Client works for RPC; will honor CONSUL_RPC_ADDR. HTTP works via consul/api;
honors CONSUL_HTTP_ADDR.
The format of a Unix socket in configuration data is:
"unix://[/path/to/socket];[username or uid];[gid];[mode]"
Obviously, the user must have appropriate permissions to create the socket
file in the given path and assign the requested uid/gid. Also note that Go does
not support gid lookups from group name, so gid must be numeric. See
https://codereview.appspot.com/101310044
When connecting from the client, the format is just the first part of the
above line:
"unix://[/path/to/socket]"
This code is copyright 2014 Akamai Technologies, Inc. <opensource@akamai.com>
This change consolidates loading services and checks from both config
and persisted state into methods on the agent. As part of this, we
introduce optional persistence when calling RemoveCheck/RemoveService.
Fixes a bug where config reloads would kill persisted services/checks.
Also fixes an edge case:
1. A service or check is registered via the HTTP API
2. A new service or check definition with the same ID is added to config
3. Config is reloaded
The desired behavior (which this implements) is:
1. All services and checks deregistered in memory
2. All services and checks in config are registered first
3. All persisted checks are restored using the same logic as the agent
start sequence, which prioritizes config over persisted, and removes
any persistence files if new config counterparts are present.
This allows for us to automatically bootstrap a cluster of nodes after
'n' number of server nodes join. All servers must have the same 'n' set, or
they will fail to join the cluster; all servers will not join the peer set
until they hit 'n' server nodes.
If the raft commit index is not empty, '-expect=n' does nothing because it
thinks you've already bootstrapped.
Signed-off-by: Robert Xu <robxu9@gmail.com>
