系统版本CentOS release 5.7 (Final) 另外一台服务器是6.5在安装mongodb3.3.12版本时没有报任何错误信息。
启动mongodb提示错误如下
/usr/local/mongodb/mongodb3.3.12/bin/mongod: error while loading shared libraries: libssl.so.10: cannot open shared object file: No such file or directory分析原因 系统不知道libssl.so.10放在哪个目录下，全局find了一下libssl.so.10文件没有找到。
在以下地址找到ssl101的安装信息 https://centos.pkgs.org/5/atomic-x86_64/openssl101e-1.0.1e-9.el5.art.i386.rpm.html 执行命令：# yum install openssl101e第二次运行mongoDB提示信息如下
/usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.7' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod) /usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.6' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod) /usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.8' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod) /usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.9' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod) /usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.10' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod)分析原因 出现了/lib64/libc.so.6: version `GLIBC_2.7’ not found问题，glibc版本过低。 先查看一下当前系统glibc的情况：
strings /lib64/libc.so.6 |grep GLIBC GLIBC_2.2.5 GLIBC_2.2.6 GLIBC_2.3 GLIBC_2.3.2 GLIBC_2.3.3 GLIBC_2.3.4 GLIBC_2.4 GLIBC_2.5没有找到支持2.6以上的，需要重新安装glibc 升级版本：glibc-2.7.tar.gz
[root@dev201 ~]# cd /usr/src/ [root@dev201 src]# tar -zxf glibc-2.7.tar.gz [root@dev201 src]# cd glibc-2.7 [root@dev201 glibc-2.7]# mkdir -v ../glibc-build mkdir: created directory `../glibc-build' [root@dev201 glibc-2.7]# cd ../glibc-build/ [root@dev201 glibc-build]# /usr/src/glibc-2.7/configure --prefix=/usr/ [root@dev201 glibc-build]# make [root@dev201 glibc-build]# make install在次查看glibc情况
strings /lib64/libc.so.6 |grep GLIBC GLIBC_2.2.5 GLIBC_2.2.6 GLIBC_2.3 GLIBC_2.3.2 GLIBC_2.3.3 GLIBC_2.3.4 GLIBC_2.4 GLIBC_2.5 GLIBC_2.6 GLIBC_2.7 GLIBC_PRIVATE第三次运行mongoDB提示信息如下
/usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.8' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod) /usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.9' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod) /usr/local/mongodb/mongodb3.3.12/bin/mongod: /lib64/libc.so.6: version `GLIBC_2.10' not found (required by /usr/local/mongodb/mongodb3.3.12/bin/mongod)看来安装的版本还是不够高了， 网站说在5.7上直接将glibc升级到2.10存在风险，系统会崩溃，所以放弃了升级处理。
试着换mongodb低版本试一下，用mongodb3.1.4启动情况如下：
第四次运行mongoDB提示信息如下
/usr/local/mongodb/mongodb3.1.4/bin/mongod: /usr//lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by /usr/local/mongodb/mongodb3.1.4/bin/mongod) /usr/local/mongodb/mongodb3.1.4/bin/mongod: /usr//lib64/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by /usr/local/mongodb/mongodb3.1.4/bin/mongod) /usr/local/mongodb/mongodb3.1.4/bin/mongod: /usr//lib64/libstdc++.so.6: version `CXXABI_1.3.5' not found (required by /usr/local/mongodb/mongodb3.1.4/bin/mongod) /usr/local/mongodb/mongodb3.1.4/bin/mongod: /usr//lib64/libstdc++.so.6: version `CXXABI_1.3.3' not found (required by /usr/local/mongodb/mongodb3.1.4/bin/mongod) /usr/local/mongodb/mongodb3.1.4/bin/mongod: /usr//lib64/libstdc++.so.6: version `GLIBCXX_3.4.9' not found (required by /usr/local/mongodb/mongodb3.1.4/bin/mongod) /usr/local/mongodb/mongodb3.1.4/bin/mongod: /usr//lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /usr/local/mongodb/mongodb3.1.4/bin/mongod)分析原因
gcc编译器版本过低
[root@jstukw4cgk9nve mongodb3.1.4]# strings /usr/lib/libstdc++.so.6 | grep GLIBCXX GLIBCXX_3.4 GLIBCXX_3.4.1 GLIBCXX_3.4.2 GLIBCXX_3.4.3 GLIBCXX_3.4.4 GLIBCXX_3.4.5 GLIBCXX_3.4.6 GLIBCXX_3.4.7 GLIBCXX_3.4.8 GLIBCXX_FORCE_NEW暂时放弃在该台服务器上安装配置mongoDB，编译器版本不够高，主要担心升级以后对系统以前程序和环境有所影响。
解决办法
http://ftp.gnu.org/gnu/glibc/ 下载相关并安装GLIBC_2.8、GLIBC_2.9、GLIBC_2.10.1进行安装配置，目前可以正常启动Mongodb。 安装方法见本页glibc-2.7.tar.gz安装方案即可。
主要原因是系统版本过底，导致C运行库的版本过底导致。
