This adds a guide with recommendations on how to setup
Managers and keep the Swarm cluster healthy.
Signed-off-by: Alexandre Beslic <alexandre.beslic@gmail.com>
This changes the default behavior so that rolling updates will not
proceed once an updated task fails to start, or stops running during the
update. Users can use docker service inspect --pretty servicename to see
the update status, and if it pauses due to a failure, it will explain
that the update is paused, and show the task ID that caused it to pause.
It also shows the time since the update started.
A new --update-on-failure=(pause|continue) flag selects the
behavior. Pause means the update stops once a task fails, continue means
the old behavior of continuing the update anyway.
In the future this will be extended with additional behaviors like
automatic rollback, and flags controlling parameters like how many tasks
need to fail for the update to stop proceeding. This is a minimal
solution for 1.12.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Truncated dir name can't give any useful information, print whole dir
name will.
Bad debug log is like this:
```
DEBU[2449] aufs error unmounting /var/lib/doc: no such file or directory
```
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
There's existing code to generate these
kind of errors, so make the errors added
in commit cc493a52a4
less DRY.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Commit cc493a52a4 added
a constraint to network connect/disconnect operations
on "Swarm scoped" networks.
This adds those errors to the API documentation. Also
changes the error to lowercase for consistency.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
These docs have AuthzPlugin with a lower case 'z'. What the plugin
api is actually looking for is AuthZPlugin with an upper case 'Z'.
See 46e3a249a1/pkg/authorization/api.go (L5-L8)
Signed-off-by: Everett Toews <everett.toews@rackspace.com>
Swarm handles service updates quite differently and also it doesnt
support worker driver network operations. Hence prevent containers from
connecting to swarm scoped networks
Signed-off-by: Madhu Venugopal <madhu@docker.com>
Hostnames are not supported for now because libnetwork can't use them
for overlay networking yet.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
There are currently problems with "swarm init" and "swarm join" when an
explicit --listen-addr flag is not provided. swarmkit defaults to
finding the IP address associated with the default route, and in cloud
setups this is often the wrong choice.
Introduce a notion of "advertised address", with the client flag
--advertise-addr, and the daemon flag --swarm-default-advertise-addr to
provide a default. The default listening address is now 0.0.0.0, but a
valid advertised address must be detected or specified.
If no explicit advertised address is specified, error out if there is
more than one usable candidate IP address on the system. This requires a
user to explicitly choose instead of letting swarmkit make the wrong
choice. For the purposes of this autodetection, we ignore certain
interfaces that are unlikely to be relevant (currently docker*).
The user is also required to choose a listen address on swarm init if
they specify an explicit advertise address that is a hostname or an IP
address that's not local to the system. This is a requirement for
overlay networking.
Also support specifying interface names to --listen-addr,
--advertise-addr, and the daemon flag --swarm-default-advertise-addr.
This will fail if the interface has multiple IP addresses (unless it has
a single IPv4 address and a single IPv6 address - then we resolve the
tie in favor of IPv4).
This change also exposes the node's externally-reachable address in
docker info, as requested by #24017.
Make corresponding API and CLI docs changes.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
