Tips and tricks to elevate your kubernetes game (3)

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Have you dipped your toe in the Kubernetes water? It’s time to take your skills to the next level and learn the tips and tricks voted most useful by Kubernetes power users. In this session, Alan Hand will cover a variety of topics that will fast track your Kubernetes journey including monitoring, logging, and RBAC.

Technology

I N T E L L I G E N T C L O U D O R C H E S T R A T I O N
© 2019 Xosphere, Inc.
Tips and Tricks to Elevate
Your Kubernetes Game
Presented by Alan Hand
Founder and CEO of Xosphere
March 20, 2019

2
Who is this guy?
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME
Alan Hand
Father
Engineer
Entrepreneur

3
Kubernetes – Day 1
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME4
Kubernetes – Day 2

5
Reasons to Pull Your Hair Out
-Provisioning
-Registry and Package Management
-Ingress and Load Balancing
-Monitoring and Logging
-CI/CD Toolchain
-RBAC and Security
-Governance
-Cost Optimization
-Federation
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

6
kubectl
kube control?
kube cuddle?
kube c t l?
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

7
Tip #1
Use Autocomplete and
Aliases
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME
echo "source <(kubectl completion bash)" >> ~/.bashrc
alias k=kubectl
complete -F __start_kubectl k

8
Provisioning Options
-kubeadm
-kops
-Terraform
-Rancher
-OpenShift
-CaaS
-many others…
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

9
Tip #2
Use CaaS in cloud
environments
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

10
Monitoring Metrics
Cluster metrics
-Node resource utilization
-Number of Nodes
-Number of running Pods
Pod metrics
-Kubernetes metrics
-Container metrics
-Application metrics
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

11
Monitoring Solutions
Heapster, InfluxDB, and Grafana
Prometheus and Grafana
Heapster + ELK
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

12
Tip #3
Define labels with a
logical and easy-to-
understand schema
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME
{ app: myapp, tier: frontend, env: test,
deployment: v3 }

13
What the EFK?
Cluster-level logging is not
offered natively
Elasticseach + FluentD +
Kibana to the rescue
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

14
Tip #4
Configure logs to use
JSON formatting
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME
<source>
@type tail
path /var/lib/docker/containers/*/*.log
pos_file /var/log/fluentd-docker.pos
tag docker.*
format json
read_from_head true
</source>

15
RBAC Policies Are Not Optional
Support multiple users
Control operations each user can
execute
Control operations each process
inside a Pod can execute
Limit visibility of resources and
namespaces
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

16
RBAC Elements
Subjects
Resources
Verbs
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

17
Users vs. ServiceAccounts
Users
global, meant for humans
ServiceAccounts
namespaced, meant for
processes running in Pods
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

18
Tip #5
Use ServiceAccounts per
deployment with
minimum set of privileges
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

19
PodSecurityPolicy
Lists the conditions a Pod
must meet in order to run
in the cluster
Can be associated to
ServiceAccounts
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

20
PodSecurityPolicy
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME
apiVersion: extensions/v1beta1
kind: PodSecurityPolicy
metadata:
name: example
spec:
privileged: false
runAsUser:
rule: MustRunAsNonRoot
seLinux:
rule: RunAsAny
fsGroup:
rule: RunAsAny
supplementalGroups:
rule: RunAsAny
volumes:
- 'nfs’
hostPorts:
- min: 100
max: 100

21
Teams Are Like Siblings
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

22
Tip #6
Use namespaces to
segregate teams and
ResourceQuota to limit
consumption
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

23
ResourceQuota
Limit compute, storage,
and/or object counts
Can be scoped by
PriorityClass
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

24
PriorityClass
Indicates importance of a
Pod relative to other Pods
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME
apiVersion: scheduling.k8s.io/v1beta1
kind: PriorityClass
metadata:
name: high-priority
value: 1000000
globalDefault: false
description: "This priority class should be used for
XYZ service pods only."

25
LimitRange
Similar to ResourceQuota
at the Pod or container
level
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

26
Tip #7
Use default LimitRange to
prevent accidental
resource leaks from
impacting other Pods
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

27
Cost Optimization Opportunities
Choose the right instance size
Use autoscaler to terminate
underutilized Nodes
Resize Pods
Use horizontal Pod autoscaler to
terminate idle Pods
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

28
See Spot Run
Significant savings up to 80%
No guarantees on availability
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

29
Tip #8
Use Xosphere to run
Nodes on Spot while
maintaining reliability and
availability
TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

Thank You
alan@xosphere.io 310.487.5851
30 © 2019 Xosphere, Inc.TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

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Tips and tricks to elevate your kubernetes game (3)

2. 2 Who is this guy? TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME Alan Hand Father Engineer Entrepreneur

3. 3 Kubernetes – Day 1 TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

4. TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME4 Kubernetes – Day 2

5. 5 Reasons to Pull Your Hair Out -Provisioning -Registry and Package Management -Ingress and Load Balancing -Monitoring and Logging -CI/CD Toolchain -RBAC and Security -Governance -Cost Optimization -Federation TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

6. 6 kubectl kube control? kube cuddle? kube c t l? TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

7. 7 Tip #1 Use Autocomplete and Aliases TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME echo "source <(kubectl completion bash)" >> ~/.bashrc alias k=kubectl complete -F __start_kubectl k

8. 8 Provisioning Options -kubeadm -kops -Terraform -Rancher -OpenShift -CaaS -many others… TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

9. 9 Tip #2 Use CaaS in cloud environments TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

10. 10 Monitoring Metrics Cluster metrics -Node resource utilization -Number of Nodes -Number of running Pods Pod metrics -Kubernetes metrics -Container metrics -Application metrics TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

11. 11 Monitoring Solutions Heapster, InfluxDB, and Grafana Prometheus and Grafana Heapster + ELK TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

12. 12 Tip #3 Define labels with a logical and easy-to- understand schema TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME { app: myapp, tier: frontend, env: test, deployment: v3 }

13. 13 What the EFK? Cluster-level logging is not offered natively Elasticseach + FluentD + Kibana to the rescue TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

14. 14 Tip #4 Configure logs to use JSON formatting TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME <source> @type tail path /var/lib/docker/containers/*/*.log pos_file /var/log/fluentd-docker.pos tag docker.* format json read_from_head true </source>

15. 15 RBAC Policies Are Not Optional Support multiple users Control operations each user can execute Control operations each process inside a Pod can execute Limit visibility of resources and namespaces TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

16. 16 RBAC Elements Subjects Resources Verbs TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

17. 17 Users vs. ServiceAccounts Users global, meant for humans ServiceAccounts namespaced, meant for processes running in Pods TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

18. 18 Tip #5 Use ServiceAccounts per deployment with minimum set of privileges TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

19. 19 PodSecurityPolicy Lists the conditions a Pod must meet in order to run in the cluster Can be associated to ServiceAccounts TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

20. 20 PodSecurityPolicy TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME apiVersion: extensions/v1beta1 kind: PodSecurityPolicy metadata: name: example spec: privileged: false runAsUser: rule: MustRunAsNonRoot seLinux: rule: RunAsAny fsGroup: rule: RunAsAny supplementalGroups: rule: RunAsAny volumes: - 'nfs’ hostPorts: - min: 100 max: 100

21. 21 Teams Are Like Siblings TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

22. 22 Tip #6 Use namespaces to segregate teams and ResourceQuota to limit consumption TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

23. 23 ResourceQuota Limit compute, storage, and/or object counts Can be scoped by PriorityClass TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

24. 24 PriorityClass Indicates importance of a Pod relative to other Pods TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME apiVersion: scheduling.k8s.io/v1beta1 kind: PriorityClass metadata: name: high-priority value: 1000000 globalDefault: false description: "This priority class should be used for XYZ service pods only."

25. 25 LimitRange Similar to ResourceQuota at the Pod or container level TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

26. 26 Tip #7 Use default LimitRange to prevent accidental resource leaks from impacting other Pods TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

27. 27 Cost Optimization Opportunities Choose the right instance size Use autoscaler to terminate underutilized Nodes Resize Pods Use horizontal Pod autoscaler to terminate idle Pods TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

28. 28 See Spot Run Significant savings up to 80% No guarantees on availability TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

29. 29 Tip #8 Use Xosphere to run Nodes on Spot while maintaining reliability and availability TIPS AND TRICKS TO ELEVATE YOUR KUBERNETES GAME

Tips and tricks to elevate your kubernetes game (3)

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