How do I run an IPFS cluster?
To install ipfs, go to https://dist.ipfs.io/#go-ipfs and copy the link (see picture below) of the latest Go implementation of IPFS. At the time of writing, the latest version is Version v0. 4.18 for Ubuntu. Run the following commands (update the third and fourth line to the latest version with the copied link).
What does IPFS daemon do?
The IPFS daemon is a service that runs on a machine and allows access to other peers on the network. This is what the IPFS client manages.