# /usr/local/nginx/sbin/nginx

/usr/local/nginx/sbin/nginx: error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directory

從錯誤提示信息可以得知是因為缺少lib文件導致，進一步查看具體內容：

# ldd $(which /usr/local/nginx/sbin/nginx)

libpthread.so.0 => /lib64/libpthread.so.0 (0x00000030e8400000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00000030f9a00000)
libpcre.so.1 => not found
libluajit-5.1.so.2 => not found
libcrypto.so.6 => /lib64/libcrypto.so.6 (0x00000030f2a00000) 
libz.so.1 => /lib64/libz.so.1 (0x00000030e8800000) 
libc.so.6 => /lib64/libc.so.6 (0x00000030e7800000) 
/lib64/ld-linux-x86-64.so.2 (0x00000030e7400000) 
libdl.so.2 => /lib64/libdl.so.2 (0x00000030e8000000)

一：libpcre.so.1 => not found

比如上面的是 /lib64/*,這個和下面解決問題時創建的軟連接有關系

解決辦法：

1、首先確認已經安裝好pcre 軟件（nginx 依賴該軟件）

2、創建軟連接

對於/lib/* 32位系統來說：查看結果顯示 ： libpcre.so.1 => not found ，同時註意lib庫的路徑，有/lib/* 和 /lib64/* 之分。

#查看lib庫
#  ls /lib/ |grep pcre
libpcre.so.0
libpcre.so.0.0.1

#添加軟連接
# ln -s /lib/libpcre.so.0.0.1 /lib/libpcre.so.1

ps: 也有可能 pcre lib文件在目錄：/usr/local/lib/

對於/lib64/* 64位系統來說：

	#查看lib庫
#  ls /lib64/ |grep pcre
libpcre.so.0
libpcre.so.0.0.1

#添加軟連接
# ln -s /lib64/libpcre.so.0.0.1 /lib64/libpcre.so.1

二：libluajit-5.1.so.2 => not found

查找libluajit-5.1.so.2

find / -iname libluajit-5.1.so.2

實際上現實是：

/usr/local/lib/libluajit-5.1.so.2
/usr/local/lib/libluajit-5.1.so.2.0.5

解決辦法

因為安裝在缺省路徑，所以LuaJIT對應的lib，include均在/usr/local目錄裏,但nginx默認查找/usr/lib和/usr/include/lib,做以下操作即可
#ln -s /usr/local/lib/libluajit-5.1.so.2 /usr/lib/libluajit-5.1.so.2
#ln -s /usr/local/lib/libluajit-5.1.so.2.0.2 /usr/lib/libluajit-5.1.so.2.0.2

Nginx啟動錯誤:error while loading shared libraries: libpcre.so.1