innobackupex安装 详解

最近做mysql数据库备份，尝试热备，使用了innobackupex ，总结一下安装的过程。

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　　首先下载安装包：http://www.percona.com/downloads/XtraBackup/。根据系统下载对应的安装包，我的是ubuntu16，所以下载的percona-xtrabackup-24_2.4.8-1.xenial_amd64.deb
　　

1. 执行 sudo dpkg -i percona-xtrabackup-24_2.4.8-1.xenial_amd64.deb
   　其中dpkg -i是deb 文件的执行命令。 语句执行后应该会报错，不用担心 ，缺少依赖了，错误如下：
   　

Selecting previously unselected package percona-xtrabackup-24.
(Reading database ... 65953 files and directories currently installed.)
Preparing to unpack percona-xtrabackup-24_2.4.8-1.xenial_amd64.deb ...
Unpacking percona-xtrabackup-24 (2.4.8-1.xenial) ...
dpkg: dependency problems prevent configuration of percona-xtrabackup-24:
percona-xtrabackup-24 depends on libdbd-mysql-perl; however:
Package libdbd-mysql-perl is not installed.
percona-xtrabackup-24 depends on libcurl3 (>= 7.16.3); however:
Package libcurl3 is not installed.
percona-xtrabackup-24 depends on libev4 (>= 1:4.04); however:
Package libev4 is not installed.

dpkg: error processing package percona-xtrabackup-24 (--install):
dependency problems - leaving unconfigured
Processing triggers for man-db (2.7.5-1) ...
Errors were encountered while processing:
percona-xtrabackup-24

2.根据报错提示，尝试安装缺少的依赖包，执行了语句： sudo apt-get install libev4：
语句执行后仍然报错：

Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
percona-xtrabackup-24 : Depends: libdbd-mysql-perl but it is not going to be installed
Depends: libcurl3 (>= 7.16.3) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

３. 继续根据报错提示执行 语句：sudo apt-get -f install
这条语句执行后，依赖补全了。
４．sudo dpkg -i percona-xtrabackup-24_2.4.8-1.xenial_amd64.deb
再次执行安装语句，安装成功了。

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后面的文章再加上备份的脚本及执行的相关内容。