nagios 监控memcached
nagios 监控memcached 的方法及其配置nagios 监控memcached 的方法分别有，
1 通过telnet来查看memcached 的状态
2 是通过nagios 的自己的插件httpd_tcp 来监控memcached
3通过Nagios-Plugins-Memcached 来监控memcached，
第一 通过telnet 来监控memcached
#telnet 192.168.2.186 11211
Trying 192.168.2.186...
Connected to 192.168.2.186 (192.168.2.186).
Escape character is '^]'.
stats
STAT pid 437
STAT uptime 74825
STAT time 1290149053
STAT version 1.4.5
STAT pointer_size 32
STAT rusage_user 0.006998
STAT rusage_system 0.017997
STAT curr_connections 5
STAT total_connections 52
STAT connection_structures 6
STAT cmd_get 0
STAT cmd_set 0
STAT cmd_flush 0
STAT get_hits 0
STAT get_misses 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 348
STAT bytes_written 36417
STAT limit_maxbytes 419430400
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT evictions 0
STAT reclaimed 0
END
这是通过telnet 监控memcached 的
第二．是用nagios的check_tcp 来进行监控memcached 但是他返回的信息和用上一种方法基本是像是
# check_tcp -H 192.168.2.186 -p 11211 -t 5 -E -s 'stats\r\nquit\r\n' -e 'uptime' -M crit
TCP OK - 0.002 second response time on port 11211 [STAT pid 437
STAT uptime 75179
STAT time 1290149407
STAT version 1.4.5
STAT pointer_size 32
STAT rusage_user 0.006998
STAT rusage_system 0.017997
STAT curr_connections 5
STAT total_connections 56
STAT connection_structures 7
STAT cmd_get 0
STAT cmd_set 0
STAT cmd_flush 0
STAT get_hits 0
STAT get_misses 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 395
STAT bytes_written 38793
STAT limit_maxbytes 419430400
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT evictions 0
STAT reclaimed 0
END]|time=0.002360s;;;0.000000;5.000000
再次没有定义在nagios的配置文件中，如果想用该方法监控memcached 的同时，需要定义一下该命令，才能应用该命令
第三配置用Nagios-Plugins-Memcached 进行监控memcached。但是由于该插件是用prel 进行开发的所以系统上必须要安装Perl 环境，并且同时保证呢个该服务器能上网， cpanplugin 安装
CPAN的使用
默认情况下使用cpan命令安装时，如果依赖其他的软件包时cpan就会停止，但是如果使用CPANPLUS来进行安装时，就能能自动安装依赖项的模板
#cpan CPANPLUS
Are you ready for manual configuration?
CPAN build and cache directory?
Cache size for build directory (in MB)?
Perform cache scanning (atstart or never)?
Cache metadata (yes/no)?
Your terminal expects ISO-8859-1 (yes/no)?
File to save your history?
Number of lines to save?
Policy on building prerequisites (follow, ask or ignore)?
Where is your gzip program?
Where is your tar program?
Where is your unzip program?
Where is your make program?
Where is your links program?
Where is your wget program?
Warning: ncftpget not found in PATH
Where is your ncftpget program? []
Warning: ncftp not found in PATH
Where is your ncftp program? []
Where is your ftp program?
Where is your gpg program?
What is your favorite pager program?
What is your favorite shell?
Select your continent (or several nearby continents) [] 2 注： 这是选择地区
Select your country (or several nearby countries) [] 1 注：这选国家
2 首先下载Nagios-Plugins-Memcached-0.02.tar.gz，解压
wget http://search.cpan.org/CPAN/authors/id/Z/ZI/ZIGOROU/Nagios-Plugins-Memcached-0.02.tar.gz
#tar xvf Nagios-Plugins-Memcached-0.02.tar.gz
3 安装
#cd Nagios-Plugins-Memcached-0.0.2
#perl Makefile.pl
*** Module::AutoInstall version 1.03
*** Checking for Perl dependencies...
- Carp::Clan ...missing.
- Cache::Memcached ...missing.
- FindBin ...loaded. (1.47)
- Nagios::Plugin ...missing.
- Time::HiRes ...loaded. (1.9717)
==> Auto-install the 3 mandatory module(s) from CPAN?
#make install
4 查找安装后的check_memcached 的插件，并把该插件拷贝到nagios的插件的目录下面
#whereis check_memcached
#cp /usr/bin/check_memcached /usr/local/nagios/libexec
#chmod +x /usr/local/nagios/libexec/check_memcached
5 当然在用nagios 进行监控memcached 的方法方法分别是
首先定命令在nagios 命令文件command.cfg后面添加一下
define command{
command_name check_memcached_response
command_line $USER1$/check_memcached -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$
}
define command{
command_name check_memcached_size
command_line $USER1$/check_memcached -H $HOSTADDRESS$ --size-warning $ARG1$ --size-critical $ARG2$
}
define command{
command_name check_memcached_hit
command_line $USER1$/check_memcached -H $HOSTADDRESS$ --hit-warning $ARG1$ --hit-critical $ARG2$
}
6 定义主机
define host{
use linux-box-remote
host_name linux186
alias Memcache
address 192.168.2.186
}
define service{
use generic-service
host_name linux186
service_description Memcached
check_command check_memcached_response!30!40
}
define service{
use generic-service
host_name linux186
service_description Memcached_size
check_command check_memcached_size!30!40
}
define service{
use generic-service
host_name linux186
service_description Memcached_hit
check_command check_memcached_hit!40!30
}
#/usr/local/nagios/bin/nagio -v /usr/local/nagios/etc/nagios.cfg
检测配置文件是不是有错误，如果没有错误，并重启nagios
http://blog.运维网.com/attachment/201011/163300576.png
当然可以用nagios 的nrpe 进行监控memcached
参照的blog：
http://hi.baidu.com/%C2%ED%B3%A4%D5%F72008/blog/item/e446316cc2bb6df64316949c.html
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