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Data Path Port configuration support

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This PR chnages allow user to configure data path
port number. By default we use 4789 port number. But this commit
will allow user to configure port number during swarm init.
Data path port can't be modified after swarm init.

Signed-off-by: selansen <elango.siva@docker.com>
This commit is contained in:
selansen
2018-11-26 16:04:39 -05:00
parent 052133a4f5
commit e3e976a82a
6 changed files with 38 additions and 2 deletions
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27
docs/reference/commandline/swarm_init.md
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@ -26,6 +26,7 @@ Options:
--availability string Availability of the node ("active"|"pause"|"drain") (default "active")
--cert-expiry duration Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s)
--data-path-addr string Address or interface to use for data path traffic (format: <ip|interface>)
--data-path-port uint32 Port number to use for data path traffic (1024 - 49151). If no value is set or is set to 0, the default port (4789) is used.
--default-addr-pool IPnet List of default address pool (format: <cidr>)
--default-addr-pool-mask-length Subnet mask length for default address pool (default 24)
--dispatcher-heartbeat duration Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s)
@ -130,6 +131,32 @@ management traffic of the cluster.
If unspecified, Docker will use the same IP address or interface that is used for the
advertise address.
### `--data-path-port`
This flag allows you to configure the UDP port number to use for data path
traffic. The provided port number must be within the 1024 - 49151 range. If
this flag is not set or is set to 0, the default port number 4789 is used.
The data path port can only be configured when initializing the swarm, and
applies to all nodes that join the swarm.
The following example initializes a new Swarm, and configures the data path
port to UDP port 7777;
```bash
docker swarm init --data-path-port=7777
```
After the swarm is initialized, use the `docker info` command to verify that
the port is configured:
```bash
docker info
...
ClusterID: 9vs5ygs0gguyyec4iqf2314c0
Managers: 1
Nodes: 1
Data Path Port: 7777
...
```
### `--default-addr-pool`
This flag specifies default subnet pools for global scope networks.
Format example is `--default-addr-pool 30.30.0.0/16 --default-addr-pool 40.40.0.0/16`