- Create:
vagrant up - Destroy:
vagrant destroy - Status:
vagrant status - Connect:
vagrant ssh core-01
- core-01(manager) / 172.17.8.101 / 1 cpu / 1G memory
- core-02(worker) / 172.17.8.102 / 1 cpu / 1G memory
- core-03(worker) / 172.17.8.103 / 1 cpu / 1G memory
- 1 manager & 2 workers
manager
docker swarm init --advertise-addr 172.17.8.101workers
docker swarm join \
--token xxxx \
172.17.8.101:2377manager
docker node lsoutput:
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
4ld9enwqy44akwon8pxgipwhj core-03 Ready Active
kc59j9oq87b0go6zc5didbgzg core-02 Ready Active
wzbde2rgmunh78fnr1m5u64hj * core-01 Ready Active Leader
config files
/var/lib/docker/swarm
- Simple standalone web application
- Ingress network / Route mesh
- Scale up
- HEALTHCHECK (subicura/whoami:1 - no healthcheck, subicura/whoami:2 - healthcheck)
run
# run
docker service create --name whoami \
-p 4567:4567 \
subicura/whoami:1
# test
while true; do
curl 172.17.8.101:4567
echo "\n---"
sleep 1
done
# check
docker service ls
docker service ps whoami
docker service logs -f whoami
# scale up
docker service scale whoami=5
# update image
docker service update --update-parallelism 3 --image subicura/whoami:2 whoami
docker service scale whoami=1
docker service scale whoami=5cleanup
docker service rm whoami- Run web application with redis
- Overlay network
- Replication
- DNS
- Mount option in service
network
docker network create --attachable --driver overlay backend
docker network lsoutput:
NETWORK ID NAME DRIVER SCOPE
uv96b2uo19p5 backend overlay swarm
df65301199f1 bridge bridge local
baf918b16109 docker_gwbridge bridge local
97d4f5826494 host host local
u7dt1gxv9d8g ingress overlay swarm
b19c267a6bdc none null local
redis
# run
docker service create --name redis \
--network=backend \
--mount "type=bind,source=/shared/redis,target=/data" \
redis \
redis-server --appendonly yes
# test
docker run --rm -it \
--network=backend \
alpine \
telnet redis 6379
KEYS *
SET hello world
GET hello
DEL hello
# check
docker service ls
docker service ps redis
docker service logs -f rediscounter web
# run
docker service create --name counter \
--network=backend \
--replicas 3 \
-e REDIS_HOST=redis \
-p 4568:4567 \
subicura/counter
# test
docker run --rm -it \
--network=backend \
alpine \
/bin/sh
ping counter
ping tasks.counter
apk add --update bind-tools
dig counter
dig tasks.counter
while true; do
curl 172.17.8.101:4568
echo "\n---"
sleep 1
done
# check
docker service ls
docker service ps counter
docker service logs -f countercleanup
docker service rm redis
docker service rm counter- use secret
secret
echo "this is my password!" | docker secret create my-password -secret web
# run
docker service create --name secret \
--secret my-password \
-p 4569:4567 \
-e SECRET_PATH=/run/secrets/my-password \
subicura/secret
# test
curl 172.17.8.101:4569
# check
docker service ls
docker service ps secret
docker service logs -f secretcleanup
docker service rm secret- service create constraint
- portainer app
/etc/hosts
172.17.8.101 portainer.local.dev counter.local.dev
network
docker network create --attachable --driver overlay frontendtraefic
#run
docker service create --name traefik \
--constraint 'node.role == manager' \
-p 80:80 \
-p 8080:8080 \
--mount type=bind,source=/var/run/docker.sock,target=/var/run/docker.sock \
--network frontend \
traefik \
--docker \
--docker.swarmmode \
--docker.domain=local.dev \
--docker.watch \
--web
# test
open http://172.17.8.101:8080/
# check
docker service ls
docker service ps traefik
docker service logs -f traefikportainer
# run
docker service create --name portainer \
--network=frontend \
--label traefik.port=9000 \
--constraint 'node.role == manager' \
--mount "type=bind,source=/var/run/docker.sock,target=/var/run/docker.sock" \
portainer/portainer
# check
docker service ls
docker service ps portainer
docker service logs -f portainercounter
Replicate bug not yet resolved! Do not use in production.
- Add network=frontend
- Add label traefik.port=4567
- Remove -p
docker service rm counter
docker service create --name counter \
--network=frontend \
--network=backend \
--replicas 3 \
--label traefik.port=4567 \
-e REDIS_HOST=redis \
subicura/countercleanup
# remove
docker service rm traefik
# remove
docker service rm portainer- docker stack
docker stack deploy --compose-file ./docker-compose.yml prometheus-stack
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