centos 5.5 nginx nagios监控端和被控端安装配置指南
一、nagios监控端安装1. nagios安装# wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.2.tar.gz # tar zxvf nagios-3.2.2.tar.gz# cd nagios-3.2.2
# useradd -m -s /bin/bash nagios
# groupadd nagios
# usermod -G nagios nagios
# groupadd nagcmd
# usermod -a -G nagcmd nagios
# usermod -a -G nagcmd www
# ./configure --prefix=/data/nagios --with-command-group=nagcmd
# make
# make all
# make install
# make install-init # 生成init启动脚本
# make install-config # 安装示例配置文件
# make install-commandmode # 设置相应的目录权限
2. nagiox插件安装# wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.15.tar.gz # tar zxvf nagios-plugins-1.4.15.tar.gz
# cd nagios-plugins-1.4.15
# ./configure --with-nagios-user=nagios --with-nagios-group=nagios --prefix=/data/nagios
# make
# make install
3. nrpe安装# tar zxvf nrpe-2.12.tar.gz # cd nrpe-2.12
# ./configure
# make all
# cp src/check_nrpe /data/nagios/libexec/
4. 配置 # 加入系统服务并设为开机自动
# chkconfig --add nagios
# chkconfig nagios on
# mkdir /data/nagios/var/rw # chown nagios.nagios /data/nagios/var/rw
# 测试配置文件可用 # /data/nagios/bin/nagios -v /data/nagios/etc/nagios.cfg
# 取消用户认证(方便调试) # vi /data/nagios/etc/cgi.cfg
找到use_authentication=1并把值改为0
# 修改联系人邮箱 # vi /data/nagios/etc/objects/contacts.cfg
# 定义check_nrpe命令 # vi /data/nagios/etc/objects/commands.cfg
1234define command{ command_name check_nrpe command_line /data/nagios/libexec/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ }# 启动服务 # service nagios start
5. nginx 配置Nginx 的 cgi 支持参见 Nginx fastcgi perl (pl、cgi)支持0102030405060708091011121314151617181920212223242526272829303132333435363738394041424344server { listen 88; server_name_; location / { root /data/nagios/share; indexindex.html index.htm index.php; } location ~ .*.(php|php5)?$ { root /data/nagios/share; fastcgi_pass127.0.0.1:9000; fastcgi_index index.php; include fcgi.conf; } location /nagios { alias /data/nagios/share; } location /cgi-bin/images { alias /data/nagios/share/images; } location /cgi-bin/stylesheets { alias /data/nagios/share/stylesheets; } location /cgi-bin { alias /data/nagios/sbin; } location ~ .*.(cgi|pl)?$ { gzip off; root /data/nagios/sbin; rewrite ^/nagios/cgi-bin/(.*).cgi /$1.cgi break; fastcgi_passunix:/data/nginx/logs/perl-fcgi.sock; fastcgi_index index.cgi; include fcgi.conf; fastcgi_read_timeout 60; } }二、nagios被控端安装配置yum install opensll-devel1. nagios-plugins安装# groupadd nagios # useradd nagios -M -s /sbin/nologin -g nagios
# tar zxvf nagios-plugins-1.4.15.tar.gz
# cd nagios-plugins-1.4.15
# ./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-gourp=nagios && make && make install
2. nrpe安装# tar zxvf nrpe-2.12.tar.gz # cd nrpe-2.12
# ./configure --prefix=/usr/local/nagios && make && make install
3. 配置启动# mkdir -p /usr/local/nagios/etc # cp sample-config/nrpe.cfg /usr/local/nagios/etc/
# vi /usr/local/nagios/etc/nrpe.cfg
修改 allowed_hosts 值为监控端的IP
# 启动nrpe /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
三、监控应用1. 监控Squid下载check_squid脚本,将压缩包里的check_squid解压缩到监控端的/data/nagios/libexec 里# 修改权限 # chmod 755 /data/nagios/libexec/check_squid
# 安装脚本执行的依赖perl模块 # yum -y install perl-libwww-perl
check_squid命令参数Usage: url urluser urlpass proxy proxyport proxyuser proxypass expectstatus url squid dst站点域名 如：http://www.xtgly.com
urluser 目标站点需要认证登录的用户名, 符号"-"代表没有
urlpass 目标站点需要认证登录的用户密码, 符号"-"代表没有
proxy squid cache服务器的IP地址或者域名
proxyport Squid cache服务器监听的端口,默认3128
proxyuser squid cache服务器需要认证登录的用户名, 符号"-"代表没有
proxypass squid cache服务器需要认证登录的用户名, 符号"-"代表没有
expectstatus HTTP协议返回的HTTP code, 符号"2"代表从2开始
# 测试 # /data/nagios/libexec/check_squid http://www.xtgly.com - - 74.82.*.* 80 - - 2
OK - Status: 200 OK
# nagios监控端配置 # vi /data/nagios/etc/objects/commands.cfg 加入
1234define command { command_name check_squid command_line $USER1$/check_squid $ARG1$ $ARG2$ $ARG3$ $HOSTADDRESS$ $ARG4$ $ARG5$ $ARG6$ $ARG7$ }# vi /data/nagios/etc/objects/hosts.cfg 加入010203040506070809101112131415161718define host{ use linux-server host_name 74.82.*.* alias 74.82.*.* address 74.82.*.* } define hostgroup{ hostgroup_name CDN alias CDN Servers members 74.82.*.* } define service{ use generic-service host_name 74.82.*.* service_description Squid check_command check_squid!http://www.xtgly.com!-!-!80!-!-!2 notifications_enabled 0 } 2.监控mysql
添加数据库监控帐号密码
mysql> CREATE USER 'jk'@'127.0.0.1'> mysql> flush privileges;
# vi /data/nagios/etc/objects/commands.cfg 加入
1234define command{command_name check_mysqlcommand_line $USER1$/check_mysql -H $ARG1$ -P $ARG2$ -u $ARG3$ -p $ARG4$ } # vi /data/nagios/etc/objects/hosts.cfg 加入
010203040506070809101112131415161718define host{use linux-serverhost_name 74.82.*.*alias 74.82.*.*address 74.82.*.*} define hostgroup{hostgroup_name 74.82.*.*alias DirectAdminmembers 74.82.*.*} define service{use generic-servicehost_name 74.82.*.*service_description mysqlcheck_command check_mysql!74.82.*.*!3306!ptjk!ptjk3310000notifications_enabled 0 } 3.监控apache状态
apache服务端添加状态显示
12345SetHandler server-status Order deny,allow Deny from all Allow from localhost nagios服务端操作
# 安装终端web浏览器
# yum install lync
# 下载check_apachestatus,并放至/data/nagios/libexec目录下
# cd /data/nagios/libexec
# wget http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=1376&cf_id=24
# mv check_apachestatus.pl check_apachestatus (如果nagios不在/usr/local目录下,注意修改这个脚本里的路径)
# chown nagios:nagios check_apachestatus
# chmod 755 check_apachestatus
# vi /data/nagios/etc/objects/commands.cfg 加入
1234define command{ command_name check_apachestatus command_line $USER1$/check_apachestatus -H $HOSTADDRESS$ -p $ARG1$ } # vi /data/nagios/etc/objects/hosts.cfg 加入
1234567define service{ use generic-service host_name 74.82.*.* service_description http check_command check_apachestatus!81 notifications_enabled 1 } 4.监控rsync
# 下载脚本check_rsync,放至/data/nagios/libexec,注意脚本里的nagios路径需要修改
# cd /data/nagios/libexec
# wget http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=307&cf_id=29
# chown nagios:nagios check_rsync
# chmod 755 check_rsync
# vi /data/nagios/etc/objects/commands.cfg 加入
1234define command{ command_name check_rsync command_line $USER1$/check_rsync -H $HOSTADDRESS$ -p $ARG1$ } # vi /data/nagios/etc/objects/hosts.cfg 加入
1234567define service{ use generic-service host_name 74.82.*.* service_description rsync check_command check_rsync!873 notifications_enabled 1 } 5.监控nginx
# nginx服务端添加状态显示
12345678server { listen 84; server_name _; location / { stub_status on; access_log off; } } # 下载check_nginx,并放至/data/nagios/libexec目录下
# cd /data/nagios/libexec
# wget http://www.nginxs.com/download/check_nginx
# chown nagios:nagios check_nginx
# chmod 755 check_nginx
# vi /data/nagios/etc/objects/commands.cfg 加入
1234define command{ command_name check_nginx command_line $USER1$/check_nginx -U $ARG1$ } # vi /data/nagios/etc/objects/hosts.cfg 加入
1234567define service{ use generic-service host_name 74.82.*.* service_description http check_command check_nginx!74.82.*.*:84 notifications_enabled 1 } 四、nagios cacti npc 整合 (注意php要支持pho-mysql)
# wget http://downloads.sourceforge.net/project/nagios/ndoutils-1.x/ndoutils-1.4b9/ndoutils-1.4b9.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fnagios%2Ffiles%2Fndoutils-1.x%2Fndoutils-1.4b9%2F&ts=1304223824&use_mirror=nchc # tar zxvf ndoutils-1.4b9.tar.gz
# cd ndoutils-1.4b9
# vi include/config.h
找到261行
12#include #include 修改为
12#include #include # ./configure --enable-mysql --disable-pgsql --with-mysql=/data/mysql --with-mysql-lib=/data/mysql/lib
# make
# cp src/ndomod-3x.o /data/nagios/bin/ndomod.o
# cp src/ndo2db-3x /data/nagios/bin/ndo2db
# cp src/log2ndo /data/nagios/bin
# cp src/file2sock /data/nagios/bin
# cp config/ndomod.cfg-sample /data/nagios/etc/ndomod.cfg
# cp config/ndo2db.cfg-sample /data/nagios/etc/ndo2db.cfg
# chown -R nagios:nagios /data/nagios/
# vi /data/nagios/etc/ndomod.cf 主要修改路径,本例如下:
01020304050607080910111213instance_name=default output_type=tcpsocket output=127.0.0.1 tcp_port=5668 use_ssl=0 output_buffer_items=5000 buffer_file=/data/nagios/var/ndomod.tmp file_rotation_interval=14400 file_rotation_timeout=60 reconnect_interval=15 reconnect_warning_interval=15 data_processing_options=-1 config_output_options=2 # vi /data/nagios/etc/ndo2db.cfg 主要修改mysql帐号密码,本例如下:
010203040506070809101112131415161718192021222324lock_file=/data/nagios/var/ndo2db.lock ndo2db_user=nagios ndo2db_group=nagios socket_type=tcp socket_name=/data/nagios/var/ndo.sock tcp_port=5668 use_ssl=0 db_servertype=mysql db_host=localhost db_port=3306 db_name=cacti db_prefix=npc_ db_user=root db_pass=iammysql max_timedevents_age=1440 max_systemcommands_age=10080 max_servicechecks_age=10080 max_hostchecks_age=10080 max_eventhandlers_age=44640 max_externalcommands_age=44640 debug_level=-1 debug_verbosity=2 debug_file=/data/nagios/var/ndo2db.debug max_debug_file_size=1000000 # vi /data/nagios/etc/nagios.cfg 添加以下内容
12345check_external_commands=1 command_check_interval=-1 event_broker_options=-1 broker_module=/data/nagios/bin/ndomod.o config_file=/data/nagios/etc/ndomod.cfg process_performance_data=1 # ln -s /data/mysql/lib/mysql/libmysqlclient.so.16 /usr/lib/
# 启动ndo2db
# /data/nagios/bin/ndo2db -c /data/nagios/etc/ndo2db.cfg
NPC安装 # cd /tmp
# wget http://www.constructaegis.com/downloads/npc-2.0.4.tar.gz
# tar zxvf npc-2.0.4.tar.gz
# mv npc /data/nginx/html/cacti/plugins/
# chown -R www:www /data/nginx/html/
以admin登录cacti,在Plugin Management安装并启用npc插件.进入mysql的cacti数据库,执行以下语句:12345678ALTER TABLE `npc_hostchecks` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_hoststatus` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_servicechecks` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_servicestatus` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_statehistory` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_eventhandlers` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_systemcommands` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`; ALTER TABLE `npc_notifications` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
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