附录 B. 在独立的机器中安装 Websocket 代理

流程

1. 安装 websocket 代理：

   # yum install ovirt-engine-websocket-proxy

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2. 运行 engine-setup 命令以配置 websocket 代理。

   # engine-setup

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   注意

   如果也安装了 rhvm 软件包，则在要求在此主机上配置管理器（Engine）时，请选择 No。

3. 按 Enter 键，允许 engine-setup 在机器上配置 websocket 代理服务器。

   Configure WebSocket Proxy on this machine? (Yes, No) [Yes]:

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4. 按 Enter 接受自动检测到的主机名，或者输入备用主机名，然后按 Enter 键。请注意，如果您使用虚拟主机，则自动检测主机名可能不正确：

   Host fully qualified DNS name of this server [host.example.com]:

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5. 按 Enter 键允许 engine-setup 配置防火墙并打开外部通信所需的端口。如果不允许 engine-setup 修改防火墙配置，则必须手动打开所需端口。

   Setup can automatically configure the firewall on this system.
   Note: automatic configuration of the firewall may overwrite current settings.
   Do you want Setup to configure the firewall? (Yes, No) [Yes]:

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6. 输入 Manager 机器的 FQDN，然后按 Enter 键。

   Host fully qualified DNS name of the engine server []: manager.example.com

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7. 按 Enter 键，允许 engine-setup 在 Manager 机器上执行操作，或按 2 以手动执行操作。

   Setup will need to do some actions on the remote engine server. Either automatically, using ssh as root to access it, or you will be prompted to manually perform each such action.
   Please choose one of the following:
   1 - Access remote engine server using ssh as root
   2 - Perform each action manually, use files to copy content around
   (1, 2) [1]:

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   1. 按 Enter 接受默认的 SSH 端口号，或者输入 Manager 机器的端口号。

      ssh port on remote engine server [22]:

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   2. 输入 root 密码以登录到 Manager 计算机，然后按 Enter 键。

      root password on remote engine server engine_host.example.com:

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8. 选择是否查看 iptables 规则与当前设置不同。

   Generated iptables rules are different from current ones.
   Do you want to review them? (Yes, No) [No]:

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9. 按 Enter 键确认配置设置。

   --== CONFIGURATION PREVIEW ==--
   
   Firewall manager                        : iptables
   Update Firewall                         : True
   Host FQDN                               : host.example.com
   Configure WebSocket Proxy               : True
   Engine Host FQDN                        : engine_host.example.com
   
   Please confirm installation settings (OK, Cancel) [OK]:

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   提供了相应的说明，将 Manager 计算机配置为使用配置的 websocket 代理。

   Manual actions are required on the engine host
   in order to enroll certs for this host and configure the engine about it.
   
   Please execute this command on the engine host:
      engine-config -s WebSocketProxy=host.example.com:6100
   and than restart the engine service to make it effective

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10. 登录 Manager 机器并执行提供的说明。

    # engine-config -s WebSocketProxy=host.example.com:6100
    # systemctl restart ovirt-engine.service

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