上線的伺服器有時會被人攻擊，導致服務不可用，今天安裝配置了nagios對上線伺服器進行監控，簡單記錄一下
#安裝必要的軟體包接下來配置apacheyum install -y gcc glibc glibc-common gd gd-devel xinetd openssl-devel
#建立nagios使用者及授予目錄許可權
useradd -s /sbin/nologin nagios
mkdir /usr/local/nagios
chown -r nagios.nagios /usr/local/nagios
#安裝nagios tar xf nagios-4.0.7.tar.gz cd nagios-4.0.7 ./configure --prefix=/usr/local/nagios make all make install && make install-init && make install-commandmode && make install-config chkconfig --add nagios && chkconfig --level 35 nagios on && chkconfig --list nagios #安裝nagios-plugins tar xf nagios-plugins-2.0.2.tar.gz cd nagios-plugins-2.0.2 ./configure --prefix=/usr/local/nagios make && make install #安裝apache tar xf httpd-2.2.23.tar.gz cd httpd-2.2.23 ./configure --prefix=/usr/local/apache2 make && make install #安裝php tar xf php-5.5.13.tar.gz cd php-5.5.13 ./configure --prefix=/usr/local/php --with-apxs2=/usr/local/apache2/bin/apxs make && make install
#生成nagios密碼檔案接下來配置nagiosscriptalias /nagios/cgi-bin "/usr/local/nagios/sbin" "/usr/local/nagios/sbin"> authtype basic options execcgi allowoverride none order allow,deny allow from all authname "nagios access" authuserfile /usr/local/nagios/etc/htpasswd //用於此目錄訪問身份驗證的檔案 require valid-user alias /nagios "/usr/local/nagios/share" "/usr/local/nagios/share"> authtype basic options none allowoverride none order allow,deny allow from all authname "nagios access" authuserfile /usr/local/nagios/etc/htpasswd require valid-user
#啟動apache vim /etc/init.d/httpd #!/bin/sh # # startup script for the apache web server # # chkconfig: 345 85 15 # description: apache is a world wide web server. it is used to serve \ # html files and cgi. # processname: httpd # pidfile: /usr/local/apache2/logs/httpd.pid # config: /usr/local/apache2/conf/httpd.conf # source function library. . /etc/rc.d/init.d/functions # see how we were called. case "$1" in start) echo -n "starting httpd: " daemon /usr/local/apache2/bin/httpd -dssl echo touch /var/lock/subsys/httpd ;; stop) echo -n "shutting down http: " killproc httpd echo rm -f /var/lock/subsys/httpd rm -f /usr/local/apache2/logs/httpd.pid ;; status) status httpd ;; restart) $0 stop $0 start ;; reload) echo -n "reloading httpd: " killproc httpd -hup echo ;; *) echo "usage: $0 " exit 1 esac exit 0 chmod +x /etc/init.d/httpd chkconfig httpd on /etc/init.d/httpd start
#確保admin使用者登入後有許可權檢視資訊剛才發現nagios監控到伺服器異常也沒有發郵件通知，查了一下，還需要配置mail命令可傳送郵件vim /usr/local/nagios/etc/cgi.cfg
...default_user_name=admin
authorized_for_system_information=nagiosadmin,admin
authorized_for_configuration_information=nagiosadmin,admin
authorized_for_system_commands=admin
authorized_for_all_services=nagiosadmin,admin authorized_for_all_hosts=nagiosadmin,admin authorized_for_all_service_commands=nagiosadmin,admin authorized_for_all_host_commands=nagiosadmin,admin ... #修改nagios主配置檔案，將主機的定義都放在/usr/local/nagios/etc/hosts目錄中 mkdir /usr/local/nagios/etc/hosts vim /usr/local/nagios/etc/nagios.cfg ... cfg_dir=/usr/local/nagios/etc/hosts ... #新增乙個自定義命令 vim /usr/local/nagios/etc/objects/command.cfg ... # 'check_custom_http' command definition define command # 'check_dns' command definition define command ... #定義主機組 vim /usr/local/nagios/etc/hosts/group.cfg define hostgroup #定義主機server1 vim /usr/local/nagios/etc/hosts/server1.cfg define host define service ;需要做好本機使用的dns設定，在/etc/resolv.conf檔案中定義 define service define service define service #配置監控出現問題時要通知的聯絡人 vim /usr/local/nagios/etc/objects/contacts.cfg define contact define contact define contactgroup 重啟nagios /etc/init.d/nagios restart
yum install mail
vim /etc/mail.rc
...set [email protected]
set smtp=smtp.abc.com set [email protected] set smtp-auth-password=somepwd set smtp-auth=login ...
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