Linux Rsyslog 通过 Nginx Web实现 HTML网页访问 rsysLog

日志是任何软件或操作系统的关键组件。日志通常记录用户的操作、系统事件、网络活动等等，具体取决于它们的用途。Linux 系统上使用最广泛的日志系统之一是rsyslog。

Rsyslog是一个强大、安全和高性能的日志处理系统，它接受来自不同类型源（系统/应用程序）的数据并将其输出为多种格式。

它已经从常规的syslog守护进程发展成为功能齐全的企业级日志系统。它采用客户端/服务器模型设计，因此可以配置为客户端和/或其他服务器、网络设备和远程应用程序的中央日志服务器。

测试环境
出于本指南的目的，我们将使用以下主机测试：

服务器：192.168.108.128
客户端：192.168.108.149/150 + 离线log
CISCO: 交换机配置：

logging trap notifications
logging facility local6
logging source-interface Vlan 192
logging host 192.168.108.128

一、安装和配置 Rsyslog 服务器;

修改计算机名称关闭防火墙：SELINUX=enforcing 修改为 disabled

时区配置，这点很重要：timedatectl set-timezone Asia/Ho_Chi_Minh

[root@Centostest01 ~]# vi /etc/hostname
[root@Centostest01 ~]# systemctl stop firewalld
[root@Centostest01 ~]# systemctl disable firewalld
[root@localhost ~]# vi /etc/selinux/config
[root@localhost ~]# reboot

[root@rsyslog ~]# yum -y install rsyslog
[root@rsyslog ~]# systemctl enable rsyslog
[root@rsyslog ~]# systemctl start rsyslog
[root@rsyslog ~]# systemctl status rsyslog
[root@rsyslog ~]# vi /etc/rsyslog.conf
[root@rsyslog ~]# systemctl restart rsyslog

# rsyslog configuration file

# For more information see /usr/share/doc/rsyslog-*/rsyslog_conf.html
# or latest version online at http://www.rsyslog.com/doc/rsyslog_conf.html
# If you experience problems, see http://www.rsyslog.com/doc/troubleshoot.html

#### GLOBAL DIRECTIVES ####

# Where to place auxiliary files
global(workDirectory="/var/lib/rsyslog")

# Use default timestamp format
module(load="builtin:omfile" Template="RSYSLOG_TraditionalFileFormat")

# Include all config files in /etc/rsyslog.d/
include(file="/etc/rsyslog.d/*.conf" mode="optional")

#### MODULES ####

module(load="imuxsock"    # provides support for local system logging (e.g. via logger command)
       SysSock.Use="off") # Turn off message reception via local log socket;
                          # local messages are retrieved through imjournal now.
module(load="imjournal"             # provides access to the systemd journal
       StateFile="imjournal.state") # File to store the position in the journal
#module(load="imklog") # reads kernel messages (the same are read from journald)
#module(load="immark") # provides --MARK-- message capability

# Provides UDP syslog reception
# for parameters see http://www.rsyslog.com/doc/imudp.html
#module(load="imudp") # needs to be done just once
#input(type="imudp" port="514")

# Provides TCP syslog reception
# for parameters see http://www.rsyslog.com/doc/imtcp.html
#module(load="imtcp") # needs to be done just once
#input(type="imtcp" port="514")

#### RULES ####

# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.*                                                 /dev/console

# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
#*.info;mail.none;authpriv.none;cron.none                /var/log/messages
*.error;mail.none;authpriv.none;cron.none                /var/log/messages

# The authpriv file has restricted access.
authpriv.*                                              /var/log/secure

# Log all the mail messages in one place.
mail.*                                                  -/var/log/maillog


# Log cron stuff
cron.*                                                  /var/log/cron

# Everybody gets emergency messages
*.emerg                                                 :omusrmsg:*

# Save news errors of level crit and higher in a special file.
uucp,news.crit                                          /var/log/spooler

# Save boot messages also to boot.log
local7.*                                                /var/log/boot.log

$FileOwner elk
$FileGroup elk
$FileCreateMode 0755
$DirCreateMode 0755
$Umask 0022

#####开启udp接收日志
$ModLoad imudp
$UDPServerRun 514
$template RemoteHost,"/data/rsyslog/%$YEAR%-%$MONTH%-%$DAY%/%FROMHOST-IP%.log"
*.*  ?RemoteHost
& ~
####开启tcp协议接受日志
$ModLoad imtcp
$InputTCPServerRun 514

$WorkDirectory /var/lib/rsyslog
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
-----------------------------------

# ### sample forwarding rule ###
#action(type="omfwd"
# # An on-disk queue is created for this action. If the remote host is
# # down, messages are spooled to disk and sent when it is up again.
#queue.filename="fwdRule1"       # unique name prefix for spool files
#queue.maxdiskspace="1g"         # 1gb space limit (use as much as possible)
#queue.saveonshutdown="on"       # save messages to disk on shutdown#

二、建立 Rsyslog 数据收集存放的目录：
[root@rsyslog ~]# cd /
[root@rsyslog /]# mkdir data
[root@rsyslog /]# cd data
[root@rsyslog data]# mkdir rsyslog
[root@rsyslog data]# chmod 777 rsyslog

三、安装 Nginx

nginx最新安装方式：


[root@rsyslog ~]# vi /etc/yum.repos.d/nginx.repo

[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

[nginx-mainline]
name=nginx mainline repo
baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/
gpgcheck=1
enabled=0
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

[root@rsyslog ~]# yum install nginx

3.1 添加CentOS 7 Nginx yum资源库：

[root@rsyslog ~]# rpm -Uvh  http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

3.2 安装nginx：

[root@rsyslog ~]# yum -y install nginx

3.3 启动nginx

[root@rsyslog ~]# systemctl enable nginx
[root@rsyslog ~]# systemctl start nginx

3.4 安装完成，可以在浏览器测试访问：

[root@rsyslog ~]# systemctl status nginx
[root@rsyslog ~]# systemctl restart nginx

3.5 编辑 vi /etc/nginx/nginx.conf

[root@rsyslog ~]# vi /etc/nginx/nginx.conf
[root@rsyslog ~]# systemctl restart nginx

server { 
       listen 80; 
       server_name rsyslog.nginx; 
       root /data/rsyslog; 
 
       location /rsyslog { 
         alias /data/rsyslog; 
         autoindex on; 
       } 
}

3.6 可以看到 Nginx 网页访问正常的，但没有生产本机的 rsyslog 重启一下 rsyslog 服务：

3.7 现在从其他 rsyslog 拷贝一些 log 到 /data/rsyslog 目录下看效果：

四、将 HTML 测试网站拷贝到 /usr/share/nginx/html 目录下这个是 nginx 网页目录：

4.1 无法正常访问了，需要配置 nginx.conf 文件

4.2 nginx.conf 配置文件恢复默认后，正常访问

Linux Rsyslog 通过 Nginx Web实现 HTML网页访问 rsysLog

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