k8s导出ymal

导出某个命名空间的所有yml信息

#!/bin/bash

set -e

useage(){

    echo "使用:"

    echo " 导出k8s的yml命令: export.sh 保存目录 namespace"

}

if [ $# -lt 1 ];then

    useage

    exit

fi

DUMPDIR=$1

NAMESPACE=$2

list_names(){

    kubectl -n"${1}" get "${2}" -o custom-columns='NAME:metadata.name' --no-headers

}

dump_workload(){

    local NAMESPACE=$1

    local WORKLOAD_NAME=$2

    local i

    mkdir -p"${DUMPDIR}/${NAMESPACE}/${WORKLOAD_NAME}"

    mapfile -t WORKLOADS < <(list_names "${NAMESPACE}" "${WORKLOAD_NAME}")

    for ((i=1;i<=${#WORKLOADS[@]};i++ )); do

        WORKLOAD="${WORKLOADS[$i-1]}"

        echo "正在导出 ${NAMESPACE} ${WORKLOAD_NAME} ${WORKLOAD}"

        kubectl -n"${NAMESPACE}" get "${WORKLOAD_NAME}" "${WORKLOAD}" -o yaml --export > "${DUMPDIR}/${NAMESPACE}/${WORKLOAD_NAME}/${WORKLOAD}.yaml" 2>/dev/null

    done

}

if [ -z "${NAMESPACE}" ];then

mapfile -t WORKLOAD_NAMES < <(kubectl api-resources -oname --namespaced=false | grep -vE "(componentstatuses|authentication.k8s.io|authorization.k8s.io)")

NAMESPACE="default"

else

mapfile -t WORKLOAD_NAMES < <(kubectl api-resources -oname --namespaced=true | grep -vE "(bindings|secrets|authorization.k8s.io)")

fi

mkdir -p "${DUMPDIR}/${NAMESPACE}"

for ((i=1;i<=${#WORKLOAD_NAMES[@]};i++ )); do

    WORKLOAD_NAME="${WORKLOAD_NAMES[$i-1]}"

    dump_workload"${NAMESPACE}" "${WORKLOAD_NAME}"

done

echo "搞定"

示例:export.sh 保存目录 namespace