大家好，我是民工哥。
一提到监控系统，大家很快就能想到Zabbix、Prometheus等，今天，民工哥给大家推荐一款绝不逊色 Zabbix 的监控软件 Librenms。
LibreNMS 介绍
LibreNMS是一个全功能的开源网络监控系统。它用于SNMP从不同设备获取数据。LibreNMS支持各种设备，如Cisco，Linux，FreeBSD，Juniper，Brocade，Foundry，HP等。它支持多种认证机制并支持双因素认证。它有一个可定制的警报系统，可以通过电子邮件提醒网络管理员
LibreNMS 特点
自动发现
警示
多种环境传感器支持
多种协议数据收集(STP，OSPF，BGP等)
VLAN，ARP和FDB表收集
可定制的仪表板
设备集成备份
分布式轮询
多种身份验证方法(MySQL，LDAP，Active Directory，HTTP)
NetFlow，sFlow，IPFIX(NfSen)
服务监控(Nagios插件)
Syslog(集成，Graylog)
流量计费
两要素认证
强大的API
自动更新
LibreNMS 安装环境
请注意，最低支持的PHP版本是7.3
建议使用Nginx 作为web服务器安装必需的软件包yum install epel-release yum-utils
yum localinstall http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum-config-manager --enable remi-php73
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
添加librenms用户useradd librenms -d /opt/librenms -M -r
usermod -a -G librenms nginx
下载LibreNMScd /opt
git clone https://github.com/librenms/librenms.git
设定权限chown -R librenms:librenms /opt/librenms
chmod 770 /opt/librenms
setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/
setfacl -R -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/
chgrp apache /var/lib/php/session/
安装PHP依赖项su - librenms
./scripts/composer_wrapper.php install --no-dev
exit
数据库服务器#配置MySQL
systemctl start mariadb
mysql -u root
#更改初始密码
CREATE DATABASE librenms CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE USER 'librenms'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON librenms.* TO 'librenms'@'localhost';
FLUSH PRIVILEGES;
exit
vi /etc/my.cnf
在此[mysqld]部分中，请添加：
innodb_file_per_table=1
lower_case_table_names=0
systemctl enable mariadb
systemctl restart mariadb
配置并启动PHP-FPM
确保在php.ini中将date.timezone设置为您首选的时区，具体时区请参考：https://php.net/manual/en/tim...vi /etc/php.ini
date.timezone = Asia/Shanghai
在进行/etc/php-fpm.d/www.conf以下更改vi /etc/php-fpm.d/www.conf
;user = apache
user = nginx
group = apache ; keep group as apache
;listen = 127.0.0.1:9000
listen = /run/php-fpm/php-fpm.sock
listen.owner = nginx
listen.group = nginx
listen.mode = 0660
systemctl enable php-fpm
systemctl restart php-fpm
配置NGINXvi /etc/nginx/conf.d/librenms.conf
添加以下配置，server_name根据需要进行编辑：
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;
}
}
systemctl enable nginx
systemctl restart nginx
配置LibreNMS所需的上下文semanage fcontext -a -t httpd_sys_content_t '/opt/librenms/logs(/.*)?'
semanage fcontext -a -t httpd_sys_rw_content_t '/opt/librenms/logs(/.*)?'
restorecon -RFvv /opt/librenms/logs/
semanage fcontext -a -t httpd_sys_content_t '/opt/librenms/rrd(/.*)?'
semanage fcontext -a -t httpd_sys_rw_content_t '/opt/librenms/rrd(/.*)?'
restorecon -RFvv /opt/librenms/rrd/
semanage fcontext -a -t httpd_sys_content_t '/opt/librenms/storage(/.*)?'
semanage fcontext -a -t httpd_sys_rw_content_t '/opt/librenms/storage(/.*)?'
restorecon -RFvv /opt/librenms/storage/
semanage fcontext -a -t httpd_sys_content_t '/opt/librenms/bootstrap/cache(/.*)?'
semanage fcontext -a -t httpd_sys_rw_content_t '/opt/librenms/bootstrap/cache(/.*)?'
restorecon -RFvv /opt/librenms/bootstrap/cache/
setsebool -P httpd_can_sendmail=1
setsebool -P httpd_execmem 1
允许fping
使用以下内容创建文件http_fping.tt。您可以在任何地方创建此文件，因为它是一次性文件。此安装过程的最后一步将把模块安装在正确的位置。module http_fping 1.0;
require {
type httpd_t;
class capability net_raw;
class rawip_socket { getopt create setopt write read };
}
#============= httpd_t ==============
allow httpd_t self:capability net_raw;
allow httpd_t self:rawip_socket { getopt create setopt write read };
然后运行这些命令checkmodule -M -m -o http_fping.mod http_fping.tt
semodule_package -o http_fping.pp -m http_fping.mod
semodule -i http_fping.pp
配置snmpdcp /opt/librenms/snmpd.conf.example /etc/snmp/snmpd.conf
vi /etc/snmp/snmpd.conf
编辑显示的文字RANDOMSTRINGGOESHERE并设置您自己的社区字符串。
curl -o /usr/bin/distro https://raw.githubusercontent.com/librenms/librenms-agent/master/snmp/distro
chmod +x /usr/bin/distro
systemctl enable snmpd
systemctl restart snmpd
Cron jobcp /opt/librenms/librenms.nonroot.cron /etc/cron.d/librenms
logrotate 配置
LibreNMS保留日志/opt/librenms/logs。随着时间的流逝，它们可能会变大并向外旋转。要轮换出旧日志，可以使用提供的logrotate配置文件。cp /opt/librenms/misc/librenms.logrotate /etc/logrotate.d/librenms
Web安装
Web安装程序可能会提示config.php在librenms安装位置需要手动创建文件，这时将Web上显示的内容复制到该文件。然后设置权限。chown librenms:librenms /opt/librenms/config.php
LibreNMS 界面
首页界面
添加设备
创建组
设备列表
启用发现模块
流量监控
磁盘监控
网络图
LibreNMS图表
API 配置
报警规则
