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Converting Your Dev Environment to a Docker Stack - Cascadia

The document discusses converting a development environment to a Docker stack. It describes some of the benefits of using Docker for consolidating different environments that may have varying PHP and MySQL versions. It provides an example docker-compose.yml file that defines services for Nginx, MySQL, and PHP-FPM containers along with networking and volume configurations. It also includes some sidebars on Docker concepts like the hierarchy of images, containers, services and stacks, as well as common Docker commands.

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Converting Your Dev Environment to a Docker Stack Dana Luther https://joind.in/talk/3d360 https://git.io/Je3qd @danaluther
Consolidated Work Stack PHP 7.0 FPM NGINX MySQL
Consolidated Work Stack Friend A PHP 5.6 Apache MySQL PHP 7.0 FPM NGINX MySQL
Consolidated Work Stack Friend A PHP 5.6 Apache MySQL Cause B PHP 7.1 FPM NGINX MySQL PHP 7.0 FPM NGINX MySQL
Licensed Application
Licensed Application PHP 5.6 Apache MySQL 5.3 Client A
Licensed Application PHP 5.6 Apache MySQL 5.3 Client A Client B PHP 7.1 Apache MySQL 5.4
Licensed Application Client C PHP 5.6 FPM NGINX MySQL 5.2 PHP 5.6 Apache MySQL 5.3 Client A Client B PHP 7.1 Apache MySQL 5.4
Licensed Application Client D PHP 7.1 FPM NGINX MySQL 5.3 Client C PHP 5.6 FPM NGINX MySQL 5.2 PHP 5.6 Apache MySQL 5.3 Client A Client B PHP 7.1 Apache MySQL 5.4
THERE IS A BETTER WAY
THERE IS A BETTER WAY
VM PHP 7.0 FPM NGINX MySQL
VM PHP 7.0 FPM NGINX MySQL
So, how does that work??? 🤔 ? ? ? ?
docker-compose.yml Docker Compose Version Services in the Stack Configurations, Secrets, Storage Volumes, etc. Version: “3.7” services: nginx: image: nginx command: [ 'sh', '-c', "exec nginx -g 'daemon off;'" ] … php: image: php:7.2-fpm … network: web_frontend config: nginx.conf: file: ./nginx/nginx.conf volumes: …https://docs.docker.com/compose/compose-file/
SIDEBAR:The Docker Hierarchy
SIDEBAR:The Docker Hierarchy Image Container Service Stack
SIDEBAR:The Docker Hierarchy Image Container Service Stack Node Swarm
> docker stack deploy … Swarm NODE 1 NODE 2 ETC. PHP 1 MySQL NGINX PHP 2
SIDEBAR:Docker Command Syntax docker (object) (action) (args)
SIDEBAR:Docker Command Syntax docker (object) (action) (args) > docker container ls
SIDEBAR:Docker Command Syntax docker (object) (action) (args) > docker container ls > docker image ls
SIDEBAR:Docker Command Syntax docker (object) (action) (args) > docker container ls > docker image ls > docker service ls
SIDEBAR:Docker Command Syntax docker (object) (action) (args) > docker container ls > docker image ls > docker service ls > docker volume ls
SIDEBAR:Docker Command Syntax docker (object) (action) (args) > docker container ls > docker image ls > docker service ls > docker volume ls image container stack service config network node plugin swarm Objects
SIDEBAR:Docker Command Syntax docker (object) (action) (args) > docker container ls > docker image ls > docker service ls > docker volume ls image container stack service config network node plugin swarm Objects ls ps prune inspect create remove / rm Common Actions
The swarm … Node Manager Node Worker Node Worker Node Worker
Node Manager A SWARM OF ONE > docker swarm init
Node Manager A SWARM OF ONE > docker swarm init
⚠ Common “Gotcha” Swarm init — ONE TIME ONLY * THE SWARM PERSISTS *
⚠ Common “Gotcha” Swarm init — ONE TIME ONLY * THE SWARM PERSISTS * > docker swarm leave
⚠ Common “Gotcha” Swarm init — ONE TIME ONLY * THE SWARM PERSISTS * > docker swarm leave > docker swarm leave —force
POPQUIZ!
POPQUIZ! A. What’s the difference between a container and a service?
POPQUIZ! A. What’s the difference between a container and a service? B. What’s the difference between a service and a stack?
Commonly Useful Images: mysql php nginx httpd node redis wordpress composer memcached alpine postgres busybox https://store.docker.com
Commonly Useful Images: mysql php nginx httpd node redis wordpress composer memcached alpine postgres busybox phpmyadmin/phpmyadmin https://store.docker.com
Commonly Useful Images: mysql php nginx httpd node redis wordpress composer memcached alpine postgres busybox phpmyadmin/phpmyadmin https://store.docker.com BONUS POP QUIZ!
Commonly Useful Images: mysql php nginx httpd node redis wordpress composer memcached alpine postgres busybox phpmyadmin/phpmyadmin https://store.docker.com BONUS POP QUIZ! How do you pull an image manually?
Commonly Useful Images: mysql php nginx httpd node redis wordpress composer memcached alpine postgres busybox phpmyadmin/phpmyadmin https://store.docker.com > docker image pull mysql:latest BONUS POP QUIZ! How do you pull an image manually?
Images for Automated Testing selenium/standalone-chrome-debug selenium/standalone-firefox-debug:2.53.0 acceptance.suite.yml docker-compose.yml
Images for Automated Testing selenium/standalone-chrome-debug selenium/standalone-firefox-debug:2.53.0 acceptance.suite.yml docker-compose.yml
SIDEBAR:Legacy images, containers, volumes > docker image prune > docker container prune > docker (whatever) prune
SIDEBAR:Legacy images, containers, volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
SIDEBAR:Legacy images, containers, volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
SIDEBAR:Legacy images, containers, volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
SIDEBAR:Legacy images, containers, volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
version: “3.7” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt version: “3.7” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd PHP 7.0 FPM NGINX MySQL
php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] PHP 7.0 FPM NGINX MySQL
php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] PHP 7.0 FPM NGINX MySQL
SIDEBAR:LABELS — use them everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
SIDEBAR:LABELS — use them everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
SIDEBAR:LABELS — use them everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
SIDEBAR:LABELS — use them everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
version: “3.7” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
Volume Example for php php: volumes: - ./public_html:/var/ www/html Local path relative to the file Path location within the container
Using named storage volumes Volumes: pub_html: external: true … php: volumes: - pub_html:/var/ www/html Volume name Path location within the container > docker volume create pub_html —opt type=none —opt o=bind —opt device=/Volumes/E/site/ —label “com.envisage.desc=Site”
Using named storage volumes > docker volume create pub_html —opt type=none —opt o=bind —opt device=/Volumes/E/site/ —label “com.envisage.desc=Site”
⚠ Common “Gotcha” * BEWARE WINDOWS PATHS * C:DockerDriveSite /C/DockerDrives/Site /host_mnt/c/DockerDrives/Site //c/DockerDrives/Site Windows LCOW Volume Path
POPQUIZ!
POPQUIZ! A. What is the command to initialize a swarm?
POPQUIZ! A. What is the command to initialize a swarm? B. What is the command to deploy a docker stack?
> docker stack deploy -c docker-compose.yml cascadia
> docker stack deploy -c docker-compose.yml cascadia
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ?
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls > docker stack ps cascadia
> docker stack deploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls > docker stack ps cascadia
> docker service logs cascadia_db
> docker service logs cascadia_db
> docker service logs cascadia_db
> docker service logs cascadia_db
Want to see it in action? > docker service logs cascadia_nginx -f
Want to see it in action? > docker service logs cascadia_nginx -f
Want to see it in action? > docker service logs cascadia_nginx -f
Want to see it in action? > docker service logs cascadia_nginx -f
Want to see it in action? > docker service logs cascadia_nginx -f
⚠ Common “Gotcha” localhost:3306 db:3306
⚠ Common “Gotcha” localhost:3306 db:3306 upstream fastcgi { server 127.0.0.1:9000 } upstream fastcgi { server php:9000 }
Ok, great! But … ¯_(ツ)_/¯ My production server has lots of configurations that have been customized… php/conf.d/* my.cnf nginx.conf nginx/conf.d/*
version: “3.7” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
version: “3.7” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.d volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.de command: [‘bin/sh’, ‘-c’, “sleep networks: web: configs: mysite: file: ./mysite.conf secrets: PHP 7.0 FPM NGINX MySQL
Config: mysite
Config: mysite > docker config inspect cascadia_mysite
version: “3.4” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
Secret: db_pwd
Secret: db_pwd > docker secret inspect cascadia_db_pwd
⚠ Common “Gotcha” > docker config ls
⚠ Common “Gotcha” > docker config ls
⚠ Common “Gotcha” > docker config create mysite.2 ./mysite.conf > docker config ls
⚠ Common “Gotcha” > docker config create mysite.2 ./mysite.conf > docker config ls
⚠ Common “Gotcha” > docker config create mysite.2 ./mysite.conf > docker config ls
⚠ Common “Gotcha” > docker config create mysite.2 ./mysite.conf > docker config ls
⚠ Common “Gotcha” > docker config create mysite.2 ./mysite.conf > docker config ls > docker service update --config-rm cascadia_mysite --config-add source=mysite.2,target=/etc/nginx/conf.d/default.conf cascadia_nginx
⚠ Common “Gotcha” > docker config create mysite.2 ./mysite.conf > docker config ls > docker service update --config-rm cascadia_mysite --config-add source=mysite.2,target=/etc/nginx/conf.d/default.conf cascadia_nginx
> docker service rollback cascadia_nginx
> docker service rollback cascadia_nginx
Done with the project for now? > docker stack rm cascadia
Done with the project for now? > docker stack rm cascadia
Done with the project for now? > docker stack rm cascadia
Done with the project for now? > docker stack rm cascadia
POPQUIZ!
POPQUIZ! A. How do you check the replication status of services?
POPQUIZ! A. How do you check the replication status of services? B. How do you check for error messages on the stack?
POPQUIZ! A. How do you check the replication status of services? B. How do you check for error messages on the stack? BONUS POINT
POPQUIZ! A. How do you check the replication status of services? B. How do you check for error messages on the stack? BONUS POINT How do you avoid truncating the error message?
POPQUIZ! A. How do you check the replication status of services? B. How do you check for error messages on the stack? > docker stack ps vm --no-trunc BONUS POINT How do you avoid truncating the error message?
Same project … multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
Same project … multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
Same project … multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
Same project … multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
POPQUIZ!
POPQUIZ! A. How do you filter a list of docker objects (services, containers, images, etc)
SIDEBAR:The $( ) magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this)
SIDEBAR:The $( ) magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l
SIDEBAR:The $( ) magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l
SIDEBAR:The $( ) magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l > docker container exec -it $(docker ps -lq -f name=cascadia_nginx) bash
SIDEBAR:The $( ) magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l > docker container exec -it $(docker ps -lq -f name=cascadia_nginx) bash
SIDEBAR:The $( ) magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l > docker container exec -it $(docker ps -lq -f name=cascadia_nginx) bash
Questions?? https://joind.in/talk/3d360 🤔 ? ? ? ? @danaluther https://www.linkedin.com/in/danaluther dluther@envisageinternational.com https://git.io/Je3qd

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Converting Your Dev Environment to a Docker Stack - Cascadia

  • 1.
    Converting Your DevEnvironment to a Docker Stack Dana Luther https://joind.in/talk/3d360 https://git.io/Je3qd @danaluther
  • 2.
    Consolidated Work Stack PHP7.0 FPM NGINX MySQL
  • 3.
    Consolidated Work Stack FriendA PHP 5.6 Apache MySQL PHP 7.0 FPM NGINX MySQL
  • 4.
    Consolidated Work Stack FriendA PHP 5.6 Apache MySQL Cause B PHP 7.1 FPM NGINX MySQL PHP 7.0 FPM NGINX MySQL
  • 5.
  • 6.
  • 7.
    Licensed Application PHP 5.6 Apache MySQL 5.3 ClientA Client B PHP 7.1 Apache MySQL 5.4
  • 8.
    Licensed Application Client C PHP 5.6FPM NGINX MySQL 5.2 PHP 5.6 Apache MySQL 5.3 Client A Client B PHP 7.1 Apache MySQL 5.4
  • 9.
    Licensed Application Client D PHP 7.1FPM NGINX MySQL 5.3 Client C PHP 5.6 FPM NGINX MySQL 5.2 PHP 5.6 Apache MySQL 5.3 Client A Client B PHP 7.1 Apache MySQL 5.4
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
    So, how doesthat work??? 🤔 ? ? ? ?
  • 15.
    docker-compose.yml Docker Compose Version Servicesin the Stack Configurations, Secrets, Storage Volumes, etc. Version: “3.7” services: nginx: image: nginx command: [ 'sh', '-c', "exec nginx -g 'daemon off;'" ] … php: image: php:7.2-fpm … network: web_frontend config: nginx.conf: file: ./nginx/nginx.conf volumes: …https://docs.docker.com/compose/compose-file/
  • 16.
  • 17.
    SIDEBAR:The Docker Hierarchy ImageContainer Service Stack
  • 18.
    SIDEBAR:The Docker Hierarchy ImageContainer Service Stack Node Swarm
  • 19.
    > docker stackdeploy … Swarm NODE 1 NODE 2 ETC. PHP 1 MySQL NGINX PHP 2
  • 20.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args)
  • 21.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args) > docker container ls
  • 22.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args) > docker container ls > docker image ls
  • 23.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args) > docker container ls > docker image ls > docker service ls
  • 24.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args) > docker container ls > docker image ls > docker service ls > docker volume ls
  • 25.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args) > docker container ls > docker image ls > docker service ls > docker volume ls image container stack service config network node plugin swarm Objects
  • 26.
    SIDEBAR:Docker Command Syntax docker(object) (action) (args) > docker container ls > docker image ls > docker service ls > docker volume ls image container stack service config network node plugin swarm Objects ls ps prune inspect create remove / rm Common Actions
  • 27.
  • 28.
    Node Manager A SWARM OFONE > docker swarm init
  • 29.
    Node Manager A SWARM OFONE > docker swarm init
  • 30.
    ⚠ Common “Gotcha” Swarminit — ONE TIME ONLY * THE SWARM PERSISTS *
  • 31.
    ⚠ Common “Gotcha” Swarminit — ONE TIME ONLY * THE SWARM PERSISTS * > docker swarm leave
  • 32.
    ⚠ Common “Gotcha” Swarminit — ONE TIME ONLY * THE SWARM PERSISTS * > docker swarm leave > docker swarm leave —force
  • 33.
  • 34.
    POPQUIZ! A. What’sthe difference between a container and a service?
  • 35.
    POPQUIZ! A. What’sthe difference between a container and a service? B. What’s the difference between a service and a stack?
  • 36.
  • 37.
  • 38.
  • 39.
  • 40.
  • 41.
    Images for AutomatedTesting selenium/standalone-chrome-debug selenium/standalone-firefox-debug:2.53.0 acceptance.suite.yml docker-compose.yml
  • 42.
    Images for AutomatedTesting selenium/standalone-chrome-debug selenium/standalone-firefox-debug:2.53.0 acceptance.suite.yml docker-compose.yml
  • 43.
    SIDEBAR:Legacy images, containers,volumes > docker image prune > docker container prune > docker (whatever) prune
  • 44.
    SIDEBAR:Legacy images, containers,volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
  • 45.
    SIDEBAR:Legacy images, containers,volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
  • 46.
    SIDEBAR:Legacy images, containers,volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
  • 47.
    SIDEBAR:Legacy images, containers,volumes > docker image prune > docker container prune > docker (whatever) prune > docker system prune
  • 48.
    version: “3.7” services: nginx: image: nginx networks: -web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
  • 49.
    php: image: php:7.0-fpm networks: - web depends_on: -db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt version: “3.7” services: nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd PHP 7.0 FPM NGINX MySQL
  • 50.
    php: image: php:7.0-fpm networks: - web depends_on: -db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] PHP 7.0 FPM NGINX MySQL
  • 51.
    php: image: php:7.0-fpm networks: - web depends_on: -db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt nginx: image: nginx networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] PHP 7.0 FPM NGINX MySQL
  • 52.
    SIDEBAR:LABELS — usethem everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
  • 53.
    SIDEBAR:LABELS — usethem everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
  • 54.
    SIDEBAR:LABELS — usethem everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
  • 55.
    SIDEBAR:LABELS — usethem everywhere! 🤔 ? ? ? ? The -f toggle -f name=vm_php -f label=com.envisage.desc=php
  • 56.
    version: “3.7” services: nginx: image: nginx networks: -web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
  • 57.
    Volume Example forphp php: volumes: - ./public_html:/var/ www/html Local path relative to the file Path location within the container
  • 58.
    Using named storagevolumes Volumes: pub_html: external: true … php: volumes: - pub_html:/var/ www/html Volume name Path location within the container > docker volume create pub_html —opt type=none —opt o=bind —opt device=/Volumes/E/site/ —label “com.envisage.desc=Site”
  • 59.
    Using named storagevolumes > docker volume create pub_html —opt type=none —opt o=bind —opt device=/Volumes/E/site/ —label “com.envisage.desc=Site”
  • 60.
    ⚠ Common “Gotcha” *BEWARE WINDOWS PATHS * C:DockerDriveSite /C/DockerDrives/Site /host_mnt/c/DockerDrives/Site //c/DockerDrives/Site Windows LCOW Volume Path
  • 62.
  • 63.
    POPQUIZ! A. Whatis the command to initialize a swarm?
  • 64.
    POPQUIZ! A. Whatis the command to initialize a swarm? B. What is the command to deploy a docker stack?
  • 65.
    > docker stackdeploy -c docker-compose.yml cascadia
  • 66.
    > docker stackdeploy -c docker-compose.yml cascadia
  • 67.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ?
  • 68.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
  • 69.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
  • 70.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
  • 71.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls
  • 72.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls > docker stack ps cascadia
  • 73.
    > docker stackdeploy -c docker-compose.yml cascadia 🤔 ? ? ? ? > docker service ls > docker stack ps cascadia
  • 74.
    > docker servicelogs cascadia_db
  • 75.
    > docker servicelogs cascadia_db
  • 76.
    > docker servicelogs cascadia_db
  • 77.
    > docker servicelogs cascadia_db
  • 80.
    Want to seeit in action? > docker service logs cascadia_nginx -f
  • 81.
    Want to seeit in action? > docker service logs cascadia_nginx -f
  • 82.
    Want to seeit in action? > docker service logs cascadia_nginx -f
  • 83.
    Want to seeit in action? > docker service logs cascadia_nginx -f
  • 84.
    Want to seeit in action? > docker service logs cascadia_nginx -f
  • 85.
  • 86.
    ⚠ Common “Gotcha” localhost:3306db:3306 upstream fastcgi { server 127.0.0.1:9000 } upstream fastcgi { server php:9000 }
  • 87.
    Ok, great! But… ¯_(ツ)_/¯ My production server has lots of configurations that have been customized… php/conf.d/* my.cnf nginx.conf nginx/conf.d/*
  • 88.
    version: “3.7” services: nginx: image: nginx networks: -web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
  • 89.
    version: “3.7” services: nginx: image: nginx networks: -web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.d volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.de command: [‘bin/sh’, ‘-c’, “sleep networks: web: configs: mysite: file: ./mysite.conf secrets: PHP 7.0 FPM NGINX MySQL
  • 90.
  • 91.
    Config: mysite > dockerconfig inspect cascadia_mysite
  • 92.
    version: “3.4” services: nginx: image: nginx networks: -web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “Nginx Service” volumes: - ./public_html:/var/ www/html configs: - source: mysite target: /etc/nginx/conf.d/mysite.conf ports: - “80:80” - “443:443” depends_on: - php - db labels: com.envisageinternational.desc: “Nginx Container” command: [‘sh’,'-c',"exec nginx -g 'daemon off;’”] db: image: mysql ports: - “3306:3306” networks: - web secrets: - db_pwd deploy: replicas: 1 restart_policy: condition: on-failure placement: constraints: [ node.role == manager ] environment: - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_pwd php: image: php:7.0-fpm networks: - web depends_on: - db deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-FPM Service” ports: - “9000:9000” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-FPM Container” php-cli: image: php:7.0-cli networks: - web deploy: replicas: 1 restart_policy: condition: on-failure labels: com.envisageinternational.desc: “PHP-CLI Service” volumes: - ./public_html:/var/ www/html labels: com.envisageinternational.desc: “PHP-CLI Container” command: [‘bin/sh’, ‘-c’, “sleep infinity”] networks: web: configs: mysite: file: ./mysite.conf secrets: db_pwd: file: ./root_db_password.txt PHP 7.0 FPM NGINX MySQL
  • 93.
  • 94.
    Secret: db_pwd > dockersecret inspect cascadia_db_pwd
  • 95.
    ⚠ Common “Gotcha” >docker config ls
  • 96.
    ⚠ Common “Gotcha” >docker config ls
  • 97.
    ⚠ Common “Gotcha” >docker config create mysite.2 ./mysite.conf > docker config ls
  • 98.
    ⚠ Common “Gotcha” >docker config create mysite.2 ./mysite.conf > docker config ls
  • 99.
    ⚠ Common “Gotcha” >docker config create mysite.2 ./mysite.conf > docker config ls
  • 100.
    ⚠ Common “Gotcha” >docker config create mysite.2 ./mysite.conf > docker config ls
  • 101.
    ⚠ Common “Gotcha” >docker config create mysite.2 ./mysite.conf > docker config ls > docker service update --config-rm cascadia_mysite --config-add source=mysite.2,target=/etc/nginx/conf.d/default.conf cascadia_nginx
  • 102.
    ⚠ Common “Gotcha” >docker config create mysite.2 ./mysite.conf > docker config ls > docker service update --config-rm cascadia_mysite --config-add source=mysite.2,target=/etc/nginx/conf.d/default.conf cascadia_nginx
  • 104.
    > docker servicerollback cascadia_nginx
  • 105.
    > docker servicerollback cascadia_nginx
  • 106.
    Done with theproject for now? > docker stack rm cascadia
  • 107.
    Done with theproject for now? > docker stack rm cascadia
  • 108.
    Done with theproject for now? > docker stack rm cascadia
  • 109.
    Done with theproject for now? > docker stack rm cascadia
  • 110.
  • 111.
    POPQUIZ! A. Howdo you check the replication status of services?
  • 112.
    POPQUIZ! A. Howdo you check the replication status of services? B. How do you check for error messages on the stack?
  • 113.
    POPQUIZ! A. Howdo you check the replication status of services? B. How do you check for error messages on the stack? BONUS POINT
  • 114.
    POPQUIZ! A. Howdo you check the replication status of services? B. How do you check for error messages on the stack? BONUS POINT How do you avoid truncating the error message?
  • 115.
    POPQUIZ! A. Howdo you check the replication status of services? B. How do you check for error messages on the stack? > docker stack ps vm --no-trunc BONUS POINT How do you avoid truncating the error message?
  • 116.
    Same project …multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
  • 117.
    Same project …multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
  • 118.
    Same project …multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
  • 119.
    Same project …multiple production targets? docker-compose.yml docker-compose-clientA.yml docker-compose-clientB.yml
  • 120.
  • 121.
    POPQUIZ! A. Howdo you filter a list of docker objects (services, containers, images, etc)
  • 122.
    SIDEBAR:The $( )magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this)
  • 123.
    SIDEBAR:The $( )magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l
  • 124.
    SIDEBAR:The $( )magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l
  • 125.
    SIDEBAR:The $( )magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l > docker container exec -it $(docker ps -lq -f name=cascadia_nginx) bash
  • 126.
    SIDEBAR:The $( )magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l > docker container exec -it $(docker ps -lq -f name=cascadia_nginx) bash
  • 127.
    SIDEBAR:The $( )magic with -q -l -f -q Quiet (ID only) -l Last Updated Only (1 result) -f Filter (you remember this) > docker container ls -q -l > docker container exec -it $(docker ps -lq -f name=cascadia_nginx) bash
  • 128.