在 ambari.repo 中 enable=1 和 priority=1 是什麼意思？

當我這樣做時，cat ambari.repo我可以看到最後兩行顯示 enable=1和priority=1。這背後的意義是什麼？

從man yum.conf

         enabled  Either  `1'  or  `0'. This tells yum whether or not use
         this repository.

和

         During depsolving, when choosing the
         best provider among several, yum will respect  the  priority  of
         each  provider's  repository  (note that there are other factors
         which yum considers, which may overweigh the  repository  prior-
         ity).  The  value  is  an integer from 1 to 99, 1 being the most
         preferred repository, and 99 being the least preferred  one.  By
         default all repositories have the priority of 80.

引用自：https://unix.stackexchange.com/questions/487681