https://github.com/jalbertomr/DockerSampleApp/commit/cededc9266db3f99a7b7eb2229d6e8a4f490fa7e
Ahora finalmente haremos el enlace de la aplicación web con el redis, habilitando el contador. Esto se hará configurando un archivo docker-compose.yml que describe los servicios y características de los mismos que se ejecutarán en el stack. los containers dentro del stack pueden comunicarse los unos a los otros al estar en una misma red. así tendremos en el mismo stack el redis y web. cabe notar que le debemos especificar el directorio de trabajo al redis, o sea un volumen.
- Levantamos las tres máquinas virtuales.
- Verificamos el estado del swarm en las máquinas virtuales con comandos comunes.
- integramos la linea de comandos de la vm master a la máquina host, para no estar escribiendo docker-machine ssh vm "comandos..."
docker-composev3.yml
version: "3"services: web: #remplazar username/repo:tag con el nombre y imagen #image: username/repo:tag image: jalbertomr/lab1:miapp80 deploy: replicas: 5 resources: limits: cpus: "0.1" memory: 50M restart_policy: condition: on-failure ports: - "80:80" networks: - webnet visualizer: image: dockersamples/visualizer:stable ports: - "8080:8080" volumes: - "/var/run/docker.sock:/var/run/docker.sock" deploy: placement: constraints: [node.role == manager] networks: - webnet portainer: image: portainer/portainer ports: - "9000:9000" volumes: - "/var/run/docker.sock:/var/run/docker.sock" deploy: placement: constraints: [node.role == manager] networks: - webnet redis: image: redis ports: - "6379:6379" volumes: - "/home/docker/data:/data" deploy: placement: constraints: [node.role == manager] command: redis-server --appendonly yes networks: - webnet networks: webnet:
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION kdaljefl1ech729w83jrdmqr9 * bext-VPCF13WFX Ready Active Leader 18.09.6
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker-machine ssh sw-master "docker node ls" ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION pdlp62hc1wqzo5wuubp5ailmx * sw-master Ready Active Leader 18.09.7 qfc9sx1tfe3wms1oera75f80b sw-worker-1 Ready Active 18.09.7 v28filrne0x5fua7r7rxh6zew sw-worker-2 Ready Active 18.09.7
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ eval $(docker-machine env sw-master) bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION pdlp62hc1wqzo5wuubp5ailmx * sw-master Ready Active Leader 18.09.7 qfc9sx1tfe3wms1oera75f80b sw-worker-1 Ready Active 18.09.7 v28filrne0x5fua7r7rxh6zew sw-worker-2 Ready Active 18.09.7 bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES aa470dcbd277 portainer/portainer:latest "/portainer" 2 minutes ago Up 2 minutes 9000/tcp miapp80lab_portainer.1.xm88pptnl8195i1mnxbbza9hn a66ad99c3c31 dockersamples/visualizer:stable "npm start" 12 minutes ago Up 12 minutes 8080/tcp miapp80lab_visualizer.1.yymvzcddts6200njgk2p0wisa 605543af5211 jalbertomr/lab1:miapp80 "python app.py" 12 minutes ago Up 12 minutes 80/tcp miapp80lab_web.3.x7o48c0bzadt7pldzip6l574c 7e747892e369 jalbertomr/lab1:miapp80 "python app.py" 12 minutes ago Up 12 minutes 80/tcp miapp80lab_web.5.fni0oi576q33y4od1mh0ou8mp bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker services ls docker: 'services' is not a docker command. See 'docker --help' bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker service ls ID NAME MODE REPLICAS IMAGE PORTS olbmomly7iae miapp80lab_portainer replicated 1/1 portainer/portainer:latest *:9000->9000/tcp 362njjjcdbpb miapp80lab_redis replicated 0/1 redis:latest *:6379->6379/tcp 817s3pre274t miapp80lab_visualizer replicated 1/1 dockersamples/visualizer:stable *:8080->8080/tcp cxlzjtcdhulm miapp80lab_web replicated 5/5 jalbertomr/lab1:miapp80 *:80->80/tcp
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ eval $(docker-machine env sw-master) bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION pdlp62hc1wqzo5wuubp5ailmx * sw-master Ready Active Leader 18.09.7 qfc9sx1tfe3wms1oera75f80b sw-worker-1 Ready Active 18.09.7 v28filrne0x5fua7r7rxh6zew sw-worker-2 Ready Active 18.09.7 bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES aa470dcbd277 portainer/portainer:latest "/portainer" 2 minutes ago Up 2 minutes 9000/tcp miapp80lab_portainer.1.xm88pptnl8195i1mnxbbza9hn a66ad99c3c31 dockersamples/visualizer:stable "npm start" 12 minutes ago Up 12 minutes 8080/tcp miapp80lab_visualizer.1.yymvzcddts6200njgk2p0wisa 605543af5211 jalbertomr/lab1:miapp80 "python app.py" 12 minutes ago Up 12 minutes 80/tcp miapp80lab_web.3.x7o48c0bzadt7pldzip6l574c 7e747892e369 jalbertomr/lab1:miapp80 "python app.py" 12 minutes ago Up 12 minutes 80/tcp miapp80lab_web.5.fni0oi576q33y4od1mh0ou8mp
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker service ls ID NAME MODE REPLICAS IMAGE PORTS olbmomly7iae miapp80lab_portainer replicated 1/1 portainer/portainer:latest *:9000->9000/tcp 362njjjcdbpb miapp80lab_redis replicated 0/1 redis:latest *:6379->6379/tcp 817s3pre274t miapp80lab_visualizer replicated 1/1 dockersamples/visualizer:stable *:8080->8080/tcp cxlzjtcdhulm miapp80lab_web replicated 5/5 jalbertomr/lab1:miapp80 *:80->80/tcp
El redis no esta disponible, le agregaremos a la vm donde se ejecuta el subdirectorio para su volumen.
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker-machine ssh sw-master "mkdir ./data"
Redeployamos el stack
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker stack deploy -c docker-composev3.yml miapp80lab Updating service miapp80lab_visualizer (id: 817s3pre274thsvx0xumglmrt) Updating service miapp80lab_portainer (id: olbmomly7iaejaaxmtg33ejg1) Updating service miapp80lab_redis (id: 362njjjcdbpbnpw0gzn3dnpis) Updating service miapp80lab_web (id: cxlzjtcdhulm1eftjvg6etul4)
Verificamos la ejecución
bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker node ls ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION pdlp62hc1wqzo5wuubp5ailmx * sw-master Ready Active Leader 18.09.7 qfc9sx1tfe3wms1oera75f80b sw-worker-1 Ready Active 18.09.7 v28filrne0x5fua7r7rxh6zew sw-worker-2 Ready Active 18.09.7 bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker service ls ID NAME MODE REPLICAS IMAGE PORTS olbmomly7iae miapp80lab_portainer replicated 1/1 portainer/portainer:latest *:9000->9000/tcp 362njjjcdbpb miapp80lab_redis replicated 1/1 redis:latest *:6379->6379/tcp 817s3pre274t miapp80lab_visualizer replicated 1/1 dockersamples/visualizer:stable *:8080->8080/tcp cxlzjtcdhulm miapp80lab_web replicated 5/5 jalbertomr/lab1:miapp80 *:80->80/tcp
Ya vemos que esta ejecutandose el redis, lo verificamos en la página web si el contador funciona.
eot
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