最近在尝试阅读docker源码，一直想弄明白docker关于namespace等的代码的在哪，以及怎么触发。然而在阅读时发现根本找不到代码。。。想着还是先源码安装下docker，然后边运行边打印些调试信息看看再说
安装之前
docker源码需在docker容器编译环境中编译，所以先安装docker，安装环境依旧是ubuntu14.04
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echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" | sudo tee /etc/apt/sources.list.d/docker.list
sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118e89f3a912897c070adbf76221572c52609d
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install docker-engine |
起初是使用apt-get install docker.io安装，但在编译源码的时候会遇到arg错误。
安装
docker的安装命令很简单，虽然错误很多= =
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apt-get install make git golang
git clone https://git@github.com/docker/docker
cd docker
make build
make binary |
遇到的问题与解决方案
unknown instruction: arg
原因：
docker hub's automated build is still running docker 1.8 and doesn't support arg yet. there is a github issue tracking their upgrade to 1.9.
解决方案：采用安装最新的docker-engine方式
docker daemon启动失败
fata[0000] error starting daemon: error initializing graphdriver: "/var/lib/docker" contains several valid graphdrivers: aufs, devicemapper; please cleanup or explicitly choose storage driver (-s <driver>)
解决方案：移除devicemap文件夹，如 mv /var/lib/docker/devicemapper/ .
make build出错一
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step 6 : run apt-get update && apt-get install -y apparmor apt-utils aufs-tools automake bash-completion binutils-mingw-w64 bsdmainutils btrfs-tools build-essential clang createrepo curl dpkg-sig gcc-mingw-w64 git iptables jq libapparmor-dev libcap-dev libltdl-dev libsqlite3-dev libsystemd-journal-dev libtool mercurial net-tools pkg-config python-dev python-mock python-pip python-websocket ubuntu-zfs xfsprogs libzfs-dev tar zip --no-install-recommends && pip install awscli==1.10.15
---> running in 32ad02db3575
get:1 http://ppa.launchpad.net trusty inrelease [15.5 kb]
ign http://httpredir.debian.org jessie inrelease
get:2 http://httpredir.debian.org jessie-updates inrelease [142 kb]
get:3 http://security.debian.org jessie/updates inrelease [63.1 kb]
get:4 http://httpredir.debian.org jessie release.gpg [2373 b]
get:5 http://ppa.launchpad.net trusty/main amd64 packages [5150 b]
get:6 http://httpredir.debian.org jessie-updates/main amd64 packages [17.6 kb]
get:7 http://httpredir.debian.org jessie release [148 kb]
get:8 http://httpredir.debian.org jessie/main amd64 packages [9035 kb]
get:9 http://security.debian.org jessie/updates/main amd64 packages [232 kb]
fetched 9662 kb in 19s (504 kb/s)
w: failed to fetch http://httpredir.debian.org/debian/dists/jessie/main/binary-amd64/packages hash sum mismatch
w: failed to fetch http://security.debian.org/dists/jessie/updates/main/binary-amd64/packages hash sum mismatch
e: some index files failed to download. thew: failed to fetch http://httpredir.debian.org/debian/dists/jessie/main/binary-amd64/packages hash sum mismatch |
看样子是源的问题哎╮(╯▽╰)╭
而且是run指令，应该是dockerfile运行容器之后的源错误，so，看下docker/dockerfile
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# arg apt_mirror=httpredir.debian.org
run sed -i s/httpredir.debian.org/$apt_mirror/g /etc/apt/sources.list |
在这里修改了源~从网上重新找个ftp.cn.debian.org，然而，。。。还是错。。。
好吧，那把这两句直接全部注释掉，用163的debian源内容echo到容器里，执行
run echo "deb jessie main non-free contrib\\ndeb jessie-updates main non-free contrib\\ndeb jessie-backports main non-free contrib\\ndeb-src jessie main non-free contrib\\ndeb-src jessie-updates main non-free contrib\\ndeb-src jessie-backports main non-free contrib\\ndeb jessie/updates main non-free contrib\\ndeb-src jessie/updates main non-free contrib" | tee /etc/apt/sources.list
再执行make build，出现依赖问题，那就用aptitude吧
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run apt-get update && apt-get install -y aptitude
run aptitude install -y \\ |
（同时去掉–no-install-recommends\\那一行）
make build出错二
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step 15 : run set -x && export seccomp_path="$(mktemp -d)" && curl -fssl "https://github.com/seccomp/libseccomp/releases/download/v${seccomp_version}/libseccomp-${seccomp_version}.tar.gz" | tar -xzc "$seccomp_path" --strip-components=1 && ( cd "$seccomp_path" && ./configure --prefix=/usr/local && make && make install && ldconfig ) && rm -rf "$seccomp_path"
---> running in 4ad66d28289d
+ mktemp -d
+ export seccomp_path=/tmp/tmp.twpyfcirjc
+ curl -fssl https://github.com/seccomp/libseccomp/releases/download/v2.3.1/libseccomp-2.3.1.tar.gz
+ tar -xzc /tmp/tmp.twpyfcirjc --strip-components=1
curl: (56) ssl read: error:00000000:lib(0):func(0):reason(0), errno 104
gzip: stdin: unexpected end of file
tar: unexpected eof in archive
tar: unexpected eof in archive
tar: error is not recoverable: exiting now |
网络问题，网上有说先下载下来再用add添加进去，结果发现校园网貌似访问这挺快的，连上vpn再执行就行了。。
make binary 出错
error：/usr/local/go/pkg/tool/linux_amd64/link: running gcc failed: fork/exec /usr/bin/gcc: cannot allocate memory
内存不足~增大虚拟机内存呗
安装结果
make build
make binary
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持快网idc。
原文链接：http://blog.csdn.net/lwyeluo/article/details/51765309
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