Web服务器无法访问

在centos-7上，我安装了web服务器，但是我无法通过web浏览器查看testing页面。

# yum list httpd* Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: centos.mirror.iphh.net * epel: mirror.imt-systems.com * extras: mirror.wiuwiu.de * updates: mirror.daniel-jost.net Installed Packages httpd.x86_64 2.4.6-45.el7.centos.4 @updates httpd-manual.noarch 2.4.6-45.el7.centos.4 @updates httpd-tools.x86_64 2.4.6-45.el7.centos.4 @updates Available Packages httpd-devel.x86_64 2.4.6-45.el7.centos.4 updates httpd-itk.x86_64 2.4.7.04-1.el7 epel # ls /etc/init.d/ functions iprdump iprinit iprupdate netconsole network README # ps aux | grep httpd root 28879 0.0 0.8 240340 8340 ? Ss 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28880 0.0 0.3 242352 3432 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28881 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28882 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28883 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28884 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28885 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND root 29076 0.0 0.0 112640 972 pts/0 S+ 01:09 0:00 grep --color=auto httpd # ps aux | grep apache apache 28880 0.0 0.3 242352 3432 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28881 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28882 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28883 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28884 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND apache 28885 0.0 0.3 242424 3700 ? S 01:03 0:00 /usr/sbin/httpd -DFOREGROUND root 29078 0.0 0.0 112640 980 pts/0 S+ 01:09 0:00 grep --color=auto apache

看看日志，我明白了

  # cat /var/log/httpd/access_log # cat /var/log/httpd/error_log [Tue May 16 01:03:35.055960 2017] [core:notice] [pid 28879] SELinux policy enabled; httpd running as context system_u:system_r:httpd_t:s0 [Tue May 16 01:03:35.057776 2017] [suexec:notice] [pid 28879] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec) AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message [Tue May 16 01:03:35.073921 2017] [auth_digest:notice] [pid 28879] AH01757: generating secret for digest authentication ... [Tue May 16 01:03:35.074540 2017] [lbmethod_heartbeat:notice] [pid 28879] AH02282: No slotmem from mod_heartmonitor [Tue May 16 01:03:35.101221 2017] [mpm_prefork:notice] [pid 28879] AH00163: Apache/2.4.6 (CentOS) OpenSSL/1.0.1e-fips mod_fcgid/2.3.9 configured -- resuming normal operations [Tue May 16 01:03:35.101259 2017] [core:notice] [pid 28879] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'

任何想法debugging更多？

检查防火墙（firewalld）可以允许在活动区域中使用的端口号

sudo firewall-cmd --get-active-zones sudo firewall-cmd --zone=your_zone --add-port=80/tcp --permanent sudo firewall-cmd --reload

一个很好的例子如下： https : //stackoverflow.com/questions/24729024/centos-7-open-firewall-port

而对于更多的firewalldconfiguration： https : //fedoraproject.org/wiki/Firewalld?rd= FirewallD# Predefined_services

确认selinux允许你要使用的端口号（通常为80 / tcp）

检查： senamage port -l

修改： senamage port -a -t http_port_t -p tcp 80