初始環(huán)境
系統(tǒng)： centos 7 （ x86_64 GNU/Linux）
docker版本 ：Docker version 20.10.11
1、初始化
- binfmt_misc 、QEMU依賴安裝
docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
- 驗(yàn)證qemu是否安裝成功
[root@VM-187-115-centos ~]# ls /proc/sys/fs/binfmt_misc/
kshcomp qemu-arm qemu-m68k qemu-mips64 qemu-mipsn32el qemu-ppc64le qemu-sh4 qemu-sparc64 status
qemu-aarch64 qemu-armeb qemu-microblaze qemu-mips64el qemu-or1k qemu-riscv32 qemu-sh4eb qemu-xtensa
qemu-aarch64_be qemu-hexagon qemu-microblazeel qemu-mipsel qemu-ppc qemu-riscv64 qemu-sparc qemu-xtensaeb
qemu-alpha qemu-hppa qemu-mips qemu-mipsn32 qemu-ppc64 qemu-s390x qemu-sparc32plus register
可以看到qemu支持的架構(gòu)有 arm、mips ，qemu-mips64el的狀態(tài)是 enabled
[root@VM-187-115-centos ~]# cat /proc/sys/fs/binfmt_misc/qemu-mips64el
enabled
interpreter /usr/bin/qemu-mips64el-static
flags: F
offset 0
magic 7f454c4602010100000000000000000002000800
mask ffffffffffffff00fffffffffffffffffeffffff
2、測(cè)試
1、 pull 一個(gè)mips64架構(gòu)的鏡像，驗(yàn)證是否可以運(yùn)行
2、uname -a查看容器的架構(gòu)類型
[root@VM-187-115-centos ~]# docker pull loongsongd/debian_mips64el_x64:v9
v9: Pulling from loongsongd/debian_mips64el_x64
46118084dfd4: Pull complete
Digest: sha256:1356718d3a359d66cfa2b4560d64f57eaa0f3b3963d918d5c0ee23674018134a
Status: Downloaded newer image for loongsongd/debian_mips64el_x64:v9
docker.io/loongsongd/debian_mips64el_x64:v9
[root@VM-187-115-centos ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
loongsongd/debian_mips64el_x64 v9 f807eae237d5 6 days ago 267MB
multiarch/qemu-user-static latest 871019ea8dda 3 months ago 299MB
[root@VM-187-115-centos ~]# docker run -it loongsongd/debian_mips64el_x64:v9 /bin/bash
root@620f1c5e8616:/# uname -a
Linux 620f1c5e8616 5.4.119-1-tlinux4-0008 #1 SMP Fri Nov 26 11:17:45 CST 2021 mips64 GNU/Linux
3、loongarch 架構(gòu)的支持
默認(rèn)qemu的配置中，是不支持 loongarch 架構(gòu)的， 所以如果鏡像的架構(gòu)是 loongarch 的話，那需要另外注冊(cè)。
1、下載 qemu-loongarch64-static，放到/usr/bin 目錄
[root@VM-187-115-centos /data/workspace]# wget https://gitee.com/michael0066/qemu-loongarch64-static/blob/master/qemu-loongarch64-static
2、 注冊(cè) loongarch
[root@VM-187-115-centos /data/workspace]# echo ":qemu-loongarch64:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02\x01:\xff\xff\xff\xff\xff\xfe\xfe\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-loongarch64-static:" > /proc/sys/fs/binfmt_misc/register
// 檢查是否注冊(cè)成功
[root@VM-187-115-centos /data/workspace]# ls /proc/sys/fs/binfmt_misc/ |grep loonqemu-loongarch64
qemu-loongarch64
3、 下載loongarch 鏡像，確認(rèn)是否可以運(yùn)行（uname -a 查看系統(tǒng)架構(gòu)）
# docker pull loongsongd/debian10_loongarch64_x64:e15.0
[root@VM-187-115-centos /data/workspace]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
loongsongd/debian_mips64el_x64 v9 f807eae237d5 6 days ago 267MB
mirrors.tencent.com/wwlocal4ubuntu/ubuntu_arm_compiler tag20220215 5fe79aae8948 2 weeks ago 3.67GB
loongsongd/debian10_loongarch64_x64 e15.0 6e04cd1bee86 2 months ago 2.91GB
multiarch/qemu-user-static latest 871019ea8dda 3 months ago 299MB
[root@VM-187-115-centos /data/workspace]# docker run -it loongsongd/debian10_loongarch64_x64:e15.0 /bin/bash
root@44adb0d84b94:/# uname -a
Linux 44adb0d84b94 5.16.0 #1 SMP Fri Nov 26 11:17:45 CST 2021 loongarch64 loongarch64 loongarch64 GNU/Linux
4、可能遇到的問(wèn)題
1、docker run 可能遇到的
WARNING: The requested image's platform (linux/arm64/v8)
does not match the detected host platform (linux/amd64) and no specific platform was requested
解決方案：
這只是1個(gè)警告，不影響容器的運(yùn)行。
可在鏡像系統(tǒng)目錄 /usr/bin 目錄中放入 qemu-aarch64-static 文件，需要放對(duì)應(yīng)架構(gòu)的qemu-****-static 文件。
2、docker pull 被限制
Error response from daemon: toomanyrequests: You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limit
解決方案：
登錄一個(gè)dockerhub賬號(hào)就就好了
docker login
然后按照提示輸入用戶名密碼。
3、通過(guò) tar 壓縮linux系統(tǒng)制作的鏡像，在跨平臺(tái)運(yùn)行的時(shí)候可能會(huì)提示各種錯(cuò)誤。
具體錯(cuò)誤可參考文章：
mips64 銀河麒麟V10 制作docker鏡像
參考文章
qemu-user-static
https://hub.docker.com/r/loongsongd/debian10_loongarch64_x64
