Running microservices successfully | Bastian Hofmann | CODEiD
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The document discusses the benefits and challenges of running microservices, emphasizing the importance of deployment, configuration, monitoring, and scaling. It introduces Kubernetes as a powerful tool for managing containers and services while providing guidance on deploying applications, including a Symfony demo. The document outlines key Kubernetes concepts and configurations necessary for effective microservices management.
![[
"db_user": "user",
"db_pw": "pw",
"serviceA": "serviceA.local:8018"
]](https://image.slidesharecdn.com/runningmicroservicessuccessfully-190221125323/85/Running-microservices-successfully-Bastian-Hofmann-CODEiD-44-320.jpg)
![FROM php:7.2-apache
WORKDIR /var/www/html
RUN apt-get update -y &&
apt-get install -y --no-install-recommends curl
rm -rf /var/lib/apt/lists/*
ENV TMP_DIR /tmp
COPY . /var/www/html/
EXPOSE 80
ENTRYPOINT [“apache2”, “-DFOREGROUND”]](https://image.slidesharecdn.com/runningmicroservicessuccessfully-190221125323/85/Running-microservices-successfully-Bastian-Hofmann-CODEiD-94-320.jpg)
![spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "env" ]
env:
- name: SPECIAL_KEY
valueFrom:
configMapKeyRef:
name: special-config
key: special-key](https://image.slidesharecdn.com/runningmicroservicessuccessfully-190221125323/85/Running-microservices-successfully-Bastian-Hofmann-CODEiD-160-320.jpg)
![spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "env" ]
envFrom:
- configMapRef:
name: special-config](https://image.slidesharecdn.com/runningmicroservicessuccessfully-190221125323/85/Running-microservices-successfully-Bastian-Hofmann-CODEiD-161-320.jpg)
![spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "ls /etc/config/" ]
volumeMounts:
- name: config-volume
mountPath: /etc/config
volumes:
- name: config-volume
configMap:
name: special-config](https://image.slidesharecdn.com/runningmicroservicessuccessfully-190221125323/85/Running-microservices-successfully-Bastian-Hofmann-CODEiD-163-320.jpg)
Running microservices successfully | Bastian Hofmann | CODEiD
- 3. Monolith
- 4. http://blog.philipphauer.de/microservices-nutshell-pros-cons/ Monolith Microservices
- 5. " Microservices are great for turning method calls in to distributed computing problems https://twitter.com/tenderlove/status/1027591532847816704
- 6. Challenges
- 7. Performance
- 8. Latency
- 10. Monitoring
- 11. Learning Curves
- 12. Code Reuse
- 13. Maintenance
- 14. Benefits
- 15. Enforces stricter separation of concerns
- 20. There are good reasons to split off functionality into independent services
- 21. How to run Microservices without shooting yourself in the foot
- 22. Let's talk about • Deploying • Running • Configuring • Discovering • Monitoring • Scaling
- 23. A lot of this is also useful for monoliths
- 25. Let's define our requirements
- 26. Deployment
- 27. How to get the services on our servers?
- 29. The same approach for every service
- 30. Fast deployments
- 31. Automation
- 33. Fast rollbacks
- 34. Availability
- 37. How do I stop and start a service and ensure it keeps running?
- 40. The same approach for every service
- 42. How do I synchronize configuration over services?
- 43. Config file on disk
- 45. Duplication
- 46. Inconsistencies
- 47. Security
- 50. How does one service know where another service is?
- 51. Load balancing?
- 53. Health checks
- 54. Monitoring
- 55. How do I know how my application is behaving?
- 57. We want to measure
- 58. Latency
- 59. Availability
- 60. Throughput
- 61. We want all logs aggregated and searchable
- 62. Scaling
- 63. How can I cope with growing traffic?
- 64. Reacting to changes in traffic?
- 65. You have to take care about a lot of things when doing Microservices!
- 66. There are tools that can help us with this
- 69. Deploy, run and scale your services in isolated containers
- 70. Very Powerful
- 71. Large community
- 72. Lot’s of large company backers
- 73. Compared to other cloud technoligies
- 74. No vendor lock in
- 75. Runs on
- 76. AWS
- 77. Azure
- 79. Bare metal
- 80. Your laptop
- 81. SysEleven
- 82. Learning curve
- 83. Why containers?
- 84. Services run in isolation
- 85. Everything needed to run a service in one image
- 87. Make things …
- 88. Easier to deploy
- 89. Easier to upgrade system dependencies
- 90. Easier to scale
- 97. Kubernetes helps you running containers
- 98. Let’s define some core Kubernetes concepts
- 100. • A physical server • Containers get distributed automatically Node
- 101. • A docker image built from a Dockerfile that contains everything a service needs to run Image
- 102. • A container runs a docker image. • Only 1 process can run inside of a container Container
- 103. • A group of 1 or more containers • Same port space • Ports are not accessible from outside of the pod Pod
- 104. • Defines and manages how many instances of a pod should run Replica Set
- 105. • Manages updates and rollbacks of replica sets Deployment
- 106. • Makes a port of a pod accessible to other pods Service
- 107. • Makes a service accessible to the outside of Kubernetes Ingress
- 108. • Configuration that can be mounted inside of a container ConfigMap
- 109. • Volumes can be mounted into a container to access a ConfigMap, Secret or a folder on the host Volumes
- 110. Example
- 112. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER PHP Application POD ReplicaSet: 2 instances PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER PHP Application POD
- 113. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER ReplicaSet: 2 instances PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER CONFIG WEB :80 PHP Application POD PHP Application POD
- 114. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER ReplicaSet: 2 instances PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER CONFIG WEB :80 https://php-app.k8s.foo.com:443/ PHP Application POD PHP Application POD
- 115. Let’s deploy the symfony demo app
- 117. First we need a Kubernetes cluster
- 122. kubectl
- 123. $ kubectl get pods
- 125. Demo
- 126. Creating a Docker image
- 127. PHP
- 128. Copy our code
- 129. Build the project
- 130. Composer install
- 131. yarn install
- 132. yarn run build
- 133. Building the image
- 135. Now we have to tell Kubernetes what to do with the image
- 136. Resources are defined in YAML or JSON
- 137. Deployment
- 140. Many more options configurable
- 141. Many more options • Setting environment variables • Mounting volumes • Requesting resources • Defining upgrade strategies • Defining command • Configure networking • Configure the scheduler • Listen on lifecycle events • Configure system capabilities for the container • …
- 142. Service
- 144. Ingress
- 146. Creating everything
- 149. Rolling Deployments
- 152. Rollback
- 154. Configuration
- 155. Should not be included in the docker image
- 156. ConfigMap
- 157. Key/Value Store
- 159. Can be accessed in a pod through environment variables
- 162. Can be accessed through volumes
- 164. Service Discovery
- 165. Within a pod
- 167. Separate file systems
- 169. Network wise everything behaves like localhost
- 170. Between pods
- 171. You have to expose ports with services
- 173. Every service has a virtual IP address
- 175. Discoverable in other containers by
- 178. DNS
- 181. Service Mesh
- 185. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER PHP Application POD NodeJS ISTIO NodeJS Service POD NodeJS ISTIO NodeJS Service POD
- 186. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER PHP Application POD NodeJS ISTIO NodeJS Service POD NodeJS ISTIO NodeJS Service POD
- 187. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER PHP Application POD NodeJS ISTIO NodeJS Service POD NodeJS ISTIO NodeJS Service POD
- 188. PHP-FPM NGINX ISTIO STATSD MEM CACHED MONGO ROUTER PHP Application POD NodeJS ISTIO NodeJS Service POD NodeJS ISTIO NodeJS Service POD
- 189. Benefits
- 190. Advanced routing
- 191. Prefer service in current namespace, fall back to default namespace
- 194. Circuit Breakers https://istio.io/docs/tasks/traffic-management/circuit-breaking/
- 196. Advanced monitoring
- 198. Profiling
- 200. Monitoring
- 201. Metrics-Server
- 202. Takes metrics from Kubernetes and stores them in a monitoring solution
- 203. e.g. Prometheus
- 204. Combine with metrics of other components
- 205. Service Mesh
- 206. Your services
- 207. Grafana for displaying the data
- 210. Logging
- 211. kubectl logs
- 213. One interface
- 214. Easy to pipe into central log management system
- 215. Scaling
- 216. Manual Scaling
- 218. AutoScaling
- 220. Summary
- 221. Powerful
- 222. Helpful
- 223. Together with the whole Eco-System
- 224. And Docker
- 225. Kubernetes helps you to run microservices successfully
- 226. By standardizing Deployment, Scaling, Configuration, Monitoring, Service Discovery, Health Checks, ...
- 228. Vielen Dank für Ihre Aufmerksamkeit!