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. #********************************************************************
9. ARGV=`getopt -o d:b:l:v:h -l dbpath:,backpath:,dblvm:,dbvg:,help,binlog: -n test.sh -- "$@"`
10. eval set --"$ARGV"
11. while true
12. do
13. case "$1" in
14. -d|--dbpath)
15. dbpath="$2"
16. shift
17. ;;
18. -b|--backpath)
19. backpath="$2"
20. shift
21. ;;
22. -l|--dblvm)
23. dblvm="$2"
24. shift
25. ;;
26. -v|--dbvg)
27. dbvg="$2"
28. shift
29. ;;
30. --binlog)
31. binlog="$2"
32. shift
33. ;;
34. -h|--help)
35. echo "
36. This tool can helps you to backup your databases which located on the LVM
37. -d|--dbpath : The path of databases;
38. -b|--backpath : The backup directory
39. -l|--dblvm : The lvm name of which your databases's locate
40. -v|--dbvg : Filling out your vg's name which your database located
41. --binlog : Tar a packege of binlog
42. -h|--help : It helps you to use this tool!
43. "
44. exit 0
45. # shift
46. ;;
47. --)
48. shift
49. break
50. ;;
51. *)
52. echo "Internal error!" ;
53. echo "
54. This tool can helps you to backup your databases which located on the LVM
55. -d|--dbpath : The path of databases;
56. -b|--backpath : The backup directory
57. -l|--dblvm : The lvm name of which your databases's locate
58. -v|--dbvg : Filling out your vg's name which your database located
59. --binlog : Tar a packege of binlog
60. -h|--help : It helps you to use this tool!
61. "
62. exit 0
63. ;;
64. esac
65. shift
66. done
67. #Mysql's configuration
68. dbport='3306'
69. dbpasswd='123123'
70. #dbsock='/var/lib/mysql.sock'
71. dbuser='root'
72. #db_run_cmd="mysql -u$dbuser -p$dbpasswd -S $dbsock -e "
73. db_run_cmd="mysql -u$dbuser -p$dbpasswd -P $dbport -e"
74. current_data=`date +%F`
75. #Test the given options's values
76. function test_argments(){
77. [ -z $1 ]
78. }
79. test_argments $dbpath && dbpath='/var/lib/mysql'
80. test_argments $backpath && backpath='/backup'
81. test_argments $dblvm && dblvm='dblvm'
82. test_argments $dbvg && dbvg='dbvg'
83. #Test the dbpath
84. function test_dbpath(){
85. local i=''
86. local count=0
87. for i in `ls -l $dbpath | grep '^d' | awk '{print $9}'`
88. do
89. [ "$i" == 'mysql' ] && let count+=1
90. [ "$i" == 'performance_schema' ] && let count+=1
91. done
92. [ "$count" -lt 2 ] && echo 'There not a dbpath!' && exit 1
93. }
94. test_dbpath
95. #Create a snapshot
96. function mk_snapshot(){
97. eval $db_run_cmd '"FLUSH TABLES WITH READ LOCK;"'
98. [ $? -ne 0 ] && { echo 'Lock tables failed!' ; exit 1; }
99. eval $db_run_cmd '"show binary logs" | tail -n 1 > /$backpath/binlog_position'
100. lvcreate -n sql_data_snapshot -L 2G -s -p r /dev/$dbvg/$dblvm &>/dev/null
101. [ $? -ne 0 ] && echo -e "\033[31msql_data_snapshot already exists! It's meaning that previous copy wasn't completed\033[0m" && exit 1
102. eval $db_run_cmd '"flush logs;"'
103. eval $db_run_cmd '"unlock tables;"'
104. }
105. #Backup the dbdate
106. function bk_db(){
107. mkdir -p $backpath &>/dev/null
108. mkdir -p /snapshot_tmp &>/dev/null
109. mount -o nouuid,norecovery /dev/$dbvg/$dblvm /snapshot_tmp/ &>/dev/null
110. [ $? -ne 0 ] && echo 'mount error!' && exit 1
111. /usr/bin/cp -ra /snapshot_tmp /backup/mariadb_backup.$current_data
112. [ $? -ne 0 ] && echo "\033[31mCopying failed! Please check the harddisk-room. Cleaning the copy-data!\033[0m" && rm -rf /backup/mariadb_backup.$current_data && state=1
113. umount /snapshot_tmp
114. [ $? -ne 0 ] && echo 'Umount error !'
115. cd / && rm -rf /snapshot_tmp
116. }
117. #Remove the snapshot
118. function rm_snapshot(){
119. [ -n "$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/$dbvg/sql_data_snapshot \`\033[0m\033[31m to remove it! \033[0m" && exit 1
120. lvremove -y /dev/$dbvg/sql_data_snapshot 1>/dev/null
121. }
122. #Copy the position-file to backup path
123. function cp_positon_file(){
124. /usr/bin/cp $backpath/binlog_position $backpath/mariadb_backup.$current_data/
125. }
126. #Backup the binlog
127. function tar_binlog(){
128. cd $binlog
129. echo -e "\033[31mAs you need ,you can modify the regex!\033[0m"
130. ls | grep '.*bin\.[[:digit:]]\{6\}$' | xargs tar cvzf $backpath/mariadb_backup.$current_data/binlog.$current_data.tar.gz 1>/dev/null
131. [ $? -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.$current_data.tar.gz && exit 1
132. }
133. #Begin to starting backup
134. mk_snapshot
135. bk_db
136. rm_snapshot
137. cp_positon_file
138. if [ -n "$binlog" ]
139. then
140. tar_binlog
141. fi