MySQL5.7热备份-xtrabackup

热备份
1 xtrabackup下载

wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.9/binary/tarball/percona-xtrabackup-2.4.9-Linux-x86_64.tar.gz[root@Master_test ~]# lltotal 88192-rw-------. 1 root root     1201 Feb 16  2017 anaconda-ks.cfg-rw-r--r--. 1 root root     9913 Feb 16  2017 install.log-rw-r--r--. 1 root root     3161 Feb 16  2017 install.log.syslog-rw-r--r--. 1 root root 90282874 Nov 23  2017 percona-xtrabackup-2.4.9-Linux-x86_64.tar.gz

2 目录结构

[root@Master_test bin]# lltotal 212008lrwxrwxrwx. 1 root root        10 Jul  6 23:21 innobackupex -> xtrabackup-rwxr-xr-x. 1 root root   5357661 Nov 23  2017 xbcloud-rwxr-xr-x. 1 root root      3020 Nov 23  2017 xbcloud_osenv-rwxr-xr-x. 1 root root   5270021 Nov 23  2017 xbcrypt-rwxr-xr-x. 1 root root   5344286 Nov 23  2017 xbstream-rwxr-xr-x. 1 root root 201111701 Nov 23  2017 xtrabackup[root@Master_test bin]# pwd/root/percona-xtrabackup-2.4.9-Linux-x86_64/bin[root@Master_test bin]# 

说明：
innobackupex 是要使用的备份工具
xtrabackup是被封装在innobackupex之中，，innobackupex运行时需要调用它。

3 创建测试数据库和表

root@Master 23:59:  [(none)]> create database db1;Query OK, 1 row affected (0.08 sec)root@Master 23:59:  [(none)]> use db1Database changedroot@Master 23:59:  [db1]> root@Master 23:59:  [db1]> create table  t1(id int,name varchar(20));Query OK, 0 rows affected (0.08 sec)root@Master 00:00:  [db1]> desc t1;+-------+-------------+------+-----+---------+-------+| Field | Type        | Null | Key | Default | Extra |+-------+-------------+------+-----+---------+-------+| id    | int(11)     | YES  |     | NULL    |       || name  | varchar(20) | YES  |     | NULL    |       |+-------+-------------+------+-----+---------+-------+root@Master 00:00:  [db1]> root@Master 00:00:  [db1]> insert into t1(id, name) values(1,'zhangsan');Query OK, 1 row affected (0.00 sec)root@Master 00:01:  [db1]> insert into t1(id, name) values(2,'lisi');Query OK, 1 row affected (0.00 sec)root@Master 00:01:  [db1]> insert into t1(id, name) values(3,'wangwu');Query OK, 1 row affected (0.00 sec)root@Master 00:01:  [db1]> select * from t1;+------+----------+| id   | name     |+------+----------+|    1 | zhangsan ||    2 | lisi     ||    3 | wangwu   |+------+----------+3 rows in set (0.00 sec)

4 全量备份

1)执行报错

[root@Master_test bin]# ./innobackupex --user=root --password-root --defaults-file=/etc/my.cnf /bak./innobackupex: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by ./innobackupex)'

2)解决错误
呈现该错误的原因是当前的GCC版本中，没有GLIBCXX_3.4.15，须要安装更高版本

[root@Master_test bin]# strings /usr/lib64/libstdc++.so.6 | grep GLIBCXXGLIBCXX_3.4GLIBCXX_3.4.1GLIBCXX_3.4.2GLIBCXX_3.4.3GLIBCXX_3.4.4GLIBCXX_3.4.5GLIBCXX_3.4.6GLIBCXX_3.4.7GLIBCXX_3.4.8GLIBCXX_3.4.9GLIBCXX_3.4.10GLIBCXX_3.4.11GLIBCXX_3.4.12GLIBCXX_3.4.13GLIBCXX_FORCE_NEWGLIBCXX_DEBUG_MESSAGE_LENGTH

可见没有GLIBCXX_3.4.15.

3)下载libstdc
新版本，地址：
32bit
http://ftp.de.debian.org/debian/pool/main/g/gcc-4.7/libstdc++6_4.7.2-5_i386.deb
64bit
http://ftp.de.debian.org/debian/pool/main/g/gcc-4.7/libstdc++6_4.7.2-5_amd64.deb

4)安装libstdc

[root@Master_test ~]# wget  http://ftp.de.debian.org/debian/pool/main/g/gcc-4.7/libstdc++6_4.7.2-5_amd64.deb解压：[root@Master_test ~]# ar -x libstdc++6_4.7.2-5_amd64.deb  && tar xvf data.tar.gz./usr/./usr/share/./usr/share/doc/./usr/lib/./usr/lib/x86_64-linux-gnu/./usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17./usr/share/doc/libstdc++6./usr/lib/x86_64-linux-gnu/libstdc++.so.6

5)安装步骤
切到解决后的目录，把libstdc++.so.6.0.17拷贝到系统的/usr/lib64下，然后删除原libstdc++.so.6，把libstdc++.so.6.0.17，软链接为libstdc++.so.6。

cd /root/usr/lib/x86_64-linux-gnu[root@Master_test x86_64-linux-gnu]# lltotal 972lrwxrwxrwx. 1 root root     19 Jul  7 01:18 libstdc++.so.6 -> libstdc++.so.6.0.17-rw-r--r--. 1 root root 991600 Jan  7  2013 libstdc++.so.6.0.17cp libstdc++.so.6.0.17 /usr/lib64cd /usr/lib64rm libstdc++.so.6ln libstdc++.so.6.0.17 libstdc++.so.6检查一下[root@Master_test x86_64-linux-gnu]# strings /usr/lib64/libstdc++.so.6 | grep GLIBCXX  GLIBCXX_3.4GLIBCXX_3.4.1GLIBCXX_3.4.2GLIBCXX_3.4.3GLIBCXX_3.4.4GLIBCXX_3.4.5GLIBCXX_3.4.6GLIBCXX_3.4.7GLIBCXX_3.4.8GLIBCXX_3.4.9GLIBCXX_3.4.10GLIBCXX_3.4.11GLIBCXX_3.4.12GLIBCXX_3.4.13GLIBCXX_3.4.14GLIBCXX_3.4.15GLIBCXX_3.4.16GLIBCXX_3.4.17GLIBCXX_DEBUG_MESSAGE_LENGTH已经有了GLIBCXX_3.4.15。

5 执行全量备份
--user:连接数据库的用户名
--password:连接数据的密码
--defaults-file:配置文件(必须放在最前面，否则会报错)
/bak:备份文件的位置

[root@Master_test bin]# ./innobackupex  --defaults-file=/etc/my.cnf --user=root --password=root /bak180707 01:28:04 innobackupex: Starting the backup operationIMPORTANT: Please check that the backup run completes successfully.           At the end of a successful backup run innobackupex           prints "completed OK!".180707 01:28:04  version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;port=3306;mysql_socket=/tmp/mysql.sock' as 'root'  (using password: YES).Failed to connect to MySQL server as DBD::mysql module is not installed at - line 1327.180707 01:28:04 Connecting to MySQL server host: localhost, user: root, password: set, port: 3306, socket: /tmp/mysql.sockUsing server version 5.7.22-log./innobackupex version 2.4.9 based on MySQL server 5.7.13 Linux (x86_64) (revision id: a467167cdd4)xtrabackup: uses posix_fadvise().xtrabackup: cd to /data/mysql/mysql3306/dataxtrabackup: open files limit requested 65535, set to 65535xtrabackup: using the following InnoDB configuration:xtrabackup:   innodb_data_home_dir = .xtrabackup:   innodb_data_file_path = ibdata1:1G:autoextendxtrabackup:   innodb_log_group_home_dir = ./xtrabackup:   innodb_log_files_in_group = 2xtrabackup:   innodb_log_file_size = 1073741824xtrabackup: using O_DIRECTInnoDB: Number of pools: 1180707 01:28:05 >> log scanned up to (2597729)xtrabackup: Generating a list of tablespacesInnoDB: Allocated tablespace ID 24 for db1/t1, old maximum was 0180707 01:28:05 [01] Copying ./ibdata1 to /bak/2018-07-07_01-28-04/ibdata1180707 01:28:06 >> log scanned up to (2597729)180707 01:28:07 >> log scanned up to (2597729)180707 01:28:08 >> log scanned up to (2597729)省略中间信息*****************************************************************180707 01:28:45 [01] Copying ./sys/statements_with_sorting.frm to /bak/2018-07-07_01-28-04/sys/statements_with_sorting.frm180707 01:28:45 [01]        ...done180707 01:28:45 [01] Copying ./sys/x@0024ps_digest_95th_percentile_by_avg_us.frm to /bak/2018-07-07_01-28-04/sys/x@0024ps_digest_95th_percentile_by_avg_us.frm180707 01:28:45 [01]        ...done180707 01:28:45 >> log scanned up to (2597729)180707 01:28:45 [01] Copying ./sys/x@0024wait_classes_global_by_avg_latency.frm to /bak/2018-07-07_01-28-04/sys/x@0024wait_classes_global_by_avg_latency.frm180707 01:28:45 [01]        ...done180707 01:28:45 Finished backing up non-InnoDB tables and files180707 01:28:45 [00] Writing /bak/2018-07-07_01-28-04/xtrabackup_binlog_info180707 01:28:45 [00]        ...done180707 01:28:45 Executing FLUSH NO_WRITE_TO_BINLOG ENGINE LOGS...xtrabackup: The latest check point (for incremental): '2597720'xtrabackup: Stopping log copying thread..180707 01:28:45 >> log scanned up to (2597729)180707 01:28:46 Executing UNLOCK TABLES180707 01:28:46 All tables unlocked180707 01:28:46 [00] Copying ib_buffer_pool to /bak/2018-07-07_01-28-04/ib_buffer_pool180707 01:28:46 [00]        ...done180707 01:28:46 Backup created in directory '/bak/2018-07-07_01-28-04/'MySQL binlog position: filename 'mybinlog.000003', position '1311', GTID of the last change 'fe259816-8122-11e8-ab02-000c29fa3266:1-6'180707 01:28:46 [00] Writing /bak/2018-07-07_01-28-04/backup-my.cnf180707 01:28:46 [00]        ...done180707 01:28:46 [00] Writing /bak/2018-07-07_01-28-04/xtrabackup_info180707 01:28:46 [00]        ...donextrabackup: Transaction log of lsn (2597720) to (2597729) was copied.180707 01:28:46 completed OK!