公司使用CactiEz做为网络监控平台，可以实时监控网络设备及出口流量外加邮件报警，虽然有一个延迟但基本够用。

除此之外，还需要一个日志服务器。因为设备比较多，设备如果断电重启，问题排除还需借助日志。

华为交换机端配置如下：

info-center source default channel 2 log level warning #日志级别，设置为warning警告最为合适

info-center loghost source Vlanif1101 # 源vlan

info-center loghost 192.168.2.2 #syslog服务器地址

CentOS6.8环境下安装rsyslog 与loganalezer日志分析工具

1、做本地源、yum安装相应包、关闭防火墙、安装http

# 做本地yum源

[root@localhost yum.repos.d]# mv *.repo back/

vim /etc/yum.repos.d/media.repo

[media]

name=media

baseurl=file:///media

enabled=1

gpgcheck=0

# 更新本地源

yum clean all

yum makecache

yum repolist

# 关闭Selinux，修改配置文件；关闭iptables

[root@localhost yum.repos.d]# vim/etc/selinux/config 

SELINUX=disabled

[root@localhost yum.repos.d]# getenforce

Enforcing

[root@localhost yum.repos.d]# setenforce 0

[root@localhost yum.repos.d]# getenforce

Permissive

[root@localhost yum.repos.d]#services iptables stop

[root@localhost yum.repos.d]# chkconfig iptables off

# 安装软件包

yum install mysql-server mysql-devel libcurl-devel net-snmp-devel php php-gd php-xml php-mysql httpd –y

# 检查相关包

[root@bogon html]# rpm -qa | grep rsyslog 

|rsyslog-gssapi-5.8.10-10.el6_6.x86_64

rsyslog-mysql-5.8.10-10.el6_6.x86_64

rsyslog-relp-5.8.10-10.el6_6.x86_64

rsyslog-pgsql-5.8.10-10.el6_6.x86_64

rsyslog-gnutls-5.8.10-10.el6_6.x86_64

rsyslog-5.8.10-10.el6_6.x86_64

# 启动http

[root@localhost yum.repos.d]#/etc/init.d/httpd start

[root@localhost yum.repos.d]#chkconfig httpd on

正在启动 httpd：httpd: Could not reliably determine the server‘s fully qualifieddomain name, using localhost.localdomain for ServerName

#测试http运行环境

[root@localhost yum.repos.d] cd /var/www/html/

[root@TS html]# cat > index.php <<EOF 
> <?php 
> phpinfo(); 
> ?> 
> EOF

打开浏览器打开浏览器访问：http://192.168.2.2/index.php

#启动数据库

[root@localhost yum.repos.d]#/etc/init.d/mysqld start

[root@localhost yum.repos.d]#chkconfig mysqld on

#设置mysql密码，查看数据库表

[root@bogon html]# cd /usr/share/doc/rsyslog-mysql-5.8.10/

[root@bogon rsyslog-mysql-5.8.10]# mysql -uroot -pqaz,123 < createDB.sql

[root@bogon ~]# mysql -uroot -p

Enter password: 

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.1.73 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| Syslog             |

| mysql              |

| test               |

+--------------------+

4 rows in set (0.00 sec)

mysql> use Syslog

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> show tables;

+------------------------+

| Tables_in_Syslog       |

+------------------------+

| SystemEvents           |

| SystemEventsProperties |

+------------------------+

2 rows in set (0.00 sec)

# 授权rsyslog往里读写权限并提交更改

mysql> grant all on Syslog.* to rsyslog@localhost identified by ‘adminqaz‘;

Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> exit

Bye

# 修改rsyslog配置文件，开启UDP端口；并使用mysql与rsyslog相关联，

[root@bogon ~]# vim /etc/rsyslog.conf

#新增下面两行

$ModLoad ommysql 
*.* :ommysql:localhost,Syslog,rsyslog,adminqaz

说明：localhost 表示本地主机，Syslog 为数据库名，rsyslog 为数据库的用户，adminqaz为该用户密码。

#开启相关模块

# vi /etc/rsyslog.conf

$ModLoad immark    #immark是模块名，支持日志标记

$ModLoad imudp    #imupd是模块名，支持udp协议

$UDPServerRun 514    #允许514端口日志

# 重启rsyslog服务

 /etc/init.d/rsyslog restart

如果正常的话，/var/log/messages下可以接收服务器、交换机的配置信息。

2、安装LogAnalyzer

[root@bogon home]# ls

loganalyzer-3.6.5  loganalyzer-3.6.5.tar.gz

[root@bogon home]# tar xzvf loganalyzer-3.6.5.tar.gz 

[root@bogon home]# cd loganalyzer-3.6.5

[root@bogon loganalyzer-3.6.5]#mkdir -p /var/www/html/loganalyzer

[root@bogon loganalyzer-3.6.5]# rsync -a src/* /var/www/html/loganalyzer/

# 打开浏览器http://192.168.2.2/loganalyzer，点击here

#点击next

#调整权限，recheck重新配置

# touch /var/www/html/loganalyzer/config.php

# chmod 666 /var/www/html/loganalyzer/config.php

#点击 next

#配置基本信息

#点击next

#点击next

第6步：创建用户名密码用于管理loganalyzer 此处无图

#选择日志源sql表，用于与syslog关联

# 点击next

# 重新登陆会看到日志

界面如下：

3、关于日志轮循相关内容，linux中的日志轮循是使用logrotate

# 查看logrotate相关配置文件

[root@bogon ~]# rpm -ql logrotate

/etc/cron.daily/logrotate

/etc/logrotate.conf

/etc/logrotate.d

/usr/sbin/logrotate

/usr/share/doc/logrotate-3.7.8

/usr/share/doc/logrotate-3.7.8/CHANGES

/usr/share/doc/logrotate-3.7.8/COPYING

/usr/share/man/man5/logrotate.conf.5.gz

/usr/share/man/man8/logrotate.8.gz

/var/lib/logrotate.status

# 编缉logrotate配置文件

vim /etc/logrotate.conf

[root@bogon ~]# cat /etc/logrotate.conf 

# see "man logrotate" for details

# rotate log files weekly

weekly

# keep 4 weeks worth of backlogs

rotate 4

# create new (empty) log files after rotating old ones

create

# use date as a suffix of the rotated file

dateext

# uncomment this if you want your log files compressed

#compress

# RPM packages drop log rotation information into this directory

include /etc/logrotate.d

# no packages own wtmp and btmp -- we‘ll rotate them here

/var/log/wtmp {

    monthly

    create 0664 root utmp

minsize 1M

    rotate 1

}

/var/log/btmp {

    missingok

    monthly

    create 0600 root utmp

    rotate 1

}

# 以周为单位轮循，4次：messages1.....messages4 massages1.....massages4......，往前覆盖

/var/log/messages {

    weekly 

    rotate 4

    dateext

    compress

    missingok

    create 644 root root

    postrotate

    /usr/bin/killall -HUP rsyslogd  #平滑重启rsyslog或者使用/var/run/syslogd.pid更准确

    endscript

}

# system-specific logs may be also be configured here.

# 以时间为结尾，如下：

参考博客：

http://www.cnblogs.com/mchina/p/linux-centos-rsyslog-loganalyzer-mysql-log-server.html

本文出自 “天马行空” 博客，请务必保留此出处http://keep11.blog.51cto.com/1443840/1859469

Rsyslog日志服务器搭建、loganalyzer安装使用