Official requirements for SonarQube can be found here.
Official requirements for Jenkins can be found here.
An example of a typical CodeScan Self-Hosted requires:
- 2 CPUs (Equivalent to AWS t2.large)
- 8GB RAM
- 100GB Disk
- Modern Linux OS
Note: depending on your use-case, this may be way too much or too little. As SonarQube stores all snapshots for a long time, the data can build up for a large project. Additionally, heavy usage for users would cause more load.