[root@wgq plugins]#
8，查看redis监控服务状态先重新加载nagios，使刚添加的redis监控配置生效
[root@wgq objects]# service nagios reload
Running configuration check...
Reloading nagios configuration...
done
[root@wgq objects]#
redis监控服务界面，如下图所示：
9，操作过程中的报错处理过程
报错：
[root@wgq_line_cache_3_41 plugins]# ./check_redis.pl --help
Can't locate Redis.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at ./check_redis.pl line 421.
BEGIN failed--compilation aborted at ./check_redis.pl line 421.
[root@wgq_line_cache_3_41 plugins]#
[root@wgq_line_cache_3_41 plugins]# perl -MCPAN -e shell
Terminal does not support AddHistory.
cpan shell -- CPAN exploration and modules installation (v1.9402)
Enter 'h' for help.
cpan[1]> install Redis
…
Can't locate Module/Build/Tiny.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at Build.PL line 2.
BEGIN failed--compilation aborted at Build.PL line 2.
Warning: No success on command[/usr/bin/perl Build.PL --installdirs site]
Warning (usually harmless): 'YAML' not installed, will not store persistent state
DAMS/Redis-1.976.tar.gz
/usr/bin/perl Build.PL --installdirs site -- NOT OK
Running Build test
Make had some problems, won't test
Running Build install
Make had some problems, won't install
Could not read '/root/.cpan/build/Redis-1.976-Zhz6xI/META.yml'. Falling back to other methods to determine prerequisites……
YAML是以数据为中央的标记语言，其使用ASCII码（如连字符、问号、冒号、逗号等）构造数据块（标量值或哈希码）。和XML相同，YAML也是一种机器可识别语言，并能和多种脚本语言相结合，其中一种便是Perl，需要安装YAML，如下执行：
cpan[2]>install YAML
……
Appending installation info to /usr/lib64/perl5/perllocal.pod
INGY/YAML-1.12.tar.gz
/usr/bin/make install -- OK
CPAN: YAML loaded ok (v1.12)
PS：这里可能会安装失败，失败原因是网络连接，可以多执行几次install YAML就会成功。
再继续执行install Redis，有如下提示信息
cpan[4]> install Redis
Running install for module 'Redis'
Running Build for D/DA/DAMS/Redis-1.976.tar.gz
Has already been unwrapped into directory /root/.cpan/build/Redis-1.976-cUL4rt
'/usr/bin/perl Build.PL --installdirs site' returned status 512, won't make
Running Build test
Make had some problems, won't test
Running Build install
Make had some problems, won't install
cpan[5]>
Build失败，Build.PL故障了，需要重新安装下执行命令install Build
cpan[5]> install Build
成功后，再执行install Redis
cpan[6]> install Redis
Redis安装执行成功。
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参考文档：http://exchange.nagios.org/directory/Plugins/Databases/check_redis-2Epl/details