Yum doesn't show all installed packages

Question

I have logstash installed on one of my CentOS 7 hosts. When I run the sudo yum list installed command, it is not on the list. When I try to install logstash, yum offers me a fresh install. What could be the reason for this behavior?

Answer 1

Probably logstash was installed manually then, and not by yum / rpm . You can check this by asking rpm (which is used by yum under the hood):

rpm -qf /path/to/logstash-binary

translation: to which package does /path/to/logstash-binary belong. Then you'll know if it belongs to an rpm package. If not, that means the binary was installed in some other way (unzipping, ...). rpm (and hence yum ) has no knowledge of any files not installed by an rpm package.