數據庫keepalived部署文檔

阿新 • • 發佈：2017-10-18

mysql 主從復制 keepalived部署

一.mysql數據庫RPM安裝包安裝

rpm –qa |grep -i mysql //查看是否安裝了數據庫

rpm -e 文件名–nodeps //卸載已安裝的文件

tar –xzvf ./ MariaDB-10-linux.tar.gz //解壓MySQL rpm安裝包

rpm -ivh *.rpm --force --nodeps //安裝MySQL數據庫

rpm -qa|grep -i mariadb //驗證安裝是否成功

安裝成功顯示如下:

[root@Test2 MariaDB-10-linux]# rpm -qa |grep -i mariadb

MariaDB-Galera-server-10.0.14-1.el6.x86_64

MariaDB-cassandra-engine-10.0.15-1.el6.x86_64

MariaDB-common-10.0.15-1.el6.x86_64

MariaDB-test-10.0.15-1.el6.x86_64

MariaDB-oqgraph-engine-10.0.15-1.el6.x86_64

MariaDB-shared-10.0.15-1.el6.x86_64

MariaDB-client-10.0.15-1.el6.x86_64

MariaDB-server-10.0.15-1.el6.x86_64

MariaDB-Galera-test-10.0.14-1.el6.x86_64

啟動數據庫:

[root@Test2 MariaDB-10-linux]# servicemysql start

Starting MySQL.. SUCCESS!

添加root用戶密碼

[root@Test2 MariaDB-10-linux]# mysqladmin-uroot password 123

登錄進入數據庫

[root@Test2 MariaDB-10-linux]# mysql -uroot-p123

數據庫主從模式

二.主數據庫

1.創建一個復制用戶，具有replication slave 權限。

MariaDB [(none)]> grant replicationslave on *.* to ‘copy‘@‘192.168.98.130‘ identified by ‘copy‘;

Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> flush privileges;

Query OK, 0 rows affected (0.00 sec)

2.編輯my.cnf文件

[mysqld]

key_buffer_size=2048M

server-id=132

log-bin=/var/lib/mysql/mysql-bin

log-slave-updates=1

3重啟MySQL數據庫

[root@Test0 ~]# service mysql restart

Shutting down MySQL.. SUCCESS!

Starting MySQL.. SUCCESS!

4設置讀寫鎖

MariaDB [(none)]> flush tables with readlock;

Query OK, 0 rows affected (0.00 sec)

5得到binlog日誌和偏移量

MariaDB [(none)]> show master status;

+------------------+----------+--------------+------------------+

+------------------+----------+--------------+------------------+

| mysql-bin.000002 | 312 | | |

+------------------+----------+--------------+------------------+

1 row in set (0.00 sec)

*******************************************************************************

6.備份數據庫

[root@Test0 ~]# mysqldump -uroot -p123 test>test.sql

解鎖

MariaDB [(none)]> unlock tables;

Query OK, 0 rows affected (0.00 sec)

************************************************************************************************************************************************************

2從數據庫

1編輯配置文件

vi /etc/my.cnf.d/server.conf

添加

server-id=109

2.重啟數據庫

[root@Test2 MariaDB-10-linux]# servicemysql restart

Shutting down MySQL... SUCCESS!

Starting MySQL.. SUCCESS!

3.停止復制

MariaDB [(none)]> stop slave;

Query OK, 0 rows affected, 1 warning (0.00sec)

MariaDB [(none)]> change master tomaster_host=‘192.168.98.132‘, master_user=‘copy‘, master_password=‘copy‘,master_log_file=‘mysql-bin.0000013‘, master_log_pos=365;

出現錯誤:

MariaDB [(none)]> show slave status\G;

*************************** 1. row***************************

Slave_IO_State:

Master_Host: 192.168.98.132

Master_User: copy

Master_Port: 3306

Connect_Retry: 60

Master_Log_File:mysql-bin.0000013

Read_Master_Log_Pos: 365

Relay_Log_File:Test2-relay-bin.000001

Relay_Log_Pos: 4

Relay_Master_Log_File: mysql-bin.0000013

Slave_IO_Running: No

Slave_SQL_Running: Yes

Replicate_Do_DB:

Replicate_Ignore_DB:

Replicate_Do_Table:

Replicate_Ignore_Table:

Replicate_Wild_Do_Table:

Replicate_Wild_Ignore_Table:

Last_Errno: 0

Last_Error:

Skip_Counter: 0

Exec_Master_Log_Pos: 365

Relay_Log_Space: 248

Until_Condition: None

Until_Log_File:

Until_Log_Pos: 0

Master_SSL_Allowed: No

Master_SSL_CA_File:

Master_SSL_CA_Path:

Master_SSL_Cert:

Master_SSL_Cipher:

Master_SSL_Key:

Seconds_Behind_Master: NULL

Master_SSL_Verify_Server_Cert: No

Last_IO_Errno: 1236

Last_IO_Error: Got fatal error1236 from master when reading data from binary log: ‘Could not find first logfile name in binary log index file‘

Last_SQL_Errno: 0

Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id: 132

Master_SSL_Crl:

Master_SSL_Crlpath:

Using_Gtid: No

Gtid_IO_Pos:

1 row in set (0.00 sec)

ERROR: No query specified

解決方法:

MariaDB [(none)]> stop slave;

Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> CHANGE MASTER TOMASTER_LOG_FILE=‘mysql-bin.000013‘,MASTER_LOG_POS=365;

Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> start slave;

4檢查主從是否同步正常

MariaDB [(none)]> show slave status\G;

*************************** 1. row ***************************

Slave_IO_State: Waiting formaster to send event

Master_Host: 192.168.98.132

Master_User: copy

Master_Port: 3306

Connect_Retry: 60

Master_Log_File:mysql-bin.000013

Read_Master_Log_Pos: 365

Relay_Log_File:Test2-relay-bin.000002

Relay_Log_Pos: 535

Relay_Master_Log_File: mysql-bin.000013

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Replicate_Do_DB:

Replicate_Ignore_DB:

Replicate_Do_Table:

Replicate_Ignore_Table:

Replicate_Wild_Do_Table:

Replicate_Wild_Ignore_Table:

Last_Errno: 0

Last_Error:

Skip_Counter: 0

Exec_Master_Log_Pos: 365

Relay_Log_Space: 832

Until_Condition: None

Until_Log_File:

Until_Log_Pos: 0

Master_SSL_Allowed: No

Master_SSL_CA_File:

Master_SSL_CA_Path:

Master_SSL_Cert:

Master_SSL_Cipher:

Master_SSL_Key:

Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

Last_IO_Errno: 0

Last_IO_Error:

Last_SQL_Errno: 0

Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id: 132

Master_SSL_Crl:

Master_SSL_Crlpath:

Using_Gtid: No

Gtid_IO_Pos:

1 row in set (0.00 sec)

ERROR: No query specified

5主數據庫查看:

MariaDB [(none)]> show processlist\G;

*************************** 1. row***************************

Id: 5

User: root

Host: localhost

db: NULL

Command: Query

Time: 0

State: init

Info: show processlist

Progress: 0.000

*************************** 2. row***************************

Id: 9

User: copy

Host: 192.168.98.130:56411

db: NULL

Command: Binlog Dump

Time: 54

State: Master has sent all binlog to slave; waiting for binlog to beupdated

Info: NULL

Progress: 0.000

2 rows in set (0.00 sec)

ERROR: No query specified

測試:

創建數據庫:

CREATE DATABASE IF NOT EXISTS yourdbname DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

三.數據庫keepalive

1下載keepalived軟件

http://www.keepalived.org/software/keepalived-1.3.7.tar.gz

[root@Test0 usr]# cd keepalived-1.1.5

[root@Test0 keepalived-1.1.5]# ls

AUTHOR bin ChangeLog configure configure.in CONTRIBUTORS COPYING doc genhash INSTALL install-sh keepalived keepalived.spec lib Makefile.in README TODO VERSION

[root@Test0 keepalived-1.1.5]# mkdir -p/usr/local/keepalived

2配置keppalived

[root@Test0 keepalived-1.1.5]# ./configure--prefix=/usr/local/keepalived

問題:1

configure: error:

!!!OpenSSL is not properly installed on your system. !!!

!!!Can not include OpenSSL headers files. !!!

解決方法：

yum -y install openssl-devel

問題:2

configure: error: Popt libraries isrequired

解決方法:

[root@Test2 keepalived-1.1.5]# yum installpopt-devel

make

make install

root@Test0 keepalived-1.1.5]# make install

make -C keepalived install

make[1]: Entering directory`/usr/keepalived-1.1.5/keepalived‘

install -d /usr/local/keepalived/sbin

install -m 700 ../bin/keepalived/usr/local/keepalived/sbin/

install -d /usr/local/keepalived/etc/init.d

install -m 755 etc/init.d/keepalived.init/usr/local/keepalived/etc/init.d/keepalived

install -d /usr/local/keepalived/etc/keepalived/samples

install -m 644etc/keepalived/keepalived.conf /usr/local/keepalived/etc/keepalived/

install -m 644 ../doc/samples/*/usr/local/keepalived/etc/keepalived/samples/

make[1]: Leaving directory`/usr/keepalived-1.1.5/keepalived‘

make -C genhash install

make[1]: Entering directory`/usr/keepalived-1.1.5/genhash‘

install -d /usr/local/keepalived/bin

install -m 755 ../bin/genhash/usr/local/keepalived/bin/

make[1]: Leaving directory`/usr/keepalived-1.1.5/genhash‘

[root@Test0 keepalived-1.1.5]#

keepalive 安裝成功

拷貝相關啟動文件到系統目錄

cp/usr/keepalived-1.3.7/keepalived/etc/init.d/keepalived /etc/init.d/

cp /usr/local/sbin/keepalived /usr/sbin/

cp/usr/keepalived-1.3.7/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

cp -r /usr/keepalived-1.3.7/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/

3檢查腳本

3.1判斷mysql進程

編寫檢查MySQL進程是否存活shell腳本

E:\文檔\linux服務器腳本\check_mysql.bash

1. #!/bin/bash

2. MYSQL=/usr/bin/mysql

3. MYSQL_HOST=localhost

4. MYSQL_USER=root

5. MYSQL_PASSWORD=123

6. CHECK_TIME=3

7. #mysql is working MYSQL_OK is 1 , mysql down MYSQL_OK is 0

8. MYSQL_OK=1

9. function check_mysql_health (){

10. $MYSQL -h $MYSQL_HOST -u $MYSQL_USER -p$MYSQL_PASSWORD -e "show status;" >/dev/null 2>&1

11. if [ $? = 0 ] ;then

12. MYSQL_OK=1

13. else

14. MYSQL_OK=0

15. fi

16. return $MYSQL_OK

17. }

18. while [ $CHECK_TIME -ne 0 ]

19. do

20. let "CHECK_TIME-=1" ##（小提示這裏我們采用的是let進行整數的運算當然您可以用expr，感覺let省去了$比較方便）

21. check_mysql_health

22. if [ $MYSQL_OK = 1 ] ; then

23. CHECK_TIME=0

24. exit 0

25. fi

26.

27. if [ $MYSQL_OK -eq 0 ] && [ $CHECK_TIME -eq 0 ]

28. then

29. /etc/init.d/keepalived stop

30. exit 1

31. fi

32. sleep 1

33. done

3.2判斷防火墻是否打開

1. #! /bin/bash

3. /etc/init.d/iptables stop

4 keepalived配置文件

主庫配置文件

1. ! Configuration File for keepalived

3. global_defs {

4. notification_email {

5. [email protected]

6. }

8. notification_email_from [email protected]

9. smtp_server smtp.163.com

10. smtp_connect_timeout 30

11. router_id LVS_DEVEL

12. vrrp_skip_check_adv_addr

13. vrrp_strict

14. vrrp_garp_interval 0

15. vrrp_gna_interval 0

16. }

17. vrrp_script check_run {

18. script "/home/sh/check_mysql.sh"

19. interval 5

20. }

21.

22. vrrp_instance VI_1 {

23. state MASTER

24. interface eth0

25. virtual_router_id 51

26. priority 100

27. advert_int 1

28. authentication {

29. auth_type PASS

30. auth_pass 1111

31. }

32. virtual_ipaddress {

1. 192.168.98.155/24 dev eth0 label eth0:0

33. }

34. track_script {

35. check_run

36. }

37. notify_master /home/sh/close_iptables.sh

38. notify_backup /home/sh/close_iptables.sh

39. }

備用配置文件

2. ! Configuration File for keepalived

4. global_defs {

5. notification_email {

6. [email protected]

7. }

9. notification_email_from [email protected]

10. smtp_server smtp.163.com

11. smtp_connect_timeout 30

12. router_id LVS_DEVEL

13. vrrp_skip_check_adv_addr

14. vrrp_strict

15. vrrp_garp_interval 0

16. vrrp_gna_interval 0

17. }

18. vrrp_script check_run {

19. script "/home/sh/check_mysql.sh"

20. interval 5

21. }

22.

23. vrrp_instance VI_1 {

24. state BACKUP

25. interface eth0

26. virtual_router_id 51

27. priority 99

28. advert_int 1

29. authentication {

30. auth_type PASS

31. auth_pass 1111

32. }

33. virtual_ipaddress {

34. 192.168.98.155/24 dev eth0 label eth0:0

35. }

36. track_script {

37. check_run

38. }

39. notify_master/home/sh/close_iptables.sh

40. notify_backup /home/sh/close_iptables.sh

41. }

42. virtual_server 192.168.98.155 3306 {

43. delay_loop 2

44. lb_algo wrr

45. lb_kind DR

46. persistence_timeout 60

47. protocol TCP

48. real_server 192.168.98.130 3306 {

49. weight 3

50. TCP_CHECK {

51. connect_timeout 10

52. nb_get_retry 3

53. delay_before_retry 3

54. connect_port 3306

55. }

56. }

57. }

配置完成

5重新啟動keepalived 和mysql

service keepalived start

service mysql start

主設備和從設備做一樣的操作

6查看是否正常綁定了虛擬的IP地址

master(主設備)ifconfig

eth0 Link encap:Ethernet HWaddr00:50:56:26:31:26

inet addr:192.168.98.132 Bcast:192.168.98.255 Mask:255.255.255.0

inet6 addr: fe80::250:56ff:fe26:3126/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:15300 errors:0 dropped:0 overruns:0 frame:0

TX packets:15135 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:2745739 (2.6 MiB) TXbytes:2846628 (2.7 MiB)

eth0:0 Link encap:Ethernet HWaddr 00:50:56:26:31:26

inet addr:192.168.98.155 Bcast:0.0.0.0 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:4322 errors:0 dropped:0 overruns:0 frame:0

TX packets:4322 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:250079 (244.2 KiB) TXbytes:250079 (244.2 KiB)

backup(從設備)ifconfig

eth0 Link encap:Ethernet HWaddr00:0C:29:C3:8D:91

inet addr:192.168.98.130 Bcast:192.168.98.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fec3:8d91/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:15867 errors:0 dropped:0 overruns:0 frame:0

TX packets:7302 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:1913375 (1.8 MiB) TXbytes:1218646 (1.1 MiB)

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:4212 errors:0 dropped:0 overruns:0 frame:0

TX packets:4212 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:235872 (230.3 KiB) TXbytes:235872 (230.3 KiB)

問題3:

發現不能ping 通虛擬IP地址

解決方法:

關閉防火墻

問題4:不能綁定虛擬IP地址

解決方法:

1下載最新版本的keepalived軟件

6測試MySQL自動切換

同時主設備和從設備的MySQL keepalived服務

主設備關閉/開啟

從另外一同網段主機訪問VIP---mysql

[root@Test01 ~]# mysql -umaster -p1111-h192.168.98.155

mysql> show variables like "server_id";

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| server_id | 132 |

+---------------+-------+

1 row in set (0.00 sec)

關閉主設備時,自動切換到備用數據庫

mysql> show variables like "server_id";

+---------------+-------+

| Variable_name | Value |

+---------------+-------+

| server_id | 130 |

+---------------+-------+

1 row in set (0.00 sec)

僅在本地測試環境中使用,生產環境還需要進一步完善

本文出自 “mysql數據庫小節” 博客，請務必保留此出處http://13172370.blog.51cto.com/13162370/1973837

數據庫keepalived部署文檔

mysql 主從復制 keepalived部署一.mysql數據庫RPM安裝包安裝rpm –qa |grep -i mysql //查看是否安裝了數據庫rpm -e 文件名–nodeps //卸載已安裝的文件tar –xzvf ./ MariaDB-10-linux.tar.gz //解壓

數據庫keepalived部署文檔

一.mysql數據庫RPM安裝包安裝

數據庫主從模式

二.主數據庫

1.創建一個復制用戶，具有replication slave 權限。

2.編輯my.cnf文件

3重啟MySQL數據庫

4設置讀寫鎖

5得到binlog日誌和偏移量

6.備份數據庫

2從數據庫

1編輯配置文件

2.重啟數據庫

3.停止復制

出現錯誤:

解決方法:

4檢查主從是否同步正常

5主數據庫查看:

三.數據庫keepalive

1下載keepalived軟件

2配置keppalived

問題:1

解決方法：

問題:2

解決方法:

拷貝相關啟動文件到系統目錄

3檢查腳本

3.1判斷mysql進程

3.2判斷防火墻是否打開

4 keepalived配置文件

5重新啟動keepalived 和mysql

問題3:

解決方法:

問題4:不能綁定虛擬IP地址

解決方法:

6測試MySQL自動切換

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