Centos6.5 glibc upgrade process introduction

Scenario Requirements

The default Centos6.5 glibc version is up to 2.12. When developing Nodejs, the packages that the project depends on often require a higher version of the glibc library support. Therefore, without upgrading the system, you need to actively update the system glibc library. Generally, when you encounter the error libc.so.6: version GLIBC_2.14 not found , it means that glibc needs to be upgraded.

glibc version

To view the system glibc library version, you can use the following command:

$ strings /lib64/libc.so.6 |grep GLIBC_

glibc installation

First, download glibc and get glibc-2.14.tar.gz Use the following command to decompress glibc-2.14.tar.gz :

$ tar -xzvf glibc-2.14.tar.gz

Get the directory glibc-2.14 in the current directory, execute the $cd glibc-2.14 command to enter the directory, and execute the following commands in sequence to compile and install glibc-2.14:

$ mkdir build // Create a build folder in the glibc-2.14 directory$ cd build // Enter the build directory$ ../configure --prefix=/opt/glibc-2.14 // Configure glibc and set the current glibc-2.14 installation directory$ make && make install // Compile and install the glibc-2.14 library

glibc softlink

After the installation is complete, create a soft link pointing to glibc-2.14 and execute the following command:

$ rm -rf /lib64/libc.so.6 // Delete the previous libc.so.6 soft link first $ ln -s /opt/glibc-2.14/lib/libc-2.14.so /lib64/libc.so.6

Notice

Deleting libc.so.6 may cause system commands to become unavailable. You can use the following method to solve this problem:

$ LD_PRELOAD=/opt/glibc-2.14/lib/libc-2.14.so ln -s /opt/glibc-2.14/lib/libc-2.14.so /lib64/libc.so.6

If the above update fails, you can use the following command to restore:

$ LD_PRELOAD=/lib64/libc-2.12.so ln -s /lib64/libc-2.12.so /lib64/libc.so.6 // libc-2.12.so This item is the version before the system upgrade

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