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219 lines
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itemprop="item" rel="index" title="分类于 Linux"><span itemprop="name">Linux</span></a><meta itemprop="position" content="1"></span><i class="ic i-angle-right"></i> <span itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a href="/categories/Linux/%E6%9C%8D%E5%8A%A1/" itemprop="item" rel="index" title="分类于 服务"><span itemprop="name">服务</span></a><meta itemprop="position" content="2"></span><i class="ic i-angle-right"></i> <span class="current" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a href="/categories/Linux/%E6%9C%8D%E5%8A%A1/%E7%BB%8F%E9%AA%8C%E5%88%86%E4%BA%AB/" itemprop="item" rel="index" title="分类于 经验分享"><span itemprop="name">经验分享</span></a><meta itemprop="position" content="3"></span></div><article itemscope itemtype="http://schema.org/Article" class="post block" lang="zh-CN"><link itemprop="mainEntityOfPage" href="https://blog.jingxiyuan.cn/2022/10/18/%E6%90%AD%E5%BB%BAnagios%E7%9B%91%E6%8E%A7/"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/images/avatar.jpg"><meta itemprop="name" content="Hito li"><meta itemprop="description" content="天下事有难易乎？为之，则难者亦易矣, hito 的博客"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="Hito 的公告栏"></span><div class="body md" itemprop="articleBody"><h4 id="监控端服务安装与配置"><a class="anchor" href="#监控端服务安装与配置">#</a> 监控端服务安装与配置</h4><ol><li>nagios 需要安装主程序和 nrpe（nagios 和各被监控主机都必须安装）。如需使用自研前端可通过安装 ndoutils (用于把 nagios 监控信息写入数据库) 和 mysql 实现。具体安装见<span class="exturl" data-url="aHR0cHM6Ly9zdXBwb3J0Lm5hZ2lvcy5jb20va2Iv">官网</span></li><li>nagios 默认监控命令脚本放置在 libexec 中，自定义脚本也放到此处</li><li>etc/objects/commands.cfg 用于保存 nagios 默认监控命令</li><li>etc/nrpe.cfg 文件中需要添加用于被监控执行命令项（各被监控主机中都需要添加）<br><img data-src="https://file.jingxiyuan.cn/images/2022/10/18/image.png" alt=""></li><li>etc/objects/hosts 目录下配置需要被监控的主机信息<br><img data-src="https://file.jingxiyuan.cn/images/2022/10/18/image2.png" alt=""></li><li>etc/objects/servers 目录下配置需要在被监控主机上执行的监控命令（第 4 项中的命令）<br><img data-src="https://file.jingxiyuan.cn/images/2022/10/18/image3.png" alt=""></li></ol><h4 id="被监控端服务安装与配置"><a class="anchor" href="#被监控端服务安装与配置">#</a> 被监控端服务安装与配置</h4><ol><li>被监控端需要安装 nrpe</li><li>被监控端需要把监控端的命令写入到 nrpe 的配置文件中</li><li>被监控端需要把命令执行脚本放入 libexec 目录中</li><li>被监控端自动安装脚本（可借鉴）</li></ol><pre><code class="language-bash">1、请先修改脚本中的服务端IP。
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2、如被监控端不支持let计算命令请执行sudo dpkg-reconfigure dash命令，弹出选择窗口后选择no。
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3、需要在脚本同目录下创建CentOS、Ubuntu、sh和conf目录，目录下分别放置nrpe的tar安装包、监控脚本和nrpe配置文件。
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#!/bin/bash
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#服务端ip
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SERVER_IP=10.10.10.121
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#安装目录
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INSTALL_HOME=`pwd`
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#安装ubuntu版本
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INSTALL_UBUNTU()
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{
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sudo apt-get update
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sudo apt-get install -y autoconf automake gcc libc6 libmcrypt-dev make libssl-dev wget openssl
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cd /tmp
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#wget --no-check-certificate -O nrpe.tar.gz https://github.com/NagiosEnterprises/nrpe/archive/nrpe-4.0.3.tar.gz
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cp $INSTALL_HOME/Ubuntu/nrpe.tar.gz ./
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tar xzf nrpe.tar.gz
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cd /tmp/nrpe-nrpe-4.0.3/
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sudo ./configure --enable-command-args --with-ssl-lib=/usr/lib/x86_64-linux-gnu/
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sudo make all
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sudo make install-groups-users
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sudo make install
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sudo make install-config
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sudo sh -c "echo >> /etc/services"
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sudo sh -c "sudo echo '# Nagios services' >> /etc/services"
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sudo sh -c "sudo echo 'nrpe 5666/tcp' >> /etc/services"
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#判断系统是高版本还是低版本
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VERSION=`lsb_release -r --short`
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IS_LOW_VERSION=`echo "$VERSION < 15" | bc`
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if [ $IS_LOW_VERSION = 1 ]; then
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#低版本
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sudo make install-init
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else
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#高版本
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sudo make install-init
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sudo systemctl enable nrpe.service
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fi
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sudo mkdir -p /etc/ufw/applications.d
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sudo sh -c "echo '[NRPE]' > /etc/ufw/applications.d/nagios"
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sudo sh -c "echo 'title=Nagios Remote Plugin Executor' >> /etc/ufw/applications.d/nagios"
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sudo sh -c "echo 'description=Allows remote execution of Nagios plugins' >> /etc/ufw/applications.d/nagios"
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sudo sh -c "echo 'ports=5666/tcp' >> /etc/ufw/applications.d/nagios"
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sudo ufw allow NRPE
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sudo ufw reload
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sudo sh -c "sed -i '/^allowed_hosts=/s/$/,$SERVER_IP/' /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "sed -i 's/^dont_blame_nrpe=.*/dont_blame_nrpe=1/g' /usr/local/nagios/etc/nrpe.cfg"
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cd $INSTALL_HOME
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sudo cp ./sh/* /usr/local/nagios/libexec/
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sudo chmod +xr /usr/local/nagios/libexec/*
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sudo sh -c "echo 'command[check_ping]=/usr/local/nagios/libexec/check_ping -H 127.0.0.1 -w 3000.0,80% -c 5000.0,100% -p 5' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_cpu]=/usr/local/nagios/libexec/check_cpu.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_mem]=/usr/local/nagios/libexec/check_mem.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_disk]=/usr/local/nagios/libexec/check_disk.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_my_service]=/usr/local/nagios/libexec/check_my_service.sh \$ARG1\$' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_system_info]=/usr/local/nagios/libexec/check_system_info.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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NETWORK_INDEX=1
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for NETWORK_NAME in `cat /proc/net/dev | awk '{i++; if(i>2){print $1}}' | sed 's/^[\t]*//g' | sed 's/[:]*$//g'`;do
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if [ $NETWORK_NAME != 'lo' ]; then
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sudo sh -c "echo 'command[check_network$NETWORK_INDEX]=/usr/local/nagios/libexec/check_network.sh $NETWORK_NAME' >> /usr/local/nagios/etc/nrpe.cfg"
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NETWORK_INDEX=`expr $NETWORK_INDEX + 1 `
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fi
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done
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if [ $IS_LOW_VERSION = 1 ]; then
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#低版本
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sudo start nrpe
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else
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#高版本
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sudo systemctl start nrpe.service
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fi
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}
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#安装centos版本
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INSTALL_CENTOS()
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{
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yum install -y gcc glibc glibc-common openssl openssl-devel perl wget
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cd /tmp
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#wget --no-check-certificate -O nrpe.tar.gz https://github.com/NagiosEnterprises/nrpe/archive/nrpe-4.0.3.tar.gz
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cp $INSTALL_HOME/CentOS/nrpe.tar.gz ./
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tar xzf nrpe.tar.gz
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cd /tmp/nrpe-nrpe-4.0.3/
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./configure --enable-command-args
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make all
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make install-groups-users
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make install
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make install-config
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echo >> /etc/services
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echo '# Nagios services' >> /etc/services
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echo 'nrpe 5666/tcp' >> /etc/services
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#判断系统是高版本还是低版本
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VERSION=`rpm -q centos-release|cut -d- -f3`
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#安装bc命令
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yum -y install bc
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IS_LOW_VERSION=`echo "$VERSION < 7" | bc`
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if [ $IS_LOW_VERSION = 1 ]; then
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#低版本
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make install-init
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iptables -I INPUT -p tcp --destination-port 5666 -j ACCEPT
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service iptables save
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ip6tables -I INPUT -p tcp --destination-port 5666 -j ACCEPT
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service ip6tables save
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else
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#高版本
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make install-init
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systemctl enable nrpe.service
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firewall-cmd --zone=public --add-port=5666/tcp
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firewall-cmd --zone=public --add-port=5666/tcp --permanent
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fi
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sudo sh -c "sed -i '/^allowed_hosts=/s/$/,$SERVER_IP/' /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "sed -i 's/^dont_blame_nrpe=.*/dont_blame_nrpe=1/g' /usr/local/nagios/etc/nrpe.cfg"
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cd $INSTALL_HOME
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sudo cp ./sh/* /usr/local/nagios/libexec/
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sudo chmod +xr /usr/local/nagios/libexec/*
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sudo sh -c "echo 'command[check_ping]=/usr/local/nagios/libexec/check_ping -H 127.0.0.1 -w 3000.0,80% -c 5000.0,100% -p 5' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_cpu]=/usr/local/nagios/libexec/check_cpu.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_mem]=/usr/local/nagios/libexec/check_mem.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_disk]=/usr/local/nagios/libexec/check_disk.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_my_service]=/usr/local/nagios/libexec/check_my_service.sh \$ARG1\$' >> /usr/local/nagios/etc/nrpe.cfg"
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sudo sh -c "echo 'command[check_system_info]=/usr/local/nagios/libexec/check_system_info.sh' >> /usr/local/nagios/etc/nrpe.cfg"
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NETWORK_INDEX=1
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for NETWORK_NAME in `cat /proc/net/dev | awk '{i++; if(i>2){print $1}}' | sed 's/^[\t]*//g' | sed 's/[:]*$//g'`;do
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if [ $NETWORK_NAME != 'lo' ]; then
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sudo sh -c "echo 'command[check_network$NETWORK_INDEX]=/usr/local/nagios/libexec/check_network.sh $NETWORK_NAME' >> /usr/local/nagios/etc/nrpe.cfg"
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NETWORK_INDEX=`expr $NETWORK_INDEX + 1 `
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fi
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done
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if [ $IS_LOW_VERSION = 1 ]; then
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#低版本
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if [ $(echo "$VERSION < 6" | bc) -eq 1 ]; then
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service nrpe start
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else
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start nrpe
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fi
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else
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#高版本
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systemctl start nrpe.service
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fi
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}
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#安装其它版本
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INSTALL_OTHER()
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{
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echo "Not supported at the moment."
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}
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#根据不同系统安装不同版本
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INSTALL()
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{
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if grep -Eqii "CentOS" /etc/issue || grep -Eq "CentOS" /etc/*-release; then
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DISTRO='CentOS'
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PM='yum'
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INSTALL_CENTOS
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elif grep -Eqi "Red Hat Enterprise Linux Server" /etc/issue || grep -Eq "Red Hat Enterprise Linux Server" /etc/*-release; then
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DISTRO='RHEL'
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PM='yum'
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INSTALL_OTHER
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elif grep -Eqi "Aliyun" /etc/issue || grep -Eq "Aliyun" /etc/*-release; then
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DISTRO='Aliyun'
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PM='yum'
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INSTALL_OTHER
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elif grep -Eqi "Fedora" /etc/issue || grep -Eq "Fedora" /etc/*-release; then
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DISTRO='Fedora'
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PM='yum'
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INSTALL_OTHER
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elif grep -Eqi "Debian" /etc/issue || grep -Eq "Debian" /etc/*-release; then
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DISTRO='Debian'
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PM='apt'
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INSTALL_OTHER
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elif grep -Eqi "Ubuntu" /etc/issue || grep -Eq "Ubuntu" /etc/*-release; then
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DISTRO='Ubuntu'
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PM='apt'
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INSTALL_UBUNTU
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elif grep -Eqi "Raspbian" /etc/issue || grep -Eq "Raspbian" /etc/*-release; then
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DISTRO='Raspbian'
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PM='apt'
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INSTALL_OTHER
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else
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echo "unknow linux."
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exit 1
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fi
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echo $DISTRO
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}
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INSTALL
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exit 0
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</code></pre><h4 id="常见问题"><a class="anchor" href="#常见问题">#</a> 常见问题</h4><ol><li>监控日志未写入 mysql（可能是 ndoutils 服务不正常导致）。采用以下脚本命令解决</li></ol><pre><code class="language-bash">#!/bin/bash
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sudo rm -f /usr/local/nagios/var/ndo2db.pid
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sudo rm -f /usr/local/nagios/var/ndo.sock
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sudo systemctl restart ndo2db.service
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sudo systemctl status ndo2db.service
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</code></pre><div class="tags"><a href="/tags/nagios/" rel="tag"><i class="ic i-tag"></i> nagios</a> <a href="/tags/%E6%9C%8D%E5%8A%A1%E7%9B%91%E6%8E%A7/" rel="tag"><i class="ic i-tag"></i> 服务监控</a></div></div><footer><div class="meta"><span class="item"><span class="icon"><i class="ic i-calendar-check"></i> </span><span class="text">更新于</span> <time title="修改时间：2022-10-19 10:51:51" itemprop="dateModified" datetime="2022-10-19T10:51:51+08:00">2022-10-19</time> </span><span id="2022/10/18/搭建nagios监控/" class="item leancloud_visitors" data-flag-title="搭建 nagios 监控" title="阅读次数"><span class="icon"><i class="ic i-eye"></i> </span><span class="text">阅读次数</span> <span class="leancloud-visitors-count"></span> <span class="text">次</span></span></div><div class="reward"><button><i class="ic i-heartbeat"></i> 赞赏</button><p>请我喝[茶]~(￣▽￣)~*</p><div id="qr"><div><img data-src="/images/wechatpay.png" alt="Hito li 微信支付"><p>微信支付</p></div><div><img data-src="/images/alipay.png" alt="Hito li 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