[doc] add quick start (#108)

* add quick start

* add quick start by Amber

* update

* fix londa's comment

* fix jiyu

doc/quick-start-cn.md

+# 快速入门指南
+
+本指南以单机安装 OceanBase 数据库为例指导您如何快速使用 OceanBase 数据库。
+
+## 前提条件
+
+在安装 OceanBase 数据库之前，确保您的机器可以连接公网。并且您的软硬件环境满足以下要求：
+
+| 项目 | 描述 |
+| ---- | --- |
+| 系统     | Red Hat Enterprise Linux Server 7.2 版本（内核 Linux 3.10.0 版本及以上） <br /> CentOS Linux 7.2 版本（内核 Linux 3.10.0 版本及以上）    |
+| 内存     | 至少 16G   <br /> 推荐 64G 及以上|
+| 磁盘类型   | 推荐使用 SSD|
+| 磁盘存储空间 | 至少 100G|
+| 文件系统   | EXT4 戓 XFS|
+| 网卡     | 千兆互联及以上|
+
+ >**注意：** 以下内容以 x86 架构的 CentOS Linux 7.2 镜像作为环境，其他环境可能略有不同。
+
+## 步骤 1：下载安装 OBD
+
+获取 OceanBase 数据库最快的方式是使用数据库部署工具 OceanBase Deployer（简称 OBD），因此推荐您使用此方式体验 OceanBase 数据库。按照以下步骤下载并安装 OBD：
+
+### 方案1：通过 YUM 软件源安装 OBD
+
+如您的机器可以访问公网，并能够添加三方 YUM 软件源，您可以运行以下命令，使用 OceanBase 的官方软件源安装 OBD：
+
+   ```bash
+   sudo yum install -y yum-utils
+   sudo yum-config-manager --add-repo https://mirrors.aliyun.com/oceanbase/OceanBase.repo
+   sudo yum install -y ob-deploy
+   ```
+
+### 方案2: 离线安装
+
+1. 下载 OBD 离线 RPM 安装包。
+
+2. 运行以下命令安装 OBD。
+
+    ```bash
+    yum install -y ob-deploy-1.0.0-1.el7.x86_64.rpm
+    source /etc/profile.d/obd.sh
+    ```
+
+## （可选）步骤 2：下载 OceanBase 数据库
+
+如果您的机器可以连接公网，则直接跳过此步骤。因为在您执行了 `obd cluster deploy` 命令时，OBD 将检查您的目标机器是否已存在 OceanBase 数据库软件包。如未找到，OBD 将自动从 YUM 源获取。
+
+如果您的机器机器不能连接公网，按照以下步骤下载 OceanBase 数据库的离线软件包：
+
+1. 运行以下命令，下载 OceanBase 数据库的离线软件包：
+
+    ```bash
+    # 创建一个目录用于下载
+    mkdir rpm
+    cat > rpm_list <<EOF
+    oceanbase-ce-3.1.0-1.el7.x86_64.rpm
+    oceanbase-ce-libs-3.1.0-1.el7.x86_64.rpm
+    obproxy-3.1.0-1.el7.x86_64.rpm
+    EOF
+
+    wget -B https://mirrors.aliyun.com/oceanbase/community/stable/el/7/x86_64/ -i rpm_list -P rpm
+    ```
+
+    **注意：** 示例中的安装包可能不是最新版本，建议您下载最新的安装包。详细信息，参考 [OceanBase 数据库发行版本](https://github.com/oceanbase/oceanbase/releases)。
+
+2. 运行以下命令，将软件包拷贝到您的中控机器：
+
+    ```bash
+    scp -r rpm <user>@<your-machine-ip>
+    ```
+
+3. 在中控机器运行以下命令，将 OceanBase 数据库的离线软件包加入本地镜像：
+
+    ```bash
+    cd ~/rpm
+    obd mirror clone *.rpm
+    ```
+
+## 步骤 3：部署 OceanBase 数据库
+
+本节介绍如何使用 OBD 部署 OceanBase 数据库。按照以下步骤部署 OceanBase 数据库：
+
+1. 从 Gitee/GitHub 上下载对应的配置文件模板。
+
+    - 如果您采用本地安装，即中控机器和目标机器是同一台机器，请下载 [本地安装配置文件](https://gitee.com/oceanbase/obdeploy/blob/master/example/mini-local-example.yaml)。
+    - 如果您采用单机安装，即中控机器和目标机器不是同一台机器，且目标机器只有一台，请下载 [单机安装配置文件](https://gitee.com/oceanbase/obdeploy/blob/master/example/mini-single-example.yaml)。
+    - 如果您采用分布式安装，即中控机器和目标机器不是同一台机器，且目标机器有多台，请下载 [分布式安装配置文件](https://gitee.com/oceanbase/obdeploy/blob/master/example/mini-distributed-example.yaml)。
+    > **注意：** 此处以本地安装为例，介绍如何修改配置文件。您必须按照您的安装方式选择对应的配置文件模板。
+
+2. 如您的中控机器和目标机器不是同一台，您还需要在配置文件顶部添加远程 SSH 访问的相关配置。
+
+    ```yaml
+    user:
+      username: <您的账号名>
+      password: <您的登录密码>
+      key_file: <您的私钥路径>
+    ```
+
+    其中，`username` 为登录到目标机器的用户名，确保您的用户名有 `home_path` 权限。
+    > **注意：** 通常情况下，您只能使用登录密码或者私钥登录中的一种方式登录目标机器，如果同时填写，`password` 将被认为是您私钥的密码。
+
+3. （可选）修改配置文件中的 IP 地址。
+
+    ```yaml
+    oceanbase-ce:
+      servers:
+        - name: z1
+        # Please don't use hostname, only IP can be supported
+        ip: 11.166.80.01
+    ```
+
+4. 修改配置文件中的 `devname` 变量和 `home_path`。
+
+    ```yaml
+    oceanbase-ce:
+      global:
+        home_path: <your_observer_work_path>
+        # Please set devname as the network adaptor's name whose ip is in the setting of severs.
+        # if set severs as "127.0.0.1", please set devname as "lo"
+        # if current ip is 192.168.1.10, and the ip's network adaptor'sname is "eth0", please use "eth0"
+        devname: bond0
+    ```
+
+## 步骤 4：连接 OceanBase 数据库
+
+按照以下步骤部署并启动 OceanBase 数据库实例：
+
+1. 运行以下命令部署集群：
+
+    ```bash
+    obd cluster deploy <deploy_name> -c <deploy_config_path>
+    ```
+
+   其中，`deploy_name` 为集群名称。一个集群只能有一个名称，且集群名称不能重复。
+
+2. 运行以下命令启动集群：
+
+    ```bash
+    obd cluster start <deploy_name>
+    ```
+
+3. 运行以下命令查看集群状态：
+
+    ```bash
+    obd cluster display <deploy_name>
+    ```
+
+## 步骤 5：连接 OceanBase 数据库
+
+按照以下步骤连接 OceanBase 数据库：
+
+1. 安装 OceanBase 数据库客户端 OBClient：
+
+    如您的机器已添加 OceanBase 官方 YUM 源作为软件源，使用以下命令直接安装：
+
+    ```bash
+    sudo yum install -y obclient
+    ```
+
+    否则您需要在机器上准备好离线安装包，并执行以下命令安装：
+
+    ```bash
+    sudo yum install -y obclient-2.0.0-1.el7.x86_64.rpm 
+    ```
+
+    **注意：** 示例中的安装包可能不是最新版本，建议您下载最新的安装包。详细信息，参考 [OceanBase 官网下载中心](https://github.com/oceanbase/oceanbase/releases)。
+
+2. 运行以下命令，使用 OBClient 客户端连接 OceanBase 数据库：
+
+    ```bash
+    obclient -h<your_ip> -P<observer_mysql_port> -uroot
+    ```
+
+    其中，`<your_ip>` 为您 OceanBase 实例所在的机器 IP 地址。`observer` 默认使用端口 `2883` 连接 OBClient。如果您对端口做了更改，此处使用您实际的端口号。
+
+    返回以下信息：
+
+    ```bash
+    Welcome to the MariaDB monitor.  Commands end with ; or \g.
+    Your MySQL connection id is 3221546072
+    Server version: 5.7.25 OceanBase 3.1.0 (r1-) (Built Apr  7 2021 08:14:49)
+
+    Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
+
+    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
+
+    MySQL [(none)]>
+    ```
+
+## （可选）步骤 6：创建租户
+
+创建租户详细信息，参考 [创建用户租户](https://open.oceanbase.com/docs/community/oceanbase-database/V3.1.0/create-a-user-tenant)。

doc/quick-start-en.md

+# Quick Start
+
+This guide navigates you through the installation of OceanBase Database by taking standalone OceanBase Database as an example.
+
+## Prerequisites
+
+Your server has access to the Internet, and the software and hardware meet the following requirements:
+
+| Item | Description |
+| ---- | --- |
+| System | Red Hat Enterprise Linux Server 7.2 Release with the Linux kernel version being 3.10.0 or later<br /> CentOS Linux 7.2 Release with the Linux kernel version being 3.10.0 or later |
+| Memory | At least 16 GB<br /> 64 GB or larger is recommended |
+| Disk type | SSDs are recommended |
+| Disk space | At least 100 GB |
+| File system | EXT4 or XFS |
+| NIC | 1 Gbit/s or above |
+
+> **NOTE:** The following description is based on a CentOS Linux 7.2 image in the x86 architecture. The installation procedure may be slightly different in other environments.
+
+## Step 1: Download and install OBD
+
+We recommend that you use OceanBase Deployer (OBD). It is the fastest tool for the deployment of OceanBase Database. Take the following steps to download and install OBD:
+
+### Option 1: Install OBD by using Yum repositories
+
+If your server has access to the Internet and supports third-party software from YUM repositories, you can run the following command to install OBD:
+
+```bash
+sudo yum install -y yum-utils
+sudo yum-config-manager --add-repo https://mirrors.aliyun.com/oceanbase/OceanBase.repo
+sudo yum install -y ob-deploy
+```
+
+### Option 2: Install ODB offline
+
+1. Download the RPM package of OBD.
+
+2. Run the following command to install OBD.
+
+   ```bash
+   yum install -y ob-deploy-1.0.0-1.el7.x86_64.rpm
+   source /etc/profile.d/obd.sh
+   ```
+
+## (Optional) Step 2: Download the OceanBase Database installation package
+
+You may skip this step if your server has access to the Internet, because when you run the `obd cluster deploy` command, OBD checks whether the OceanBase Database installation package exists on your target server. If the package is not found, OBD automatically downloads it from YUM repositories.
+
+If your server does not have Internet access, take the following steps to install the software offline:
+
+1. Run the following command to download the OceanBase Database installation package:
+
+   ```bash
+   # Create a directory to store the package.
+   mkdir rpm
+   cat > rpm_list <<EOF
+   oceanbase-ce-3.1.0-1.el7.x86_64.rpm
+   oceanbase-ce-libs-3.1.0-1.el7.x86_64.rpm
+   obproxy-3.1.0-1.el7.x86_64.rpm
+   EOF
+
+   wget -B https://mirrors.aliyun.com/oceanbase/community/stable/el/7/x86_64/ -i rpm_list -P rpm
+   ```
+
+   **NOTE:** The installation packages in the preceding example may not be the latest version. We recommend that you download the latest installation packages. For more information, see [OceanBase Database Releases](https://github.com/oceanbase/oceanbase/releases).
+
+2. Run the following command to copy the package to your central control server:
+
+   ```bash
+   scp -r rpm <user>@<your-machine-ip>
+   ```
+
+3. Run the following command on the central control server to load the package to the local image:
+
+   ```bash
+   cd ~/rpm
+   obd mirror clone *.rpm
+   ```
+
+## Step 3: Deploy OceanBase Database
+
+This section describes how to use OBD to deploy OceanBase Database. Take the following steps:
+
+1. Download the corresponding configuration template from GitHub. These are some sample configurations:
+
+   - If you want to install OceanBase Database on your central control server, download the [local installation configuration file](https://github.com/oceanbase/obdeploy/blob/master/example/mini-local-example.yaml).
+   - If you want to install OceanBase Database on a standalone server other than the central control server, download the [standalone installation configuration file](https://github.com/oceanbase/obdeploy/blob/master/example/mini-single-example.yaml).
+   - If you want to install OceanBase Database on multiple servers other than the central control server, download the [distributed installation configuration file](https://github.com/oceanbase/obdeploy/blob/master/example/mini-distributed-example.yaml)
+   > **NOTE:** The following example describes how to modify the configuration file in local installation mode. You must select the configuration template that corresponds to your installation mode.
+
+2. If you want to install OceanBase Database on a server other than the central control server, you need to add relevant configurations for SSH remote access at the beginning of the configuration file.
+
+   ```yaml
+   user:
+     username: <Your account name.>
+     password: <Your logon password.>
+     key_file: <The path of your private key.>
+   ```
+
+   `username` specifies the username used to log on to the target server. Make sure that your username has access to `home_path`.
+   > **NOTE:** Generally, you can use only the password or the private key to log on. If you specify both of them, `password` is considered as the password of your private key.
+
+3. (Optional) Modify the IP address in the configuration file.
+
+   ```yaml
+   oceanbase-ce:
+     servers:
+       - name: z1
+       # Please don't use hostname, only IP can be supported
+       ip: 11.166.80.01
+   ```
+
+4. Modify the `devname` and `home_path` variables in the configuration file.
+
+   ```yaml
+   oceanbase-ce:
+     global:
+       home_path: <your_observer_work_path>
+       # Please set devname as the network adaptor's name whose ip is in the setting of severs.
+       # if set severs as "127.0.0.1", please set devname as "lo"
+       # if current ip is 192.168.1.10, and the ip's network adaptor'sname is "eth0", please use "eth0"
+       devname: bond0
+   ```
+
+## Step 4: Connect to OceanBase Database
+
+Take the following steps to deploy and start the OceanBase Database instance:
+
+1. Run the following command to deploy the cluster:
+
+   ```bash
+   obd cluster deploy <deploy_name> -c <deploy_config_path>
+   ```
+
+   `deploy_name` specifies the name of the cluster. You can specify only one unique name for a cluster.
+
+2. Run the following command to start the cluster:
+
+   ```bash
+   obd cluster start <deploy_name>
+   ```
+
+3. Run the following command to check the cluster status:
+
+   ```bash
+   obd cluster display <deploy_name>
+   ```
+
+## Step 5: Connect to OceanBase Database
+
+Take the following steps:
+
+1. Install the OceanBase Database client (OBClient):
+
+   If you have added YUM repositories as the software source on your server, run the following command to install the OBClient:
+
+   ```bash
+   sudo yum install -y obclient
+   ```
+
+   Otherwise, you need to download the installation package to the server and run the following command to install it offline:
+
+   ```bash
+   sudo yum install -y obclient-2.0.0-1.el7.x86_64.rpm
+   ```
+
+   **NOTE:** The installation packages in the preceding example may not be the latest version. We recommend that you download the latest installation packages. For more information, see [OceanBase Download Center](https://github.com/oceanbase/oceanbase/releases).
+
+2. Run the following command to connect to OceanBase Database from the OBClient:
+
+   ```bash
+   obclient -h<your_ip> -P<observer_mysql_port> -uroot
+   ```
+
+   `<your_ip>` specifies the IP address of the server where your OceanBase Database instance is located. By default, the `observer` connects to the OBClient through port `2883`. Use the actual port number if you have changed it.
+
+   The following returned information indicates successful connection:
+
+   ```bash
+   Welcome to the MariaDB monitor.  Commands end with ; or \g.
+   Your MySQL connection id is 3221546072
+   Server version: 5.7.25 OceanBase 3.1.0 (r1-) (Built Apr  7 2021 08:14:49)
+
+   Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
+
+   Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
+
+   MySQL [(none)]>
+   ```
+
+## (Optional) Step 6: Create a tenant
+
+For more information, see [Create a user tenant](https://open.oceanbase.com/docs/community/oceanbase-database/V3.1.0/create-a-user-tenant)