What Linux does SpaceX use?

I'm curious to know, could you elaborate on the specific Linux distribution that SpaceX utilizes for their operations? As a company that pushes the boundaries of space exploration, I'm sure they have rigorous requirements for their computing infrastructure. What specific features or advantages does this Linux variant offer that aligns with SpaceX's mission and technical needs? I'm particularly interested in understanding how this choice impacts their overall systems performance, security, and the ability to support their innovative projects.