环境
基于上一节的env/server:v0.1, env/worker:v0.1镜像, 在基于debian8.2的两台机器上测试部署docker swarm.
docker service部署
➜ ~ docker service create --replicas 1 --name server -e APP_PORT=5000 --network docker-net --publish 5000:5000 env/server:v0.1 image env/server:v0.1 could not be accessed on a registry to record its digest. Each node will access env/server:v0.1 independently, possibly leading to different nodes running different versions of the image. pzyx887jb112isgkyorarvt7t overall progress: 1 out of 1 tasks 1/1: running [==================================================>] verify: Service converged ➜ ~ ➜ ~ docker service create --replicas 2 --name worker -e APP_DOMAIN=server -e APP_PORT=5000 --network docker-net env/worker:v0.1 image env/worker:v0.1 could not be accessed on a registry to record its digest. Each node will access env/worker:v0.1 independently, possibly leading to different nodes running different versions of the image. wavv2ie7ad9je6s33q82f3skv overall progress: 2 out of 2 tasks 1/2: running [==================================================>] 2/2: running [==================================================>] verify: Service converged ➜ ~ docker service ls ID NAME MODE REPLICAS IMAGE PORTS pzyx887jb112 server replicated 1/1 env/server:v0.1 *:5000->5000/tcp wavv2ie7ad9j worker replicated 2/2 env/worker:v0.1 ➜ ~ docker service ps worker ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS hyjcg25ymfvx worker.1 env/worker:v0.1 debian-vm Running Running 42 seconds ago zpx2oq4q0dhu worker.2 env/worker:v0.1 debian Running Running 36 seconds ago
1 ➜ ~ docker ps 2 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 3 a9b1931acf12 env/worker:v0.1 "python worker.py" 2 minutes ago Up 2 minutes worker.2.zpx2oq4q0dhuqgvtkt0mm8dyt 4 994e4779c252 env/server:v0.1 "python server.py" 3 minutes ago Up 3 minutes server.1.v5mu7wa8tfswayzwjh3u1qtpk 5 ➜ ~ docker exec 994e4779c252 cat /env/server/log/server.log 6 2018-11-21 23:02:33 [INFO] Waiting for connection... 7 2018-11-21 23:03:26 [INFO] ('10.0.0.5', 37802) connected 8 2018-11-21 23:03:27 [INFO] ('10.0.0.4', 54099) connected 9 ➜ ~ docker exec a9b1931acf12 cat /env/worker/log/worker.log 10 2018-11-21 23:03:27 [INFO] [+] ('10.0.0.2', 5000) connected 11 2018-11-21 23:03:27 [INFO] [recv] hello, docker! 12 ➜ ~ docker exec a9b1931acf12 ping -c 2 server 13 PING server (10.0.0.2) 56(84) bytes of data. 14 64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.117 ms 15 64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.205 ms 16 17 --- server ping statistics --- 18 2 packets transmitted, 2 received, 0% packet loss, time 1000ms 19 rtt min/avg/max/mdev = 0.117/0.161/0.205/0.044 ms
1 root@debian-vm:~# docker ps 2 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 3 94b6e94a4f4c env/worker:v0.1 "python worker.py" About a minute ago Up 58 seconds worker.1.hyjcg25ymfvx2u6ghy3ng7g1y 4 root@debian-vm:~# docker exec 94b6e94a4f4c cat /env/worker/log/worker.log 5 2018-11-21 23:03:21 [INFO] [+] ('10.0.0.2', 5000) connected 6 2018-11-21 23:03:21 [INFO] [recv] hello, docker! 7 root@debian-vm:~# docker exec 94b6e94a4f4c ping -c 2 server 8 PING server (10.0.0.2) 56(84) bytes of data. 9 64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.058 ms 10 64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.057 ms 11 12 --- server ping statistics --- 13 2 packets transmitted, 2 received, 0% packet loss, time 1002ms 14 rtt min/avg/max/mdev = 0.057/0.057/0.058/0.007 ms 15 root@debian-vm:~#
# 从worker node上验证publish端口 root@debian-vm:/env/worker# export APP_PORT=5000 root@debian-vm:/env/worker# export APP_DOMAIN=192.168.2.118 root@debian-vm:/env/worker# python worker.py [+] ('192.168.2.118', 5000) connected [+][recv] hello, docker! ^C [-] signal(2) received, exit! root@debian-vm:/env/worker# # 从manager node上验证publish端口 ➜ worker export APP_PORT=5000 ➜ worker export APP_DOMAIN=192.168.2.118 ➜ worker python worker.py [+] ('192.168.2.118', 5000) connected [+][recv] hello, docker! ^C [-] signal(2) received, exit! ➜ worker docker exec 994e4779c252 cat /env/server/log/server.log 2018-11-21 23:02:33 [INFO] Waiting for connection... 2018-11-21 23:03:26 [INFO] ('10.0.0.5', 37802) connected 2018-11-21 23:03:27 [INFO] ('10.0.0.4', 54099) connected 2018-11-21 23:11:42 [INFO] ('10.255.0.2', 41683) connected 2018-11-21 23:11:43 [INFO] ('10.255.0.2', 41683) closed 2018-11-21 23:15:27 [INFO] ('10.255.0.2', 56739) connected 2018-11-21 23:15:28 [INFO] ('10.255.0.2', 56739) closed ➜ worker
docker stack部署
#docker-compose.yml version: "3" services: server: image: env/server:v0.1 build: context: /app/env/server dockerfile: Dockerfile labels: description: "tcp server test script" ports: - 3000:${APP_PORT-3000} - ${APP_PORT-3000}:${APP_PORT-3000} restart: always environment: - APP_PORT=${APP_PORT-3000} networks: - overlay deploy: replicas: 1 worker: image: env/worker:v0.1 build: /app/env/worker labels: description: "tcp client test script" links: - server environment: - APP_PORT=${APP_PORT-3000} - APP_DOMAIN=server networks: - overlay depends_on: - server deploy: replicas: 3 restart_policy: condition: on-failure worker_test: image: env/worker_test:v0.1 networks: - overlay deploy: replicas: 3 networks: overlay:
➜ /env echo $APP_PORT 5000 ➜ /env docker stack deploy -c docker-compose.yml env Ignoring unsupported options: build, links, restart Creating network env_overlay Creating service env_worker_test Creating service env_server Creating service env_worker ➜ /env docker service ls ID NAME MODE REPLICAS IMAGE PORTS lwl5gpaseyz5 env_server replicated 1/1 env/server:v0.1 *:3000->5000/tcp, *:5000->5000/tcp 0ywtuy79e5af env_worker replicated 3/3 env/worker:v0.1 a2malzyjs8a8 env_worker_test replicated 3/3 env/worker_test:v0.1 ➜ /env docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 6534e1ab7a0f env/worker:v0.1 "python worker.py" About a minute ago Up About a minute env_worker.2.o8oo0c2do3xi17bb2y1jyxyvt a6f05a1180fa env/worker_test:v0.1 "python worker.py" About a minute ago Up About a minute env_worker_test.2.xyriek6uv0jt5u8grfh2r2nip dd178c531cab env/worker_test:v0.1 "python worker.py" About a minute ago Up About a minute env_worker_test.3.e5akyik75zru3a3vm7t0uow42 ➜ /env docker exec 6534e1ab7a0f cat /env/worker/log/worker.log 2018-11-21 23:41:08 [INFO] [+] ('10.0.3.8', 5000) connected 2018-11-21 23:41:08 [INFO] [recv] hello, docker!
1 root@debian-vm:/# docker ps 2 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 3 54816f125b5d env/worker:v0.1 "python worker.py" 2 minutes ago Up 2 minutes env_worker.3.583qka4f0we1tr8gzfbfwd8xq 4 b148b68c60ac env/worker:v0.1 "python worker.py" 2 minutes ago Up 2 minutes env_worker.1.pajhjlgfcfpkcvtgbl4pd9iec 5 4501dddabc12 env/server:v0.1 "python server.py" 2 minutes ago Up 2 minutes env_server.1.r8rffhrzds0p5qreiz3zskglt 6 423f9f7fe5bf env/worker_test:v0.1 "python worker.py" 2 minutes ago Up 2 minutes env_worker_test.1.yafiu0eg5bmmv47do4dwtbcdm 7 root@debian-vm:/# docker exec 4501dddabc12 cat /env/server/log/server.log 8 2018-11-21 23:40:58 [INFO] Waiting for connection... 9 2018-11-21 23:41:02 [INFO] ('10.0.3.3', 34822) connected 10 2018-11-21 23:41:02 [INFO] ('10.0.3.3', 46612) connected 11 2018-11-21 23:41:03 [INFO] ('10.0.3.2', 33741) connected 12 root@debian-vm:/#
# worker node启动客户端 ➜ worker export APP_PORT=3000 ➜ worker export APP_DOMAIN=192.168.2.118 ➜ worker python worker.py [+] ('192.168.2.118', 3000) connected [+][recv] hello, docker! ^C [-] signal(2) received, exit! ➜ worker # manager node查看日志, 验证连接成功 root@debian-vm:/# docker exec 4501dddabc12 cat /env/server/log/server.log 2018-11-21 23:40:58 [INFO] Waiting for connection... 2018-11-21 23:41:02 [INFO] ('10.0.3.3', 34822) connected 2018-11-21 23:41:02 [INFO] ('10.0.3.3', 46612) connected 2018-11-21 23:41:03 [INFO] ('10.0.3.2', 33741) connected 2018-11-21 23:46:29 [INFO] ('10.255.0.2', 37693) connected 2018-11-21 23:46:30 [INFO] ('10.255.0.2', 37693) closed root@debian-vm:/#