GBase 8a 节点替换

1、设置节点状态

gcadmin setnodestate 192.168.6.193 unavailable

2、删除被替换节点fevent

gcadmin rmfeventlog 192.168.6.193

3、获取当前distribution信息

gcadmin getdistribution 1 dis.xml

4、修改上一步生成的xml文件，将被替换节点的信息删除

5、复制一份gcChangeInfo.xml，修改如下，创建新的distribution

cp gcChangeInfo.xml new_gcChangeInfo.xml

# cat new_gcChangeInfo.xml

<?xml version="1.0" encoding="utf-8"?>

<servers>

    <cfgFile file="dis.xml"/>

</servers>

gcadmin distribution new_gcChangeInfo.xml

6、重分布数据

gbase>initnodedatamap;

gbase>rebalance instance;

gbase>select * from gclusterdb.rebalancing_status where status <> 'COMPLETED';

7、执行替换，复合节点分别替换，顺序不限

node节点如下：

./replace.py --host=10.10.3.119 --type=data --dbaUser=gbase --dbaUserPwd=gbase --generalDBUser=gbase --generalDBPwd=gbase20110531 --overwrite --license_file=20210611.lic

coor节点如下：

./replace.py --host=10.10.3.119 --type=coor --dbaUser=gbase --dbaUserPwd=gbase --generalDBUser=gbase --generalDBPwd=gbase20110531 --overwrite --license_file=20210611.lic

gcware节点如下：

$ /opt/gbase/10.10.3.149/gcware/gcware_server/gcserver.py -h

Usage: gcserver.py [options]

Options:

  -h, --help            show this help message and exit

  -a                    do not prompt the user for confirmation

  --prefix=INSTALLPREFIX

                        gcware installation directory

  --host=GCWAREHOST     replaced node(s) of gcware which splitting by comma

  --dbaUser=DBAUSER     dba user

  --dbaPwd=DBAPWD       dba user password

  --overwrite           new and complete overwrite

8、重分布数据

gbase>rebalance instance;

9、删除过渡distribution

gcadmin rmdistribution 2