Kernel Version:3.10.0-693.2.2.el7.x86_64
Golang Version: go1.8.4 linux/amd64
Docker: 17.05.0-ce
官方提供编译步骤依次为:make build和make binary。先看懂Makefile会帮助理解docker基本结构。
make binary
其实就是docker run docker-dev,即运行docker-dev一个容器,并在容器中的bundles文件夹下生成dockers所需的二进制文件。
通过查看Dockerfile以下内容:
# Install tomlv, vndr, runc, containerd, tini, docker-proxy
# Please edit hack/dockerfile/install-binaries.sh to update them.
COPY hack/dockerfile/binaries-commits /tmp/binaries-commits
COPY hack/dockerfile/install-binaries.sh /tmp/install-binaries.sh
RUN /tmp/install-binaries.sh tomlv vndr runc containerd tini proxy bindata
可以看出具体的binary来自脚本install-binaries.sh。
binaries-commits
此文件涉及到各类组件的commit编号,使用git checkout -q xxxxxxxx来切换到相对应的tree上
以下内容,实际便是抽出install-binaries.sh中的内容,独立完成,从而获得docker所有编译后的二进制文件。如要生成rpm文件,需进一步研究
可以在 下载 – Golang中国 (https://www.golangtc.com/download) 中下载相对应的安装包。安装包go1.9.linux-amd64.tar.gz和脚本install_go.sh放在同一个目录下。
代码下载: https://o-my-chenjian.com/download/Make-Docker-Executable-File-On-CentOS7/install_go.sh
#!/bin/bash
cur_path=`pwd`
# 解压go包
sudo tar zxvf ${cur_path}/go1.8.4.linux-amd64.tar.gz -C /usr/local
# 创建GOPATH文件夹
sudo mkdir -p /home/mygo
# 设置go环境变量
sudo echo "export GOROOT=/usr/local/go" >> /etc/profile
sudo echo "export GOPATH=/home/mygo" >> /etc/profile
sudo echo "export PATH=\$PATH:\$GOROOT/bin" >> /etc/profile
. /etc/profile
# 安装wget
sudo yum install -y wget
# 更新为aliyun源
sudo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
# 安装git
sudo yum install -y git
# 安装go包管理工具govendor
go get -u github.com/kardianos/govendor
cp ${GOPATH}/bin/govendor /usr/local/go/bin/
结果如下:
go version
<<'COMMENT'
go version go1.8.4 linux/amd64
COMMENT
ls /home/mygo/ /home/mygo/src/ /home/mygo/src/github.com/ /usr/local/go/bin/
<<'COMMENT'
/home/mygo/:
bin pkg src
/home/mygo/src/:
github.com
/home/mygo/src/github.com/:
kardianos
/usr/local/go/bin/:
go godoc gofmt govendor
COMMENT
yum install -y gcc make cmake device-mapper-devel btrfs-progs-devel libarchive libseccomp-devel glibc-static
组件:
操作:
cd $GOPATH/src/github.com/
mkdir docker && cd docker
# 下载相关版本的docker源码
git clone -b v17.05.0-ce https://github.com/moby/moby.git
cp -R moby/ docker && rm -rf moby/
# docker编译
cd $GOPATH/src/github.com/docker/docker/cmd/docker
go build
cp docker /usr/local/bin/
# dockerd编译
cd $GOPATH/src/github.com/docker/docker/cmd/dockerd
go build
cp dockerd /usr/local/bin/
组件:
操作:
# 下载相关版本的container源码
git clone https://github.com/containerd/containerd.git "${GOPATH}/src/github.com/docker/containerd"
cd "${GOPATH}/src/github.com/docker/containerd"
git checkout -q 9048e5e50717ea4497b757314bad98ea3763c145
# 组件编译
cd ${GOPATH}/src/github.com/docker/containerd
make static
<<'COMMENT'
cd ctr && go build -ldflags "-w -extldflags -static -X github.com/docker/containerd.GitCommit=9048e5e50717ea4497b757314bad98ea3763c145 " -tags "" -o ../bin/ctr
cd containerd && go build -ldflags "-w -extldflags -static -X github.com/docker/containerd.GitCommit=9048e5e50717ea4497b757314bad98ea3763c145 " -tags "" -o ../bin/containerd
cd containerd-shim && go build -ldflags "-w -extldflags -static -X github.com/docker/containerd.GitCommit=9048e5e50717ea4497b757314bad98ea3763c145 " -tags "" -o ../bin/containerd-shim
COMMENT
cp bin/containerd /usr/local/bin/docker-containerd
cp bin/containerd-shim /usr/local/bin/docker-containerd-shim
cp bin/ctr /usr/local/bin/docker-containerd-ctr
组件:
操作:
cd $GOPATH/src/github.com/
mkdir opencontainers && cd opencontainers
# 下载相关版本的runc源码
git clone -b v1.0.0-rc2 https://github.com/opencontainers/runc.git "${GOPATH}/src/github.com/opencontainers/runc"
# runc编译
cd ${GOPATH}/src/github.com/opencontainers/runc
makeselinux"}" static
<<'COMMENT'
CGO_ENABLED=1 go build -i -tags "selinux cgo static_build" -ldflags "-w -extldflags -static -X main.gitCommit="c91b5bea4830a57eac7882d7455d59518cdf70ec-dirty" -X main.version=1.0.0-rc2" -o runc .
COMMENT
cp runc /usr/local/bin/docker-runc
组件:
docker-init
操作:
cd $GOPATH/src/github.com/
mkdir krallin && cd krallin
# 下载相关版本的tini源码
git clone https://github.com/krallin/tini.git "$GOPATH/tini"
cd "$GOPATH/tini"
git checkout -q 949e6facb77383876aeff8a6944dde66b3089574
cmake .
<<'COMMENT'
-- The C compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Performing Test HAS_BUILTIN_FORTIFY
-- Performing Test HAS_BUILTIN_FORTIFY - Failed
-- Configuring done
-- Generating done
-- Build files have been written to: /home/mygo/tini
COMMENT
make tini-static
<<'COMMENT'
Scanning dependencies of target tini-static
[100%] Building C object CMakeFiles/tini-static.dir/src/tini.c.o
Linking C executable tini-static
[100%] Built target tini-static
COMMENT
cp tini-static /usr/local/bin/docker-init
组件:
docker-proxy
操作:
cd $GOPATH/src/github.com/docker
# 下载相关版本的proxy源码
git clone https://github.com/docker/libnetwork.git "$GOPATH/src/github.com/docker/libnetwork"
cd "$GOPATH/src/github.com/docker/libnetwork"
git checkout -q 7b2b1feb1de4817d522cc372af149ff48d25028
# proxy编译
go build -ldflags="$PROXY_LDFLAGS" -o /usr/local/bin/docker-proxy github.com/docker/libnetwork/cmd/proxy
ll /usr/local/bin/docker*
<<'COMMENT'
-rwxr-xr-x. 1 root root 25845680 Oct 10 14:00 /usr/local/bin/docker
-rwxr-xr-x. 1 root root 12474568 Oct 10 14:01 /usr/local/bin/docker-containerd
-rwxr-xr-x. 1 root root 11435336 Oct 10 14:03 /usr/local/bin/docker-containerd-ctr
-rwxr-xr-x. 1 root root 3858880 Oct 10 14:04 /usr/local/bin/docker-containerd-shim
-rwxr-xr-x. 1 root root 55072232 Oct 10 14:02 /usr/local/bin/dockerd
-rwxr-xr-x. 1 root root 824568 Oct 10 14:59 /usr/local/bin/docker-init
-rwxr-xr-x. 1 root root 2528043 Oct 10 15:10 /usr/local/bin/docker-proxy
-rwxr-xr-x. 1 root root 10894408 Oct 10 14:16 /usr/local/bin/docker-runc
COMMENT
groupadd docker
dockerd
<<'COMMENT'
INFO[0000] libcontainerd: new containerd process, pid: 9024
WARN[0000] containerd: low RLIMIT_NOFILE changing to max current=1024 max=4096
WARN[0001] failed to rename /var/lib/docker/tmp for background deletion: %!s(<nil>). Deleting synchronously
INFO[0001] [graphdriver] using prior storage driver: overlay
INFO[0001] Graph migration to content-addressability took 0.00 seconds
INFO[0001] Loading containers: start.
INFO[0001] Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a preferred IP address
INFO[0001] Loading containers: done.
INFO[0001] Daemon has completed initialization
INFO[0001] Docker daemon commit=library-import graphdriver=overlay version=library-import
INFO[0001] API listen on /var/run/docker.sock
COMMENT
ps aux|grep docker
<<'COMMENT'
root 11753 0.2 2.8 343472 28860 pts/1 Sl+ 14:09 0:00 dockerd
root 11756 0.0 0.6 267908 6240 ? Ssl 14:09 0:00 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/containerd --shim docker-containerd-shim --runtime docker-runc
root 11890 0.0 0.0 112660 976 pts/2 R+ 14:10 0:00 grep --color=auto docker
COMMENT
docker version
<<'COMMENT'
Client:
Version: library-import
API version: 1.29
Go version: go1.8.4
Git commit: library-import
Built: library-import
OS/Arch: linux/amd64
Server:
Version: library-import
API version: 1.29 (minimum version 1.12)
Go version: go1.8.4
Git commit: library-import
Built: library-import
OS/Arch: linux/amd64
Experimental: false
COMMENT
docker pull busybox
docker run -idt busybox
<<'COMMENT'
b6f61b4b5ec9ce2b4331a47a1e8a3552b2162ca0f152ec2e02dfbf169d64a80a
COMMENT
docker ps -a
<<'COMMENT'
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
b6f61b4b5ec9 busybox "sh" 27 minutes ago Up 27 minutes loving_noether
COMMENT
可以看到,在启动dockerd后,会启动另一个程序docker-containerd。
cat > docker.service <<EOF
[Unit]
Description=Docker Application Container Engine
Documentation=http://docs.docker.io
[Service]
EnvironmentFile=-/run/flannel/docker
ExecStart=/usr/local/bin/dockerd --log-level=error $DOCKER_NETWORK_OPTIONS
ExecReload=/bin/kill -s HUP $MAINPID
Restart=on-failure
RestartSec=5
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
Delegate=yes
KillMode=process
[Install]
WantedBy=multi-user.target
EOF
sudo cp docker.service /etc/systemd/system/docker.service
sudo systemctl daemon-reload
sudo systemctl enable docker
<<'COMMENT'
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /etc/systemd/system/docker.service.
COMMENT
sudo systemctl start docker
sudo systemctl status docker
<<'COMMENT'
● docker.service - Docker Application Container Engine
Loaded: loaded (/etc/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2017-10-11 15:27:51 CST; 3s ago
Docs: http://docs.docker.io
Main PID: 1152 (dockerd)
Memory: 67.2M
CGroup: /system.slice/docker.service
├─1152 /usr/local/bin/dockerd --log-level=error
└─1156 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/containerd...
Oct 11 15:27:51 localhost.localdomain systemd[1]: Started Docker Application Container Engine.
Oct 11 15:27:51 localhost.localdomain systemd[1]: Starting Docker Application Container Engine...
COMMENT
参考: http://blog.csdn.net/yongan1006/article/details/8142527
参考: http://blog.csdn.net/shudaqi2010/article/details/32938715