注册、快照与恢复
注册、快照与恢复
# 注册文件系统仓库（节点配置需要 path.repo 指向同路径）
PUT /_snapshot/backup
{ "type": "fs", "settings": { "location": "/mnt/backups" } }
# 创建快照（含全部索引）
PUT /_snapshot/backup/snap-2026-10-12?wait_for_completion=true
# 恢复指定索引（注意恢复前索引名冲突处理）
POST /_snapshot/backup/snap-2026-10-12/_restore
{ "indices": "logs-app", "rename_pattern": "logs-app", "rename_replacement": "logs-app-restored" }快照是增量存储但彼此独立完整；定期快照 + 恢复演练才算完整备份方案。