自动化运维之系统监控Nagios（一）安装部署
一、系统环境
操作系统：CentOS 7
软件版本：Nagios 4.11 Pnp4nagios 0.6.25
二、部署脚本
安装脚本如下：
#!/bin/sh
#mysql密码
mysqlps=123
#nagios账户密码
nagiospa=123
#nagiosadmin账户密码
nagadps=123
#获取本机IP
hostip=` ip a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $2}'|sed "s%/24%%g" `
#系统配置
systemctl stop firewalld.service
systemctl disable firewalld.service
sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
setenforce 0
yum -y install epel-release expect yum-axelget vim
echo "alias vi='vim'">>/etc/bashrc
echo "alias ll='ls -lh --color=auto'">>/etc/bashrc
echo "set nu">>/etc/vimrc
yum update -y
#安装LAMP
yum -y install httpd mariadb-server mariadb php php-mysql php-gd php-pear
systemctl start httpd
systemctl enable httpd
systemctl start mariadb
systemctl enable mariadb
expect <<EOF
set timeout -1
spawn mysql_secure_installation
expect {
"*(enter for none):" { send "\r"; exp_continue }
"*password:" { send "${mysqlps}\r"; exp_continue }
"*password:" { send "${mysqlps}\r"; exp_continue }
"*users?" { send "Y\r"; exp_continue }
"*remotely?" { send "Y\r"; exp_continue }
"*it?" { send "Y\r"; exp_continue }
"*now?" { send "Y\r"; exp_continue }
}
expect eof
EOF
#安装Nagios
yum install -y gd gd-devel gcc glibc glibc-common openssl openssl-devel openssl-perl unzip wget
useradd -m nagios
expect <<EOF
set timeout -1
spawn passwd nagios
expect {
"*password:" { send "${nagiospa}\r";exp_continue }
"*password:" { send "${nagiospa}\r" }
}
expect eof
EOF
groupadd nagcmd
usermod -a -G nagcmd nagios
usermod -a -G nagcmd apache
cd /tmp
wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.1.1.tar.gz
tar xzf nagios-4.1.1.tar.gz
cd nagios-4.1.1
./configure --with-command-group=nagcmd
make all
make install
make install-init
make install-commandmode
make install-config
make install-webconf
make install-exfoliation
make install-classicui
#安装nagios-plugins、nrpe
yum install -y nagios-plugins* nrpe*
echo -e "#'check_nrpe' command definition
define command{
\tcommand_name check_nrpe
\tcommand_line \$USER1\$/check_nrpe -H \$HOSTADDRESS\$ -c \$ARG1\$
}">>/usr/local/nagios/etc/objects/commands.cfg
sed -i "s/nrpe_user=nrpe/nrpe_user=nagios/g" /etc/nagios/nrpe.cfg
sed -i "s/nrpe_group=nrpe/nrpe_group=nagcmd/g" /etc/nagios/nrpe.cfg
sed -i "s%/usr/local/nagios/libexec%/usr/lib64/nagios/plugins%g" /usr/local/nagios/etc/resource.cfg
#设置nagios Web 访问密码
expect <<EOF
set timeout -1
spawn htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
expect {
"*password:" { send "${nagadps}\r";exp_continue }
"*password:" { send "${nagadps}\r" }
}
expect eof
EOF
#修复假报警
touch /var/www/html/index.html
#安装pnp4nagios
yum -y install php-gd rrdtool-perl rrdtool librrds-perl perl-Time-HiRes
cd /tmp
wget http://nchc.dl.sourceforge.net/project/pnp4nagios/PNP-0.6/pnp4nagios-0.6.25.tar.gz
tar zxvf pnp4nagios-0.6.25.tar.gz
cd pnp4nagios-0.6.25
./configure --with-nagios-user=nagios --with-nagios-group=nagcmd
make all
make fullinstall
sed -i "s%Order allow,deny%Require all granted%g" /etc/httpd/conf.d/pnp4nagios.conf
sed -i "s%Allow from all%%g" /etc/httpd/conf.d/pnp4nagios.conf
cd /usr/local/pnp4nagios/etc
ls|grep sample|awk -F"." '{print $1}'|xargs -i{} mv {}.cfg-sample {}.cfg
cd /usr/local/pnp4nagios/etc/pages
ls|grep sample|awk -F"." '{print $1}'|xargs -i{} mv {}.cfg-sample {}.cfg
cd /usr/local/pnp4nagios/etc/check_commands
ls|grep sample|awk -F"." '{print $1}'|xargs -i{} mv {}.cfg-sample {}.cfg
mv /usr/local/pnp4nagios/share/install.php /usr/local/pnp4nagios/share/install.php.bak
sed -i 's%process_performance_data=0%process_performance_data=1%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%enable_environment_macros=0%enable_environment_macros=1%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#host_perfdata_command%host_perfdata_command%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#service_perfdata_command%service_perfdata_command%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#host_perfdata_file=/usr/local/nagios/var/host-perfdata%host_perfdata_file=/usr/local/pnp4nagios/var/host-perfdata%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#service_perfdata_file=/usr/local/nagios/var/service-perfdata%service_perfdata_file=/usr/local/pnp4nagios/var/service-perfdata%' /usr/local/nagios/etc/nagios.cfg
sed -i '847i host_perfdata_file_template=DATATYPE::HOSTPERFDATA\\tTIMET::\$TIMET\$\\tHOSTNAME::\$HOSTNAME\$\\tHOSTPERFDATA::\$HOSTPERFDATA\$\\tHOSTCHECKCOMMAND::\$HOSTCHECKCOMMAND\$\\tHOSTSTATE::\$HOSTSTATE\$\\tHOSTSTATETYPE::\$HOSTSTATETYPE\$' /usr/local/nagios/etc/nagios.cfg
sed -i '848i service_perfdata_file_template=DATATYPE::SERVICEPERFDATA\\tTIMET::\$TIMET\$\\tHOSTNAME::\$HOSTNAME\$\\tSERVICEDESC::\$SERVICEDESC\$\\tSERVICEPERFDATA::\$SERVICEPERFDATA\$\\tSERVICECHECKCOMMAND::\$SERVICECHECKCOMMAND\$\\tHOSTSTATE::\$HOSTSTATE\$\\tHOSTSTATETYPE::\$HOSTSTATETYPE\$\\tSERVICESTATE::\$SERVICESTATE\$\\tSERVICESTATETYPE::\$SERVICESTATETYPE\$' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#host_perfdata_file_mode%host_perfdata_file_mode%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#service_perfdata_file_mode%service_perfdata_file_mode%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#host_perfdata_file_processing_interval=0%host_perfdata_file_processing_interval=15%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#service_perfdata_file_processing_interval=0%service_perfdata_file_processing_interval=15%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#host_perfdata_file_processing_command%host_perfdata_file_processing_command%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%#service_perfdata_file_processing_command%service_perfdata_file_processing_command%' /usr/local/nagios/etc/nagios.cfg
sed -i 's%process-service-perfdata%psp12%' /usr/local/nagios/etc/objects/commands.cfg
sed -i 's%process-host-perfdata%php12%' /usr/local/nagios/etc/objects/commands.cfg
cat >>/usr/local/nagios/etc/objects/commands.cfg<<-EOF
# Bulk with NPCD mode
#
define command {
command_name process-service-perfdata-file
command_line /bin/mv /usr/local/pnp4nagios/var/service-perfdata /usr/local/pnp4nagios/var/spool/service-perfdata.\$TIMET\$
}
define command {
command_name process-host-perfdata-file
command_line /bin/mv /usr/local/pnp4nagios/var/host-perfdata /usr/local/pnp4nagios/var/spool/host-perfdata.\$TIMET\$
}
EOF
cat >>/usr/local/nagios/etc/objects/templates.cfg<<-EOF
define host {
name host-pnp
action_url /pnp4nagios/index.php/graph?host=\$HOSTNAME\$&srv=_HOST_' class='tips' rel='/pnp4nagios/index.php/popup?host=\$HOSTNAME\$&srv=_HOST_
register 0
}
define service {
name srv-pnp
action_url /pnp4nagios/index.php/graph?host=\$HOSTNAME\$&srv=\$SERVICEDESC\$' class='tips' rel='/pnp4nagios/index.php/popup?host=\$HOSTNAME\$&srv=\$SERVICEDESC\$
register 0
}
EOF
sed -i 's%linux-server%linux-server,host-pnp%' /usr/local/nagios/etc/objects/localhost.cfg
sed -i 's%local-service%local-service,srv-pnp%' /usr/local/nagios/etc/objects/localhost.cfg
sed -i 's%hostgroup_name linux-server,host-pnp%hostgroup_name linux-server%' /usr/local/nagios/etc/objects/localhost.cfg
#重启服务
ln -s /usr/local/nagios/bin/nagios /usr/bin/
nagios -v /usr/local/nagios/etc/nagios.cfg
sleep 3
systemctl start nrpe
systemctl enable nrpe
chkconfig npcd on
systemctl start npcd
chkconfig nagios on
systemctl start nagios
systemctl restart httpd
systemctl status -l npcd
systemctl status -l nrpe
systemctl status -l nagios
systemctl status -l httpd
echo "请访问http://${hostip}/nagios验证配置!!"
部署完成！