安装IPA的过程中，修改了/etc/httpd/conf.d/ssl.conf替换所有443为444，导致了httpd启动失败。 查看日志/var/log/httpd/error_log，有以下提示 Starting httpd: httpd: Could not reliably determine the server’s fully qualified domain name 修改hosts文件如下： [root@ipa conf.d]# cat /etc/hosts 127.0.0.1 localhost.localdomain localhost.localdomain localhost4 localhost4.localdomain4 localhost ipa ipa.xionghuilin.com ::1 localhost.localdomain localhost.localdomain localhost6 localhost6.localdomain6 localhost ipa ipa.xonghuilin.com 192.168.26.120 ipa ipa.xionghuilin.com [root@ipa conf.d]# 错误2： Apache 因SSL Library Certificate has expired 无法启动. 参考https://www.cnblogs.com/Fle-x/articles/5789614.html， 重新生成ssl证书： [root@ipa ~]# service httpd […]