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CREATE-REPOSITORY

CREATE-REPOSITORY

Name

CREATE REPOSITORY

Description

该语句用于创建仓库。仓库用于属于备份或恢复。仅 root 或 superuser 用户可以创建仓库。

语法:

CREATE [READ ONLY] REPOSITORY `repo_name`
WITH [BROKER `broker_name`|S3|hdfs]
ON LOCATION `repo_location`
PROPERTIES ("key"="value", ...);

说明:

  • 仓库的创建,依赖于已存在的 broker 或者直接通过AWS s3 协议访问云存储,或者直接访问HDFS
  • 如果是只读仓库,则只能在仓库上进行恢复。如果不是,则可以进行备份和恢复操作。
  • 根据 broker 或者S3、hdfs的不同类型,PROPERTIES 有所不同,具体见示例。
  • ON LOCATION ,如果是 S3 , 这里后面跟的是 Bucket Name。

Example

  1. 创建名为 bos_repo 的仓库,依赖 BOS broker "bos_broker",数据根目录为:bos://palo_backup
CREATE REPOSITORY `bos_repo`
WITH BROKER `bos_broker`
ON LOCATION "bos://palo_backup"
PROPERTIES
(
"bos_endpoint" = "http://gz.bcebos.com",
"bos_accesskey" = "bos_accesskey",
"bos_secret_accesskey"="bos_secret_accesskey"
);
  1. 创建和示例 1 相同的仓库,但属性为只读:
CREATE READ ONLY REPOSITORY `bos_repo`
WITH BROKER `bos_broker`
ON LOCATION "bos://palo_backup"
PROPERTIES
(
"bos_endpoint" = "http://gz.bcebos.com",
"bos_accesskey" = "bos_accesskey",
"bos_secret_accesskey"="bos_accesskey"
);
  1. 创建名为 hdfs_repo 的仓库,依赖 Baidu hdfs broker "hdfs_broker",数据根目录为:hdfs://hadoop-name-node:54310/path/to/repo/
CREATE REPOSITORY `hdfs_repo`
WITH BROKER `hdfs_broker`
ON LOCATION "hdfs://hadoop-name-node:54310/path/to/repo/"
PROPERTIES
(
"username" = "user",
"password" = "password"
);
  1. 创建名为 s3_repo 的仓库,直接链接云存储,而不通过broker.
CREATE REPOSITORY `s3_repo`
WITH S3
ON LOCATION "s3://s3-repo"
PROPERTIES
(
"s3.endpoint" = "http://s3-REGION.amazonaws.com",
"s3.access_key" = "AWS_ACCESS_KEY",
"s3.secret_key"="AWS_SECRET_KEY",
"s3.region" = "REGION"
);
  1. 创建名为 hdfs_repo 的仓库,直接链接HDFS,而不通过broker.
CREATE REPOSITORY `hdfs_repo`
WITH hdfs
ON LOCATION "hdfs://hadoop-name-node:54310/path/to/repo/"
PROPERTIES
(
"fs.defaultFS"="hdfs://hadoop-name-node:54310",
"hadoop.username"="user"
);
  1. 创建名为 minio_repo 的仓库,直接通过 s3 协议链接 minio.
CREATE REPOSITORY `minio_repo`
WITH S3
ON LOCATION "s3://minio_repo"
PROPERTIES
(
"s3.endpoint" = "http://minio.com",
"s3.access_key" = "MINIO_USER",
"s3.secret_key"="MINIO_PASSWORD",
"s3.region" = "REGION"
"use_path_style" = "true"
);
  1. 使用临时秘钥创建名为 minio_repo 的仓库
SinceVersion 1.2
CREATE REPOSITORY `minio_repo`
WITH S3
ON LOCATION "s3://minio_repo"
PROPERTIES
(
"s3.endpoint" = "AWS_ENDPOINT",
"s3.access_key" = "AWS_TEMP_ACCESS_KEY",
"s3.secret_key" = "AWS_TEMP_SECRET_KEY",
"s3.session_token" = "AWS_TEMP_TOKEN",
"s3.region" = "AWS_REGION"
)
  1. 使用腾讯云 COS 创建仓库
CREATE REPOSITORY `cos_repo`
WITH S3
ON LOCATION "s3://backet1/"
PROPERTIES
(
"s3.access_key" = "ak",
"s3.secret_key" = "sk",
"s3.endpoint" = "http://cos.ap-beijing.myqcloud.com",
"s3.region" = "ap-beijing"
);
  1. 创建仓库并删除已经存在的 snapshot
CREATE REPOSITORY `s3_repo`
WITH S3
ON LOCATION "s3://s3-repo"
PROPERTIES
(
"s3.endpoint" = "http://s3-REGION.amazonaws.com",
"s3.region" = "s3-REGION",
"s3.access_key" = "AWS_ACCESS_KEY",
"s3.secret_key"="AWS_SECRET_KEY",
"s3.region" = "REGION",
"delete_if_exists" = "true"
);

注:目前只有 s3 支持 "delete_if_exists" 属性。

Keywords

CREATE, REPOSITORY

Best Practice

  1. 一个集群可以创建过多个仓库。只有拥有 ADMIN 权限的用户才能创建仓库。
  2. 任何用户都可以通过 SHOW REPOSITORIES 命令查看已经创建的仓库。
  3. 在做数据迁移操作时,需要在源集群和目的集群创建完全相同的仓库,以便目的集群可以通过这个仓库,查看到源集群备份的数据快照。