At work, many times, we need to connect to the server to enter the rails c query or some data. When the operator has plenty of time, the situation is relatively good; if an operator is responsible for many servers at the same time, it will waste a lot of time to help with the query; to solve this problem, I want to find a secure and convenient query console, after searching some gem, found and did not meet my expectations gem, so decided to write a related function of the console designed to provide a safe, convenient web.