我有2个docker镜像，分别是modbus服务器和一个客户端，该客户端与docker run --network host server手动运行，并且与该客户端相同，并且运行良好。但是现在我需要将它们添加到网络桥接的docker-compose文件中，我的操作如下：
autoserver:
image: 19mikel95/pymodmikel:autoserversynchub
container_name: autoserver
restart: unless-stopped
clientperf:
image: 19mikel95/pymodmikel:reloadcomp
container_name: clientperf
restart: unless-stopped
depends_on:
- autoserver
links:
- "autoserver:server"
我读到要从一个容器引用另一个容器（客户端到服务器），我必须在dockercompose YML（自动服务器）中使用服务名称，这就是我所做的。在客户端执行的python文件（即pymodbus中的performance.py）中，我将“ localhost”更改为：
host = 'autoserver'
client = ModbusTcpClient(host, port=5020)
但是我收到此错误：
[ERROR / MainProcess]无法成功运行测试Traceback（大多数 最近一次调用）：文件“ performance.py”，第72行，在 single_client_test client.read_holding_registers（10，1，unit = 1） 文件“ /usr/lib/python3/dist-packages/pymodbus/client/common.py”，行 114，在read_holding_registers中 返回self.execute（request）文件“ /usr/lib/python3/dist-packages/pymodbus/client/sync.py”，第107行，在 执行 引发ConnectionException（“无法连接[％s]”％（self。 str （）））pymodbus.exceptions.ConnectionException：Modbus 错误：[连接]失败 connect [ModbusTcpClient（autoserver：5020）]
根据要求，我完整的docker-compose YML是这样的：
version: '2.1'
networks:
monitor-net:
driver: bridge
volumes:
prometheus_data: {}
grafana_data: {}
services:
prometheus:
image: prom/prometheus:latest
container_name: prometheus
volumes:
- ./prometheus:/etc/prometheus
- prometheus_data:/prometheus
command:
- '--config.file=/etc/prometheus/prometheus.yml'
- '--storage.tsdb.path=/prometheus'
- '--web.console.libraries=/etc/prometheus/console_libraries'
- '--web.console.templates=/etc/prometheus/consoles'
- '--storage.tsdb.retention.time=200h'
- '--web.enable-lifecycle'
restart: unless-stopped
expose:
- 9090
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
alertmanager:
image: prom/alertmanager:latest
container_name: alertmanager
volumes:
- ./alertmanager:/etc/alertmanager
command:
- '--config.file=/etc/alertmanager/config.yml'
- '--storage.path=/alertmanager'
restart: unless-stopped
expose:
- 9093
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
nodeexporter:
image: prom/node-exporter:latest
container_name: nodeexporter
volumes:
- /proc:/host/proc:ro
- /sys:/host/sys:ro
- c:\:/rootfs:ro
command:
- '--path.procfs=/host/proc'
- '--path.rootfs=/rootfs'
- '--path.sysfs=/host/sys'
- '--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|host|etc)($$|/)'
restart: unless-stopped
expose:
- 9100
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
cadvisor:
image: gcr.io/google-containers/cadvisor:latest
container_name: cadvisor
volumes:
- c:\:/rootfs:ro
- /var/run:/var/run:rw
- /sys:/sys:ro
- /var/lib/docker:/var/lib/docker:ro
#- /cgroup:/cgroup:ro #doesn't work on MacOS only for Linux
restart: unless-stopped
expose:
- 8080
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
grafana:
image: grafana/grafana:latest
container_name: grafana
volumes:
- grafana_data:/var/lib/grafana
- ./grafana/provisioning:/etc/grafana/provisioning
environment:
- GF_SECURITY_ADMIN_USER=${ADMIN_USER:-admin}
- GF_SECURITY_ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
- GF_USERS_ALLOW_SIGN_UP=false
restart: unless-stopped
expose:
- 3000
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
pushgateway:
image: prom/pushgateway:latest
container_name: pushgateway
restart: unless-stopped
expose:
- 9091
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
caddy:
image: stefanprodan/caddy
container_name: caddy
ports:
- "3000:3000"
- "9090:9090"
- "9093:9093"
- "9091:9091"
volumes:
- ./caddy:/etc/caddy
environment:
- ADMIN_USER=${ADMIN_USER:-admin}
- ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
restart: unless-stopped
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
autoserver:
image: 19mikel95/pymodmikel:autoserversynchub
container_name: autoserver
ports:
- "5020:5020"
restart: unless-stopped
networks:
- monitor-net
clientperf:
image: 19mikel95/pymodmikel:reloadcomp
container_name: clientperf
restart: unless-stopped
networks:
- monitor-net
depends_on:
- autoserver
links:
- "autoserver:server"
答案 0 :(得分：1)
问题出在StartTcpServer(context, identity=identity, address=("localhost", 5020))图像的sincserver.py文件的autoserver中。 localhost允许TcpServer仅接受来自localhost的连接。应该将其替换为0.0.0.0，以允许对此端口的任何外部请求。
以下Docker Compose显示了它（sed -i 's|localhost|0.0.0.0|g' sincserver.py替换了主机名）：
version: '2.1'
services:
autoserver:
image: 19mikel95/pymodmikel:autoserversynchub
command: sh -c "
sed -i 's|localhost|0.0.0.0|g' sincserver.py;
python3 sincserver.py daemon off
"
ports:
- "5020:5020"
restart: unless-stopped
clientperf:
image: 19mikel95/pymodmikel:reloadcomp
restart: unless-stopped
depends_on:
- autoserver
运行：
docker-compose up -d
docker-compose logs -f clientperf
您将看到类似的日志
clientperf_1 | [DEBUG/MainProcess] 574 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.7410697999875993 seconds
clientperf_1 | [DEBUG/MainProcess] 692 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.4434449000109453 seconds
clientperf_1 | [DEBUG/MainProcess] 708 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.4116760999895632 seconds
clientperf_1 | [DEBUG/MainProcess] 890 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.1230684999900404 seconds
clientperf_1 | [DEBUG/MainProcess] 803 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.2450218999874778 seconds
clientperf_1 | [DEBUG/MainProcess] 753 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.3274328999978025 seconds
clientperf_1 | [DEBUG/MainProcess] 609 requests/second
clientperf_1 | [DEBUG/MainProcess] time taken to complete 1000 cycle by 10 workers is 1.6399398999928962 seconds
答案 1 :(得分：0)
您可以尝试使用诸如AUTO_SERVER_HOST之类的env变量，并在您的代码中调用它
version: '2.1'
networks:
monitor-net:
driver: bridge
volumes:
prometheus_data: {}
grafana_data: {}
services:
prometheus:
image: prom/prometheus:latest
container_name: prometheus
volumes:
- ./prometheus:/etc/prometheus
- prometheus_data:/prometheus
command:
- '--config.file=/etc/prometheus/prometheus.yml'
- '--storage.tsdb.path=/prometheus'
- '--web.console.libraries=/etc/prometheus/console_libraries'
- '--web.console.templates=/etc/prometheus/consoles'
- '--storage.tsdb.retention.time=200h'
- '--web.enable-lifecycle'
restart: unless-stopped
expose:
- 9090
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
alertmanager:
image: prom/alertmanager:latest
container_name: alertmanager
volumes:
- ./alertmanager:/etc/alertmanager
command:
- '--config.file=/etc/alertmanager/config.yml'
- '--storage.path=/alertmanager'
restart: unless-stopped
expose:
- 9093
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
nodeexporter:
image: prom/node-exporter:latest
container_name: nodeexporter
volumes:
- /proc:/host/proc:ro
- /sys:/host/sys:ro
- c:\:/rootfs:ro
command:
- '--path.procfs=/host/proc'
- '--path.rootfs=/rootfs'
- '--path.sysfs=/host/sys'
- '--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|host|etc)($$|/)'
restart: unless-stopped
expose:
- 9100
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
cadvisor:
image: gcr.io/google-containers/cadvisor:latest
container_name: cadvisor
volumes:
- c:\:/rootfs:ro
- /var/run:/var/run:rw
- /sys:/sys:ro
- /var/lib/docker:/var/lib/docker:ro
#- /cgroup:/cgroup:ro #doesn't work on MacOS only for Linux
restart: unless-stopped
expose:
- 8080
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
grafana:
image: grafana/grafana:latest
container_name: grafana
volumes:
- grafana_data:/var/lib/grafana
- ./grafana/provisioning:/etc/grafana/provisioning
environment:
- GF_SECURITY_ADMIN_USER=${ADMIN_USER:-admin}
- GF_SECURITY_ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
- GF_USERS_ALLOW_SIGN_UP=false
restart: unless-stopped
expose:
- 3000
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
pushgateway:
image: prom/pushgateway:latest
container_name: pushgateway
restart: unless-stopped
expose:
- 9091
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
caddy:
image: stefanprodan/caddy
container_name: caddy
ports:
- "3000:3000"
- "9090:9090"
- "9093:9093"
- "9091:9091"
volumes:
- ./caddy:/etc/caddy
environment:
- ADMIN_USER=${ADMIN_USER:-admin}
- ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
restart: unless-stopped
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
autoserver:
image: 19mikel95/pymodmikel:autoserversynchub
container_name: autoserver
ports:
- "5020:5020"
restart: unless-stopped
networks:
- monitor-net
clientperf:
image: 19mikel95/pymodmikel:reloadcomp
container_name: clientperf
restart: unless-stopped
networks:
- monitor-net
depends_on:
- autoserver
environment:
- AUTO_SERVER_HOST=autoserver
如下调用env变量
host = os.environ['AUTO_SERVER_HOST']
client = ModbusTcpClient(host, port=5020)