解决Nginx报error while loading shared libraries: libjemalloc.so.2: cannot open

遇见Nginx启动不了，重装也不行

1：执行如下命令查看下nginx启动时调用的库文件

1	`ldd /www/server/nginx/sbin/nginx`

执行后显示如下：

[root@blog.tag.gg~]# ldd /www/server/nginx/sbin/nginx
        linux-vdso.so.1 =>  (0x00007ffd36fa7000)
        libjemalloc.so.2 => not found
        libdl.so.2 => /lib64/libdl.so.2 (0x00007fdacbecc000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fdacbcb0000)
        libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fdacba79000)
        libluajit-5.1.so.2 => not found
        libm.so.6 => /lib64/libm.so.6 (0x00007fdacb777000)
        libz.so.1 => /lib64/libz.so.1 (0x00007fdacb561000)
        libxml2.so.2 => /lib64/libxml2.so.2 (0x00007fdacb1f7000)
        libxslt.so.1 => /lib64/libxslt.so.1 (0x00007fdacafb8000)
        libexslt.so.0 => /lib64/libexslt.so.0 (0x00007fdacada3000)
        libgd.so.2 => /lib64/libgd.so.2 (0x00007fdacab5c000)
        libc.so.6 => /lib64/libc.so.6 (0x00007fdaca78e000)
        /lib64/ld-linux-x86-64.so.2 (0x00007fdacc0d0000)
        libfreebl3.so => /lib64/libfreebl3.so (0x00007fdaca58b000)
        liblzma.so.5 => /lib64/liblzma.so.5 (0x00007fdaca365000)
        libgcrypt.so.11 => /lib64/libgcrypt.so.11 (0x00007fdaca0e4000)
        libgpg-error.so.0 => /lib64/libgpg-error.so.0 (0x00007fdac9edf000)
        libXpm.so.4 => /lib64/libXpm.so.4 (0x00007fdac9ccd000)
        libX11.so.6 => /lib64/libX11.so.6 (0x00007fdac998f000)
        libjpeg.so.62 => /lib64/libjpeg.so.62 (0x00007fdac973a000)
        libfontconfig.so.1 => /lib64/libfontconfig.so.1 (0x00007fdac94f8000)
        libfreetype.so.6 => /lib64/libfreetype.so.6 (0x00007fdac9239000)
        libpng15.so.15 => /lib64/libpng15.so.15 (0x00007fdac900e000)
        libxcb.so.1 => /lib64/libxcb.so.1 (0x00007fdac8de6000)
        libexpat.so.1 => /lib64/libexpat.so.1 (0x00007fdac8bbb000)
        libuuid.so.1 => /lib64/libuuid.so.1 (0x00007fdac89b6000)
        libbz2.so.1 => /lib64/libbz2.so.1 (0x00007fdac87a6000)
        libXau.so.6 => /lib64/libXau.so.6 (0x00007fdac85a2000)

　执行结果看提示“libjemalloc.so.2”和 “libluajit-5.1.so.2”找不到。

2、执行如下命令搜索一下文件是否存在。

1 2	`find / -name libjemalloc.so.2` `find / -name libluajit-5.1.so.2`

执行后显示如下,系统中是存在这个文件的。

[root@blog.tag.gg~]# find / -name libjemalloc.so.2
/usr/local/lib/libjemalloc.so.2
[root@blog.tag.gg~]# find / -name libluajit-5.1.so.2
/usr/local/lib64/libluajit-5.1.so.2
/usr/local/lib/libluajit-5.1.so.2
[root@blog.tag.gg~]#

3、将“libjemalloc.so.2”和 “libluajit-5.1.so.2”文件复制到 /lib64/即可。