Httpd服务入门知识-Httpd服务常见配置案例之显示服务器版本信息

　　　　　　　　Httpd服务入门知识-Httpd服务常见配置案例之显示服务器版本信息

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　作者：尹正杰

一.httpd配置文件的组成

1>.主要组成

　　Global Environment
　　
　　Main server configuration

　　virtual host

2>.配置格式：directive value(指令属性值)

　　directive 不区分字符大小写

　　value 为路径时，是否区分大小写，取决于文件系统

3>.官方帮助

博主推荐阅读:
　　http://httpd.apache.org/docs/2.4/

二.显示服务器版本信息

1>.如下图所示，默认情况下服务器版本是显示的

2>.点击指令快速参考(如下图所示，点击"Run-time Configuration Directives")

3>.快速过滤我们要查找的指令(如下图所示，咱们要设置的是显示服务器版本信息，该指令是以"S"开头的)

4>.如下图所示，点击"ServerTokens"指令

5>.查看显示服务器版本信息案例

6>.自定义httpd的配置文件，设置参数"ServerTokens Prod"

[root@node101.yinzhengjie.org.cn ~]# egrep -v "^ *#|^$" /etc/httpd/conf/httpd.conf  
ServerRoot "/etc/httpd"
Listen 80
Include conf.modules.d/*.conf
User apache
Group apache
ServerAdmin root@localhost
<Directory />
    AllowOverride none
    Require all denied
</Directory>
DocumentRoot "/var/www/html"
<Directory "/var/www">
    AllowOverride None
    Require all granted
</Directory>
<Directory "/var/www/html">
    Options Indexes FollowSymLinks
    AllowOverride None
    Require all granted
</Directory>
<IfModule dir_module>
    DirectoryIndex index.html
</IfModule>
<Files ".ht*">
    Require all denied
</Files>
ErrorLog "logs/error_log"
LogLevel warn
<IfModule log_config_module>
    LogFormat "%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User-Agent}i"" combined
    LogFormat "%h %l %u %t "%r" %>s %b" common
    <IfModule logio_module>
      LogFormat "%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User-Agent}i" %I %O" combinedio
    </IfModule>
    CustomLog "logs/access_log" combined
</IfModule>
<IfModule alias_module>
    ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
</IfModule>
<Directory "/var/www/cgi-bin">
    AllowOverride None
    Options None
    Require all granted
</Directory>
<IfModule mime_module>
    TypesConfig /etc/mime.types
    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz
    AddType text/html .shtml
    AddOutputFilter INCLUDES .shtml
</IfModule>
AddDefaultCharset UTF-8
<IfModule mime_magic_module>
    MIMEMagicFile conf/magic
</IfModule>
EnableSendfile on
IncludeOptional conf.d/*.conf
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]#

[root@node101.yinzhengjie.org.cn ~]# egrep -v "^ *#|^$" /etc/httpd/conf/httpd.conf　　　　　　　　#默认配置

[root@node101.yinzhengjie.org.cn ~]# curl -I http://node101.yinzhengjie.org.cn/
HTTP/1.1 200 OK
Date: Sat, 07 Dec 2019 01:59:20 GMT
Server: Apache/2.4.6 (CentOS)
Last-Modified: Sat, 07 Dec 2019 01:31:15 GMT
ETag: "25-599131e54e9d8"
Accept-Ranges: bytes
Content-Length: 37
Content-Type: text/html; charset=UTF-8

[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# echo "ServerTokens Prod" > /etc/httpd/conf.d/server_tokens.conf
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# cat /etc/httpd/conf.d/server_tokens.conf
ServerTokens Prod
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# httpd -t
Syntax OK
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# systemctl reload httpd
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# curl -I http://node101.yinzhengjie.org.cn/
HTTP/1.1 200 OK
Date: Sat, 07 Dec 2019 02:00:26 GMT
Server: Apache
Last-Modified: Sat, 07 Dec 2019 01:31:15 GMT
ETag: "25-599131e54e9d8"
Accept-Ranges: bytes
Content-Length: 37
Content-Type: text/html; charset=UTF-8

[root@node101.yinzhengjie.org.cn ~]#

7>.查看httpd进程

[root@node101.yinzhengjie.org.cn ~]# ps auxf | grep apache
root      5085  0.0  0.0 112708   980 pts/0    S+   10:08   0:00  |       \_ grep --color=auto apache
apache    5057  0.0  0.0 224184  3700 ?        S    10:00   0:00  \_ /usr/sbin/httpd -DFOREGROUND
apache    5058  0.0  0.0 224184  3672 ?        S    10:00   0:00  \_ /usr/sbin/httpd -DFOREGROUND
apache    5059  0.0  0.0 224052  3184 ?        S    10:00   0:00  \_ /usr/sbin/httpd -DFOREGROUND
apache    5060  0.0  0.0 224052  2948 ?        S    10:00   0:00  \_ /usr/sbin/httpd -DFOREGROUND
apache    5061  0.0  0.0 224052  2952 ?        S    10:00   0:00  \_ /usr/sbin/httpd -DFOREGROUND
apache    5065  0.0  0.0 224052  2952 ?        S    10:00   0:00  \_ /usr/sbin/httpd -DFOREGROUND
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# pstree | grep httpd
        |-httpd---6*[httpd]
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# pstree -p | grep httpd
           |-httpd(5026)-+-httpd(5057)
           |             |-httpd(5058)
           |             |-httpd(5059)
           |             |-httpd(5060)
           |             |-httpd(5061)
           |             `-httpd(5065)
[root@node101.yinzhengjie.org.cn ~]# 
[root@node101.yinzhengjie.org.cn ~]# pstree -p 
systemd(1)─┬─NetworkManager(3051)─┬─dhclient(3119)
           │                      ├─{NetworkManager}(3081)
           │                      └─{NetworkManager}(3084)
           ├─agetty(3421)
           ├─atd(3055)
           ├─auditd(3015)───{auditd}(3016)
           ├─crond(3068)
           ├─dbus-daemon(3042)
           ├─httpd(5026)─┬─httpd(5057)
           │             ├─httpd(5058)
           │             ├─httpd(5059)
           │             ├─httpd(5060)
           │             ├─httpd(5061)
           │             └─httpd(5065)
           ├─irqbalance(3040)
           ├─lvmetad(1656)
           ├─polkitd(3037)─┬─{polkitd}(3050)
           │               ├─{polkitd}(3052)
           │               ├─{polkitd}(3053)
           │               ├─{polkitd}(3072)
           │               ├─{polkitd}(3077)
           │               └─{polkitd}(3079)
           ├─rsyslogd(3400)─┬─{rsyslogd}(3411)
           │                └─{rsyslogd}(3415)
           ├─sshd(3396)─┬─sshd(3954)───bash(3956)───pstree(5101)
           │            └─sshd(4851)───bash(4853)
           ├─systemd-journal(1636)
           ├─systemd-logind(3041)
           ├─systemd-udevd(1660)
           └─tuned(3395)─┬─{tuned}(3676)
                         ├─{tuned}(3677)
                         ├─{tuned}(3678)
                         └─{tuned}(3691)
[root@node101.yinzhengjie.org.cn ~]#