[bug] GLIBC not found with version 4.1.3 on ubuntu 20.04 focal

[GregOriol]

Hi,

On ubuntu 20.04, centrifugo version 4.1.3 installed via apt with the debs provided at https://packagecloud.io/FZambia/centrifugo (following the installation instructions here: https://centrifugal.dev/docs/getting-started/installation#rpm-and-deb-packages-for-linux) seem to have an issue when trying to run it:

$ centrifugo -c /etc/centrifugo/config.toml
centrifugo: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by centrifugo)
centrifugo: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by centrifugo)

Centrifugo version 4.1.2 installed the same way works well on the same system.

System is:

$ uname -a
Linux [...] 5.4.0-139-generic #156-Ubuntu SMP Fri Jan 20 17:27:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.6 LTS
Release:	20.04
Codename:	focal
$ ldd --version
ldd (Ubuntu GLIBC 2.31-0ubuntu9.9) 2.31

Is is possible that the build process has changed and uses a more recent version of ubuntu which tries to link glibc with a newer version?

[FZambia]

Hello @GregOriol

Unfortunate :( Seems like it's a common trouble within the ecosystem:

• cmd/go: cgo-enabled binary built with Ubuntu 22.04 is incompatible with Ubuntu 20.04 golang/go#57328
• /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found golang/go#58550

The solution seems to be using CGO_ENABLED=0 in our deb/rpm build process. Could you please verify that the binary release centrifugo_4.1.3_linux_amd64.tar.gz:

https://github.com/centrifugal/centrifugo/releases/download/v4.1.3/centrifugo_4.1.3_linux_amd64.tar.gz

– loaded from https://github.com/centrifugal/centrifugo/releases/tag/v4.1.3 page works fine on your Ubuntu server (for those binaries CGO_ENABLED=0 is already used)

[GregOriol]

@FZambia Yeah I don't know much about Go, but I've found the same links before opening the issue.

The file you link to https://github.com/centrifugal/centrifugo/releases/download/v4.1.3/centrifugo_4.1.3_linux_amd64.tar.gz works fine! Seems that CGO_ENABLED=0 is indeed the solution to this problem.

[FZambia]

Fixed the build script, also manually triggered re-build and upload of DEB/RPM packages with the next iteration number - see on top of the list - 4.1.3-1. @GregOriol – could you please try it ?

[GregOriol]

@FZambia It's good with version 4.1.3-1 :-)

[FZambia]

Thanks for the report!