用keepalived实现Samba高可用

白日放歌须纵酒，青春作伴好还乡。这篇文章主要讲述用keepalived实现Samba高可用相关的知识，希望能为你提供帮助。
结构如图

文章图片

keepalived 虚拟IP: 172.31.193.1
SMB1: 172.31.206.55 (MASTER)
SMB2: 172.31.207.120 (BACKUP)
安装
sudo apt-get install keepalived
sudo vim /etc/keepalived/keepalived.conf
在机器SMB1上

vrrp_instance smb1 { state MASTER interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1234 } virtual_ipaddress { 172.31.193.1 } }virtual_server 172.31.193.1 445 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 10 protocol TCPreal_server 172.31.206.55 445 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 445 } }real_server 172.31.207.120 445 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 445 } } }virtual_server 172.31.193.1 139 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 10 protocol TCPreal_server 172.31.206.55 139 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 139 } }real_server 172.31.207.120 139 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 139 } } }

在SMB2上，主要区别是state 分MASTER和BACKUP，然后priority master 为100，backup为90.

vrrp_instance smb2 { state BACKUP interface eth0 virtual_router_id 51 priority 90 advert_int 1 authentication { auth_type PASS auth_pass 1234 } virtual_ipaddress { 172.31.193.1 } }virtual_server 172.31.193.1 445 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 10 protocol TCPreal_server 172.31.206.55 445 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 445 } }real_server 172.31.207.120 445 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 445 } } }virtual_server 172.31.193.1 139 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 10 protocol TCPreal_server 172.31.206.55 139 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 139 } }real_server 172.31.207.120 139 { weight 1 TCP_CHECK { connect_timeout 10 nb_get_retry 3 delay_before_retry 3 connect_port 139 } } }

安装配置Samba服务
sudo apt-get install samba
sudo vim /etc/samba/smb.conf
添加共享文件夹
[shareDoc]
comment = Folder for File Sharing
path = /shareDoc
public = no
writable = yes
valid users = user1,user2
添加smb用户
sudo smbpasswd -a user1
sudo service smbd restart
sudo service keepalived restart
注意服务重启后即可ping同这个虚拟IP: 172.31.193.1, 但是通过\\\\IP 共享的方式访问还需要一些时间让网络通知完成。
【用keepalived实现Samba高可用】此前在AWS上通过EC2做这个实验，发现无论如何都无法ping通这个虚拟IP，查询资料后是AWS的VPC网络阻挡了这个通讯，即使我在security group里将子网间的所有All TCP/UDP全部打开也没用，后来使用本机自带的Hyper-V搭建虚拟机，顺利实现。