I have small cluster with 8 servers. Every one has Debian 8.4 installed. I'm only one administrator. What would be the simplest solution for centralized logging with following requirements:
- Easy to install and operate (I'm only one administrator).
- Support logs from systemd services.
- Support logs for base services (NFSd, cron, dmesg, etc).
- Support file logs from applications.
- Web interface for querying logs with alerting capabilities.
Thank you!