### Section 1: Global Environment
#ServerRoot:apache服务器根目录。主配置文件，日志都在该目录。
#注意路径结束时不要加斜杠，默认是/etc/apache2
#ServerRoot "/etc/apache2"

LockFile ${APACHE_LOCK_DIR}/accept.lock

#apache服务启动时在该文件记录进程ID号
# This needs to be set in /etc/apache2/envvars
PidFile ${APACHE_PID_FILE}

#连接超时，单位秒
Timeout 300

#是否允许持久连接
KeepAlive On

#持久连接时最大请求数
MaxKeepAliveRequests 100

KeepAliveTimeout 5


# prefork MPM
<IfModule mpm_prefork_module>
    StartServers          5
    MinSpareServers       5
    MaxSpareServers      10
    MaxClients          150
    MaxRequestsPerChild   0
</IfModule>


# worker MPM
<IfModule mpm_worker_module>
    StartServers        10
    ServerLimit         100
    MinSpareThreads     50
    MaxSpareThreads     200
    ThreadsPerChild     64
    MaxClients          6400
    MaxRequestsPerChild   0
</IfModule>

# event MPM
<IfModule mpm_event_module>
    StartServers          2
    MinSpareThreads      25
    MaxSpareThreads      75
    ThreadLimit          64
    ThreadsPerChild      25
    MaxClients          150
    MaxRequestsPerChild   0
</IfModule>

# These need to be set in /etc/apache2/envvars
User ${APACHE_RUN_USER}
Group ${APACHE_RUN_GROUP}

#apache服务启动后在每个目录中查找后缀是.htaccess的文件，这些文件作为附加的配置
AccessFileName .htaccess
#下面几行防止.htaccess和.htpassword文件被web客户端访问
<Files ~ "^\.ht">
    Order allow,deny
    Deny from all
    Satisfy all
</Files>

#DefaultType是浏览器访问的MIME类型，设置为None，让浏览器自行解析
DefaultType None

# HostnameLookups: Log the names of clients or just their IP addresses
# e.g., www.apache.org (on) or 204.62.129.132 (off).
HostnameLookups Off

#错误日志文件目录，默认是配置在此，可在<VirtualHost>中重载
#日志文件取名时以‘/‘开头会造成冲突，不以‘/‘开头，会默认加上服务器根目录前缀
#比如"foo.log"会被加上ServerRoor目录"/etc/apache2"变成"/etc/apache2/foo.log"
ErrorLog ${APACHE_LOG_DIR}/error.log

#Log日志记录哪些信息，取值可以是: debug, info, notice, warn, error, crit,alert, emerg.
LogLevel warn

#导入模块配置文件
Include mods-enabled/*.load
Include mods-enabled/*.conf
#导入所有用户配置文件
Include httpd.conf
#导入端口监听配置文件
Include ports.conf


# The following directives define some format nicknames for use with
# a CustomLog directive (see below).
# If you are behind a reverse proxy, you might want to change %h into %{X-Forwarded-For}i
#
LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %O" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent


#导入通用配置目录
Include conf.d/

#导入虚拟主机的配置
Include sites-enabled/

root@web-01:/etc/apache2/sites-available# cat default
<VirtualHost *:80>
        ServerAdmin webmaster@localhost

        DocumentRoot /var/www
        <Directory />
                Options FollowSymLinks
                AllowOverride None
        </Directory>
        <Directory /var/www/>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>

        ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
        <Directory "/usr/lib/cgi-bin">
                AllowOverride None
                Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
                Order allow,deny
                Allow from all
        </Directory>

        ErrorLog ${APACHE_LOG_DIR}/error.log

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel warn

        CustomLog ${APACHE_LOG_DIR}/access.log combined

    Alias /doc/ "/usr/share/doc/"
    <Directory "/usr/share/doc/">
        Options Indexes MultiViews FollowSymLinks
        AllowOverride None
        Order deny,allow
        Deny from all
        Allow from 127.0.0.0/255.0.0.0 ::1/128
    </Directory>

</VirtualHost>