1.依赖安装 （集群部署前提条件）

环境：三台centos7系统    ip自己规划就行

貔貅云：ansible快速部署k8s集群，

依赖条件 ：依赖安装

仅需要在部署节点安装即可，集群运行节点 无需执行   1.直接安装   2.脚本安装   两选一即可

安装步骤：

　1.直接安装-有网络情况

curl https://raw.githubusercontent.com/gopixiu-io/kubez-ansible/master/tools/setup_env.sh | bash

　2.脚本安装，

　　#自动获取，网络通时，通过curl命令直接获取脚本到本地

curl https://raw.githubusercontent.com/gopixiu-io/kubez-ansible/master/tools/setup_env.sh -o setup_env.sh

　　#手动获取，自动获取失败时，一般因为网络不通或者未安装curl

　　#拷贝项目的tools/setup_env.sh,并保存到  linux里面vi setup_env.sh

#!/usr/bin/env bash
#
# Bootstrap script to install kubernetes env.
#
# This script is intended to be used for install kubernetes env.

REPO=gopixiu-io
# 选择需要安装的分支，默认 master 分支
BRANCH=master

TARGET=kubez-ansible-${BRANCH//\//-}

function _ensure_lsb_release {
    if type lsb_release >/dev/null 2>&1; then
        return
    fi

    if type apt-get >/dev/null 2>&1; then
        apt-get -y install lsb-release
    elif type yum >/dev/null 2>&1; then
        yum -y install redhat-lsb-core
    fi
}

function _is_distro {
    if [[ -z "$DISTRO" ]]; then
        _ensure_lsb_release
        DISTRO=$(lsb_release -si)
    fi

    [[ "$DISTRO" == "$1" ]]
}

function is_ubuntu {
    _is_distro "Ubuntu"
}

function is_debian {
    _is_distro "Debian"
}

function is_centos {
    _is_distro "CentOS"
}

function prep_work {
    if is_centos; then
        if [[ "$(systemctl is-enabled firewalld)" == "active" ]]; then
            systemctl disable firewalld
        fi
        if [[ "$(systemctl is-active firewalld)" == "enabled" ]]; then
            systemctl stop firewalld
        fi

        configure_centos_sources
        yum -y install epel-release
        yum -y install git python-pip unzip
    elif is_ubuntu || is_debian; then
        if [[ "$(systemctl is-enabled ufw)" == "active" ]]; then
            systemctl disable ufw
        fi
        if [[ "$(systemctl is-active ufw)" == "enabled" ]]; then
            systemctl stop ufw
        fi

        if is_debian; then
            configure_debian_sources
        else
            configure_ubuntu_sources
        fi
        apt-get update
        apt install -y git python-pip unzip
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi
}

function cleanup {
    if is_centos; then
        yum clean all
    elif is_ubuntu || is_debian; then
        apt-get clean
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi
}

function configure_pip {
    mkdir -p ~/.pip
    cat > ~/.pip/pip.conf << EOF
[global]
trusted-host = mirrors.aliyun.com
index-url = http://mirrors.aliyun.com/pypi/simple/
EOF
}

function configure_centos_sources {
    if [ ! -f "/etc/yum.repos.d/CentOS-Base.repo.backup" ];then
         mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
    fi
    # CentOS 7
    curl http://mirrors.aliyun.com/repo/Centos-7.repo -o /etc/yum.repos.d/CentOS-Base.repo
}

function configure_debian_sources {
    if [ ! -f "/etc/apt/sources.list.backup" ];then
         mv /etc/apt/sources.list /etc/apt/sources.list.backup
    fi
    # debian 10.x (buster)
    cat > /etc/apt/sources.list << EOF
deb https://mirrors.aliyun.com/debian/ buster main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ buster main non-free contrib
deb https://mirrors.aliyun.com/debian-security buster/updates main
deb-src https://mirrors.aliyun.com/debian-security buster/updates main
deb https://mirrors.aliyun.com/debian/ buster-updates main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ buster-updates main non-free contrib
deb https://mirrors.aliyun.com/debian/ buster-backports main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ buster-backports main non-free contrib
EOF
}

function configure_ubuntu_sources() {
    if [ ! -f "/etc/apt/sources.list.backup" ];then
        mv /etc/apt/sources.list /etc/apt/sources.list.backup
    fi
    # ubuntu 18.04(bionic)
    cat > /etc/apt/sources.list << EOF
deb https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
EOF
}

function install_ansible {
    if is_centos; then
        yum -y install ansible
    elif is_ubuntu||is_debian; then
        apt-get -y install ansible
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi
}

function download_kubez_ansible {
    curl https://codeload.github.com/${REPO}/kubez-ansible/zip/refs/heads/${BRANCH} -o ${TARGET}.zip
    if [ $? -ne 0 ]; then
        exit 1
    fi

    unzip -q ${TARGET}.zip && mv ${TARGET} /tmp/kubez-ansible && git init /tmp/kubez-ansible
}

function install_kubez_ansible {
    if [[ ! -d /tmp/kubez-ansible ]]; then
        download_kubez_ansible
    fi
    # prepare the configuration for deploy
    cp -r /tmp/kubez-ansible/etc/kubez/ /etc/
    cp /tmp/kubez-ansible/ansible/inventory/multinode .

    install_ansible

    pip install -r /tmp/kubez-ansible/requirements.txt
    pip install /tmp/kubez-ansible/
}

# prepare and install kubernetes cluster
prep_work
configure_pip
# cleanup
install_kubez_ansible

　　#执行安装脚本

　　bash setup_env.sh

  验证  #执行kubez-ansible 有正常回显      kubez-ansible -h         # 工作目录(通常是/root目录)下自动生成multinode