- 关于MogDB
- 快速入门
- 安装指南
- 管理指南
- 日常运维
- 主备管理
- MOT内存表管理
- 列存表管理
- 备份与恢复
- 数据导出导入
- 升级指南
- 常见故障处理指南
- 常见故障定位手段
- 常见故障定位案例
- core问题定位
- TPCC运行时,注入磁盘满故障,TPCC卡住的问题
- 备机处于need repair(WAL)状态问题
- 内存不足问题
- 服务启动失败
- 出现“Error:No space left on device”提示
- 在XFS文件系统中,使用du命令查询数据文件大小大于文件实际大小
- 在XFS文件系统中,出现文件损坏
- switchover操作时,主机降备卡住
- 磁盘空间达到阈值,数据库只读
- 分析查询语句长时间运行的问题
- 分析查询语句运行状态
- 强制结束指定的问题会话
- 分析查询语句是否被阻塞
- 分析查询效率异常降低的问题
- 执行 SQL 语句时,提示 Lock wait timeout
- VACUUM FULL一张表后,表文件大小无变化
- 执行修改表分区操作时报错
- 不同用户查询同表显示数据不同
- 修改索引时只调用索引名提示索引不存在
- 重建索引失败
- 业务运行时整数转换错
- 高并发报错”too many clients already”或无法创建线程
- btree 索引故障情况下应对策略
- 安全指南
- 性能优化指南
- 开发者指南
- 应用程序开发教程
- 开发规范
- 基于JDBC开发
- 概述
- JDBC包、驱动类和环境类
- 开发流程
- 加载驱动
- 连接数据库
- 连接数据库(以SSL方式)
- 执行SQL语句
- 处理结果集
- 关闭连接
- 示例:常用操作
- 示例:重新执行应用SQL
- 示例:通过本地文件导入导出数据
- 示例:从MY向MogDB进行数据迁移
- 示例:逻辑复制代码示例
- JDBC接口参考
- java.sql.Connection
- java.sql.CallableStatement
- java.sql.DatabaseMetaData
- java.sql.Driver
- java.sql.PreparedStatement
- java.sql.ResultSet
- java.sql.ResultSetMetaData
- java.sql.Statement
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- javax.sql.PooledConnection
- javax.naming.Context
- javax.naming.spi.InitialContextFactory
- CopyManager
- 基于ODBC开发
- 基于libpq开发
- 调试
- 附录
- 存储过程
- 用户自定义函数
- 自治事务
- 逻辑复制
- Foreign Data Wrapper
- 物化视图
- AI特性
- 应用程序开发教程
- 参考指南
- 系统表及系统视图
- 系统表和系统视图概述
- 系统表
- GS_AUDITING_POLICY
- GS_AUDITING_POLICY_ACCESS
- GS_AUDITING_POLICY_FILTERS
- GS_AUDITING_POLICY_PRIVILEGES
- GS_CLIENT_GLOBAL_KEYS
- GS_CLIENT_GLOBAL_KEYS_ARGS
- GS_COLUMN_KEYS
- GS_COLUMN_KEYS_ARGS
- GS_ENCRYPTED_COLUMNS
- GS_MASKING_POLICY
- GS_MASKING_POLICY_ACTIONS
- GS_MASKING_POLICY_FILTERS
- GS_MATVIEW
- GS_MATVIEW_DEPENDENCY
- GS_OPT_MODEL
- GS_POLICY_LABEL
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_PLAN_ENCODING_TABLE
- GS_WLM_PLAN_OPERATOR_INFO
- GS_WLM_EC_OPERATOR_INFO
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_APP_WORKLOADGROUP_MAPPING
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_DIRECTORY
- PG_ENUM
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOB
- PG_JOB_PROC
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_RANGE
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_RLSPOLICY
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_GROUP
- PLAN_TABLE_DATA
- STATEMENT_HISTORY
- 系统视图
- GS_AUDITING
- GS_AUDITING_ACCESS
- GS_AUDITING_PRIVILEGE
- GS_CLUSTER_RESOURCE_INFO
- GS_INSTANCE_TIME
- GS_LABELS
- GS_MASKING
- GS_MATVIEWS
- GS_SESSION_MEMORY
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_CONTEXT
- GS_SESSION_MEMORY_DETAIL
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_WLM_CGROUP_INFO
- GS_WLM_PLAN_OPERATOR_HISTORY
- GS_WLM_REBUILD_USER_RESOURCE_POOL
- GS_WLM_RESOURCE_POOL
- GS_WLM_USER_INFO
- GS_STAT_SESSION_CU
- GS_TOTAL_MEMORY_DETAIL
- MPP_TABLES
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_COMM_DELAY
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_COMM_STATUS
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_GTT_RELSTATS
- PG_GTT_STATS
- PG_GTT_ATTACHED_PIDS
- PG_INDEXES
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_REPLICATION_SLOTS
- PG_RLSPOLICIES
- PG_ROLES
- PG_RULES
- PG_SECLABELS
- PG_SETTINGS
- PG_SHADOW
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_TABLES
- PG_TDE_INFO
- PG_THREAD_WAIT_STATUS
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_USER_RESOURCE_INFO
- PG_TOTAL_USER_RESOURCE_INFO_OID
- PG_USER
- PG_USER_MAPPINGS
- PG_VARIABLE_INFO
- PG_VIEWS
- PLAN_TABLE
- GS_FILE_STAT
- GS_OS_RUN_INFO
- GS_REDO_STAT
- GS_SESSION_STAT
- GS_SESSION_TIME
- GS_THREAD_MEMORY_CONTEXT
- 系统函数
- 支持的数据类型
- SQL语法
- ABORT
- ALTER AGGREGATE
- ALTER AUDIT POLICY
- ALTER DATABASE
- ALTER DATA SOURCE
- ALTER DEFAULT PRIVILEGES
- ALTER DIRECTORY
- ALTER EXTENSION
- ALTER FOREIGN TABLE
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LANGUAGE
- ALTER LARGE OBJECT
- ALTER MASKING POLICY
- ALTER MATERIALIZED VIEW
- ALTER OPERATOR
- ALTER RESOURCE LABEL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER RULE
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER SYSTEM SET
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TABLESPACE
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER USER MAPPING
- ALTER VIEW
- ANALYZE | ANALYSE
- BEGIN
- CALL
- CHECKPOINT
- CLOSE
- CLUSTER
- COMMENT
- COMMIT | END
- COMMIT PREPARED
- COPY
- CREATE AGGREGATE
- CREATE AUDIT POLICY
- CREATE CAST
- CREATE CLIENT MASTER KEY
- CREATE COLUMN ENCRYPTION KEY
- CREATE DATABASE
- CREATE DATA SOURCE
- CREATE DIRECTORY
- CREATE EXTENSION
- CREATE FOREIGN TABLE
- CREATE FUNCTION
- CREATE GROUP
- CREATE INCREMENTAL MATERIALIZED VIEW
- CREATE INDEX
- CREATE LANGUAGE
- CREATE MASKING POLICY
- CREATE MATERIALIZED VIEW
- CREATE OPERATOR
- CREATE ROW LEVEL SECURITY POLICY
- CREATE PROCEDURE
- CREATE RESOURCE LABEL
- CREATE ROLE
- CREATE RULE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TABLESPACE
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE USER MAPPING
- CREATE VIEW
- CURSOR
- DEALLOCATE
- DECLARE
- DELETE
- DO
- DROP AGGREGATE
- DROP AUDIT POLICY
- DROP CAST
- DROP CLIENT MASTER KEY
- DROP COLUMN ENCRYPTION KEY
- DROP DATABASE
- DROP DATA SOURCE
- DROP DIRECTORY
- DROP EXTENSION
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP LANGUAGE
- DROP MASKING POLICY
- DROP MATERIALIZED VIEW
- DROP OPERATOR
- DROP OWNED
- DROP RESOURCE LABEL
- DROP ROW LEVEL SECURITY POLICY
- DROP PROCEDURE
- DROP ROLE
- DROP RULE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SYNONYM
- DROP TABLE
- DROP TABLESPACE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP USER MAPPING
- DROP VIEW
- EXECUTE
- EXPLAIN
- EXPLAIN PLAN
- FETCH
- GRANT
- INSERT
- LOCK
- MOVE
- MERGE INTO
- PREPARE
- PREPARE TRANSACTION
- REASSIGN OWNED
- REFRESH INCREMENTAL MATERIALIZED VIEW
- REFRESH MATERIALIZED VIEW
- REINDEX
- RELEASE SAVEPOINT
- RESET
- REVOKE
- ROLLBACK
- ROLLBACK PREPARED
- ROLLBACK TO SAVEPOINT
- SAVEPOINT
- SELECT
- SELECT INTO
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SET TRANSACTION
- SHOW
- SHUTDOWN
- START TRANSACTION
- TRUNCATE
- UPDATE
- VACUUM
- VALUES
- SQL参考
- GUC参数说明
- Information Schema
- DBE_PERF
- 概述
- OS
- Instance
- Memory
- File
- Object
- STAT_USER_TABLES
- SUMMARY_STAT_USER_TABLES
- GLOBAL_STAT_USER_TABLES
- STAT_USER_INDEXES
- SUMMARY_STAT_USER_INDEXES
- GLOBAL_STAT_USER_INDEXES
- STAT_SYS_TABLES
- SUMMARY_STAT_SYS_TABLES
- GLOBAL_STAT_SYS_TABLES
- STAT_SYS_INDEXES
- SUMMARY_STAT_SYS_INDEXES
- GLOBAL_STAT_SYS_INDEXES
- STAT_ALL_TABLES
- SUMMARY_STAT_ALL_TABLES
- GLOBAL_STAT_ALL_TABLES
- STAT_ALL_INDEXES
- SUMMARY_STAT_ALL_INDEXES
- GLOBAL_STAT_ALL_INDEXES
- STAT_DATABASE
- SUMMARY_STAT_DATABASE
- GLOBAL_STAT_DATABASE
- STAT_DATABASE_CONFLICTS
- SUMMARY_STAT_DATABASE_CONFLICTS
- GLOBAL_STAT_DATABASE_CONFLICTS
- STAT_XACT_ALL_TABLES
- SUMMARY_STAT_XACT_ALL_TABLES
- GLOBAL_STAT_XACT_ALL_TABLES
- STAT_XACT_SYS_TABLES
- SUMMARY_STAT_XACT_SYS_TABLES
- GLOBAL_STAT_XACT_SYS_TABLES
- STAT_XACT_USER_TABLES
- SUMMARY_STAT_XACT_USER_TABLES
- GLOBAL_STAT_XACT_USER_TABLES
- STAT_XACT_USER_FUNCTIONS
- SUMMARY_STAT_XACT_USER_FUNCTIONS
- GLOBAL_STAT_XACT_USER_FUNCTIONS
- STAT_BAD_BLOCK
- SUMMARY_STAT_BAD_BLOCK
- GLOBAL_STAT_BAD_BLOCK
- STAT_USER_FUNCTIONS
- SUMMARY_STAT_USER_FUNCTIONS
- GLOBAL_STAT_USER_FUNCTIONS
- Workload
- Session/Thread
- SESSION_STAT
- GLOBAL_SESSION_STAT
- SESSION_TIME
- GLOBAL_SESSION_TIME
- SESSION_MEMORY
- GLOBAL_SESSION_MEMORY
- SESSION_MEMORY_DETAIL
- GLOBAL_SESSION_MEMORY_DETAIL
- SESSION_STAT_ACTIVITY
- GLOBAL_SESSION_STAT_ACTIVITY
- THREAD_WAIT_STATUS
- GLOBAL_THREAD_WAIT_STATUS
- LOCAL_THREADPOOL_STATUS
- GLOBAL_THREADPOOL_STATUS
- SESSION_CPU_RUNTIME
- SESSION_MEMORY_RUNTIME
- STATEMENT_IOSTAT_COMPLEX_RUNTIME
- Transaction
- Query
- STATEMENT
- SUMMARY_STATEMENT
- STATEMENT_COUNT
- GLOBAL_STATEMENT_COUNT
- SUMMARY_STATEMENT_COUNT
- GLOBAL_STATEMENT_COMPLEX_HISTORY
- GLOBAL_STATEMENT_COMPLEX_HISTORY_TABLE
- GLOBAL_STATEMENT_COMPLEX_RUNTIME
- STATEMENT_RESPONSETIME_PERCENTILE
- STATEMENT_USER_COMPLEX_HISTORY
- STATEMENT_COMPLEX_RUNTIME
- STATEMENT_COMPLEX_HISTORY_TABLE
- STATEMENT_COMPLEX_HISTORY
- STATEMENT_WLMSTAT_COMPLEX_RUNTIME
- STATEMENT_HISTORY
- Cache/IO
- STATIO_USER_TABLES
- SUMMARY_STATIO_USER_TABLES
- GLOBAL_STATIO_USER_TABLES
- STATIO_USER_INDEXES
- SUMMARY_STATIO_USER_INDEXES
- GLOBAL_STATIO_USER_INDEXES
- STATIO_USER_SEQUENCES
- SUMMARY_STATIO_USER_SEQUENCES
- GLOBAL_STATIO_USER_SEQUENCES
- STATIO_SYS_TABLES
- SUMMARY_STATIO_SYS_TABLES
- GLOBAL_STATIO_SYS_TABLES
- STATIO_SYS_INDEXES
- SUMMARY_STATIO_SYS_INDEXES
- GLOBAL_STATIO_SYS_INDEXES
- STATIO_SYS_SEQUENCES
- SUMMARY_STATIO_SYS_SEQUENCES
- GLOBAL_STATIO_SYS_SEQUENCES
- STATIO_ALL_TABLES
- SUMMARY_STATIO_ALL_TABLES
- GLOBAL_STATIO_ALL_TABLES
- STATIO_ALL_INDEXES
- SUMMARY_STATIO_ALL_INDEXES
- GLOBAL_STATIO_ALL_INDEXES
- STATIO_ALL_SEQUENCES
- SUMMARY_STATIO_ALL_SEQUENCES
- GLOBAL_STATIO_ALL_SEQUENCES
- GLOBAL_STAT_DB_CU
- GLOBAL_STAT_SESSION_CU
- Utility
- REPLICATION_STAT
- GLOBAL_REPLICATION_STAT
- REPLICATION_SLOTS
- GLOBAL_REPLICATION_SLOTS
- BGWRITER_STAT
- GLOBAL_BGWRITER_STAT
- GLOBAL_CKPT_STATUS
- GLOBAL_DOUBLE_WRITE_STATUS
- GLOBAL_PAGEWRITER_STATUS
- GLOBAL_RECORD_RESET_TIME
- GLOBAL_REDO_STATUS
- GLOBAL_RECOVERY_STATUS
- CLASS_VITAL_INFO
- USER_LOGIN
- SUMMARY_USER_LOGIN
- GLOBAL_GET_BGWRITER_STATUS
- Lock
- Wait Events
- Configuration
- Operator
- Workload Manager
- Global Plancache
- 附录
- 工具参考
- 数据库报错信息
- SQL标准错误码说明
- 第三方库错误码说明
- GAUSS-00001 - GAUSS-00100
- GAUSS-00101 - GAUSS-00200
- GAUSS 00201 - GAUSS 00300
- GAUSS 00301 - GAUSS 00400
- GAUSS 00401 - GAUSS 00500
- GAUSS 00501 - GAUSS 00600
- GAUSS 00601 - GAUSS 00700
- GAUSS 00701 - GAUSS 00800
- GAUSS 00801 - GAUSS 00900
- GAUSS 00901 - GAUSS 01000
- GAUSS 01001 - GAUSS 01100
- GAUSS 01101 - GAUSS 01200
- GAUSS 01201 - GAUSS 01300
- GAUSS 01301 - GAUSS 01400
- GAUSS 01401 - GAUSS 01500
- GAUSS 01501 - GAUSS 01600
- GAUSS 01601 - GAUSS 01700
- GAUSS 01701 - GAUSS 01800
- GAUSS 01801 - GAUSS 01900
- GAUSS 01901 - GAUSS 02000
- GAUSS 02001 - GAUSS 02100
- GAUSS 02101 - GAUSS 02200
- GAUSS 02201 - GAUSS 02300
- GAUSS 02301 - GAUSS 02400
- GAUSS 02401 - GAUSS 02500
- GAUSS 02501 - GAUSS 02600
- GAUSS 02601 - GAUSS 02700
- GAUSS 02701 - GAUSS 02800
- GAUSS 02801 - GAUSS 02900
- GAUSS 02901 - GAUSS 03000
- GAUSS 03001 - GAUSS 03100
- GAUSS 03101 - GAUSS 03200
- GAUSS 03201 - GAUSS 03300
- GAUSS 03301 - GAUSS 03400
- GAUSS 03401 - GAUSS 03500
- GAUSS 03501 - GAUSS 03600
- GAUSS 03601 - GAUSS 03700
- GAUSS 03701 - GAUSS 03800
- GAUSS 03801 - GAUSS 03900
- GAUSS 03901 - GAUSS 04000
- GAUSS 04001 - GAUSS 04100
- GAUSS 04101 - GAUSS 04200
- GAUSS 04201 - GAUSS 04300
- GAUSS 04301 - GAUSS 04400
- GAUSS 04401 - GAUSS 04500
- GAUSS 04501 - GAUSS 04600
- GAUSS 04601 - GAUSS 04700
- GAUSS 04701 - GAUSS 04800
- GAUSS 04801 - GAUSS 04900
- GAUSS 04901 - GAUSS 05000
- GAUSS 05001 - GAUSS 05100
- GAUSS 05101 - GAUSS 05200
- GAUSS 05201 - GAUSS 05300
- GAUSS 05301 - GAUSS 05400
- GAUSS 05401 - GAUSS 05500
- GAUSS 05501 - GAUSS 05600
- GAUSS 05601 - GAUSS 05700
- GAUSS 05701 - GAUSS 05800
- GAUSS 05801 - GAUSS 05900
- GAUSS 05901 - GAUSS 06000
- GAUSS 06001 - GAUSS 06100
- GAUSS 06101 - GAUSS 06200
- GAUSS 06201 - GAUSS 06300
- GAUSS 06301 - GAUSS 06400
- GAUSS 06401 - GAUSS 06500
- GAUSS 06501 - GAUSS 06600
- GAUSS 06601 - GAUSS 06700
- GAUSS 06701 - GAUSS 06800
- GAUSS 06801 - GAUSS 06900
- GAUSS 06901 - GAUSS 07000
- GAUSS 07001 - GAUSS 07100
- GAUSS 07101 - GAUSS 07200
- GAUSS 07201 - GAUSS 07300
- GAUSS 07301 - GAUSS 07400
- GAUSS 07401 - GAUSS 07480
- GAUSS 50000 - GAUSS 50999
- GAUSS 51000 - GAUSS 51999
- GAUSS 52000 - GAUSS 52999
- GAUSS 53000 - GAUSS 53699
- 系统表及系统视图
- 常见问题解答 (FAQs)
- 术语表
部署运维FAQs
初始化环境FAQs
Q1: clusterconfig.xml
示例配置文件需要修改哪些参数?
需要修改机器名和IP地址。
<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
<!-- MogDB整体信息 -->
<CLUSTER>
<PARAM name="clusterName" value="dbCluster" />
<PARAM name="nodeNames" value="mogdb-kernel-0002" />
<PARAM name="backIp1s" value="172.16.0.245"/>
<PARAM name="gaussdbAppPath" value="/opt/mogdb/app" />
<PARAM name="gaussdbLogPath" value="/opt/mogdb/mogdb_log/omm" />
<PARAM name="gaussdbToolPath" value="/opt/mogdb/tool" />
<PARAM name="corePath" value="/opt/mogdb/corefile"/>
<PARAM name="clusterType" value="single-inst"/>
</CLUSTER>
<!-- 每台服务器上的节点部署信息 -->
<DEVICELIST>
<!-- mogdb-kernel-0002上的节点部署信息 -->
<DEVICE sn="1000001">
<PARAM name="name" value="mogdb-kernel-0002"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="172.16.0.245"/>
<PARAM name="sshIp1" value="172.16.0.245"/>
<!--dbnode-->
<PARAM name="dataNum" value="1"/>
<PARAM name="dataPortBase" value="26000"/>
<PARAM name="dataNode1" value="/mogdb/data/db1"/>
</DEVICE>
</DEVICELIST>
</ROOT>
初始化脚本FAQs
Q2: 当提示配置文件参数值与系统环境变量值不相符怎么办?
Failed to check the preinstall repeat condition.gaussdbToolPath [/opt/enmo/wisery] is not same with environment [/opt/mogdb/tool]
将clusterconfig.xml
文件里gaussdbToolPath
的值改为/opt/mogdb/tool
。
说明:
- 出现此类问题,主要是因为系统之前安装过MogDB,环境可能未清理干净,所以会产生配置文件参数值与系统环境变量值不相符的情况,将导致执行失败。将
clusterconfig.xml
配置文件中报错参数的值改为和环境变量文件参数值相同即可。- 在
omm
用户下执行vi ~/.bashrc
可查看环境变量。
Q3: 当提示无权限执行该命令,怎么办?
Fixing server package owner.
[GAUSS-51400] : Failed to execute the command: su - omm -c 'cd '/opt/software/mogdb/''. Error:
-bash: line 0: cd: /opt/software/mogdb/: Permission denied
执行chmod 755 -R /opt/software
为该目录赋予权限后,再重新执行脚本初始化命令。
Q4: 当符号链接创建失败怎么办?
In:failed to create symbolic link 'usr/bin/python3': File exists
将usr/bin/
目录下的python3
删掉,重新执行In
命令。
Q5: 当提示主机名不在集群中时怎么办?
GAUSS-51619: "The host name [host-172-16-0-195] is not in the cluster."
这是因为机器实际的名称是host-172-16-0-195
,而不是mogdb-kernel-0006
,所以需要将clusterconfig.xml
里的节点名称改为host-172-16-0-195
。
Q6: 当出现如下报错时,怎么办?
[GAUSS-50202]:The /opt/mogdb must be empty. Or user [omm] has write permission to directory /opt/mogdb. Because it will create symbolic link [/opt/mogdb/app] to install path [/opt/mogdb/app_e0e9f58d] in gs_install process with this user.
在omm
用户下,执行vi ~/.bashrc
,将环境变量清空,重新执行初始化脚本即可成功。
Q7: 当出现如下有关依赖包的报错时,怎么办?
/opt/software/mogdb/bin/mogdb: error while loading shared libraries: libnsl.so.1: cannot open shared object file: No such file or directory
no data was returned by command ""/opt/software/mogdb/bin/mogdb" -V"
The program "mogdb" is needed by gs_initdb but was not found in the
same directory as "/opt/software/mogdb/bin/gs_initdb".
Check your installation.
重新安装依赖包libnsl*即可。
安装FAQs
Q8: 当提示集群已安装怎么办?
[GAUSS-51400] : Failed to execute the command: source /home/omm/.bashrc;python3 '/opt/mogdb/tool/script/local/CheckInstall.py' -U omm:dbgrp -R /opt/mogdb/app -l /opt/mogdb/mogdb_log/omm/omm/om/gs_local.log -X /opt/software/mogdb/clusterconfig.xml.Error:
Checking old installation.
[GAUSS-51806] : The cluster has been installed.
执行vi ~/.bashrc
查看环境变量,将GAUSS_ENV=2
改为GAUSS_ENV=1
,重新执行安装命令即可。
Q9: 当执行安装命令报如下错误怎么办?
[GAUSS-51400] : Failed to execute the command: source /home/omm/.bashrc;python3 '/opt/mogdb/tool/script/local/CheckInstall.py' -U omm:dbgrp -R /opt/mogdb/app -l /opt/mogdb/mogdb_log/omm/omm/om/gs_local.log -X /opt/software/mogdb/clusterconfig.xml.Error:
Checking old installation.
Successfully checked old installation.
Checking SHA256.
Successfully checked SHA256.
Checking kernel parameters.
Successfully checked kernel parameters.
Checking directory.
[GAUSS-50202] : The /opt/mogdb/app_b75b585a must be empty.
在root
用户下,进入/opt/mogdb/app_b75b585a
目录,执行rm -rf *
将目录下所有文件删除,重新执行安装命令即可。
Q10: 当错误提示socket被占用怎么办?
[GAUSS-50200] : The socket file already exists. Port:26000.
将clusterconfig.xml
文件里的dataPortBase
值改为一个可用的端口即可。
部署后FAQs
gs_om -t start启动数据库失败:"在标准安装后,通过hostnamectl set修改主机名"
适用于:
-
MogDB 1.1.0
-
MogDB 2.0.0
-
MogDB 2.0.1
-
MogDB 单机数据库
本文档中的信息适用于x86平台。
症状:
在标准安装结束后(单机),通过hostnamectl set
修改主机名,执行gs_om -t start
命令数据库启动失败。
例如:
-
在
root
用户下通过hostnamectl set
将主机名mogdb-kernel-0005
修改为www.mogdb.com
。[root@mogdb-kernel-0005 ~]# hostnamectl Static hostname: mogdb-kernel-0005 Icon name: computer-vm Chassis: vm Machine ID: de03a5f3bf5a4b7e9df939c9dc5b428d Boot ID: 828bfbe948ed4de7aff2a059103a0eaa Virtualization: kvm Operating System: CentOS Linux 7 (Core) CPE OS Name: cpe:/o:centos:centos:7 Kernel: Linux 3.10.0-1160.15.2.el7.x86_64 Architecture: x86-64 [root@mogdb-kernel-0005 ~]# id uid=0(root) gid=0(root) groups=0(root) [root@mogdb-kernel-0005 ~]# hostname mogdb-kernel-0005 [root@mogdb-kernel-0005 ~]# hostnamectl set-hostname www.mogdb.com
-
在任意用户下执行如下命令查看是否主机名修改成功。
[root@mogdb-kernel-0005 ~]# hostname www.mogdb.com
-
在
omm
用户下执行如下命令停止数据库。[root@mogdb-kernel-0005 ~]# su - omm Last login: Tue Jul 27 11:18:16 CST 2021 on pts/1 [omm@www ~]$ gs_ctl stop -D /mogdb/data/db1 [2021-07-27 11:19:20.283][32166][][gs_ctl]: gs_ctl stopped ,datadir is /mogdb/data/db1 waiting for server to shut down.... done server stopped
-
在
omm
用户下执行如下命令启动数据库。[omm@www ~]$ gs_om -t start Starting cluster. ========================================= ========================================= [GAUSS-53600]: Can not start the database, the cmd is source /home/omm/.bashrc; python3 '/opt/enmo/wisequery/script/local/StartInstance.py' -U omm -R /opt/mogdb/app -t 300 --security-mode=off, Error: [GAUSS-51400] : Failed to execute the command: source /home/omm/.bashrc; python3 '/opt/enmo/wisequery/script/local/StartInstance.py' -U omm -R /opt/mogdb/app -t 300 --security-mode=off. Error: [FAILURE] mogdb-kernel-0005
目的:
在标准安装结束后(单机),通过modip.py
脚本修改主机名,执行gs_om -t start
命令,数据库启动成功。
故障解决步骤:
-
以
omm
用户创建modip.py
脚本文件。[omm@www ~]$ cd [omm@www ~]$ pwd /home/omm [omm@www ~]$ vi modip.py # -*- coding:utf-8 -*- import sys ##sys.path.append(r'$GPHOME/script/') sys.path.append(r'/opt/enmo/wisequery/script/') from gspylib.common.DbClusterInfo import dbClusterInfo oldIP = '172.16.0.176' newIP = '172.16.0.176' oldnodename = 'mogdb-kernel-0005' newnodename = 'www.mogdb.com' ##Output file directory tmpDir = r'/home/omm' dbuser = 'omm' c1=dbClusterInfo() c1.initFromStaticConfig(dbuser) for node in c1.dbNodes: if node.backIps[0] == oldIP: node.backIps[0] = newIP if len(node.virtualIp): if node.virtualIp[0] == oldIP: node.virtualIp[0] = newIP if node.name == oldnodename: node.name = newnodename if node.sshIps[0] == oldIP: node.sshIps[0] = newIP for dn in node.datanodes: if dn.listenIps[0] == oldIP: dn.listenIps[0] = newIP if dn.haIps[0] == oldIP: dn.haIps[0] = newIP for peerdn in dn.peerInstanceInfos: if len(peerdn.peerHAIPs): if peerdn.peerHAIPs[0] == oldIP: peerdn.peerHAIPs[0] = newIP for node in c1.dbNodes: staticConfigPath_dn = "%s/cluster_static_config_%s" % (tmpDir, node.name) c1.saveToStaticConfig(staticConfigPath_dn, node.id) print(staticConfigPath_dn)
说明: 需根据实际情况,修改主机IP地址和主机名。例如,在本示例中,主机IP地址为
172.16.0.176
,旧主机名为mogdb-kernel-0005
,新主机名为www.mogdb.com
。 -
执行如下命令生成集群静态配置文件。
[omm@www ~]$ python3 modip.py
回显如下即执行成功。
/home/omm/cluster_static_config_www.mogdb.com
-
执行如下命令替换源文件。
[omm@www ~]$ mv /opt/mogdb/app/bin/cluster_static_config /opt/mogdb/app/bin/cluster_static_config_mogdb.com [omm@www ~]$ cp /home/omm/cluster_static_config_www.mogdb.com /opt/mogdb/app/bin/cluster_static_config
-
执行如下命令启动数据库。
[omm@www ~]$ gs_om -t start Starting cluster. ========================================= [SUCCESS] www.mogdb.com 2021-07-26 16:20:42.938 60fe7056.1 [unknown] 139667408496384 [unknown] 0 dn_6001 01000 0 [BACKEND] WARNING: could not create any HA TCP/IP sockets ========================================= Successfully started.