Docker In the Bank
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Docker on a local machine and Docker in production — are two big differences. It's easy to play with technology but it's hard to do something real for many customers. Half a year ago inside of AlfaLab (division of Alfa-Bank) we've started building architecture with microservices approach for few our pilot projects. We've almost completely changed a stack of the used technologies on a frontend and significantly changed it on a middle layer. For package and distribution we have choosen Docker. Two months ago we've deployed project to production and have opened service for clients. In the report the following topics will be covered: - reasons of a choice Docker; - why Docker without other tools is not enough for a production; - what stack of technologies we used in our solution; - what advantages we've got; - what problems have been faced and how we've solved them.
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Docker In the Bank
- 1. Docker in the Bank 1
- 2. Who I am? 9 years 1 and half years 4 years @aatarasoff aatarasoff Tarasov Aleksandr http://developerblog.info/ 2
- 3. localhost 3
- 4. production 4
- 5. production 5
- 6. Production localhost 6 Some Big App Test Some Big App Some Big App Some Big App Some Big App Cluster
- 7. Server 1 Java 6 J2EE Server Some Big App Server 2 Java 6 J2EE Server Some Big App Server N Java 6 J2EE Server Some Big App 7
- 8. 8
- 9. Some Big App Small App 1 Small App 3 Small App 2 9
- 10. Small App UI API 2 API 1 10
- 11. 11
- 15. 15
- 16. 16
- 17. 17
- 18. 18
- 19. 19
- 20. 20
- 21. 21
- 23. OS Oracle Java 8 Java App 1 Timezone Patch Node JS Frontend App Java App 2 23 API 1 API 2 UI
- 24. OS Oracle Java 8 Timezone Patch OS OS Oracle Java 8 Java App 1 Timezone Patch Node JS Frontend App Java App 2 24 API 1 API 2 UI
- 25. Unified API 25
- 26. docker pull docker run docker stop docker start docker logs docker stats 26
- 27. CI Registry Target Server UI API 1 API 2 UI API 1 API 2 UI API 1 API 2 UI API 1 API 2 UI API 1 API 2 27
- 29. Target Server UI API 1 API 2 -m=1024m -cpu-shares=1024 -m=512m -cpu-shares=2048 -m=1024m -cpu-shares=512 29
- 32. ..but it all is not a big deal 32
- 33. So, what is? 33
- 34. Freedom 34
- 37. 37
- 41. 41
- 42. 42
- 43. 43
- 45. NGINX role front config role api config role docker pull docker run copy template docker restart nginx copy template docker restart nginx make volume dir chmod 45
- 46. - hosts: log_servers remote_user: "{{docker_user}}" roles: - elasticsearch - kibana - hosts: api remote_user: "{{docker_user}}" roles: - { role: logstash, log_type: api } - hosts: front remote_user: "{{docker_user}}" roles: - { role: logstash, log_type: front } [log_servers] dev_server_logs_1 dev_server_logs_2 dev_server_logs_3 [api] dev_server_api_1 dev_server_api_2 [front] dev_server_front_1 dev_server_front_2 dev_server_front_3 [log_servers] prod_server_logs_1 prod_server_logs_2 prod_server_logs_3 [api] prod_server_api_1 prod_server_api_2 [front] prod_server_front_1 prod_server_front_2 prod_server_front_3 logging_init.yml development production ansible-playbook -i development logging_init.yml ansible-playbook -i production logging_init.yml 46
- 48. 10 minutes 48
- 49. ESB Service API 1 API 1 API 4 UIAPI 3
- 50. 50
- 51. dig @consul logstash.service.consul ; ANSWER SECTION: logstash.service.consul. 0 IN A 10.0.0.0 logstash.service.consul. 0 IN A 10.0.0.1 51
- 52. dig @consul logstash.service.consul ; ANSWER SECTION: logstash.service.consul. 0 IN A 10.0.0.0 logstash.service.consul. 0 IN A 10.0.0.1 52
- 53. Consul Consul Consul API UI External Service Consul Client Registrator Nginx Consul Template Consul Client register Settings 53
- 54. Consul Consul Consul API UI Consul Client Registrator Nginx Consul Template Consul Client auto register Consul Consul Consul 54
- 55. Consul Consul Consul API UI Consul Client Registrator Nginx Consul Template Consul Client listen 55
- 56. Consul Consul Consul API UI External Service Consul Client Registrator Nginx Consul Template Consul Client update conf 56
- 57. Consul Consul Consul API UI External Service Consul Client Registrator Nginx Consul Template Consul Client dns 57
- 58. Consul Consul Consul API UI External Service Consul Client Registrator Nginx Consul Template Consul Client call 58
- 59. 59
- 60. Docker doesn’t solve environment configuration problem 60
- 61. docker run … -e "SERVICE_NAME=payments-api" … /data/payments-api/conf/logback.groovy … logger('org.springframework', OFF) logger(‘ru.alfabank.api’, DEBUG) … docker run … -v /data/payments-api/conf:/conf … 61
- 62. Registry v1 62
- 63. 63
- 65. Multicast 65
- 66. docker run -d -p 8080:8080 --name my-app --net=host docker.moscow.alfaintra.net/my-app 66
- 68. /var/lib/docker/containers/*/*.log { rotate {{ logrotate_count }} daily compress size={{ logrotate_size }} missingok copytruncate } logrotate.d 68
- 69. Memory leaks 69
- 70. 70
- 71. HDD Overhead 71
- 72. Optimize your images RUN <command> && <command> && … Images hierarchy Light Linux distributives - alpine/busybox 72
- 73. Monitoring 73
- 74. Culture 74
- 77. 77
- 78. Docker - … 78
- 79. …is viable 79
- 80. …solves many problems, but not all 80
- 82. Thank you! Who have a questions? 82 @aatarasoff aatarasoff Tarasov Aleksandr http://developerblog.info/