后台任务节点高可用

配置keepalived服务

在每个seafile后端节点上安装和配置 keepalived 来实现浮动 IP 地址。

CentOS 7:

  1. yum install keepalived -y

假设配置了两个seafile后台任务节点：background1、background2

在background1上修改 keepalived 配置文件(/etc/keepalived/keepalived.conf),写入如下内容：

  1. ! Configuration File for keepalived
  3. global_defs {
  4.     notification_email {
  5.         root@localhost
  6.     }
  7.     notification_email_from keepalived@localhost
  8.     smtp_server 127.0.0.1
  9.     smtp_connect_timeout 30
  10.     router_id background1
  11.     vrrp_mcast_group4 224.0.100.18
  12. }
  14. vrrp_instance VI_1 {
  15.     state MASTER
  16.     interface eno16777736
  17.     virtual_router_id 52
  18.     priority 100
  19.     advert_int 1
  20.     authentication {
  21.         auth_type PASS
  22.         auth_pass hello123
  23.     }
  24.     virtual_ipaddress {
  25.         172.26.154.43/24 dev eno16777736
  26.     }
  27.     notify_master "/opt/seafile/seafile-server-latest/seafile-background-tasks.sh start"
  28.     notify_backup "/opt/seafile/seafile-server-latest/seafile-background-tasks.sh stop"
  29. }

在background2上修改 keepalived 配置文件(/etc/keepalived/keepalived.conf),写入如下内容：

  1. ! Configuration File for keepalived
  3. global_defs {
  4.     notification_email {
  5.         root@localhost
  6.     }
  7.     notification_email_from keepalived@localhost
  8.     smtp_server 127.0.0.1
  9.     smtp_connect_timeout 30
  10.     router_id background2
  11.     vrrp_mcast_group4 224.0.100.18
  12. }
  14. vrrp_instance VI_1 {
  15.     state BACKUP
  16.     interface eno16777736
  17.     virtual_router_id 52
  18.     priority 98
  19.     advert_int 1
  20.     authentication {
  21.         auth_type PASS
  22.         auth_pass hello123
  23.     }
  24.     virtual_ipaddress {
  25.         172.26.154.43/24 dev eno16777736
  26.     }
  27.     notify_master "/opt/seafile/seafile-server-latest/seafile-background-tasks.sh start"
  28.     notify_backup "/opt/seafile/seafile-server-latest/seafile-background-tasks.sh stop"
  29. }
  • 注意：以上配置中interface指定该节点的网卡设备名称，请根据实际情况配置。virtual_ipaddress 是后台服务的虚拟IP地址，也需要根据实际情况配置。
    分别在两个后端节点上重启keepalived服务：
  1. systemctl restart keepalived.service

重启成功后查看background1节点是否成功启用了相应的VIP。

修改seafile前端服务器相关配置

当配置好keepalived实现了虚拟IP漂移后，需要将seafile前端服务器里的相关配置指向后端服务器的虚拟IP。在各seafile前端服务器节点上：编辑seafevents.conf，修改以下配置信息：

  1. [INDEX FILES]
  2. ...
  3. es_host = <vip of nodes background>
  4. ...

编辑seahub_settings.py，修改以下配置信息：

  1. ...
  2. OFFICE_CONVERTOR_ROOT = 'http://<vip of nodes background>'
  3. ...
  • 注意：以上配置文件中的'vip'指的是keepalived服务上配置的虚拟IP地址。
    重启前端节点上的seafile、seahub服务：
  1. ./seafile.sh restart
  2. ./seahub.sh restart # 如果你使用 fastcgi 请使用此命令`./seahub.sh restart-fastcgi`

原文: https://manual-cn.seafile.com/deploy_pro/setup_keepalived_with_background.html