max_replicas_per_node
如果服务是replicated模式(默认模式), 这个属性可以在任意时间用来限制节点上面容器的副本数量。
当请求的任务数超过运行的节点数量时,会产生异常报错:no suitable node (max replicas per node limit exceed)。
version: "3.9"
services:
worker:
image: dockersamples/examplevotingapp_worker
networks:
- frontend
- backend
deploy:
mode: replicated
replicas: 6
placement:
max_replicas_per_node: 1
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