更新时间:2023-09-13 GMT+08:00

批量获取数据库参数

功能介绍

在进行数据库迁移时,为了确保迁移成功后业务应用的使用不受影响,数据复制服务提供了参数对比功能帮助您进行源库和目标库参数一致性对比,此接口可以获取源库和目标库的数据库参数。

调试

您可以在API Explorer中调试该接口,支持自动认证鉴权。API Explorer可以自动生成SDK代码示例,并提供SDK代码示例调试功能。

接口约束

  • 目前仅MySQL迁移和MySQL灾备支持参数对比的功能。
  • job_direction为up时才能调用,任务状态为CONFIGURATION才能调用。
  • 双主灾备时父任务不支持。
  • 对于上述参数“innodb_buffer_pool_size”,参数对比功能对应用到目标数据库的值做了内控,最大不会超过目标数据库总内存的70%。所以有时候是无法完全和源数据库该参数取值一致,这是为了避免目标数据库设置过大,而导致数据库无法启动,如果您觉得上述最大值偏小,可以在数据库中通过执行命令手动设置更大的值,具体可参考参数对比详细介绍

URI

POST /v3/{project_id}/jobs/batch-get-params

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

租户在某一Region下的Project ID。

获取方法请参见获取项目ID

请求参数

表2 请求Header参数

参数

是否必选

参数类型

描述

Content-Type

String

指定类型为application/json。

缺省值:application/json

X-Auth-Token

String

从IAM服务获取的用户Token。

X-Language

String

请求语言类型。

缺省值:en-us

取值:

  • en-us
  • zh-cn
表3 请求Body参数

参数

是否必选

参数类型

描述

jobs

Array of strings

批量查询任务请求体。

refresh

String

是否重新获取数据库参数,1代表是,0代表否(从缓存中获取),第一次调用时请设置为1。

响应参数

状态码: 202

表4 响应Body参数

参数

参数类型

描述

params_list

Array of objects

查询数据库参数响应体。

详情请参见表5

count

Integer

总数。

表5 params_list字段数据结构说明

参数

参数类型

描述

params

Array of objects

数据参数信息体。

详情请参见表6

表6 params字段数据结构说明

参数

参数类型

描述

compare_result

String

参数对比结果。取值:

  • true
  • false

data_type

String

参数类型

group

String

分组。取值:

  • common:常规参数。
  • performance:性能参数。

key

String

参数名。

need_restart

String

是否需要重启。取值:

  • true
  • false

source_value

String

源数据库参数值。

target_value

String

目标数据库参数值。

value_range

String

参数范围。

error_code

String

错误码。

error_message

String

错误信息。

请求示例

批量获取数据库参数请求体示例:

https://{endpoint}/v3/054ba152d480d55b2f5dc0069e7ddef0/jobs/batch-get-params

{
  "jobs" : [ "140b5236-88ad-43c8-811c-1268453jb101" ],
  "refresh": 1
}

响应示例

状态码: 202

Accepted

{
  "count" : 1,
  "params_list" : [ {
    "params" : [ {
      "group" : "performance",
      "key" : "binlog_cache_size",
      "source_value" : "16384",
      "target_value" : "32768",
      "compare_result" : "false",
      "data_type" : "figure",
      "value_range" : "4096-16777216",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "binlog_stmt_cache_size",
      "source_value" : "32768",
      "target_value" : "32768",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "4096-16777216",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "bulk_insert_buffer_size",
      "source_value" : "8388608",
      "target_value" : "8388608",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "0-18446744073709551615",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "character_set_server",
      "source_value" : "utf8",
      "target_value" : "utf8",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "utf8|latin1|gbk|utf8mb4",
      "need_restart" : "true"
    }, {
      "group" : "common",
      "key" : "collation_server",
      "source_value" : "utf8_general_ci",
      "target_value" : "utf8_general_ci",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "latin1_german1_ci|latin1_swedish_ci|latin1_danish_ci|latin1_german2_ci|latin1_bin|latin1_general_ci|latin1_general_cs|latin1_spanish_ci|gbk_chinese_ci|gbk_bin|utf8_general_ci|utf8_bin|utf8_unicode_ci|utf8_icelandic_ci|utf8_latvian_ci|utf8_romanian_ci|utf8_slovenian_ci|utf8_polish_ci|utf8_estonian_ci|utf8_spanish_ci|utf8_swedish_ci|utf8_turkish_ci|utf8_czech_ci|utf8_danish_ci|utf8_lithuanian_ci|utf8_slovak_ci|utf8_spanish2_ci|utf8_roman_ci|utf8_persian_ci|utf8_esperanto_ci|utf8_hungarian_ci|utf8_sinhala_ci|utf8mb4_general_ci|utf8mb4_bin|utf8mb4_unicode_ci|utf8mb4_icelandic_ci|utf8mb4_latvian_ci|utf8mb4_romanian_ci|utf8mb4_slovenian_ci|utf8mb4_polish_ci|utf8mb4_estonian_ci|utf8mb4_spanish_ci|utf8mb4_swedish_ci|utf8mb4_turkish_ci|utf8mb4_czech_ci|utf8mb4_danish_ci|utf8mb4_lithuanian_ci|utf8mb4_slovak_ci|utf8mb4_spanish2_ci|utf8mb4_roman_ci|utf8mb4_persian_ci|utf8mb4_esperanto_ci|utf8mb4_hungarian_ci|utf8mb4_sinhala_ci",
      "need_restart" : "true"
    }, {
      "group" : "common",
      "key" : "connect_timeout",
      "source_value" : "10",
      "target_value" : "10",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "2-31536000",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "explicit_defaults_for_timestamp",
      "source_value" : "OFF",
      "target_value" : "OFF",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "ON|OFF",
      "need_restart" : "true"
    }, {
      "group" : "performance",
      "key" : "innodb_buffer_pool_size",
      "source_value" : "536870912",
      "target_value" : "536870912",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "5242880-2147483648",
      "need_restart" : "true"
    }, {
      "group" : "common",
      "key" : "innodb_flush_log_at_trx_commit",
      "source_value" : "1",
      "target_value" : "1",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "0|1|2",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "innodb_lock_wait_timeout",
      "source_value" : "50",
      "target_value" : "50",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "1-1073741824",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "key_buffer_size",
      "source_value" : "16777216",
      "target_value" : "16777216",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "8-9223372036854771712",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "long_query_time",
      "source_value" : "1.000000",
      "target_value" : "1.000000",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "0.03-3600",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "max_connections",
      "source_value" : "800",
      "target_value" : "800",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "1-100000",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "net_read_timeout",
      "source_value" : "30",
      "target_value" : "30",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "1-31536000",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "net_write_timeout",
      "source_value" : "60",
      "target_value" : "60",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "1-31536000",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "read_buffer_size",
      "source_value" : "262144",
      "target_value" : "262144",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "8192-2147479552",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "read_rnd_buffer_size",
      "source_value" : "524288",
      "target_value" : "524288",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "1-2147483647",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "sort_buffer_size",
      "source_value" : "262144",
      "target_value" : "262144",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "32768-18446744073709551615",
      "need_restart" : "false"
    }, {
      "group" : "performance",
      "key" : "sync_binlog",
      "source_value" : "1",
      "target_value" : "1",
      "compare_result" : "true",
      "data_type" : "figure",
      "value_range" : "0-4294967295",
      "need_restart" : "false"
    }, {
      "group" : "common",
      "key" : "tx_isolation",
      "source_value" : "REPEATABLE-READ",
      "target_value" : "REPEATABLE-READ",
      "compare_result" : "true",
      "data_type" : null,
      "value_range" : "READ-UNCOMMITTED|READ-COMMITTED|REPEATABLE-READ|SERIALIZABLE",
      "need_restart" : "false"
    } ]
  } ]
}

状态码

状态码

描述

202

Accepted

400

Bad Request

错误码

请参见错误码