1数据库操作与维护
1.1数据库启停
[root@OMMB-66-V10-001 ~]# service gcware stop Stopping GCMonit success! Signaling GCRECOVER (gcrecover) to terminate: [ OK ] Waiting for gcrecover services to unload:.....[ OK ] Signaling GCSYNC (gc_sync_server) to terminate: [ OK ] Waiting for gc_sync_server services to unload:.[ OK ] Signaling GCLUSTERD to terminate: [ OK ] Waiting for gclusterd services to unload:.........[ OK ] Signaling GBASED to terminate: [ OK ] Waiting for gbased services to unload:^[[A.........[ OK ] Signaling GCWARE (gcware) to terminate: [ OK ] Waiting for gcware services to unload:.[ OK ] [root@OMMB-66-V10-001 ~]# service gcware start Starting GCWARE (gcwexec): [ OK ] Starting GCMonit success! Starting GBASED : [ OK ] Starting GCLUSTERD : [ OK ] Starting GCSYNC : [ OK ] Starting GCRECOVER : [ OK ] [root@OMMB-66-V10-001 ~]# service gcware restart
1.2集群状态查询
[root@zdc3 zdcapp3]# gcadmin CLUSTER STATE: ACTIVE CLUSTER MODE: NORMAL =============================================================== | GBASE COORDINATOR CLUSTER INFORMATION | =============================================================== | NodeName | IpAddress |gcware |gcluster |DataState | --------------------------------------------------------------- | coordinator1 | 192.168.250.250 | OPEN | OPEN | 0 | --------------------------------------------------------------- | coordinator2 | 192.168.250.251 | OPEN | OPEN | 0 | --------------------------------------------------------------- | coordinator3 | 192.168.250.252 | OPEN | OPEN | 0 | --------------------------------------------------------------- =========================================================== | GBASE DATA CLUSTER INFORMATION | =========================================================== |NodeName | IpAddress |gnode |syncserver |DataState | ----------------------------------------------------------- | node1 | 192.168.250.250 | OPEN | OPEN | 0 | ----------------------------------------------------------- | node2 | 192.168.250.251 | OPEN | OPEN | 0 | ----------------------------------------------------------- | node3 | 192.168.250.252 | OPEN | OPEN | 0 | -----------------------------------------------------------
1.3进程状态查询
[root@zdc2 gbase]# service gcware status corosync (pid 3157) is running... gclusterd (pid 3966) is running... gcrecover (pid 4194) is running... gbased (pid 3271) is running... gc_sync_server (pid 3920) is running...
1.4GBase进程名
GBase协调节点/Coordinator node: gcluster进程名 : gclusterd gcware进程名 : corosync 自动回复进程名 : gcrecover GBase数据节点/Data node gnode进程名 : gbased syncserver进程名 : gcsync 监控工具 ： gcmonit / gcmmonit
2.数据库访问、信息查询
2.1命令行方式访问数据库
root、gbase用户本地访问 [root@zdc2 installGBase_v14.1]# gccli GBase client 8.6.2.20-R1.84277. Copyright (c) 2004-2017, GBase. All Rights Reserved. gbase> 非本地访问 [gbase@zdc2 ~]$ gccli -ugbase -pgbase20110531 -P5258 -h10.92.250.252 GBase client 8.6.2.20-R1.84277. Copyright (c) 2004-2017, GBase. All Rights Reserved. gbase> 如果需要直接访问gnode，查询gnode相关内容，请使用gncli命令 直接执行sql gccli -ugbase -ppassword -P5258 -h10.92.250.252 -vvv<‘/home/test.sql‘
2.2查询数据库节点，副本情况
gbase> show nodes; +------------+-----------------+-------+--------------+----------------+--------+-----------+ | Id | ip | name | primary part | duplicate part | status | datastate | +------------+-----------------+-------+--------------+----------------+--------+-----------+ | 4210731200 | 192.168.250.250 | node1 | n1 | n3 | online | 0 | | 4227508416 | 192.168.250.251 | node2 | n2 | n1 | online | 0 | | 4244285632 | 192.168.250.252 | node3 | n3 | n2 | online | 0 | +------------+-----------------+-------+--------------+----------------+--------+-----------+ 3 rows in set (Elapsed: 00:00:00.01)
2.3数据库版本查询
gbase> select @@version; +-------------------+ | @@version | +-------------------+ | 8.6.2.20-R1.84277 | +-------------------+ 1 row in set (Elapsed: 00:00:00.01)
2.4数据库参数查询与设置
gbase> show variables like ‘%heap%‘; +---------------------------+-----------+ | Variable_name | Value | +---------------------------+-----------+ | _gbase_enable_system_heap | OFF | | gbase_heap_data | 536870912 | | gbase_heap_large | 268435456 | | gbase_heap_temp | 268435456 | | max_heap_table_size | 16777216 | +---------------------------+-----------+ 5 rows in set (Elapsed: 00:00:00.00) gbase> set global gcluster_max_conn_in_pool=301; 全局参数 Query OK, 0 rows affected (Elapsed: 00:00:00.08) SET [GLOBAL | SESSION] <variablename> = value 丼例：开启本节点的trace日志，默认是设置session 变量。 SET gbase_sql_trace =on;
2.5加载数据文件
load data infile ‘ftp://gbase:gbase@disp_server//opt/1.txt,ftp://gbase:gbase@disp_server//opt/2.txt‘ into table test.tablename data_format 3 fields terminated by ‘#‘ table_fields ‘FIELD1,FIELD2,FIELD3‘ datetime format ‘%Y-%m-%d %H:%i:%S‘ 文件名中的#要用%23代替。
2.6常用的show语句
show databases; --查看系统中数据库名的语句（根据权限显示） show tables; --列出给定数据库的所有非临时表 desc test.t; --查看test库t表的列信息 show index from test.t; --查看test库t表的索引信息 show create table test.t; --查看test的建库语句 showcreateprocedurep_demo; --查看创建存储过程的语句 显示警告或错误信息： SHOW WARNINGS; --显示由最后一个语句产生的错误，警告和注意信息。 SHOW ERRORS; --显示由最后一个语句产生的错误信息。 显示集群中节点信息： SHOW NODES; --如果有SUPER 权限，可以看到所有节点信息。 SHOW LOCAL NODE; --显示集群中客户端正在访问节点的信息。
3.数据库故障定位
3.1查看错误日志
[root@zdc2 gbase]# gcadmin showddlevent 查看DDL语句错误日志 Event count:0 [root@zdc2 gbase]# gcadmin showdmlevent 查看DML语句错误日志 Event count:0 [root@zdc2 gbase]# gcadmin showdmlstorageevent 查看表数据损坏日志 Event count:0
3.2查看数据库锁情况
[root@zdc2 gbase]# gcadmin showlock +===============================================+ | GCLUSTER LOCK | +===============================================+ +---------+-----+-------+-----------+------+----+ |Lock name|owner|content|create time|orphan|type| +---------+-----+-------+-----------+------+----+ Total : 0 Lock name | owner | content | create time | orphan | type 库名.表名 |节点IP |锁的备注 | 上锁时间 |是否孤儿锁|锁类型（S/E) gbase> show processlist; 查看当前正在执行的gbase进程，如果有上锁的语句的话会打出语句 +-------+-----------------+-----------------------+---------+---------+-------+-----------------------------+------------------+ | Id | User | Host | db | Command | Time | State | Info | +-------+-----------------+-----------------------+---------+---------+-------+-----------------------------+------------------+ | 1 | event_scheduler | localhost | NULL | Daemon | 35728 | Waiting for next activation | NULL | | 46247 | root | 192.168.250.250:58468 | dap_etl | Sleep | 1 | | NULL | | 47119 | root | 192.168.250.250:9318 | dap_etl | Sleep | 27 | | NULL | | 47196 | root | 127.0.0.1:6824 | NULL | Query | 0 | NULL | show processlist | +-------+-----------------+-----------------------+---------+---------+-------+-----------------------------+------------------+ 4 rows in set (Elapsed: 00:00:00.00)