Debian 7 Gitlab `GLIBC_2.14 not found`

Debian 7 wheezy安装GitLab 7.6.0后执行gitlab-ctl reconfigure出现错误提示versionGLIBC_2.14' not found`.

查看当前系统libc6版本:

# sudo aptitude show libc6

Package: libc6                           
State: installed
Automatically installed: no
Multi-Arch: same
Version: 2.13-38+deb7u1
Priority: required
Section: libs
Maintainer: GNU Libc Maintainers 
Architecture: amd64
Uncompressed Size: 9,751 k
Depends: libc-bin (= 2.13-38+deb7u1), libgcc1
Suggests: glibc-doc, debconf | debconf-2.0, locales
Conflicts: prelink (<= 0.0.20090311-1), tzdata (< 2007k-1), tzdata-etch
Breaks: locales (< 2.13), locales-all (< 2.13), lsb-core (<= 3.2-27), nscd (< 2.13)
Replaces: libc6-amd64
Provides: glibc-2.13-1
Description: Embedded GNU C Library: Shared libraries
 Contains the standard libraries that are used by nearly all programs on the system. This package includes shared versions of the standard C library and the standard math library, as
 well as many others.
Homepage: http://www.eglibc.org

版本过老，添加Unstable源，deb http://mirrors.kernel.org/debian/ unstable main contrib non-free，再次安装libc6，之后查看版本：

# sudo aptitude show libc6

Package: libc6                           
State: installed
Automatically installed: no
Multi-Arch: same
Version: 2.19-19
Priority: required
Section: libs
Maintainer: GNU Libc Maintainers 
Architecture: amd64
Uncompressed Size: 10.8 M
Depends: libgcc1
Suggests: glibc-doc, debconf | debconf-2.0, locales
Conflicts: prelink (<= 0.0.20090311-1), tzdata (< 2007k-1), tzdata-etch
Breaks: hurd (< 1:0.5.git20140203-1), libtirpc1 (< 0.2.3), locales (< 2.19),
        locales-all (< 2.19), lsb-core (<= 3.2-27), nscd (< 2.19)
Replaces: libc6-amd64
Description: GNU C Library: Shared libraries
 Contains the standard libraries that are used by nearly all programs on the
 system. This package includes shared versions of the standard C library and the
 standard math library, as well as many others.
Homepage: http://www.gnu.org/software/libc/libc.html