Probably that logging in snip-snap, one-server-at-a-time, and click-clicking on various boxes in the (admittedly convenient) GUI leads to a bunch of unique snowflake[0] servers that are prone to drift. If each server is doing one thing, that&#x27;s obviously ok, but if you have 1000 web servers then treating them as immutable (aka phoenixes[1]) is conventional devops wisdom[2].<p>[0] <a href="https:&#x2F;&#x2F;www.ibm.com&#x2F;developerworks&#x2F;community&#x2F;blogs&#x2F;devops&#x2F;entry&#x2F;snowflakes_or_rubber_stamps?lang=en" rel="nofollow">https:&#x2F;&#x2F;www.ibm.com&#x2F;developerworks&#x2F;community&#x2F;blogs&#x2F;devops&#x2F;en...</a><p>[1] <a href="https:&#x2F;&#x2F;www.thoughtworks.com&#x2F;insights&#x2F;blog&#x2F;moving-to-phoenix-server-pattern-introduction" rel="nofollow">https:&#x2F;&#x2F;www.thoughtworks.com&#x2F;insights&#x2F;blog&#x2F;moving-to-phoenix...</a><p>[2] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=4226099" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=4226099</a>