一、LibreNMS简单介绍
LibreNMS是一个功能齐全的开源网络监控系统，它使用SNMP来获取来自不同设备的数据，LibreNMS支持各种设备如Cisco Linux FreeBSD Juniper Brocade Foundry HP等，它支持多种身份验证机制，并支持双因素身份验证。它有一个可定制的警报系统，可以通过电子邮件，IRC或slack通知网络管理员。
二、LibreNMS特点：
- 它使用这些协议自动发现整个网络：CDP，FDP，LLDP，OSPF，BGP，SNMP和ARP。
- 它有一个移动友好的Web UI，可定制的仪表板。
- 支持一个Unix代理。
- 支持水平缩放以随网络扩展。
- 支持高度灵活和可定制的警报系统; 通过电子邮件，irc，slack等发送通知。
- 支持用于管理，绘制和检索系统数据的API。
- 提供流量计费系统。
- 还支持提供核心功能的Android和iOS应用程序。
- 支持与NfSen，collectd，SmokePing，RANCID和Oxidized的集成。
- 支持多种身份验证方法，例如MySQL，HTTP，LDAP，Radius和Active Directory。
- 允许自动更新和许多其他功能。
在Linux系统上安装 LibreNMS 之前，您可以尝试在线演示。
Demo URL: Username: demoPassword: demo
三、CentOS7下部署LibreNMS
1.关闭selinux
查看状态
#getenforce#/usr/sbin/sestatus
关闭SeLinux
###临时关闭#setenforce 0
修改/etc/selinux/config
2、配置yum源
[root@localhost /]# wget -O /etc/yum.repos.d/CentOS-Base.repo [root@localhost /]# sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo[root@localhost /]# wget -O /etc/yum.repos.d/epel.repo [root@localhost /]# yum clean all[root@localhost /]# yum makecache
3、配置remi-php73源，安装LibreNMS所需的组件
[root@localhost /]# yum install -y yum-utils[root@localhost /]# yum localinstall [root@localhost /]# yum-config-manager --enable remi-php73 [root@localhost /]# yum install composer cronie fping git ImageMagick jwhois mariadb mariadb-server mtr MySQL-python net-snmp net-snmp-utils nginx nmap php-fpm php-cli php-common php-curl php-gd php-mbstring php-process php-snmp php-xml php-zip php-memcached php-mysqlnd python-memcached rrdtool python3 python3-pip python3-devel -y[root@localhost /]# yum install -y zip unzip
4.git下载lirenms最新版本
[root@localhost /]# cd /opt/[root@localhost /]# git clone [root@localhost /]# useradd librenms -d /opt/librenms -M -r[root@localhost /]# usermod -a -G librenms nginx[root@localhost /]# chown -R librenms:librenms /opt/librenms[root@localhost /]# chmod 770 /opt/librenms[root@localhost /]# chgrp apache /var/lib/php/session/
5、切换到librenms用户，配置php环境
[root@localhost opt]# su - librenms-bash-4.2$ ./scripts/composer_wrapper.php install --no-dev-bash-4.2$ exit
6、配置数据库
[root@localhost opt]# systemctl start mariadb[root@localhost opt]# mysqladmin -u root password 'MySQL@2021'[root@localhost opt]# mysql -u root -pMySQL@2021MariaDB [(none)]> CREATE DATABASE librenms CHARACTER SET utf8 COLLATE utf8_unicode_ci;MariaDB [(none)]> CREATE USER 'librenms'@'localhost' IDENTIFIED BY 'librenms@2021';MariaDB [(none)]> GRANT ALL PRIVILEGES ON librenms.* TO 'librenms'@'localhost';MariaDB [(none)]> FLUSH PRIVILEGES;MariaDB [(none)]> exit[root@localhost /]# vim /etc/my.cnf[mysqld]下加入如下两行datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sock[root@localhost /]# systemctl enable mariadb[root@localhost /]# systemctl restart mariadb
7、配置php环境
[root@localhost /]# vim /etc/php.ini 修改时区配置如下[Date]; Defines the default timezone used by the date functions; 第922行 date.timezone =Asia/Shanghai[root@localhost /]# vim /etc/php-fpm.d/www.conf 修改成如下行user = apache 换成 nginxgroup = apache ;listen = 127.0.0.1:9000下面添加listen = /run/php-fpm/php-fpm.socklisten.owner = nginxlisten.group = nginxlisten.mode = 0660[root@localhost /]# systemctl enable php-fpm[root@localhost /]# systemctl restart php-fpm
8、配置nginx
[root@localhost /]# vim /etc/nginx/conf.d/librenms.conf添加server { listen 80; server_name librenms.example.com; root /opt/librenms/html; index index.php; charset utf-8; gzip on; gzip_types text/css application/javascript text/javascript application/x-javascript image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon; location / { try_files $uri $uri/ /index.php?$query_string; } location /api/v0 { try_files $uri $uri/ /api_v0.php?$query_string; } location ~ \.php { include fastcgi.conf; fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_pass unix:/run/php-fpm/php-fpm.sock; } location ~ /\.ht { deny all; }}[root@localhost /]# vim /etc/nginx/nginx.conf禁用# server {# listen 443 ssl http2 default_server;# listen [::]:443 ssl http2 default_server;# server_name _;# root /usr/share/nginx/html;## ssl_certificate "/etc/pki/nginx/server.crt";# ssl_certificate_key "/etc/pki/nginx/private/server.key";# ssl_session_cache shared:SSL:1m;# ssl_session_timeout 10m;# ssl_ciphers HIGH:!aNULL:!MD5;# ssl_prefer_server_ciphers on;## # Load configuration files for the default server block.# include /etc/nginx/default.d/*.conf;## location / {# }## error_page 404 /404.html;# location = /404.html {# }[root@localhost /]# systemctl enable nginx[root@localhost /]# systemctl restart nginx
9、snmpd配置
cp /opt/librenms/snmpd.conf.example /etc/snmp/snmpd.confvi /etc/snmp/snmpd.conf中团体名，例如librenmscom2sec readonly default librenmscurl -o /usr/bin/distro chmod +x /usr/bin/distrosystemctl enable snmpdsystemctl restart snmpd
distro
#!/usr/bin/env sh# Detects which OS and if it is Linux then it will detect which Linux Distribution.OS=`uname -s`REV=`uname -r`MACH=`uname -m`if [ "${OS}" = "SunOS" ] ; then OS=Solaris ARCH=`uname -p` OSSTR="${OS} ${REV}(${ARCH} `uname -v`)"elif [ "${OS}" = "AIX" ] ; then OSSTR="${OS} `oslevel` (`oslevel -r`)"elif [ "${OS}" = "Linux" ] ; then KERNEL=`uname -r` if [ -f /etc/fedora-release ]; then DIST=$(cat /etc/fedora-release | awk '{print $1}') REV=`cat /etc/fedora-release | sed s/.*release\ // | sed s/\ .*//` elif [ -f /etc/redhat-release ] ; then DIST=$(cat /etc/redhat-release | awk '{print $1}') if [ "${DIST}" = "CentOS" ]; then DIST="CentOS" IGNORE_OS_RELEASE=1 # elif [ "${DIST}" = "CloudLinux" ]; then DIST="CloudLinux" elif [ "${DIST}" = "Mandriva" ]; then DIST="Mandriva" PSEUDONAME=`cat /etc/mandriva-release | sed s/.*\(// | sed s/\)//` REV=`cat /etc/mandriva-release | sed s/.*release\ // | sed s/\ .*//` elif [ -f /etc/oracle-release ]; then DIST="Oracle" elif [ -f /etc/rockstor-release ]; then DIST="Rockstor" else DIST="RedHat" fi PSEUDONAME=`cat /etc/redhat-release | sed s/.*\(// | sed s/\)//` REV=`cat /etc/redhat-release | sed s/.*release\ // | sed s/\ .*//` elif [ -f /etc/mandrake-release ] ; then DIST='Mandrake' PSEUDONAME=`cat /etc/mandrake-release | sed s/.*\(// | sed s/\)//` REV=`cat /etc/mandrake-release | sed s/.*release\ // | sed s/\ .*//` elif [ -f /etc/devuan_version ] ; then DIST="Devuan `cat /etc/devuan_version`" REV="" elif [ -f /etc/debian_version ] ; then DIST="Debian `cat /etc/debian_version`" REV="" IGNORE_OS_RELEASE=1 if [ -f /usr/bin/lsb_release ] ; then ID=`lsb_release -i | awk -F ':' '{print $2}' | sed 's/ //g'` fi if [ "${ID}" = "Raspbian" ] ; then DIST="Raspbian `cat /etc/debian_version`" fi if [ -f /usr/bin/pveversion ]; then DIST="${DIST}/PVE `/usr/bin/pveversion | cut -d '/' -f 2`" fi if [ -f /usr/bin/pmgversion ]; then # pmgversion requires root permissions to run, please add NOPASSWD setting to visudo. DIST="${DIST}/PMG `sudo /usr/bin/pmgversion | cut -d '/' -f 2`" fi if [ -f /etc/dogtag ]; then DIST=`cat /etc/dogtag` fi elif [ -f /etc/gentoo-release ] ; then DIST="Gentoo" REV=$(tr -d '[[:alpha:]]' " ") elif [ -f /etc/arch-release ] ; then DIST="Arch Linux" REV="" # Omit version since Arch Linux uses rolling releases IGNORE_LSB=1 # /etc/lsb-release would overwrite $REV with "rolling" elif [ -f /etc/photon-release ] ; then DIST=$(head -1 < /etc/photon-release) REV=$(sed -n -e 's/^.*PHOTON_BUILD_NUMBER=//p' /etc/photon-release) IGNORE_LSB=1 # photon os does not have /etc/lsb-release nor lsb_release elif [ -f /etc/openwrt_version ] ; then DIST="OpenWrt" REV=$(cat /etc/openwrt_version) elif [ -f /etc/pld-release ] ; then DIST=$(cat /etc/pld-release) REV="" elif [ -f /etc/SuSE-release ] ; then DIST=$(echo SLES $(grep VERSION /etc/SuSE-release | cut -d = -f 2 | tr -d " ")) REV=$(echo SP$(grep PATCHLEVEL /etc/SuSE-release | cut -d = -f 2 | tr -d " ")) fi if [ -x "$(command -v awk)" ]; then # some distros do not ship with awk if [ "`uname -a | awk '{print $(NF)}'`" = "DD-WRT" ] ; then DIST="dd-wrt" fi if [ "`uname -a | awk '{print $(NF)}'`" = "ASUSWRT-Merlin" ] ; then DIST="ASUSWRT-Merlin" REV=`nvram show | grep buildno= | egrep -o '[0-9].[0-9].[0-9]'` > /dev/null 2>&1 fi fi # try standardized os version methods if [ -f /etc/os-release -a "${IGNORE_OS_RELEASE}" != 1 ] ; then . /etc/os-release STD_DIST="$NAME" STD_REV="$VERSION_ID" elif [ -f /etc/lsb-release -a "${IGNORE_LSB}" != 1 ] ; then STD_DIST=$(lsb_release -si) STD_REV=$(lsb_release -sr) fi if [ -n "${STD_DIST}" ]; then DIST="${STD_DIST}" fi if [ -n "${STD_REV}" ]; then REV="${STD_REV}" fi if [ -n "${REV}" ]; then OSSTR="${DIST} ${REV}" else OSSTR="${DIST}" fielif [ "${OS}" = "Darwin" ] ; then if [ -f /usr/bin/sw_vers ] ; then OSSTR=`/usr/bin/sw_vers|grep -v Build|sed 's/^.*:.//'| tr "\n" ' '` fielif [ "${OS}" = "FreeBSD" ] ; then if [ -f /etc/version ] ; then DIST=$(cat /etc/version | cut -d'-' -f 1) if [ "${DIST}" = "FreeNAS" ]; then OSSTR=`cat /etc/version | cut -d' ' -f 1` fi else OSSTR=`/usr/bin/uname -mior` fifiecho ${OSSTR}
10、crond配置与logrotated配置
cp /opt/librenms/librenms.nonroot.cron /etc/cron.d/librenmscp /opt/librenms/misc/librenms.logrotate /etc/logrotate.d/librenms
11、登录web界面，添加监控设备，功能界面体验
