./dragonfly --logtostderr
./dragonfly: /lib64/libm.so.6: version GLIBC_2.29' not found (required by ./dragonfly) ./dragonfly: /lib64/libc.so.6: version GLIBC_2.27’ not found (required by ./dragonfly)
./dragonfly: /lib64/libc.so.6: version GLIBC_2.30' not found (required by ./dragonfly) ./dragonfly: /lib64/libc.so.6: version GLIBC_2.18’ not found (required by ./dragonfly)
./dragonfly: /lib64/libc.so.6: version `GLIBC_2.25’ not found (required by ./dragonfly)
did you use this package ?
https://github.com/dragonflydb/dragonfly/releases/download/v1.14.5/dragonfly.x86_64.rpm
Still same issue
rpm -i dragonfly.x86_64.rpm
error: Failed dependencies:
libc.so.6(GLIBC_2.18)(64bit) is needed by dragonfly-v1.14.5-1.fc30.x86_64
libc.so.6(GLIBC_2.25)(64bit) is needed by dragonfly-v1.14.5-1.fc30.x86_64
libc.so.6(GLIBC_2.27)(64bit) is needed by dragonfly-v1.14.5-1.fc30.x86_64
libm.so.6(GLIBC_2.29)(64bit) is needed by dragonfly-v1.14.5-1.fc30.x86_64
@engaging-meerkat unfortunately it’s not possible to build this project on Centos7.
See https://bugzilla.redhat.com/show_bug.cgi?id=1546704 our code requires _GLIBCXX_USE_CXX11_ABI=1 setting enabled and it’s not possible in this old kernel.
Is there any disadvantages if i upgrade the kernel?
Which centos version is suitable to do so?
I am not an expert in linux distributions. Especially given that CentOs reached end of life and does not exist anymore. I suggest you google for alternatives. I personally use debian distributions, so I am the last person you want to consult about RHEL flavors 
having said that CentOS7 is very old distribution and I suggest replacing it with something modern.