怎么搭建LVS+Keepalived+MySQL

本篇內(nèi)容主要講解“怎么搭建LVS+Keepalived+MySQL”，感興趣的朋友不妨來看看。本文介紹的方法操作簡(jiǎn)單快捷，實(shí)用性強(qiáng)。下面就讓小編來帶大家學(xué)習(xí)“怎么搭建LVS+Keepalived+MySQL”吧!

LVS負(fù)責(zé)負(fù)載均衡轉(zhuǎn)發(fā)請(qǐng)求，keepalived負(fù)責(zé)檢查L(zhǎng)VS的realserver狀態(tài)，及時(shí)remove失效節(jié)點(diǎn)、add復(fù)活節(jié)點(diǎn)。
本實(shí)驗(yàn)主要功能測(cè)試，所以只準(zhǔn)備了兩臺(tái)MySQL服務(wù)器，僅為簡(jiǎn)單說明問題。
vm1 10.0.0.11        master   server_id 11
vm2 10.0.0.12        slave         server_id 12

Director:
vm3  10.0.0.14  

VIP: 10.0.0.20

1 在Directory server vm3 上安裝ipvsadm和keepalived
yum install ipvsadm
安裝keepalived
yum install libnfnetlink*
tar -zxvf keepalived-1.2.7.tar.gz
./configure --prefix=/usr/local/keepalived
make && make install
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
mkdir /etc/keepalived

2 vm1 vm2上，執(zhí)行以下操作.
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore  
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce  
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore  
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce  

ifconfig lo:0 10.0.0.20 netmask 255.255.255.255

3 在Directory server vm3上編輯/etc/keepalived/keepalived.conf文件，內(nèi)容如下：

點(diǎn)擊(此處)折疊或打開

1. global_defs {

2. router_id HaMySQL_1

3. }

4. vrrp_sync_group VGM {

5. group {

6. VI_MYSQL

7. }

8. }

9. vrrp_instance VI_MYSQL {

10. state MASTER

11. interface eth0

12. virtual_router_id 100

13. priority 100

14. advert_int 1

15. authentication {

16. auth_type PASS

17. auth_pass 1111

18. }

19. virtual_ipaddress {

20. 10.0.0.20

21. }

22. }

23. 
    

24. virtual_server 10.0.0.20 3306 {

25. delay_loop 6

26. lb_algo rr

27. lb_kind DR

28. protocol TCP

29. nat_mask 255.255.255.0

30. persistence_timeout 10

31. 
    

32. real_server 10.0.0.11 3306 {

33. weight 3

34. TCP_CHECK {

35. connect_timeout 3

36. nb_get_retry 3

37. delay_before_retry 3

38. connect_port 3306

39. }

40. }

41. 
    

42. real_server 10.0.0.12 3306 {

43. weight 3

44. TCP_CHECK {

45. connect_timeout 3

46. nb_get_retry 3

47. delay_before_retry 3

48. connect_port 3306

49. }

50. }

51. 
    

52. }

4 啟動(dòng)MySQL和keepalived。
vm1:
/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql3306/my.cnf &

vm2:
/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql3306/my.cnf

vm3:
/etc/init.d/keepalived start

5 驗(yàn)證
vm3:
[root@vm3 keepalived]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.0.0.20:3306 rr persistent 2
  -> 10.0.0.11:3306               Route   3      1          0
  -> 10.0.0.12:3306               Route   3      1          0

可以看到負(fù)載均衡已啟動(dòng)，vm2 vm3都已加進(jìn)來了。
從客戶端連接VIP 10.0.0.20:3306
C:\mysql-5.7.11-winx64\mysql-5.7.11-winx64\bin>mysql.exe -uroot -pmysql -h20.0.0.20 -P3306
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 90
Server version: 5.6.27-log Source distribution

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> select @@server_id;exit;
+-------------+
| @@server_id |
+-------------+
|          11 |
+-------------+
1 row in set (0.00 sec)

從server_id可以看出客戶端連接的是vm1。

關(guān)掉vm1上的MySQL服務(wù)。
[root@vm3 keepalived]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.0.0.20:3306 rr persistent 2
  -> 10.0.0.12:3306               Route   3      1          0


LVS規(guī)則已經(jīng)更新，remove了vm1，再次從客戶端連接。
C:\mysql-5.7.11-winx64\mysql-5.7.11-winx64\bin>mysql.exe -uroot -pmysql -h20.0.0.20 -P3306
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 61
Server version: 5.6.27-log Source distribution

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> select @@server_id;exit;
+-------------+
| @@server_id |
+-------------+
|          12 |
+-------------+
1 row in set (0.00 sec)

重新啟動(dòng)vm1上的MySQL服務(wù)。
[root@vm3 ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.0.0.20:3306 rr persistent 2
  -> 10.0.0.11:3306               Route   3      1          0
  -> 10.0.0.12:3306               Route   3      1          1

LVS規(guī)則已自動(dòng)刷新，vm1重新被加入。

到此，相信大家對(duì)“怎么搭建LVS+Keepalived+MySQL”有了更深的了解，不妨來實(shí)際操作一番吧！這里是億速云網(wǎng)站，更多相關(guān)內(nèi)容可以進(jìn)入相關(guān)頻道進(jìn)行查詢，關(guān)注我們，繼續(xù)學(xué)習(xí)！