四、DMDSC

1、环境准备

### 1.1网络

```javascript
A(CentOSB)：ens33：192.168.100.103	ens37：192.168.200.103
B(CentOSC)：ens33：192.168.100.104	ens34：192.168.200.104

1.2共享磁盘

1.2.1新建磁盘

dcr:2G	
vote:2G
redo:10G
data:15G
arch:6G
1、图形化添加共享磁盘
2、命令行

//在虚拟机目录下，进行共享磁盘创建,例如：创建2G共享磁盘
D:\Program Files (x86)> .\vmware-vdiskmanager.exe -c -s 30G -a lsilogic -t 2 "D:\Work\WorkLinux\shell_DSC0\shared1.vmdk"

1.2.2修改虚拟机配置文件

编辑“.vmx”结尾文件(使用共享存储的各节点均需要添加)
scsi1.sharedBus = "virtual"
scsi1:0.deviceType = "disk"
disk.locking = "false"
diskLib.dataCacheMaxSize = "0"
diskLib.dataCacheMaxReadAheadSize = "0"
diskLib.dataCacheMinReadAheadSize = "0"
diskLib.dataCachePageSize = "4096"
diskLib.maxUnsyncedWrites = "0"
disk.EnableUUID = "TRUE"

1.2.3分区

使用root用户进入linux进行分区fdisk /dev/sdb
n新建分区 p打印查看分区 w写入磁盘并保存
最后使用命令 fdisk -l 或者使用 lsblk ，再次查看一下此时的分区，已经成功分成四个区

1.2.4修改配置文件

使用root用户修改，两台机器都要修改
vim /etc/udev/rules.d/88-dm-asmdevices.rules

ACTION=="add", KERNEL=="sdb1", RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="add", KERNEL=="sdb2", RUN+="/bin/raw /dev/raw/raw2 %N"
ACTION=="add", KERNEL=="sdb3", RUN+="/bin/raw /dev/raw/raw3 %N"
ACTION=="add", KERNEL=="sdb4", RUN+="/bin/raw /dev/raw/raw4 %N"
ACTION=="add", KERNEL=="raw[1-4]", OWNER="dmdba", GROUP="dinstall", MODE="0660"

1.2.5裸设备绑定

使用root用户修改，两台机器都要修改
udevadm control --reload-rules

systemctl restart systemd-udev-trigger.service
//udevadm trigger --type=devices --action=change

查看: ll /dev/raw/*

若查看不到就试试重启 reboot/shutdown -r now

2、部署

2.1 配置dmdcr_cfg.ini文件

两节点均配置:/dmdb/dmdata/config/dmdcr_cfg.ini

DCR_N_GRP = 3 #磁盘内多少个组
DCR_VTD_PATH = /dev/raw/raw2 #表决磁盘路径
DCR_OGUID = 230101 #消息标识   一般为当天日期

[GRP]
DCR_GRP_TYPE = CSS     #组类型
DCR_GRP_NAME = GRP_CSS #组名
DCR_GRP_N_EP = 2       #组内节点个数N, 最大值16
DCR_GRP_DSKCHK_CNT = 60 #磁盘心跳时间默认60s

[GRP_CSS]
DCR_EP_NAME = CSS0
DCR_EP_HOST = 192.168.200.103 #节点ip
DCR_EP_PORT = 9836            #节点监听端口号
[GRP_CSS]
DCR_EP_NAME = CSS1
DCR_EP_HOST = 192.168.200.104
DCR_EP_PORT = 9837          

[GRP] 
DCR_GRP_TYPE = ASM
DCR_GRP_NAME = GRP_ASM
DCR_GRP_N_EP = 2
DCR_GRP_DSKCHK_CNT = 60

[GRP_ASM]
DCR_EP_NAME = ASM0
DCR_EP_SHM_KEY = 64735
DCR_EP_SHM_SIZE = 128       
DCR_EP_HOST = 192.168.200.103
DCR_EP_PORT = 5836
DCR_EP_ASM_LOAD_PATH = /dev/raw 
[GRP_ASM]
DCR_EP_NAME = ASM1
DCR_EP_SHM_KEY = 54736
DCR_EP_SHM_SIZE = 128
DCR_EP_HOST = 192.168.200.104
DCR_EP_PORT = 5837
DCR_EP_ASM_LOAD_PATH = /dev/raw

[GRP]
DCR_GRP_TYPE = DB
DCR_GRP_NAME = GRP_DSC
DCR_GRP_N_EP = 2
DCR_GRP_DSKCHK_CNT = 60

[GRP_DSC]
DCR_EP_NAME = DSC0
DCR_EP_SEQNO = 0
DCR_EP_PORT = 5236
DCR_CHECK_PORT = 7436
[GRP_DSC]
DCR_EP_NAME = DSC1
DCR_EP_SEQNO = 1
DCR_EP_PORT = 5236
DCR_CHECK_PORT = 7437

2.2 初始化磁盘

一个节点执行
进入/dmdb/dmdbms/bin/执行：./dmasmcmd 或者：/dmdb/dmdbms/bin/dmasmcmd
然后再ASM下执行：
ASM>create dcrdisk '/dev/raw/raw1' 'dcr'
ASM>create votedisk '/dev/raw/raw2' 'vote'
ASM>create asmdisk '/dev/raw/raw3' 'LOG0'
ASM>create asmdisk '/dev/raw/raw4' 'DATA0'
ASM>init dcrdisk '/dev/raw/raw1' from '/dmdb/dmdata/config/dmdcr_cfg.ini' identified by '123456'
ASM>init votedisk '/dev/raw/raw2' from '/dmdb/dmdata/config/dmdcr_cfg.ini'

2.3 配置dmasvrmal.ini文件

两节点都要
vim /dmdb/dmdata/config/dmasvrmal.ini

[MAL_INST1]
MAL_INST_NAME     = ASM0
MAL_HOST          = 192.168.200.103
MAL_PORT          = 4836
[MAL_INST2]
MAL_INST_NAME     = ASM1
MAL_HOST          = 192.168.200.104
MAL_PORT          = 4837

2.4 配置dmdcr.ini文件

A节点:
DMDCR_PATH = /dev/raw/raw1
DMDCR_MAL_PATH =/dmdb/dmdata/config/dmasvrmal.ini            
DMDCR_SEQNO = 0
DMDCR_ASM_RESTART_INTERVAL = 0
DMDCR_ASM_STARTUP_CMD = /dmdb/dmdbms/bin/dmasmsvr dcr_ini=/dmdb/dmdata/config/dmdcr.ini
DMDCR_DB_RESTART_INTERVAL = 0
DMDCR_DB_STARTUP_CMD = /dmdb/dmdbms/bin/dmserver path=/dmdb/dmdata/config/dsc0_config/dm.ini dcr_ini=/dmdb/dmdata/config/dmdcr.ini

B节点:
DMDCR_PATH = /dev/raw/raw1
DMDCR_MAL_PATH =/dmdb/dmdata/config/dmasvrmal.ini            
DMDCR_SEQNO = 1
DMDCR_ASM_RESTART_INTERVAL = 0
DMDCR_ASM_STARTUP_CMD = /dmdb/dmdbms/bin/dmasmsvr dcr_ini=/dmdb/dmdata/config/dmdcr.ini
DMDCR_DB_RESTART_INTERVAL = 0
DMDCR_DB_STARTUP_CMD = /dmdb/dmdbms/bin/dmserver path=/dmdb/dmdata/config/dsc1_config/dm.ini dcr_ini=/dmdb/dmdata/config/dmdcr.ini

2.5 启动DMCSS、DMASM

节点1、2均启动：
cd /dmdb/bin
./dmcss dcr_ini=/dmdb/dmdata/config/dmdcr.ini
./dmasmsvr dcr_ini=/dmdb/dmdata/config/dmdcr.ini
或者：
注册服务脚本
cp service_template/DmCSSService DmCssService_DSC0
cp service_template/DmASMSvrService DmAsmService_DSC0
vim DmCssService_DSC0
vim DmAsmService_DSC0
./DmCssService_DSC0 start
./DmAsmService_DSC0 start

cp service_template/DmCSSService DmCssService_DSC1
cp service_template/DmASMSvrService DmAsmService_DSC1
vim DmCssService_DSC1
vim DmAsmService_DSC1
./DmCssService_DSC1 start
./DmAsmService_DSC1 start

2.6 创建DMASM磁盘组

在A机器上启动dmasmtool工具（一台机器上执行即可），创建DMASM磁盘组：
进入dmasmtool交互模式：
cd /dmdb/bin
./dmasmtool dcr_ini=/dmdb/dmdata/config/dmdcr.ini
在ASM下运行以下两条命令：
(1)创建日志磁盘组：create diskgroup 'DMLOG' asmdisk '/dev/raw/raw3'
(2)创建数据磁盘组：create diskgroup 'DMDATA' asmdisk '/dev/raw/raw4'

2.7 初始化实例

2.7.1创建dminit.ini文件

仅在A节点执行即可(个人搭建建议LOG_SIZE给小一点比如256，或者共享LOG0盘分大一点)
vim /dmdb/dmdata/config/dminit.ini

DB_NAME= dsc
SYSTEM_PATH= +DMDATA/data
SYSTEM= +DMDATA/data/dsc/system.dbf
SYSTEM_SIZE= 128
ROLL= +DMDATA/data/dsc/roll.dbf
ROLL_SIZE= 128
MAIN= +DMDATA/data/dsc/main.dbf
MAIN_SIZE= 128
CTL_PATH= +DMDATA/data/dsc/dm.ctl
LOG_SIZE= 1024
DCR_PATH= /dev/raw/raw1
DCR_SEQNO= 0
AUTO_OVERWRITE= 2
PAGE_SIZE = 32
EXTENT_SIZE = 16

[DSC0]
CONFIG_PATH=  /dmdb/dmdata/config/dsc0_config
PORT_NUM = 5236
MAL_HOST= 192.168.200.103
MAL_PORT= 6536
LOG_PATH= +DMLOG/log/DSC0_log1.log
LOG_PATH= +DMLOG/log/DSC0_log2.log
[DSC1]
CONFIG_PATH= /dmdb/dmdata/config/dsc1_config
PORT_NUM = 5236
MAL_HOST= 192.168.200.104
MAL_PORT= 6536
LOG_PATH= +DMLOG/log/DSC1_log1.log
LOG_PATH= +DMLOG/log/DSC1_log2.log

2.7.2初始化 dminit.ini

在 db0 节点执行初始化 dminit 命令：
./dminit control=/dmdb/dmdata/config/dminit.ini

2.7.3拷贝到db1节点

scp -r /dmdb/dmdata/config/dsc1_config dmdba@192.168.200.104:/dmdb/dmdata/config/

2.8 配置监视器

## A 机器、B 机器配置相同
vi /dmdb/dmdbms/bin/dmcssm.ini
CSSM_OGUID                 = 230101
CSSM_CSS_IP                = 192.168.200.103:9836
CSSM_CSS_IP                = 192.168.200.104:9837
CSSM_LOG_PATH              = /dmdb/dmdata/dmcssm_log
CSSM_LOG_FILE_SIZE         = 512
CSSM_LOG_SPACE_LIMIT       = 2048

//启动
./dmcssm INI_PATH=/dmdb/dmdbms/bin/dmcssm.ini

2.9 启动数据库服务

前台启动:
进入/dmdb/bin目录启动dsc01和dsc02
./dmserver path=/dmdb/dmdata/config/dsc0_config/dm.ini dcr_ini=/dmdb/dmdata/config/dmdcr.ini

./dmserver path=/dmdb/dmdata/config/dsc1_config/dm.ini dcr_ini=/dmdb/dmdata/config/dmdcr.ini
或者：
cp service_template/DmService ./DmService_DSC0
vim DmService_DSC0
./DmService_DSC0 start

cp service_template/DmService ./DmService_DSC1
vim DmService_DSC1
./DmService_DSC1 start

补充：修改DSC端口

使 用 DMASMCMD 工 具 export 出 备 份dmdcr_cfg_bak.ini

 ./dmasmcmd
(1)导出
Asm> export dcrdisk '/dev/raw/raw1' to '/dmdb/dmdata/config/edit_dsc0_config/dmdcr_cfg.ini'

(2)修改

(3)导入
Asm> import dcrdisk '/dmdb/dmdata/config/edit_dsc0_config/dmdcr_cfg.ini' to '/dev/raw/raw1'