* refactor DNS server to be ready for multiple bind addresses
* drop tcpKeepAliveListener since it is default for the HTTP servers
* add startup timeout watcher for HTTP servers identical to DNS server
Move the HTTP and DNS endpoints into the agent and control
their lifespan via the agent.
This removes the requirement to manage HTTP and DNS servers
indpendent of the agent since the agent is mostly useless
without an endpoint and the endpoints without the agent.
This makes the upgrade path a bit nicer, since people will likely have
older configurations. This prints out a warning instead of just failing
if the old rpc addr or ports definition is in the config.
This adds two goroutines to perform autopilot tasks on the leader - one
to monitor the health of servers and another to periodically clean up
dead servers with a limit on removal count. Also adds a new http endpoint,
`/v1/operator/autopilot/health`, for querying this information through an
operator RPC endpoint.
This commit adds several command-line and config options that facilitate
host discovery through Google Compute Engine (GCE), much like the
recently added EC2 host discovery options. This should assist with
bootstrapping and joining servers within GCE when non-static addresses
are used, such as when using managed instance groups.
Documentation has also been added. It should be noted that if running
from within a GCE instance, the only option that should be necessary is
-retry-join-gce-tag-value.
Default MaxStale to 10 years and add a counter at `consul.dns.stale_queries` that tracks when an agent serves a query that's stale by at least 5 seconds. Previously, MaxStale defaulted to 5 seconds and DNS would become unavailable after a short period of time with no leader. This new default allows DNS requests to still be served in the event of a long outage.
Fixes#2460.
* * adding cli config and config file support for specifying the serf wan and lan bind addresses
* updating documentation for serf wan and lan options
Fixes#2007
* Cleans up some small things from #2380.
* Uses the bind default for the agent test for Serf WAN and LAN.
Frank Schroeder