Rancher 离线安装

当需要安装Rancher的主机只有内网，而没有外网通信的时候，Rancher 的安装就成为一大难题，这里记录下Rancher离线安装的步骤，让你的主机没有互联网也能安装Rancher。

1、首先找到 Rancher 相应版本 的 rancher-images.txt；

https://github.com/rancher/rancher/releases

2、通过RKE生成镜像清单

./rke config --system-images -all >> ./rancher-images.txt

rke  链接：https://pan.baidu.com/s/18uP0FREHXiAkw1CsX33PNw    提取码：2ih2 

3、解析模板以获取镜像详细信息

./linux-amd64/helm template ./cert-manager-v0.6.7.tgz | grep -oP '(?<=image: ").*(?=")' >> ./rancher-images.txt

helm 链接：https://pan.baidu.com/s/1r1TBpTlTdOTUrwF2t8I2Gw      提取码：0is3 

cert-manager 链接：https://pan.baidu.com/s/1w7QLBWI438js6M_GrPm9vQ  提取码：65z6 

4、对镜像列表进行排序和去重，以去除重复的镜像

sort -u rancher-images.txt -o rancher-images.txt

5、复制脚本文件

rancher-save-images.sh

#!/bin/bash
# 定义日志
workdir='../pwd'
log_file=${workdir}/sync_images_$(date +"%Y-%m-%d").log

logger()
{
    log=$1
    cur_time='['$(date +"%Y-%m-%d %H:%M:%S")']'
    echo ${cur_time} ${log} | tee -a ${log_file}
}

list="../rancher-images.txt"
#images="rancher-images.tar.gz"

POSITIONAL=()
while [[ $# -gt 0 ]]; do
    key="$1"
    case $key in
        -i|--images)
        images="$2"
        shift # past argument
        shift # past value
        ;;
        -l|--image-list)
        list="$2"
        shift # past argument
        shift # past value
        ;;
        -h|--help)
        help="true"
        shift
    ;;
    esac
done

usage () {
    echo "USAGE: $0 [--image-list rancher-images.txt] [--images rancher-images.tar.gz]"
    echo "  [-l|--images-list path] text file with list of images. 1 per line."
    echo "  [-l|--images path] tar.gz generated by docker save."
    echo "  [-h|--help] Usage message"
}

if [[ $help ]]; then
    usage
    exit 0
fi

set -e -x

mkdir -p rancher-images-$(date +"%Y-%m-%d")
cd rancher-images-$(date +"%Y-%m-%d")

for i in $(cat ${list}); 
do
    docker pull ${i}

    if [ $? -ne 0 ]; then
        logger "${i} pull failed."
    else
        logger "${i} pull successfully."
    fi

    docker save ${i} | gzip > $(echo $i | sed "s#/#-#g; s#:#-#g").tgz

    if [ $? -ne 0 ]; then
        logger "${i} save failed."
    else
        logger "${i} save successfully."
    fi
done

rancher-load-images.sh

#!/bin/bash

# 定义日志
workdir='../pwd'
log_file=${workdir}/sync_images_$(date +"%Y-%m-%d").log

logger()
{
    log=$1
    cur_time='['$(date +"%Y-%m-%d %H:%M:%S")']'
    echo ${cur_time} ${log} | tee -a ${log_file}
}

POSITIONAL=()
while [[ $# -gt 0 ]]; do
    key="$1"
    case $key in
        -i|--images-path)
        images_path="$2"
        shift # past argument
        shift # past value
        ;;
        -l|--image-list)
        list="$2"
        shift # past argument
        shift # past value
        ;;
        -h|--help)
        help="true"
        shift
        ;;
    esac
done

usage () {
    echo "USAGE: $0 [--image-list rancher-images.txt] [--images rancher-images.tar.gz]"
    echo "  [-l|--images-list path] text file with list of images. 1 per line."
    echo "  [-l|--images path] tar.gz generated by docker save."
    echo "  [-h|--help] Usage message"
}

if [[ $help ]]; then
    usage
    exit 0
fi

set -e -x

# 镜像压缩文件列表
images=$(ls $images_path | grep ".tgz")
cd $images_path

# 导入镜像
docker_load ()
{
    for imgs in $(echo ${images});
    do
        gunzip -c ${imgs} | docker load

        if [ $? -ne 0 ]; then
            logger "${imgs} load failed."
        else
            logger "${imgs} load successfully."
        fi
    done
}

docker_load

rancher-push-images.sh

#!/bin/bash

## 镜像上传说明
# 需要先在镜像仓库中创建 rancher 项目
# 根据实际情况更改以下私有仓库地址

# 定义日志
workdir='../pwd'
log_file=${workdir}/sync_images_$(date +"%Y-%m-%d").log

logger()
{
    log=$1
    cur_time='['$(date +"%Y-%m-%d %H:%M:%S")']'
    echo ${cur_time} ${log} | tee -a ${log_file}
}

images_hub() {

    while true; do
        read -p "输入镜像仓库地址(不加http/https): " registry
        read -p "输入镜像仓库用户名: " registry_user
        read -p "输入镜像仓库用户密码: " registry_password
        echo "您设置的仓库地址为: ${registry},用户名: ${registry_user},密码: xxx"
        read -p "是否确认(Y/N): " confirm

        if [ $confirm != Y ] && [ $confirm != y ] && [ $confirm == '' ]; then
            echo "输入不能为空，重新输入"
        else
            break
        fi
    done
}

images_hub

echo "镜像仓库 $(docker login -u ${registry_user} -p ${registry_password} ${registry})"

images=$(docker images -a | grep -v TAG | awk '{print $1 ":" $2}')
namespace=rancher

docker_push() {
    for imgs in $(echo ${images}); do
        n=$(echo ${imgs} | awk -F"/" '{print NF-1}')
        #如果镜像名中没有/，那么此镜像一定是library仓库的镜像；
        if [ ${n} -eq 0 ]; then
            img_tag=${imgs}
            #namespace=rancher
            #重命名镜像
            docker tag ${imgs} ${registry}/${namespace}/${img_tag}
            #删除原始镜像
            #docker rmi ${imgs}
            #上传镜像
            docker push ${registry}/${namespace}/${img_tag}
        #如果镜像名中有一个/，那么/左侧为项目名，右侧为镜像名和tag
        elif [ ${n} -eq 1 ]; then
            img_tag=$(echo ${imgs} | awk -F"/" '{print $2}')
            #namespace=$(echo ${imgs} | awk -F"/" '{print $1}')
            #重命名镜像
            docker tag ${imgs} ${registry}/${namespace}/${img_tag}
            #删除旧镜像
            #docker rmi ${imgs}
            #上传镜像
            docker push ${registry}/${namespace}/${img_tag}
        #如果镜像名中有两个/，
        elif [ ${n} -eq 2 ]; then
            img_tag=$(echo ${imgs} | awk -F"/" '{print $3}')
            #namespace=$(echo ${imgs} | awk -F"/" '{print $2}')
            #重命名镜像
            docker tag ${imgs} ${registry}/${namespace}/${img_tag}
            #删除旧镜像
            #docker rmi ${imgs}
            #上传镜像
            docker push ${registry}/${namespace}/${img_tag}
        else
            #标准镜像为四层结构，即：仓库地址/项目名/镜像名:tag,如不符合此标准，即为非有效镜像。
            echo "No available images"
        fi
    done
}

docker_push

6、rancher-save-images.sh 赋权限并执行  备份镜像

chmod +x rancher-save-images.sh

./rancher-save-images.sh

7、离线安装Rancher镜像文件，rancher-load-images.sh

chmod +x rancher-load-images.sh

./rancher-load-images.sh --images-path rancher-images-2019-06-07/

8、此外，还可以将镜像上传至私有镜像仓库

chmod +x rancher-push-images.sh 
./rancher-push-images.sh