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StatefulSets in K8s - DoK Talks #154

DoKC
DoKC

https://go.dok.community/slack https://dok.community/ Link: https://youtu.be/n_thXwyJNSU ABSTRACT OF THE TALK Deploying Stateless applications is easy but this is not the case for Stateful applications. StatefulSets are the K8s API object that helps to manage stateful application. Learn about what Stateful sets are, how to create, How it differs from Deployments. KEY TAKE-AWAYS FROM THE TALK This talk is focused on basics of StatefulSet, how StatefulSet differs from Deployments, How to manage Stateful app using StatefulSet

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S T A T E F U L S E T S W H A T , W H Y , H O W ?
Stateful and Stateless applications 01 We have Deployments, then what's the issue? 02 What are StatefulSets? 03 Demo 04 T O D A Y ' S A G E N D A
Stateful services keep track of sessions or transactions and perform operations based on that history. Stateless services don't keep the state of the previous session. S T A T E F U L & S T A T E L E S S
S T A T E F U L & S T A T E L E S S
W E H A V E D E P L O Y M E N T S , T H E N W H Y ? ? A Deployment provides declarative updates for Pods and ReplicaSets. Deployments create pods with the random hash attached to its name ( no persistent name) Deletion of pods will be done randomly, so can't trust the connection using their DNS name. Each Pod shares the same PV Ungraceful termination
S T A T E F U L S E T S StatefulSet is the workload API object used to manage stateful applications. Manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods. Creates and terminates Pods one by one Every Pod has an Persistent Identity Each pod has saparate PV
D E M O h t t p s : / / g i t h u b . c o m / k a r n a t i s r i n i v a s / D o k - S t a t e f u l S e t s
E-mail srinivas@srinivaskarnati.in Twitter twitter.com/__karnati T H A N K Y O U Linkedin linkedin.in/in/srinivas-karnati

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StatefulSets in K8s - DoK Talks #154

  • 1. S T A T E F U L S E T S W H A T , W H Y , H O W ?
  • 2. Stateful and Stateless applications 01 We have Deployments, then what's the issue? 02 What are StatefulSets? 03 Demo 04 T O D A Y ' S A G E N D A
  • 3. Stateful services keep track of sessions or transactions and perform operations based on that history. Stateless services don't keep the state of the previous session. S T A T E F U L & S T A T E L E S S
  • 4. S T A T E F U L & S T A T E L E S S
  • 5. W E H A V E D E P L O Y M E N T S , T H E N W H Y ? ? A Deployment provides declarative updates for Pods and ReplicaSets. Deployments create pods with the random hash attached to its name ( no persistent name) Deletion of pods will be done randomly, so can't trust the connection using their DNS name. Each Pod shares the same PV Ungraceful termination
  • 6. S T A T E F U L S E T S StatefulSet is the workload API object used to manage stateful applications. Manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods. Creates and terminates Pods one by one Every Pod has an Persistent Identity Each pod has saparate PV
  • 7. D E M O h t t p s : / / g i t h u b . c o m / k a r n a t i s r i n i v a s / D o k - S t a t e f u l S e t s
  • 8. E-mail srinivas@srinivaskarnati.in Twitter twitter.com/__karnati T H A N K Y O U Linkedin linkedin.in/in/srinivas-karnati