This refers to a specific version of the GNU C Library (glibc) and its compatibility with a particular operating system environment. The identifier “2.27” denotes a release of the glibc, a fundamental component providing standard C functions necessary for programs to run on Linux systems. This version is significant because software compiled against it relies on the functionalities and APIs it offers. Amazon Linux 2 is the operating system in question, indicating that this glibc version is either the standard or a supported library within that distribution.
The combination is essential for ensuring application compatibility and stability within the Amazon Linux 2 ecosystem. Applications built and tested against glibc 2.27 are expected to function correctly on systems with this library. Using a compatible glibc ensures that programs can access system resources and execute standard C functions without encountering errors or unexpected behavior. Historically, glibc versioning has been crucial in maintaining binary compatibility across different Linux distributions and releases.