run
代码语言：javascript复制先把流程跑通一遍。
⚡ root@localhost ~/kubevirtci/cluster-provision/centos8 main bash build.sh
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
STEP 1/15: FROM quay.io/fedora/fedora@sha256:38813cf0913241b7f13c7057e122f7c3cfa2e7c427dca3194f933d94612e280b
Trying to pull quay.io/fedora/fedora@sha256:38813cf0913241b7f13c7057e122f7c3cfa2e7c427dca3194f933d94612e280b...
Getting image source signatures
Copying blob 75f075168a24 skipped: already exists
Copying config 3a66698e60 done Writing manifest to image destination
Storing signatures
STEP 2/15: ARG centos_version
--> fe04ebe1f9a
STEP 3/15: RUN dnf -y install jq iptables iproute dnsmasq qemu openssh-clients screen && dnf clean all
Fedora 36 - x86_64 1.5 MB/s | 81 MB 00:53
Fedora 36 openh264 (From Cisco) - x86_64 768 B/s | 2.5 kB 00:03
Fedora Modular 36 - x86_64 1.5 MB/s | 2.4 MB 00:01
Fedora 36 - x86_64 - Updates 529 kB/s | 21 MB 00:41
Fedora Modular 36 - x86_64 - Updates 1.1 MB/s | 2.2 MB 00:02
Dependencies resolved.=================================================================================================
Package Arch Version Repo Size=================================================================================================Installing:
dnsmasq x86_64 2.86-9.fc36 updates 340 k
iproute x86_64 5.15.0-2.fc36 fedora 737 k
iptables-legacy x86_64 1.8.7-15.fc36 fedora 54 k ...
xml-common-0.6.3-58.fc36.noarch
xz-5.2.5-9.fc36.x86_64
yajl-2.1.0-18.fc36.x86_64
Complete!42 files removed
--> 7a2a4e445bf
STEP 4/15: WORKDIR /
--> e3ef42c12ce
STEP 5/15: COPY vagrant.key /vagrant.key
--> 71ba916b3c3
STEP 6/15: RUN chmod 700 vagrant.key
--> 6cf4918c4dd
STEP 7/15: ENV DOCKERIZE_VERSION v0.6.1
--> 9447d1863a0
STEP 8/15: RUN curl -LO https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && tar -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && chmod u x dockerize && mv dockerize /usr/local/bin/
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0100 2935k 100 2935k 0 0 1681k 0 0:00:01 0:00:01 --:--:-- 3433k
dockerize
--> 2b3bf8a0844
STEP 9/15: COPY scripts/download_box.sh /
--> ba45bf5ddca
STEP 10/15: RUN echo "Centos8 version $centos_version"Centos8 version 20210210.0--> 1784a1e7905
STEP 11/15: ENV CENTOS_URL https://cloud.centos.org/centos/8-stream/x86_64/images/CentOS-Stream-Vagrant-8-$centos_version.x86_64.vagrant-libvirt.box
--> 4d559bfbd15
STEP 12/15: RUN /download_box.sh ${CENTOS_URL}
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed 0 902M 0 240k 0 0 36703 0 7:09:45 0:00:06 7:09:39 49329box.img100 902M 100 902M 0 0 9.9M 0 0:01:30 0:01:30 --:--:-- 11.0M
--> 6a7046328a5
STEP 13/15: RUN curl -L -o /initrd.img http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/images/pxeboot/initrd.img
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed100 79.9M 100 79.9M 0 0 3508k 0 0:00:23 0:00:23 --:--:-- 4018k
--> 811f191d51f
STEP 14/15: RUN curl -L -o /vmlinuz http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/images/pxeboot/vmlinuz
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed100 10.0M 100 10.0M 0 0 5736k 0 0:00:01 0:00:01 --:--:-- 5740k
--> 3e9faad2966
STEP 15/15: COPY scripts/* /
COMMIT quay.io/kubevirtci/centos8
--> 05e579533e2
Successfully tagged quay.io/kubevirtci/centos8:latest
05e579533e2e04e16ba73d3bf556f48063c1604ea6fa084c8872522559ecbe41
⚡ root@localhost ~/kubevirtci/cluster-provision/centos8 main 本地生成了3.65G的 CentOS Stream 8镜像。
代码语言：javascript复制 ⚡ root@localhost ~/kubevirtci/cluster-provision/centos8 main docker images
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
REPOSITORY TAG IMAGE ID CREATED SIZE
quay.io/kubevirtci/centos8 latest 05e579533e2e 11 minutes ago 3.65 GBscript
build.sh
代码语言：javascript复制#!/bin/bash -eDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
centos_version="$(cat $DIR/version | tr -d 'n')"docker build --build-arg centos_version=$centos_version . -t quay.io/kubevirtci/centos8language-bash复制代码( cd "{BASH_SOURCE[0]}" )" && pwd )获取当前脚本的绝对路径给变量DIR，dirname "
cat $DIR/version | tr -d 'n'将version文件的内容去掉换行符，复制给变量centos_version，变量centos_version在后边的Dockerfile有用到。执行完docker build本地镜像为quay.io/kubevirtci/centos8
version
代码语言：javascript复制20210210.0Dockerfile
代码语言：javascript复制FROM quay.io/fedora/fedora@sha256:38813cf0913241b7f13c7057e122f7c3cfa2e7c427dca3194f933d94612e280b
ARG centos_version
RUN dnf -y install jq iptables iproute dnsmasq qemu openssh-clients screen && dnf clean all
WORKDIR /
COPY vagrant.key /vagrant.key
RUN chmod 700 vagrant.key
ENV DOCKERIZE_VERSION v0.6.1
RUN curl -LO https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
&& tar -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
&& rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
&& chmod u x dockerize
&& mv dockerize /usr/local/bin/
COPY scripts/download_box.sh /
RUN echo "Centos8 version $centos_version"ENV CENTOS_URL https://cloud.centos.org/centos/8-stream/x86_64/images/CentOS-Stream-Vagrant-8-$centos_version.x86_64.vagrant-libvirt.box
RUN /download_box.sh ${CENTOS_URL}RUN curl -L -o /initrd.img http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/images/pxeboot/initrd.img
RUN curl -L -o /vmlinuz http://mirror.centos.org/centos/8-stream/BaseOS/x86_64/os/images/pxeboot/vmlinuz
COPY scripts/* /基础镜像是fedora，dnf在fedora中相当于centos中的yum，工作目录是/，将脚本文件夹scripts里的脚本都复制到工作目录，下载dockerize到工作目录，dockerize可以做成下面的ssh小工具，在ssh执行命令前先用dockerize判断下22端口是否能在timeout超时300s前连上。download_box.sh的第一个参数是url，下载url指向的文件并转成qcow2镜像格式。initrd是个引导系统。vmlinuz是linux内核。
download_box.sh
代码语言：javascript复制#!/bin/bashset -eset -o pipefailcurl -L $1 | tar -zxvf - box.img
qemu-img convert -O qcow2 box.img box.qcow2rm box.imgcat >/usr/local/bin/ssh.sh <<EOL#!/bin/bashset -e
dockerize -wait tcp://192.168.66.1${n}:22 -timeout 300s &>/dev/null
ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no vagrant@192.168.66.1${n} -i vagrant.key -p 22 -q $@EOL脚本文件夹scripts里的脚本本篇暂不涉及，今后要用到的时候再提。
