黑屏环境下，如何利用OBD部署OceanBase企业版集群

一、前言

OBD，作为OceanBase官方推出的部署工具，显著简化了OB单机及集群的部署流程。此前，OBD能够支持对社区版OB进行一键部署，那OBD是否同样支持OB企业版的部署呢？

本文为大家介绍通过OBD，在OB企业版集群部署过程中遇到的一些问题和解决方案，希望能为大家提供一些参考。

二、部署准备

注意⚠️：本篇文档部署的是企业版OceanBase，并非社区版

前置条件：为了方便OBD远程部署，需要将集群内开发机的SSH登录用户名和密码改为一样的，如：

username：root
password：xxxxx

在一台机器上先准备如下四个文件（如下载到AY1上），点击前往 mirror 网站搜索下载

三、部署流程

📖 以下部署流程只需要在一台机器上完成即可，如我所用的机器是 AY1，其 IP 为 192.168.0.167

解压 ob-deploy 文件

rpm -ivh ob-depoly.xxxxxx.rpm

然后将所有的 rpm 加入 OBD 的镜像当中

rpm mirror remote disable
rpm mirror clone *.rpm
rpm mirror list local

查看是否添加成功

进入 /usr/obd/example 目录下，编辑 mini-distribute-withe-obproxy-example.yaml 文件

## Only need to configure when remote login is required
user:
   username: 你设置的用户名，一般是root
   password: 你设置的密码
#   key_file: your ssh-key file path if need
   port: 22
   timeout: 30
oceanbase:
  servers:
    - name: server1
      # Please don't use hostname, only IP can be supported
      ip: 192.168.18.207
    - name: server2
      ip: 192.168.18.205
    - name: server3
      ip: 192.168.18.206
  global:
    # Starting from observer version 4.2, the network selection for the observer is based on the 'local_ip' parameter, and the 'devname' parameter is no longer mandatory.
    # If the 'local_ip' parameter is set, the observer will first use this parameter for the configuration, regardless of the 'devname' parameter.
    # If only the 'devname' parameter is set, the observer will use the 'devname' parameter for the configuration.
    # If neither the 'devname' nor the 'local_ip' parameters are set, the 'local_ip' parameter will be automatically assigned the IP address configured above.
    # devname: eth0
    cluster_id: 1 
    # please set memory limit to a suitable value which is matching resource.
    memory_limit: 6G # The maximum running memory for an observer
    system_memory: 1G # The reserved system memory. system_memory is reserved for general tenants. The default value is 30G.
    datafile_size: 2G # Size of the data file.
    datafile_next: 2G # the auto extend step. Please enter an capacity, such as 2G
    datafile_maxsize: 20G # the auto extend max size. Please enter an capacity, such as 20G
    log_disk_size: 13G # The size of disk space used by the clog files.
    cpu_count: 16
    production_mode: false
    enable_syslog_wf: false # Print system logs whose levels are higher than WARNING to a separate log file. The default value is true.
    enable_syslog_recycle: true # Enable auto system log recycling or not. The default value is false.
    max_syslog_file_count: 4 # The maximum number of reserved log files before enabling auto recycling. The default value is 0.
    # observer cluster name, consistent with obproxy's cluster_name
    appname: obcluster
    # root_password: # root user password, can be empty
    # proxyro_password: # proxyro user pasword, consistent with obproxy's observer_sys_password, can be empty
  server1:
    mysql_port: 2881 # External port for OceanBase Database. The default value is 2881. DO NOT change this value after the cluster is started.
    rpc_port: 2882 # Internal port for OceanBase Database. The default value is 2882. DO NOT change this value after the cluster is started.
    #  The working directory for OceanBase Database. OceanBase Database is started under this directory. This is a required field.
    home_path: /root/observer
    # The directory for data storage. The default value is $home_path/store.
    # data_dir: /data
    # The directory for clog, ilog, and slog. The default value is the same as the data_dir value.
    # redo_dir: /redo
    zone: zone1
  server2:
    mysql_port: 2881 # External port for OceanBase Database. The default value is 2881. DO NOT change this value after the cluster is started.
    rpc_port: 2882 # Internal port for OceanBase Database. The default value is 2882. DO NOT change this value after the cluster is started.
    #  The working directory for OceanBase Database. OceanBase Database is started under this directory. This is a required field.
    home_path: /root/observer
    # The directory for data storage. The default value is $home_path/store.
    # data_dir: /data
    # The directory for clog, ilog, and slog. The default value is the same as the data_dir value.
    # redo_dir: /redo
    zone: zone2
  server3:
    mysql_port: 2881 # External port for OceanBase Database. The default value is 2881. DO NOT change this value after the cluster is started.
    rpc_port: 2882 # Internal port for OceanBase Database. The default value is 2882. DO NOT change this value after the cluster is started.
    #  The working directory for OceanBase Database. OceanBase Database is started under this directory. This is a required field.
    home_path: /root/observer
    # The directory for data storage. The default value is $home_path/store.
    # data_dir: /data
    # The directory for clog, ilog, and slog. The default value is the same as the data_dir value.
    # redo_dir: /redo
    zone: zone3
obproxy:
  # Set dependent components for the component.
  # When the associated configurations are not done, OBD will automatically get the these configurations from the dependent components.
  depends:
    - oceanbase
  servers:
    - 192.168.18.207
  global:
    listen_port: 2883 # External port. The default value is 2883.
    prometheus_listen_port: 2884 # The Prometheus port. The default value is 2884.
    home_path: /root/obproxy
    # oceanbase root server list
    # format: ip:mysql_port;ip:mysql_port. When a depends exists, OBD gets this value from the oceanbase-ce of the depends.
    # rs_list: 192.168.1.2:2881;192.168.1.3:2881;192.168.1.4:2881
    enable_cluster_checkout: false
    # observer cluster name, consistent with oceanbase-ce's appname. When a depends exists, OBD gets this value from the oceanbase-ce of the depends.
    # cluster_name: obcluster
    skip_proxy_sys_private_check: true
    enable_strict_kernel_release: false
    proxy_id: 100
    client_session_id_version: 2
    # obproxy_sys_password: # obproxy sys user password, can be empty. When a depends exists, OBD gets this value from the oceanbase-ce of the depends.
    # observer_sys_password: # proxyro user pasword, consistent with oceanbase-ce's proxyro_password, can be empty. When a depends exists, OBD gets this value from the oceanbase-ce of the depends.

编辑好文件后我们就可以部署 obcluster 这个集群了

obd cluster deploy obcluster -c mini-distributed-with-obproxy-example.yaml

部署成功截图

此时启动 obcluster 可能会报错

what❓

针对此问题有两种解决方法

方法一

• 如果对安全检查不是很在意，且仅仅是简单测试的话可以试试该方法，如下直接删除安全检查脚本即可（结果可能不稳定，且也需要每台机器运行一遍，故不推荐该方法）

rm -rf ~/.obd/plugins/oceanbase/*/start_check.py

方法二

• 比较推荐的方法，只需要每台机器执行一遍如下命令

echo -e "* soft nproc 120000\n* hard nproc 120000" >> /etc/security/limits.d/20-nproc.conf
source /etc/profile

本篇文档使用方法二进行部署，随后重新执行启动集群命令

obd cluster start obcluster

按照提示登录 OB 即可检验是否拉起分布式环境

最终集群结果分析：

💡OBD 全程部署需要等待的时间大约为3分钟。若您想获取源码及更多详情，请访问我们的 GitHub 仓库：GitHub - oceanbase/obdeploy: A deployer and package manager for OceanBase open-source software.。