镜像批量导入导出

在安装longhorn过程中，觉得下载和上传镜像脚本比较好，记录下，以备以后使用：

保存镜像脚本

cyxinda@node1:~/tools$ cat save-images.sh 
#!/bin/bash
list="longhorn-images.txt"

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
		;;
		*)
		echo "Error! invalid flag: ${key}"
		help="true"
		break
		;;
	esac
done

usage () {
	echo "USAGE: $0 [--image-list longhorn-images.txt] [--images longhorn-images.tar.gz]"
	echo "  [-l|--images-list path] text file with list of images. 1 per line."
	echo "  [-i|--images path] tar.gz generated by docker save. If this flag is empty, the script does not export images to a tar.gz file"
	echo "  [-h|--help] Usage message"
}

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

set -e -x

for i in $(cat ${list}); do
	nerdctl -n k8s.io pull --all-platforms ${i}
done

if [[ $images ]]; then
	nerdctl -n k8s.io save $(cat ${list} | tr '\n' ' ') | gzip -c > ${images}
fi

cyxinda@node1:~/tools$ cat longhorn-images.txt 
longhornio/csi-attacher:v3.4.0
longhornio/csi-provisioner:v2.1.2
longhornio/csi-resizer:v1.2.0
longhornio/csi-snapshotter:v3.0.3
longhornio/csi-node-driver-registrar:v2.5.0
longhornio/backing-image-manager:v3_20220609
longhornio/longhorn-engine:v1.3.0
longhornio/longhorn-instance-manager:v1_20220611
longhornio/longhorn-manager:v1.3.0
longhornio/longhorn-share-manager:v1_20220531
longhornio/longhorn-ui:v1.3.0

调用方式：

wget https://raw.githubusercontent.com/longhorn/longhorn/v1.3.0/scripts/save-images.sh
chmod +x save-images.sh
./save-images.sh --image-list longhorn-images.txt --images longhorn-images.tar.gz

导入镜像

root@node1:/home/cyxinda/tools# cat load-images.sh 
#!/bin/bash
list="longhorn-images.txt"

POSITIONAL=()
while [[ $# -gt 0 ]]; do
    key="$1"
    case $key in
        -r|--registry)
        reg="$2"
        shift # past argument
        shift # past value
        ;;
        -l|--image-list)
        list="$2"
        shift # past argument
        shift # past value
        ;;
        -i|--images)
        images="$2"
        shift # past argument
        shift # past value
        ;;
        -h|--help)
        help="true"
        shift
        ;;
        *)
        echo "Error! invalid flag: ${key}"
        help="true"
        break
        ;;
    esac
done

usage () {
    echo "USAGE: $0 [--image-list longhorn-images.txt] [--images longhorn-images.tar.gz] --registry my.registry.com:5000"
    echo "  [-l|--images-list path] text file with list of images. 1 per line."
    echo "  [-i|--images path] tar.gz generated by docker save. If empty, the script will try to find images in local docker images"
    echo "  [-r|--registry registry:port] target private registry:port. By default, registry is Docker Hub"
    echo "  [-h|--help] Usage message"
}

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

if [[ -n $reg ]]; then
    reg+="/"
fi

set -e -x

if [[ $images ]]; then
    docker load --input ${images}
fi

for i in $(cat ${list}); do
    case $i in
    */*/*)
        docker tag ${i} ${reg}longhornio/${i#*/*/}
        docker push ${reg}longhornio/${i#*/*/}
        ;;
    */*)
        docker tag ${i} ${reg}longhornio/${i#*/}
        docker push ${reg}longhornio/${i#*/}
        ;;
    *)
        docker tag ${i} ${reg}longhornio/${i}
        docker push ${reg}longhornio/${i}
        ;;
    esac

使用：

wget https://raw.githubusercontent.com/longhorn/longhorn/v1.3.0/scripts/load-images.sh
chmod +x load-images.sh
./load-images.sh --image-list longhorn-images.txt --images longhorn-images.tar.gz --registry <YOUR-PRIVATE-REGISTRY>