找到一台老古董机器
[root@resource conf]# cat /etc/redhat-release CentOS release 5.6 (Final)[root@resource conf]# openssl versionOpenSSL 0.9.8e-fips-rhel5 01 Jul 2008[root@resource conf]# ldd --versionldd (GNU libc) 2.5Copyright (C) 2006 Free Software Foundation, Inc.This is free software; see the source for copying conditions. ?There is NOwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.Written by Roland McGrath and Ulrich Drepper.[root@resource conf]# gcc --versiongcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)Copyright (C) 2006 Free Software Foundation, Inc.本程序是自由软件；请参看源代码的版权声明。本软件没有任何担保；包括没有适销性和某一专用目的下的适用性担保。
开始的想法很简单，直接把别的机器上mod_ssl.so下载到这个机器上，直接就报错了
[root@resource ~]# service httpd configtesthttpd: Syntax error on line 201 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_ssl.so into server: /lib64/libc.so.6: version `GLIBC_2.7‘ not found (required by /usr/lib64/libcrypto.so.10)
然后把libc.so.6和libcrypto.so.10 放进去 依然报错
[root@resource ~]# ldconfig /lib64/libc-2.5.so ldconfig: /lib64/libc.so.6 is not a symbolic linkldconfig: /usr/lib64/libcrypto.so.10 is not a symbolic link[root@resource ~]# lsls: error while loading shared libraries: /lib64/libc.so.6: ELF file OS ABI invalid[root@resource ~]# ln -s /lib64/libc-2.5.so /lib64/libDisplay all 129 possibilities? (y or n)[root@resource ~]# ln -s /lib64/libc-2.5.so /lib64/libc.so.6ln: error while loading shared libraries: /lib64/libc.so.6: ELF file OS ABI invalid[root@resource ~]# ldconfig -l /lib64/libc-2.5.so ldconfig: /lib64/libc.so.6 is not a symbolic link[root@resource ~]# cp /lib64/libc-2.5.so /lib64/libc.so.6cp: error while loading shared libraries: /lib64/libc.so.6: ELF file OS ABI invalid
这个破玩意简直崩溃，幸亏远程连接没断开，几乎所有命令都不能用了。幸好用这个屌丝的办法解决了
https://blog.csdn.net/czw698/article/details/48264871 一身冷汗好吗，生产环境搞成这样~~！
然后换思路，重新编译apache，把prefix目录改成其他的。
历史版本下载 http://archive.apache.org/dist/
./configure --prefix=/usr/local/service/httpd --enable-so --enable-ssl --enable-cgi --enable-rewrite --enable-modules=most --enable-mpms-shared=all --with-zlib --with-pcre --with-apr=/usr/local/service/apr --with-apr-util=/usr/local/service/apr-util --sysconfigdir=/usr/local/service/httpd/conf/[root@resource modules]# cd /usr/local/service/apache2.2/modules/[root@resource modules]# lshttpd.exp
what？mod_ssl.so去哪了？各种so去哪了，我明明写的enable-modules。各种修改编译命令。仍然没有。百度一下吧，百度各位大神让用apxs命令编译
[root@resource conf]# /usr/local/service/apache2.2/bin/apxs -a -i -c -L /usr/lib/openssl/engines/lib -c *.c -lcrypto -lssl -ldl[root@resource modules]# cd /usr/local/service/apache2.2/modules/[root@resource modules]# lshttpd.exp ?mod_ssl.so
激动人心的时刻到了，把mod_ssl.so复制到原来apache模块目录/etc/httpd/modules
[root@resource modules]# service httpd configtestSyntax OK
完美
apache缺少模块解决方法
原文地址：https://www.cnblogs.com/guoyabin/p/9469596.html