# install
## prepare

### user and group
```bash
groupadd dinstall -g 2001
useradd  -G dinstall -m -d /home/dmdba -s /bin/bash -u 2001 dmdba
passwd dmdba
```

### limit

```bash
vi /etc/security/limits.conf
```

```limits.conf
dmdba  soft      nice       0 
dmdba  hard      nice       0 
dmdba  soft      as         unlimited 
dmdba  hard      as         unlimited 
dmdba  soft      fsize      unlimited 
dmdba  hard      fsize      unlimited 
dmdba  soft      nproc      65536 
dmdba  hard      nproc      65536 
dmdba  soft      nofile     65536 
dmdba  hard      nofile     65536 
dmdba  soft      core       unlimited 
dmdba  hard      core       unlimited 
dmdba  soft      data       unlimited 
dmdba  hard      data       unlimited
```

restart

```bash
restart
```

check
```bash
su - dmdba
ulimit -a
```

### database directories

```bash
mkdir /opt/dmdata
chown dmdba:dinstall /opt/dmdata
mkdir data arch backup
chown dmdba:dinstall data
chown dmdba:dinstall arch
chown dmdba:dinstall backup
chmod 755 data
chmod 755 arch
chmod 755 backup
```

## mount iso

```bash
cd /opt
mkdir iso
mount -o loop dm8_20240712_HWarm920_kylin10_64.iso /opt/iso
```

## command line install

```bash
cd /opt/iso
./DMInstall.bin -i
```

按需求选择安装语言，
没有 key 文件选择 "n"，
时区按需求选择一般选择 “21”，
安装类型选择“1”，
安装目录按实际情况配置，这里示例使用默认安装位置 /home/dmdba/dmdbms

### execute as root
```bash
/home/dmdba/dmdbms/script/root/root_installer.sh
```


## dmdba env

```bash
su - dmdba
cd /home/dmdba
vim .bash_profile
```

```.bash_profile
export DM_HOME=/home/dmdba/dmdbms
export LD_LIBRARY_PATH=$LD_LIBRARY_PD:$DM_HOME/bin
export PATH=$PATH:$DM_HOME/bin:$DM_HOME/tool
```


## create instance

```bash
su - dmdba
source ~/.bash_profile
dminit path=/optdmdata/data PAGE_SIZE=32 EXTENT_SIZE=32 CASE_SENSITIVE=y CHARSET=1 DB_NAME=DM8 INSTANCE_NAME=DBSERVER PORT_NUM=5236
```

## install service

```bash
su - dmdba
cd /home/dmdba/dmdbms/script/root
./dm_service_uninstaller.sh -t dmserver -dm_ini /opt/dmdata/data/DMDB/dm.ini -p 8
```

 uninstall
```bash
su - dmdba
cd /home/dmdba/dmdbms/script/root 
./dm_service_uninstaller.sh -t dmserver -dm_ini /opt/dmdata/data/DMDB/dm.ini -p 8
```