How to download and setup gateway
Open terminal and run command
                                            git clone https://github.com/signalfx/gateway.git
                                        
                                        git clone is used to create a copy or clone of gateway repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with gateway https://github.com/signalfx/gateway/archive/master.zip
Or simply clone gateway with SSH
                                            [email protected]:signalfx/gateway.git                                    
                                    If you have some problems with gateway
You may open issue on gateway support forum (system) here: https://github.com/signalfx/gateway/issuesSimilar to gateway repositories
Here you may see gateway alternatives and analogs
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