How to Love K8s and Not Wreck The Planet
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This document discusses how the Kubernetes platform and cloud infrastructure can contribute to climate change through excessive resource usage and lack of efficiency. It identifies issues like "kubesprawl" where too many clusters are created, lack of visibility into resource usage that leads to "zombie workloads" consuming resources needlessly, and lack of automation and governance around the lifecycle of clusters. The document advocates for tools and practices that can improve resource utilization, add elasticity, limit creation of unnecessary clusters, help decommission zombie workloads, and make it easier for users to understand their resource usage and turn clusters off when not needed in order to reduce the environmental impact.
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How to Love K8s and Not Wreck The Planet
- 1. How to Love K8s and Not Wreck the Planet Holly Cummins IBM Garage @holly_cummins
- 13. @holly_cummins#IBMGarage there’s a bug in our 2030 flood risk graph for Tokyo … isn’t there?
- 14. @holly_cummins#IBMGarage uh … no. there’s a bug in our 2030 flood risk graph for Tokyo … isn’t there?
- 27. @holly_cummins#IBMGarage the cluster is the unit of deployment
- 33. @holly_cummins#IBMGarage control plane application manual replica count horizontal auto-scaling
- 34. @holly_cummins#IBMGarage control plane ! application clusters are less elastic than applications manual replica count horizontal auto-scaling
- 35. @holly_cummins#IBMGarage control plane ! ! application clusters are less elastic than applications every cluster has overhead
- 44. @holly_cummins#IBMGarage conway’s law is for clusters, too
- 50. @holly_cummins#IBMGarage control plane lots of applications is this a win?
- 52. @holly_cummins#IBMGarage 2017 survey 25% of 16,000 servers doing no useful work
- 53. @holly_cummins#IBMGarage 2017 survey 25% of 16,000 servers doing no useful work “perhaps someone forgot to turn them off”
- 54. @holly_cummins#IBMGarage Hey boss, I created a Kubernetes cluster.
- 55. @holly_cummins#IBMGarage Hey boss, I created a Kubernetes cluster. I forgot it for 2 months.
- 56. @holly_cummins#IBMGarage Hey boss, I created a Kubernetes cluster. I forgot it for 2 months. … and it’s £1000 a month.
- 60. @holly_cummins#IBMGarage IT Department, UK Bank let’s figure out what all these cloud workloads are, since I’m paying for them long meetings
- 61. @holly_cummins#IBMGarage IT Department, UK Bank let’s figure out what all these cloud workloads are, since I’m paying for them long meetings
- 65. @holly_cummins#IBMGarage make it easiest to do the right thing
- 66. @holly_cummins#IBMGarage make it easiest to do the right thing
- 67. @holly_cummins#IBMGarage large bank, 2013 50%reduction in CPUs with a lease system
- 68. @holly_cummins#IBMGarage large bank, 2013 50%reduction in CPUs with a lease system
- 72. @holly_cummins#IBMGarage shut it down? but … what if I need this cluster later?
- 78. @holly_cummins#IBMGarage spin it down spin it up kubectl apply -f all-my-cluster/
- 79. @holly_cummins#IBMGarage spin it down spin it up kubectl apply -f all-my-cluster/
- 80. @holly_cummins#IBMGarage spin it down spin it up kubectl apply -f all-my-cluster/
- 81. @holly_cummins#IBMGarage spinning down clusters: the new lights off?
- 82. @holly_cummins#IBMGarage unsolved problem == opportunity
- 85. @holly_cummins#IBMGarage better utilisation elasticity multi-tenancy de-zombification visibility disposability tool creators, support 1-2%
- 88. @holly_cummins#IBMGarage up utilisation aim for elasticity limit kubesprawl de-zombification know what you’re using turn it off users … 1-2%