日志管理

作者: Ben0606 | 来源:发表于2018-09-22 15:26 被阅读0次

日志介绍

日志

记录历史事件:时间，地点，人物，事件
日志级别：事件的关键性程度，Loglevel

系统日志服务

syslogd

CentOS 5 之前的版本
syslogd: system application记录应用日志
klogd: linux kernel记录日志

rsyslog特性

CentOS 6和CentOS 7

多线程
支持UDP,TCP,SSL,TLS,RELP
支持把日志写入MySQL,PGSQL,Oracle实现日志存储
拥有强大的过滤器，可实现过滤记录日志信息中任意部分
可自定义输出格式

ELK: elasticsearch, logstatsh,kibana

非关系型分布式数据库
基于apache软件基金会jakarta醒目组的项目lucene
Elasticsearch是个开源分布式搜索引擎
Logstash对日志进行收集、分析，并将其存储供以后使用
Kibana可以提供的日志分析友好的Web界面

rsyslog介绍

rsyslog组件

程序包：rsyslog
主程序：/usr/sbin/rsyslogd
CentOS 6：service rsyslog {start|stop|restart|status}
CentOS 7：systemctl {start|stop|restart|status} rsyslog.service
配置文件：/etc/rsyslog.conf，/etc/rsyslog.d/*.conf
库文件： /lib64/rsyslog/*.so

rsyslog配置文件格式：由三部分组成

MODULES：相关模块配置
GLOBAL DIRECTIVES：全局配置
RULES：日志记录相关的规则配置

RULES配置

配置格式：facility.priority; facility.priority… target

facility

*: 所有的facility
facility1,facility2,facility3,....: 指定的facility列表

priority

*：所有级别
none: 没有级别
priority: 此级别及更高级别的日志信息
=priority: 此级别

target

记录与指定的日志文件中，通常应该在/var/log目录下，文件路径前的“-”表示异步写入
用户：将日志通知给指定用户,*表示所有用户
日志服务器：@host，把日志送往至指定的远程服务器记录
管道： | COMMAND，转发给其它命令处理

启用网络日志服务

通常的日志格式

事件产生的日期时间-主机-进程(pid)：事件内容
r日志通常存放在：/var/log/messages, /var/log/cron, /var/log/secure等

Sep 16 09:38:38 mariadb systemd: Started System Logging Service.

配置rsyslog成为日志服务器

加载imudp或imtcp模块
开启TCP或UDP的514端口（也可以同时开启）

#### MODULES ####
# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514
# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514

其他日志

/var/log/secure: 系统安装日志，文本格式，应周期性分析
/var/log/btmp: 当前系统上，用户的失败尝试登录相关日志；二进制格式；使用lastb命令查看
/var/log/wtmp: 当前系统上，用户正常登录系统的相关日志信息; 二进制格式; last命令可以查看
/var/log/lastlog:每一个用户最近一次的登录信息，二进制格式，lastlog命令可以查看；如果重没登录，显示“Never logged in”
/var/log/dmesg：系统引导过程中的日志信息，文本格式;可以使用dmesg命令查看
/var/log/messages ：系统中大部分的信息
/var/log/anaconda : anaconda的日志

日志管理journalctl (CentOS 7)

Systemd 统一管理所有 Unit 的启动日志。带来的好处就是，可以只用journalctl一个命令，查看所有日志（内核日志和应用日志）
日志的配置文件: /etc/systemd/journald.conf

journalctl用法

journalctl :查看所有日志（默认情况下，只保存本次启动的日志）
journalctl -k:查看内核日志（不显示应用日志）
journalctl -b :查看系统本次启动的日志
journalctl -b -0 :查看系统本次启动的日志
journalctl -b -1 :查看上一次启动的日志（需更改设置）
journalctl -n :显示尾部的最新10行日志
journalctl -n 20 :显示尾部指定行数的日志
journalctl -f:实时滚动显示最新日志
journalctl --since : 查看指定时间的日志

journalctl --since="2017-10-30 18:10:30"
journalctl --since "20 min ago"
journalctl --since yesterday
journalctl --since "2017-01-10" --until "2017-01-11 03:00"
journalctl --since 09:00 --until "1 hour ago"

journalctl /PATH/TO/SERVER：查看指定服务的日志

journalctl /usr/lib/systemd/systemd

journalctl _PID=# 查看指定进程的日志

journalctl _PID=1

journalctl /PATH/TO/SH ：查看某个路径的脚本的日志

journalctl /usr/bin/bash

journalctl _UID=#：查看指定用户的日志

journalctl _UID=33 --since today

journalctl -u APP.UNIT :查看某个 Unit 的日志

journalctl -u nginx.service
journalctl -u nginx.service --since today

journalctl -u APP.UNIT -f :实时滚动显示某个 Unit 的最新日志

journalctl -u nginx.service -f

journalctl -u APP1.UNIT -u APP2.UNIT :合并显示多个 Unit 的日志

journalctl -u nginx.service -u php-fpm.service --since today

journalctl --no-pager: 日志默认分页输出，--no-pager 改为正常的标准输出
UNIT日志以JSON格式输出
journalctl -b -u UNIT -o json ：单行
journalctl -b -u UNIT -o json-pretty ：多行
journalctl --disk-usage：显示日志占据的硬盘空间
journalctl --vacuum-size=#{M|G}：指定日志文件占据的最大空间
journalctl --vacuum-time=1years ：指定日志文件保存多久

查看指定优先级（及其以上级别）的日志

语法： journalctl -p PRIORTY -b
0: emerg
1: alert
2: crit
3: err
4: warning
5: notice
6: info
7: debug

[root@mariadb ~]#journalctl -p err -b
-- Logs begin at Sat 2018-09-01 05:27:12 CST, end at Sun 2018-09-16 10:21:03 CST. --
Sep 01 05:27:13 centos7 kernel: sd 0:0:0:0: [sda] Assuming drive cache: write through
Aug 31 21:27:17 centos7 kernel: piix4_smbus 0000:00:07.3: SMBus Host Controller not enabled!
Sep 11 10:15:34 mariadb.guangxi.com sshd[23117]: error: Received disconnect from 192.168.32.9 port 65
lines 1-4/4 (END)

实验：配置日志服务器

配置日志服务器，收集将其他主机的日志

hostname	ip
logsrv	192.168.32.71
logclient	192.168.32.72

1. logsrv设置日志服务器

修改/etc/rsyslog.conf
开启tcp或udp监听，或两个都开启；同时加载模块

sed -i 's@# $ModLoad imudp@$ ModLoad imudp@' /etc/rsyslog.conf
sed -i 's@# $ModLoad imtcp@$ ModLoad imtcp@' /etc/rsyslog.conf
sed -i 's@# $UDPServerRun 514@$ UDPServerRun 514@' /etc/rsyslog.conf
sed -i 's@# $InputTCPServerRun 514@$ InputTCPServerRun 514@' /etc/rsyslog.conf

[root@logsrv ~]#sed -i 's@#$ModLoad imudp@$ModLoad imudp@' /etc/rsyslog.conf
[root@logsrv ~]#sed -i 's@#$ModLoad imtcp@$ModLoad imtcp@' /etc/rsyslog.conf
[root@logsrv ~]#sed -i 's@#$UDPServerRun 514@$UDPServerRun 514@' /etc/rsyslog.conf
[root@logsrv ~]#sed -i 's@#$InputTCPServerRun 514@$InputTCPServerRun 514@' /etg.conf


[root@logsrv ~]#sed -n '14,21p' /etc/rsyslog.conf
# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514

# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514

重启rsyslog服务，查看监听

systemctl restart rsyslog
ss -ntlu |grep 514

[root@logsrv ~]#systemctl restart rsyslog
[root@logsrv ~]#ss -ntlu |grep 514
udp    UNCONN     0      0         *:514                   *:*                  
udp    UNCONN     0      0        :::514                  :::*                  
tcp    LISTEN     0      25        *:514                   *:*                  
tcp    LISTEN     0      25       :::514                  :::*                  
[root@logsrv ~]#

2. logclinet设置

修改rsyslog.conf,让日志指向logsrv
只需要把相关日志的target修改即可

*.info;mail.none;authpriv.none;cron.none                @192.168.32.71

重启rsyslog服务

[root@logclient ~]#systemctl restart rsyslog

安装一个包做测试，然后查看日志信息
logclient没有日志信息

[root@logclient ~]#yum -y -q install lrzsz
[root@logclient ~]#tail /var/log/messages
Sep 16 10:49:18 7node02 systemd-logind: New session 20 of user root.
Sep 16 10:49:18 7node02 systemd: Starting Session 20 of user root.
Sep 16 10:49:59 7node02 systemd-logind: Removed session 20.
Sep 16 10:50:00 7node02 systemd: Started Session 21 of user root.
Sep 16 10:50:00 7node02 systemd-logind: New session 21 of user root.
Sep 16 10:50:00 7node02 systemd: Starting Session 21 of user root.
Sep 16 10:51:19 7node02 chronyd[666]: Selected source 120.25.115.19
Sep 16 10:51:19 7node02 chronyd[666]: System clock wrong by 2.820143 seconds, adjustment started
Sep 16 11:01:01 7node02 systemd: Started Session 22 of user root.
Sep 16 11:01:01 7node02 systemd: Starting Session 22 of user root.

3. 在服务器端查看日志情况

服务器端收到日志信息

[root@logsrv ~]#tail /var/log/messages
Sep 16 11:06:03 logsrv systemd: Started Session 14 of user root.
Sep 16 11:06:03 logsrv systemd-logind: New session 14 of user root.
Sep 16 11:06:03 logsrv systemd: Starting Session 14 of user root.
Sep 16 11:06:03 logsrv systemd-logind: Removed session 14.
Sep 16 11:07:29 logclient systemd: Stopping System Logging Service...
Sep 16 11:07:29 logclient rsyslogd: [origin software="rsyslogd" swVersion="8.24.0" x-pid="992" x-info="http://www.rsyslog.com"] exiting on signal 15.
Sep 16 11:07:29 logclient systemd: Starting System Logging Service...
Sep 16 11:07:29 logclient rsyslogd: [origin software="rsyslogd" swVersion="8.24.0" x-pid="24944" x-info="http://www.rsyslog.com"] start
Sep 16 11:07:29 logclient systemd: Started System Logging Service.
Sep 16 11:08:06 logclient yum[24948]: Installed: lrzsz-0.12.20-36.el7.x86_64

实验：rsyslog日志记录存放于MySQL中

把日志数据存放在MySQL中
依赖包rsyslog-mysql

配置web日志管理工具loganalyzer
需要http服务

hostname	ip
logsrv	192.168.32.71
logclient	192.168.32.72
mariadb	192.168.32.73

1. logsrv日志服务器配置

1.1 若要收集其他主机的日志，则开启监听端口

[root@logsrv ~]#sed -n '14,21p' /etc/rsyslog.conf
# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514

# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514

1.2 安装rsyslog-mysql和mysql客户端

[root@logsrv ~]#yum -y install rsyslog-mysql mysql
[root@logsrv ~]#rpm -ql rsyslog-mysql
/usr/lib64/rsyslog/ommysql.so
/usr/share/doc/rsyslog-8.24.0/mysql-createDB.sql

1.3 查看rsyslog-mysql自带的sql

数据库名Syslog
表：SystemEvents，SystemEventsProperties

[root@logsrv ~]#tail -n 40  /usr/share/doc/rsyslog-8.24.0/mysql-createDB.sql
CREATE DATABASE Syslog;
USE Syslog;
CREATE TABLE SystemEvents
(
        ID int unsigned not null auto_increment primary key,
        CustomerID bigint,
        ReceivedAt datetime NULL,
        DeviceReportedTime datetime NULL,
        Facility smallint NULL,
        Priority smallint NULL,
        FromHost varchar(60) NULL,
        Message text,
        NTSeverity int NULL,
        Importance int NULL,
        EventSource varchar(60),
        EventUser varchar(60) NULL,
        EventCategory int NULL,
        EventID int NULL,
        EventBinaryData text NULL,
        MaxAvailable int NULL,
        CurrUsage int NULL,
        MinUsage int NULL,
        MaxUsage int NULL,
        InfoUnitID int NULL ,
        SysLogTag varchar(60),
        EventLogType varchar(60),
        GenericFileName VarChar(60),
        SystemID int NULL
);

CREATE TABLE SystemEventsProperties
(
        ID int unsigned not null auto_increment primary key,
        SystemEventID int NULL ,
        ParamName varchar(255) NULL ,
        ParamValue text NULL
);
[root@logsrv ~]#

2. 准备数据库服务器

2.1 安装mariadb

centos6: mysql-server
centos7: mariadb-server

[root@mariadb ~]#yum -y install mariadb-server
[root@mariadb ~]#systemctl start mariadb
[root@mariadb ~]#ss -ntl |grep :3306
LISTEN     0      50           *:3306                     *:*

2.2 修改配置文件

vi /etc/my.cnf
innodb_file_per_table=yes
skip_name_resolve=yes

[root@mariadb ~]#vi /etc/my.cnf

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
innodb_file_per_table=yes
skip_name_resolve=yes

[root@mariadb ~]#systemctl restart mariadb

2.3 修改数据库root密码

默认空秘密
账号：root,密码：123456

[root@mariadb ~]#mysqladmin -uroot -p  -h127.0.0.1 password 123456
Enter password: 
[root@mariadb ~]#mysql -uroot -p123456
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 4
Server version: 5.5.56-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]>

2.4 提前给日志数据库Syslog赋权，并设置相关用户

GRANT ALL ON Syslog.* TO 'syslog'@'192.168.32.%' IDENTIFIED BY '123456';

MariaDB [(none)]> GRANT ALL ON Syslog.* TO 'syslog'@'192.168.32.%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]>

测试syslog用户登录数据库

[root@mariadb ~]#mysql -usyslog -p123456 -h192.168.32.73
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 3
Server version: 5.5.56-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]>

3. 日志服务器连接数据库

3.1 导入sql

[root@logsrv ~]#rpm -ql rsyslog-mysql
/usr/lib64/rsyslog/ommysql.so
/usr/share/doc/rsyslog-8.24.0/mysql-createDB.sql

[root@logsrv ~]#mysql -usyslog -h192.168.32.73 -p < /usr/share/doc/rsyslog-8.24.0/mysql-createDB.sql
Enter password: 
[root@logsrv ~]#

3.2 确认创建相应数据库和表

SHOW DATABASES;
SHOW TABLES;
SELECT COUNT(*) FROM SystemEvents;

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| Syslog             |
| test               |
+--------------------+
3 rows in set (0.00 sec)

MariaDB [(none)]> 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
MariaDB [Syslog]> SHOW TABLES;
+------------------------+
| Tables_in_Syslog       |
+------------------------+
| SystemEvents           |
| SystemEventsProperties |
+------------------------+
2 rows in set (0.00 sec)

MariaDB [Syslog]> SELECT COUNT(*) FROM SystemEvents;
+----------+
| COUNT(*) |
+----------+
|        0 |
+----------+
1 row in set (0.00 sec)

MariaDB [Syslog]>

3.3 修改/etc/rsyslog.conf

rsyslog-mysql使用到的库文件ommysql

[root@logsrv ~]#rpm -ql rsyslog-mysql
/usr/lib64/rsyslog/ommysql.so

根据需求将需要存放在数据库的日志指向mysql服务器
$ModLoad ommysql
facility.priority :ommysql:DBHOST,DBNAME,DBUSER, PASSWORD

#### MODULES ####
$ModLoad ommysql
#### RULES ####
*.info;mail.none;authpriv.none;cron.none                :ommysql:192.168.32.73,Syslog,syslog,123456

3.4 重启服务后测试配置情况

数据库的数据增加了
systemctl restart rsyslog
mysql -usyslog -p123456 -h192.168.32.73
SELECT COUNT(*) FROM SystemEvents;

[root@logsrv ~]#systemctl restart rsyslog
[root@logsrv ~]#yum -y install samba
[root@logsrv ~]#mysql -usyslog -p123456 -h192.168.32.73
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 4
Server version: 5.5.56-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]> 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
MariaDB [Syslog]> SELECT COUNT(*) FROM SystemEvents;
+----------+
| COUNT(*) |
+----------+
|       21 |
+----------+
1 row in set (0.00 sec)

MariaDB [Syslog]>

4. 配置loganalyzer使用web展示日志

4.1 日志服务器配置httpd服务

loganalyzer是基于php开发的
php-mysql用于连接数据库
php-gd用于显示web页面的统计图，否则无法显示统计柱状图

[root@logsrv ~]#yum -y install httpd php php-mysql php-gd
[root@logsrv ~]#systemctl start httpd
[root@logsrv ~]#ss -ntl |grep :80
LISTEN     0      128         :::80                      :::*

4.2 安装LogAnalyzer

解包

[root@logsrv data]#tar xf loganalyzer-4.1.6.tar.gz

把loganalyzer站点拷贝到http的中心主机路径下
创建配置文件，并赋权
重启httpd服务

[root@logsrv data]#cp -ar loganalyzer-4.1.6/src /var/www/html/loganalyzer
[root@logsrv data]#cd /var/www/html/loganalyzer/
[root@logsrv loganalyzer]#touch config.php
[root@logsrv loganalyzer]#chmod 666 config.php
[root@logsrv loganalyzer]#systemctl restart httpd

配置loganalyzer(直接在web浏览器配置)
字符界面只是便于保存过程

第一步，选Next

[root@logsrv loganalyzer]#links 192.168.32.71/loganalyzer
LogAnalyzer :: Installer Step 1 
   Show Events                                                                        
                                                                                      
                    Installing LogAnalyzer Version 4.1.6 - Step 1                     
                                                                                      
                                Step 1 - Prerequisites                                
                                                                                      
     Before you start installing LogAnalyzer, the Installer setup has to check a      
     few things first.                                                                
     You may have to correct some file permissions first.                             
                                                                                      
     Click on [ Next ] to start the Test!                                             
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                Install Progress: Installer Step 1            [ Next ]                
                                                                                      
     Made by Adiscon GmbH      Adiscon LogAnalyzer    Partners:      Rsyslog |        
         (2008-2016)             Version 4.1.6                       WinSyslog

第二步，选next

LogAnalyzer :: Installer Step 2 
   Show Events                                                                        
                                                                                      
                    Installing LogAnalyzer Version 4.1.6 - Step 2                     
                                                                                      
                           Step 2 - Verify File Permissions                           
                                                                                      
     The following file permissions have been checked. Verify the results below!      
     You may use the configure.sh script from the contrib folder to set the           
     permissions for you.                                                             
                                                                                      
                                                                                      
                                                                                      
                     file './config.php'             Writeable                        
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                Install Progress: Installer Step 2            [ Next ]                
                                                                                      
     Made by Adiscon GmbH      Adiscon LogAnalyzer    Partners:      Rsyslog |        
         (2008-2016)             Version 4.1.6                       WinSyslog

第三步，修改想要的参数，然后next

                             Step 3 - Basic Configuration                             
                                                                                      
     In this step, you configure the basic configurations for LogAnalyzer.            
                                                                                      
                                                                                      
                                                                                      
                                  Frontend Options                                    
       Number of syslog messages per 50_______________________________________        
       page                                                                           
       Message character limit for   80_______________________________________        
       the main view                                                                  
       Character display limit for   30_______________________________________        
       all string type fields                                                         
       Show message details popup                               [X] Yes [ ] No        
       Automatically resolved IP                                [X] Yes [ ] No        
       Addresses (inline)                                                             
                                                                                      
                                User Database Options                                 
       Enable User Database                                     [ ] Yes [X] No        
                                                                                      
       A MYSQL database Server is required for this feature. Other database           
       engines are not supported for the User Database System. However for            
       logsources, there is support for other database systems.                       
       Database Host                 localhost________________________________        
       Database Port                 3306_____________________________________        
       Database Name                 loganalyzer______________________________        
       Table prefix                  logcon___________________________________        
       Database User                 user_____________________________________  
       Database Password             _________________________________________        
       Require user to be                                       [ ] Yes [X] No        
       logged in                                                                      
       Authentication method                         [Internal authentication]        
                                                                                      
                             LDAP Authentication Options                              
       LDAP Server Hostname/IP       localhost________________________________        
       LDAP Port, default 389 (636   389______________________________________        
       for SSL)                                                                       
       Base DN for LDAP Search       CN=Users,DC=domain,DC=local______________        
       Basic Search filter           (objectClass=user)_______________________        
       LDAP Username attribute       sAMAccountName___________________________        
       Privilegied user used to LDAP N=Searchuser,CN=Users,DC=domain,DC=local_        
       queries                                                                        
       Password of the privilegied   ********_________________________________        
       user                                                                           
       Default administrative LDAP   Administrator____________________________        
       Username                                                                       
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                                                                                      
                Install Progress: Installer Step 3            [ Next ]                
                                                                                      
     Made by Adiscon GmbH      Adiscon LogAnalyzer    Partners:      Rsyslog |        
         (2008-2016)             Version 4.1.6                       WinSyslog

第四步，配置数据源，填入数据库的信息和用户密码。下一个页面点击finish就完成了配置

配置完成后使用web登录即可links 192.168.32.71/loganalyzer

Step 7 - Create the first source for syslog messages                 
                                                                                      
                                                                                      
                                                                                      
                                 First Syslog Source                                  
     Name of the Source                 My Syslog Source_________________________     
     Source Type                                                 [MYSQL Native__]     
     Select View                                               [Syslog Fields___]     
                                                                                      
                                  Disk Type Options                                   
     Logline type                                   [Syslog / RSyslog___________]     
     Syslog file    /var/log/syslog______________________________________________     
                                                                                      
                                Database Type Options                                 
                                                                                      
     Database Storage Engine                        [Mysql Server_______________]     
                                                                                      
     Table type                                                     [MonitorWare]     
     Database Host                      192.168.32.73____________________________     
     Database Name                      Syslog___________________________________     
     Database Tablename                 SystemEvents_____________________________     
     Database User                      syslog___________________________________     
     Database Password                  ******___________________________________     
     Enable Row Counting                                           [X] Yes [ ] No

analyzer.png

analyzer2.png

日志管理

日志介绍

日志

系统日志服务

syslogd

rsyslog特性

ELK: elasticsearch, logstatsh,kibana

rsyslog介绍

相关术语

facility

priority

rsyslog组件

rsyslog配置文件格式：由三部分组成

RULES配置

facility

priority

target

启用网络日志服务

通常的日志格式

配置rsyslog成为日志服务器

其他日志

日志管理journalctl (CentOS 7)

journalctl用法

查看指定优先级（及其以上级别）的日志

实验：配置日志服务器

1. logsrv设置日志服务器

2. logclinet设置

3. 在服务器端查看日志情况

实验：rsyslog日志记录存放于MySQL中

1. logsrv日志服务器配置

1.1 若要收集其他主机的日志，则开启监听端口

1.2 安装rsyslog-mysql和mysql客户端

1.3 查看rsyslog-mysql自带的sql

2. 准备数据库服务器

2.1 安装mariadb

2.2 修改配置文件

2.3 修改数据库root密码

2.4 提前给日志数据库Syslog赋权，并设置相关用户

3. 日志服务器连接数据库

3.1 导入sql

3.2 确认创建相应数据库和表

3.3 修改/etc/rsyslog.conf

3.4 重启服务后测试配置情况

4. 配置loganalyzer使用web展示日志

4.1 日志服务器配置httpd服务

4.2 安装LogAnalyzer

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