通过LVM备份mysql数据库脚本

1. #!/bin/bash
2. #********************************************************************
3. #encoding -*-utf8-*-
4. #Author: zhangshang
5. #URL: http://blog.vservices.top/myblog
6. #Description： To backup mysql databases
7. #QQ Numbers: 765030447
8. #********************************************************************
10. ARGV=`getopt -o d:b:l:v:h -l dbpath:,backpath:,dblvm:,dbvg:,help,binlog: -n test.sh -- "$@"`
11. eval set --"$ARGV"
12. while true
13. do
14. case "$1" in
15. -d|--dbpath)
16. dbpath="$2"
17. shift
18. ;;
19. -b|--backpath)
20. backpath="$2"
21. shift
22. ;;
23. -l|--dblvm)
24. dblvm="$2"
25. shift
26. ;;
27. -v|--dbvg)
28. dbvg="$2"
29. shift
30. ;;
31. --binlog)
32. binlog="$2"
33. shift
34. ;;
35. -h|--help)
36. echo "
37. This tool can helps you to backup your databases which located on the LVM
40. -d|--dbpath : The path of databases;
41. -b|--backpath : The backup directory
42. -l|--dblvm : The lvm name of which your databases's locate
43. -v|--dbvg : Filling out your vg's name which your database located
44. --binlog : Tar a packege of binlog
45. -h|--help : It helps you to use this tool!
46. "
47. exit 0
48. # shift
49. ;;
50. --)
51. shift
52. break
53. ;;
54. *)
55. echo "Internal error!" ;
56. echo "
57. This tool can helps you to backup your databases which located on the LVM
60. -d|--dbpath : The path of databases;
61. -b|--backpath : The backup directory
62. -l|--dblvm : The lvm name of which your databases's locate
63. -v|--dbvg : Filling out your vg's name which your database located
64. --binlog : Tar a packege of binlog
65. -h|--help : It helps you to use this tool!
66. "
67. exit 0
68. ;;
69. esac
70. shift
71. done
73. #Mysql's configuration
74. dbport='3306'
75. dbpasswd='123123'
76. #dbsock='/var/lib/mysql.sock'
77. dbuser='root'
78. #db_run_cmd="mysql -u$dbuser -p$dbpasswd -S $dbsock -e "
79. db_run_cmd="mysql -u$dbuser -p$dbpasswd -P $dbport -e"
80. current_data=`date +%F`
82. #Test the given options's values
83. function test_argments(){
84. [ -z $1 ]
85. }
87. test_argments $dbpath && dbpath='/var/lib/mysql'
88. test_argments $backpath && backpath='/backup'
89. test_argments $dblvm && dblvm='dblvm'
90. test_argments $dbvg && dbvg='dbvg'
92. #Test the dbpath
93. function test_dbpath(){
94. local i=''
95. local count=0
96. for i in `ls -l $dbpath | grep '^d' | awk '{print $9}'`
97. do
98. [ "$i" == 'mysql' ] && let count+=1
99. [ "$i" == 'performance_schema' ] && let count+=1
100. done
101. [ "$count" -lt 2 ] && echo 'There not a dbpath!' && exit 1
102. }
104. test_dbpath
106. #Create a snapshot
107. function mk_snapshot(){
108. eval $db_run_cmd '"FLUSH TABLES WITH READ LOCK;"'
109. [ $? -ne 0 ] && { echo 'Lock tables failed!' ; exit 1; }
110. eval $db_run_cmd '"show binary logs" | tail -n 1 > /$backpath/binlog_position'
111. lvcreate -n sql_data_snapshot -L 2G -s -p r /dev/$dbvg/$dblvm &>/dev/null
112. [ $? -ne 0 ] && echo -e "\033[31msql_data_snapshot already exists! It's meaning that previous copy wasn't completed\033[0m" && exit 1
113. eval $db_run_cmd '"flush logs;"'
114. eval $db_run_cmd '"unlock tables;"'
115. }
117. #Backup the dbdate
118. function bk_db(){
119. mkdir -p $backpath &>/dev/null
120. mkdir -p /snapshot_tmp &>/dev/null
121. mount -o nouuid,norecovery /dev/$dbvg/$dblvm /snapshot_tmp/ &>/dev/null
122. [ $? -ne 0 ] && echo 'mount error!' && exit 1
123. /usr/bin/cp -ra /snapshot_tmp /backup/mariadb_backup.$current_data
124. [ $? -ne 0 ] && echo "\033[31mCopying failed! Please check the harddisk-room. Cleaning the copy-data!\033[0m" && rm -rf /backup/mariadb_backup.$current_data && state=1
125. umount /snapshot_tmp
126. [ $? -ne 0 ] && echo 'Umount error !'
127. cd / && rm -rf /snapshot_tmp
128. }
130. #Remove the snapshot
131. function rm_snapshot(){
132. [ -n "$state" ] && echo -e "\033[31mThe databases's snapshot has't been remove! Don't forget to use this command \033[0m\033[32m\`lvremove -y /dev/$dbvg/sql_data_snapshot \`\033[0m\033[31m to remove it! \033[0m" && exit 1
133. lvremove -y /dev/$dbvg/sql_data_snapshot 1>/dev/null
134. }
136. #Copy the position-file to backup path
137. function cp_positon_file(){
138. /usr/bin/cp $backpath/binlog_position $backpath/mariadb_backup.$current_data/
139. }
141. #Backup the binlog
142. function tar_binlog(){
143. cd $binlog
144. echo -e "\033[31mAs you need ,you can modify the regex!\033[0m"
145. ls | grep '.*bin\.[[:digit:]]\{6\}$' | xargs tar cvzf $backpath/mariadb_backup.$current_data/binlog.$current_data.tar.gz 1>/dev/null
146. [ $? -ne 0 ] && echo '\033[31mCopying failed! Please check the harddisk-room. Cleaning the copy-binlog-data!\033[0m' && rm -rf $backpath/mariadb_backup.$current_data/binlog.$current_data.tar.gz && exit 1
147. }
149. #Begin to starting backup
150. mk_snapshot
151. bk_db
152. rm_snapshot
153. cp_positon_file
154. if [ -n "$binlog" ]
155. then
156. tar_binlog
157. fi