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Allow swarm init with --availability=drain

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This fix adds a new flag `--availability` to `swarm join`.

Related documentation has been updated.

An integration test has been added.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang 2016-12-21 18:13:31 -08:00 committed by Tibor Vass
parent f4d26add25
commit 4a16aa2ece
1 changed files with 11 additions and 0 deletions
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docs/reference/commandline/swarm_init.md
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@ -23,6 +23,7 @@ Initialize a swarm
Options: Options:
--advertise-addr string Advertised address (format: <ip|interface>[:port]) --advertise-addr string Advertised address (format: <ip|interface>[:port])
--autolock Enable manager autolocking (requiring an unlock key to start a stopped manager) --autolock Enable manager autolocking (requiring an unlock key to start a stopped manager)
--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) --cert-expiry duration Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s)
--dispatcher-heartbeat duration Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s) --dispatcher-heartbeat duration Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s)
--external-ca external-ca Specifications of one or more certificate signing endpoints --external-ca external-ca Specifications of one or more certificate signing endpoints
@ -133,6 +134,16 @@ Snapshots compact the Raft log and allow for more efficient transfer of the
state to new managers. However, there is a performance cost to taking snapshots state to new managers. However, there is a performance cost to taking snapshots
frequently. frequently.
### `--availability`
This flag specifies the availability of the node at the time the node joins a master.
Possible availability values are `active`, `pause`, or `drain`.
This flag is useful in certain situations. For example, a cluster may want to have
dedicated manager nodes that are not served as worker nodes. This could be achieved
by passing `--availability=drain` to `docker swarm init`.
## Related information ## Related information
* [swarm join](swarm_join.md) * [swarm join](swarm_join.md)