在Elasticsearch中,数据备份和迁移通常使用snapshot和restore功能来完成。以下是使用Elasticsearch的slotstore插件进行备份和恢复的示例代码:
备份数据到共享存储库(repository):
bash
# 在Elasticsearch中添加一个共享存储库
PUT /_snapshot/my_backup
{
"type": "fs",
"settings": {
"location": "/path/to/shared/storage"
}
}
# 创建一个备份
POST /_snapshot/my_backup/snapshot_1
{
"indices": "index_1,index_2"
}
恢复数据:
bash
# 首先,确保Elasticsearch中已经定义了repository
# 从备份中恢复所有索引
POST /_snapshot/my_backup/snapshot_1/_restore
# 或者,仅恢复特定索引
POST /_snapshot/my_backup/snapshot_1/_restore
{
"indices": "index_1",
"rename_pattern": "index_1",
"rename_replacement": "restored_index_1"
}