nagios 安装脚本

研究了一段时间nagios，其实安装很简单，但头懒得做，要求脚本啊。。。

#! /usr/bin/env bash# Author: Lawrency Meng# Date: 2013-3-1# Version: v1.0.2# Description: the nagios install sh# dirs contTOP_DIR=`cd $(dirname "$0") && pwd`SRC_DIR="${TOP_DIR}/src"DEPEND="${TOP_DIR}/apt"PLUGIN_DIR="${TOP_DIR}/plugin"ETC_DIR="${TOP_DIR}/etc"NAGIOS_DIR="/usr/local/nagios/"UNTAR_TMP="/tmp/nagios/"PLUGIN_DIR="$NAGIOS_DIR/libexec/"# srcs contCORE_SRC="nagios-3.4.4.tar.gz"NRPE_SRC="nrpe-2.14.tar.gz"PLUGIN_SRC="nagios-plugins-1.4.16.tar.gz"NDOUTILS_SRC="ndoutils-1.5.2.tar.gz"# check the depends in apt filefunction check_depends(){#apt-get update        while read -r line        do            dpkg -l $line > /dev/null || apt-get install -y $line        done < $DEPEND}# check the use inputfunction check_input(){        if [ "x${CHOOSE}" == "x" ]; then                return "ok"        fi        if [[ "${CHOOSE}" =~ (c|C|n|N|p|P|d|D) ]]; then                return "err"        else                return "err"        fi}# check the untar tmp dirfunction check_dir(){        if [ ! -z ${UNTAR_TMP} ]; then                sudo mkdir -p ${UNTAR_TMP}                echo "[Info] Create the untar temp dir ${UNTAR_TMP}"        fi}# create users and groups function create_UG(){        if [ ! `getent passwd nagios` > /dev/null ]; then                echo "[Info] Creating a user called nagios..."                useradd -U -G sudo -s /bin/bash -m nagios                 groupadd nagcmd                usermod -a -G nagcmd www-data                get_sudocp -r $TOP_DIR /home/nagios/chown -R nagios:nagios /home/nagios/        else                echo "[Info] user nagios is exist..."        fi}# give sudo privfunction get_sudo(){        echo "[Info] Giving nagios user passwordless sudo priviledges"        grep -q "^#includedir.*/etc/sudoers.d" /etc/sudoers ||                echo "#includedir /etc/sudoers.d" >> /etc/sudoers            ( umask 226 && echo "nagios ALL=(ALL) NOPASSWD:ALL" \                     > /etc/sudoers.d/50_nagios_sh )}#  switch userfunction switch_user(){chown -R nagios:nagios /usr/local/nagios/}# clean install filesfunction clean(){if [ $1 = 'PLUGIN' ]; thencd ${UNTAR_TMP}/${PLUGIN_SRC/.tar.gz/}make cleanfiif [ $1 = 'NRPE' ]; thencd ${UNTAR_TMP}/${NRPE_SRC/.tar.gz/}make clean[ `iptables --list | grep 'nrpe' > /dev/null` ] && sudo iptables -D INPUT -p tcp -m tcp --dport 5666 -j ACCEPT[ `grep -i 'nrpe' /etc/services > /dev/null` ] && sed -i "/nrpe/ d" /etc/services        [ `grep -i "iptables-restore" /etc/network/interfaces > /dev/null` ] && sed -i "/iptables-restore/ d" /etc/network/interfacesfiif [ $1 = 'CORE' ]; thencd ${UNTAR_TMP}/${CORE_SRC%%-*}make cleanfi}# core install funcfunction core_install(){        switch_user nagios        cd ${SRC_DIR}        check_dir        sudo tar -zxvf ${CORE_SRC} -C ${UNTAR_TMP}  && cd ${UNTAR_TMP}/${CORE_SRC%%-*}        ./configure --with-command-group=nagcmdmake clean        make all        make install && make install-init && make install-config && make install-commandmode        echo "[Info] Install nagios core successfully..."        switch_user root}function nrpe_install(){        switch_user nagios`clean "NRPE"`         cd ${SRC_DIR}        check_dir        sudo tar -xzvf ${NRPE_SRC} -C ${UNTAR_TMP} && cd ${UNTAR_TMP}/${NRPE_SRC/.tar.gz/}        ./configure --with-ssl=/usr/lib/openssl --with-ssl-lib=/usr/lib/x86_64-linux-gnu/ --enable-command-args        make all        make install-plugin && make install-daemon && make install-daemon-config && make install-xinetd        cp -r ${ETC_DIR} ${NAGIOS_DIR}/etc/        sed -i "s/dont_blame_nrpe=0/dont_blame_nrpe=1/g" /usr/local/nagios/etc/nrpe.cfg[ ! `grep -i 'nrpe' /etc/services > /dev/null` ] && echo -e "nrpe\t5666/tcp\t#NRPE" >> /etc/servicesservice xinetd restart[ ! `iptables --list | grep 'nrpe' > /dev/null` ] && sudo iptables -A INPUT -p tcp -m tcp --dport 5666 -j ACCEPTiptables-save[ ! `grep -i "iptables-restore" /etc/network/interfaces > /dev/null` ] && sed -i "/iface eth0/a\\pre-up iptables-restore < /etc/iptables.up.rules" /etc/network/interfaces         [ ! "`netstat -at | grep nrpe`" ] && echo "[info] Install nagios nrpe successfully..."        switch_user root}function plugin_install(){        switch_user`clean "PLUGIN"`        cd ${SRC_DIR}        check_dir        tar -xzvf ${PLUGIN_SRC} -C ${UNTAR_TMP}  && cd ${UNTAR_TMP}/${PLUGIN_SRC/.tar.gz/}        ./configure --with-nagios-user=nagios --with-nagios-group=nagios        make && make installcp ${PLUGIN_DIR}/* /usr/local/nagios/libexec/         [ -d "/usr/local/nagios/libexec" ] && echo "[Info] Install nagios plugin successfully..."        echo "[Info] Nagios plugin default install in dir: /usr/local/nagios/libexec/"        switch_user }function main(){                check_depends        create_UG        while true        do                echo "[Info] Please choose to install nagios modules: "                echo "[c] Nagios core"                 echo "[n] Nagios NRPE"                echo "[p] Nagios plugin"#                echo "[d] Nagios NDOUtils"                echo "[e] exit..."                read -p ">>>>" CHOOSE                case "${CHOOSE}" in                        [cC]) core_install ;;                        [nN]) nrpe_install ;;                        [pP]) plugin_install ;;#                        [dD]) ndoutil_install ;;                        [eE]) exit 0;;                        *) echo "[Err] only accept input [ cC | nN | pP | dD | eE ]" ;;                esac        done}main $@