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安装 Kubernetes 开发环境的脚本

在 Kubernetes开发之旅 第一阶段，我系统介绍了如何在Ubuntu 20.04 Desktop版本中安装Kubernetes 1.24.0的开发环境，这篇文档给出其中用到的脚本命令，不适合直接阅读，请结合以上视频使用。

为Ubuntu换阿里源

sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak  
sudo nano /etc/apt/sources.list

用如下阿里源替换该文件的已有内容：

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse  
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse  
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse  
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse  
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse  
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse  
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse  
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse  
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse  
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse  

sudo apt-get update

安装GNU

sudo apt install build-essential

安装Docker

sudo apt-get update  
sudo apt-get install \  
    ca-certificates \  
    curl \  
    gnupg \  
    lsb-release  

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg  

echo \  
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \  
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null  

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin

修改ContainerD 所用的镜像库地址

containerd config default > ~/config.toml

然后编辑～config.toml去添加信息，具体内容请看视频中这个环节

sudo mv ~/config.toml /etc/containerd/config.toml  
sudo systemctl restart containerd

安装rsync:

cd ~/Downloads  
wget https://github.com/WayneD/rsync/archive/refs/tags/v3.2.4.tar.gz  
tar -xf v3.2.4.tar.gz  
cd rsync-3.2.4

安装一些工具包

sudo apt install -y gcc g++ gawk autoconf automake python3-cmarkgfm  
sudo apt install -y acl libacl1-dev  
sudo apt install -y attr libattr1-dev  
sudo apt install -y libxxhash-dev  
sudo apt install -y libzstd-dev  
sudo apt install -y liblz4-dev  
sudo apt install -y libssl-dev

编译，安装

./configure  
make  
sudo cp ./rsync /usr/local/bin/  
sudo cp ./rsync-ssl /usr/local/bin/

安装jq：

sudo apt-get install jq

安装pyyaml:

sudo apt install python3-pip
pip install pyyaml

安装etcd：

ETCD_VER=v3.5.4  
curl -L https://storage.googleapis.com/etcd/${ETCD_VER}/etcd-${ETCD_VER}-linux-amd64.tar.gz -o /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz  
mkdir ~/etcd  
tar xzvf /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz -C ~/etcd --strip-components=1  
rm -f /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz  

sudo nano ~/.bashrc

最后加入：export PATH="/home/<用户名>/etcd:${PATH}"

source ~/.bashrc

安装golang (1.24及以上需要golang 1.18)：

cd ~/Downloads  
wget https://golang.google.cn/dl/go1.18.2.linux-amd64.tar.gz  
sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go1.18.2.linux-amd64.tar.gz  

mkdir ~/go  
mkdir ~/go/src  
mkdir ~/go/bin  
sudo nano ~/.bashrc

最后加入如下几行：

export GOPATH="/home/<用户名>/go"  
export GOBIN="/home/<用户名>/go/bin"  
export PATH="/usr/local/go/bin:$GOPATH/bin:${PATH}"  

source ~/.bashrc  

sudo nano /etc/sudoers

在secure_path一行加入如下目录：
/usr/local/go/bin （这个是$GOPATH/bin目录）
/home/<用户名>/etcd （这个是etcd命令所在目录）
/home/<用户名>/go/bin （这个是go get安装的程序所在位置）

设置golang代理：

go env -w GO111MODULE="on"  
go env -w GOPROXY="https://goproxy.cn,direct"

安装CFSSL：

go install github.com/cloudflare/cfssl/cmd/...@latest

下载kubernetes代码：

mkdir $GOPATH/src/k8s.io  && cd $GOPATH/src/k8s.io
git clone https://github.com/kubernetes/kubernetes.git  
git checkout -b kube1.24 v1.24.0

编译启动本地单节点集群：

cd $GOPATH/src/k8s.io/kubernetes
编译单个组建：sudo make WHAT="cmd/kube-apiserver"  
编译所有组件：sudo make all  
启动本地单节点集群： sudo ./hack/local-up-cluster.sh

开启本地debug功能

cd $GOPATH/src/k8s.io/kubernetes
# kubernetes go编译文件
sudo vi ./hack/lib/golang.sh
# 查找build_binaries()函数 vi语法
:/build_binaries()

找到一下bebug判断，注释，一直开启debug能力

	gogcflags="all=-trimpath=${trimroot} ${GOGCFLAGS:-}"
    if [[ "${DBG:-}" == 1 ]]; then
        # Debugging - disable optimizations and inlining.
        gogcflags="${gogcflags} -N -l"
    fi

    goldflags="all=$(kube::version::ldflags) ${GOLDFLAGS:-}"
    if [[ "${DBG:-}" != 1 ]]; then
        # Not debugging - disable symbols and DWARF.
        goldflags="${goldflags} -s -w"
    fi

注释判断，将debug直接放在下面， 再保存即可

	gogcflags="all=-trimpath=${trimroot} ${GOGCFLAGS:-}"
    # if [[ "${DBG:-}" == 1 ]]; then
    #     # Debugging - disable optimizations and inlining.
    #     gogcflags="${gogcflags} -N -l"
    # fi
	gogcflags="${gogcflags} -N -l"
    goldflags="all=$(kube::version::ldflags) ${GOLDFLAGS:-}"
    # if [[ "${DBG:-}" != 1 ]]; then
    #     # Not debugging - disable symbols and DWARF.
    #     goldflags="${goldflags} -s -w"
    # fi