-USB-SSDT.dsl 文件使用 MaciASL 编译成 FixShutdown-USB-SSDT.aml 文件
  2. FixShutdown-USB-SSDT.aml 文件添加到 ACPI 中
  3. 打上补丁

FixShutdown-USB-SSDT.dsl：

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DefinitionBlock ("", "SSDT", 2, "Slav", "ZPTS", 0x00000000)
{
    External (_SB_.PCI0.XHC_.PMEE, FieldUnitObj)
    External (ZPTS, MethodObj)    // 1 Arguments

    Method (_PTS, 1, NotSerialized)  // _PTS: Prepare To Sleep
    {
        ZPTS (Arg0)
        If ((0x05 == Arg0))
        {
            \_SB.PCI0.XHC.PMEE = Zero
        }
    }
}

当 ZPTS 的 Arg0 被赋值为 0x05 时（S5 状态），让 SB.PCI0.XHC 这个设备变成 0

其中 SB.PCI0.XHC 是设备位置

将 FixShutdown-USB-SSDT.aml 文件拷贝到 /Volumes/EFI/EFI-backup/EFI/OC/ACPI

更新 config.plist 文件：

ACPI -> Add:

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<dict>
    <key>Comment</key>
    <string>Ensure USB is shutdown correctly</string>
    <key>Enabled</key>
    <true/>
    <key>Path</key>
    <string>FixShutdown-USB-SSDT.aml</string>
</dict>

ACPI -> Patch:

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<dict>
    <key>Comment</key>
    <string>_PTS to ZPTS</string>
    <key>Count</key>
    <integer>0</integer>
    <key>Enabled</key>
    <true/>
    <key>Find</key>
    <data>X1BUUw==</data>
    <key>Limit</key>
    <integer>0</integer>
    <key>Mask</key>
    <data></data>
    <key>OemTableId</key>
    <data>AAAAAA==</data>
    <key>Replace</key>
    <data>WlBUUw==</data>
    <key>ReplaceMask</key>
    <data></data>
    <key>Skip</key>
    <integer>0</integer>
    <key>TableLength</key>
    <integer>0</integer>
    <key>TableSignature</key>
    <data>AAAAAA==</data>
</dict>
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