Second that. I tried to use ELK stack for application logs but it felt too windows-ish. I had to use my mouse and a lot of mouse-clicking to find what I needed. I was happy at my previous job when we had a single log-server which we ssh-ed to and got access to logs from all machines via NFS. It wasn't the fastest way to examine logs but it was very comfortable using all these grep, awk, sed, cut and etc tools.