Is it safe to yum update docker-ce with containers running in swarm cluster?










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I have three Scientific Linux (for this purpose, essentially CentOS) 7 machines configured as a Docker swarm. There is a pending update from docker-ce 18.06 to 18.09. Is it safer to do a process like this on each node in turn:



  • set node to "drain"

  • reassign leadership of the swarm if this node had it

  • do the update of the node

  • set the node back to "active"

Or is the RPM update process and the swarm management sufficiently smart that I can just "yum update" each node without worrying about the other steps?










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    0















    I have three Scientific Linux (for this purpose, essentially CentOS) 7 machines configured as a Docker swarm. There is a pending update from docker-ce 18.06 to 18.09. Is it safer to do a process like this on each node in turn:



    • set node to "drain"

    • reassign leadership of the swarm if this node had it

    • do the update of the node

    • set the node back to "active"

    Or is the RPM update process and the swarm management sufficiently smart that I can just "yum update" each node without worrying about the other steps?










    share|improve this question
























      0












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      0








      I have three Scientific Linux (for this purpose, essentially CentOS) 7 machines configured as a Docker swarm. There is a pending update from docker-ce 18.06 to 18.09. Is it safer to do a process like this on each node in turn:



      • set node to "drain"

      • reassign leadership of the swarm if this node had it

      • do the update of the node

      • set the node back to "active"

      Or is the RPM update process and the swarm management sufficiently smart that I can just "yum update" each node without worrying about the other steps?










      share|improve this question














      I have three Scientific Linux (for this purpose, essentially CentOS) 7 machines configured as a Docker swarm. There is a pending update from docker-ce 18.06 to 18.09. Is it safer to do a process like this on each node in turn:



      • set node to "drain"

      • reassign leadership of the swarm if this node had it

      • do the update of the node

      • set the node back to "active"

      Or is the RPM update process and the swarm management sufficiently smart that I can just "yum update" each node without worrying about the other steps?







      docker centos7 docker-ce






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 15 '18 at 13:17









      borisboris

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