docker swarm 端口开放
The network ports required for a Docker Swarm to function properly are:TCP port 2376 for secure Docker client communication. This port is required for Docker Machine to work. Docker Machine is used ..
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The network ports required for a Docker Swarm to function properly are:
- TCP port 2376 for secure Docker client communication. This port is required for Docker Machine to work. Docker Machine is used to orchestrate Docker hosts.
- TCP port 2377. This port is used for communication between the nodes of a Docker Swarm or cluster. It only needs to be opened on manager nodes.
- TCP and UDP port 7946 for communication among nodes (container network discovery).
- UDP port 4789 for overlay network traffic (container ingress networking).
2376 用于docker machine 在实体机,一般不需要。
# docker machine
firewall-cmd --add-port=2376/tcp --permanent
# manager
firewall-cmd --add-port=2377/tcp --permanent
# communication among nodes (container network discovery).
firewall-cmd --add-port=7946/tcp --permanent
firewall-cmd --add-port=7946/udp --permanent
# overlay network traffic (container ingress networking).
firewall-cmd --add-port=4789/udp --permanent
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