August 2017
Intermediate to advanced
332 pages
9h 16m
English
Content preview from Continuous Delivery with Docker and Jenkins
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Scaling service
When the service is running, we can scale it up or down so that it will be running in many replicas:
$ docker service scale tomcat=5tomcat scaled to 5
We can check that the service has been scaled:
$ docker service ps tomcatID NAME IMAGE NODE DESIRED STATE CURRENT STATE kjy1udwcnwmi tomcat.1 tomcat:latest ubuntu-manager Running Running 2 minutes ago 536p5zc3kaxz tomcat.2 tomcat:latest ubuntu-worker2 Running Preparing 18 seconds ago npt6ui1g9bdp tomcat.3 tomcat:latest ubuntu-manager Running Running 18 seconds ago zo2kger1rmqc tomcat.4 tomcat:latest ubuntu-worker1 Running Preparing 18 seconds ago 1fb24nf94488 tomcat.5 tomcat:latest ubuntu-worker2 Running Preparing 18 seconds ago
Note that this time, two containers are running ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.