111 lines
4.0 KiB
Bash
111 lines
4.0 KiB
Bash
#!/bin/bash
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# 定义命名空间
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namespace="命名空间"
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# 创建一个带时间戳的备份目录，保持目录整洁
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backup_dir="backup_${namespace}_$(date +%Y%m%d%H%M%S)"
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mkdir -p "${backup_dir}"
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# YQ 清理规则：去除指定的 metadata 字段以及整个 status 字段
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# 注意：加入了 .metadata.generation，这在 deployment/statefulset 中也很常见
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yq_filter='del(.metadata.managedFields, .metadata.annotations, .metadata.creationTimestamp, .metadata.uid, .metadata.resourceVersion, .metadata.selfLink, .metadata.generation, .status)'
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install_yq() {
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echo "=> 检查并安装 yq 工具..."
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if ! command -v yq &> /dev/null; then
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wget https://oss.demo.uavcmlc.com/cmlc-installation/downloadfile/amd/yq_linux_amd64 -O /usr/local/bin/yq
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# wget https://oss.demo.uavcmlc.com/cmlc-installation/downloadfile/aarch/yq_linux_arm64 -O /usr/local/bin/yq
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chmod +x /usr/local/bin/yq
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echo "yq 安装完成！"
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else
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echo "yq 已安装，跳过。"
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fi
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echo ""
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}
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# 备份单个应用的函数
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backup_single_app() {
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local app_name=$1
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local target_file="${backup_dir}/${app_name}.yaml"
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echo "=> 正在备份应用: ${app_name}"
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# 创建空文件或清空已有文件
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> "${target_file}"
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# 1. 备份 Deployment
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if kubectl get deployment "${app_name}" -n "${namespace}" &>/dev/null; then
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echo "---" >> "${target_file}"
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kubectl get deployment "${app_name}" -n "${namespace}" -o yaml | yq eval "${yq_filter}" - >> "${target_file}"
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fi
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# 2. 备份 StatefulSet
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if kubectl get statefulset "${app_name}" -n "${namespace}" &>/dev/null; then
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echo "---" >> "${target_file}"
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kubectl get statefulset "${app_name}" -n "${namespace}" -o yaml | yq eval "${yq_filter}" - >> "${target_file}"
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fi
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# 3. 备份 Service (假设 Service 名称与应用名称一致)
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if kubectl get service "${app_name}" -n "${namespace}" &>/dev/null; then
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echo "---" >> "${target_file}"
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kubectl get service "${app_name}" -n "${namespace}" -o yaml | yq eval "${yq_filter}" - >> "${target_file}"
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fi
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# 4. 备份 ConfigMap (假设主 ConfigMap 名称与应用名称一致)
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if kubectl get configmap "${app_name}" -n "${namespace}" &>/dev/null; then
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echo "---" >> "${target_file}"
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kubectl get configmap "${app_name}" -n "${namespace}" -o yaml | yq eval "${yq_filter}" - >> "${target_file}"
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fi
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}
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backup_ingress() {
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echo "=> 正在单独备份所有 Ingress 资源..."
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local ingress_file="${backup_dir}/all-ingress-${namespace}.yaml"
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# 检查是否存在 ingress 资源
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if [ "$(kubectl get ingress -n "${namespace}" --no-headers 2>/dev/null | wc -l)" -gt 0 ]; then
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# 因为 get ingress 拿到的是一个 List，所以需要加 .items[] 遍历处理
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kubectl get ingress -n "${namespace}" -o yaml | yq eval '.items[] | '"${yq_filter}" - > "${ingress_file}"
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# 在每个 apiVersion 前面加上 --- 分隔符
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sed -i '/^apiVersion:/i ---' "${ingress_file}"
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echo "Ingress 备份完成: ${ingress_file}"
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else
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echo "命名空间 ${namespace} 下未找到 Ingress 资源。"
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fi
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echo ""
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}
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main() {
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install_yq
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echo "================================================="
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echo "开始执行命名空间 ${namespace} 的多应用切分备份"
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echo "备份目录: ${backup_dir}"
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echo "================================================="
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# 获取该命名空间下所有的 Deployment 和 StatefulSet 的名称，作为应用的基准列表
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# 使用 sort -u 去重，防止某些同名情况
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app_list=$(kubectl get deployments,statefulsets -n "${namespace}" -o custom-columns=NAME:.metadata.name --no-headers | sort -u)
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if [ -z "${app_list}" ]; then
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echo "未在命名空间中找到任何 Deployment 或 StatefulSet。"
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exit 0
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fi
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# 遍历每个应用名称，执行合并备份
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for app in ${app_list}; do
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backup_single_app "${app}"
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done
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echo ""
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# 单独备份 Ingress
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backup_ingress
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echo "================================================="
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echo "所有资源备份完毕！文件已存放在 ${backup_dir}/ 目录下。"
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echo "================================================="
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}
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# 执行主流程
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main |