This implements parts of RFC 7871 where Consul is acting as an authoritative name server (or forwarding resolver when recursors are configured)
If ECS opt is present in the request we will mirror it back and return a response with a scope of 0 (global) or with the same prefix length as the request (indicating its valid specifically for that subnet).
We only mirror the prefix-length (non-global) for prepared queries as those could potentially use nearness checks that could be affected by the subnet. In the future we could get more sophisticated with determining the scope bits and allow for better caching of prepared queries that don’t rely on nearness checks.
The other thing this does not do is implement the part of the ECS RFC related to originating ECS headers when acting as a intermediate DNS server (forwarding resolver). That would take a quite a bit more effort and in general provide very little value. Consul will currently forward the ECS headers between recursors and the clients transparently, we just don't originate them for non-ECS clients to get potentially more accurate "location aware" results.
This improves the checking so that if a certificate were to expire or the roots changed then we will go into a non-ready state.
This parses the x509 certificates from the TLS certificate when the leaf is set. The readyCh will be closed whenever a parseable certificate is set and the ca roots are set. This does not mean that the certificate is valid but that it has been setup and is generally valid. The Ready function will now do x509 certificate verification which will in addition to verifying the signatures with the installed CA roots will also verify the certificate isn't expired or not set to become valid in the future.
The correct way to use these functions is to wait for the ReadyWait chan to be closed and then periodically check the readiness to determine if the certificate is currently useable.
Fixes: #4578
Prior to this fix if there was an error binding to ports for the DNS servers the error would be swallowed by the gated log writer and never output. This fix propagates the DNS server errors back to the shell with a multierror.
* Implementation of Weights Data structures
Adding this datastructure will allow us to resolve the
issues #1088 and #4198
This new structure defaults to values:
```
{ Passing: 1, Warning: 0 }
```
Which means, use weight of 0 for a Service in Warning State
while use Weight 1 for a Healthy Service.
Thus it remains compatible with previous Consul versions.
* Implemented weights for DNS SRV Records
* DNS properly support agents with weight support while server does not (backwards compatibility)
* Use Warning value of Weights of 1 by default
When using DNS interface with only_passing = false, all nodes
with non-Critical healthcheck used to have a weight value of 1.
While having weight.Warning = 0 as default value, this is probably
a bad idea as it breaks ascending compatibility.
Thus, we put a default value of 1 to be consistent with existing behaviour.
* Added documentation for new weight field in service description
* Better documentation about weights as suggested by @banks
* Return weight = 1 for unknown Check states as suggested by @banks
* Fixed typo (of -> or) in error message as requested by @mkeeler
* Fixed unstable unit test TestRetryJoin
* Fixed unstable tests
* Fixed wrong Fatalf format in `testrpc/wait.go`
* Added notes regarding DNS SRV lookup limitations regarding number of instances
* Documentation fixes and clarification regarding SRV records with weights as requested by @banks
* Rephrase docs
* Adds XL machine spec and notes on large deployments
* Clarifies machine sizes
* Fixes internal links within the document
* Moves datacenter size guidelines to "Single Datacenter" section
* Added log-file flag to capture Consul logs in a user specified file
* Refactored code.
* Refactored code. Added flags to rotate logs based on bytes and duration
* Added the flags for log file and log rotation on the webpage
* Fixed TestSantize from failing due to the addition of 3 flags
* Introduced changes : mutex, data-dir log writes, rotation logic
* Added test for logfile and updated the default log destination for docs
* Log name now uses UnixNano
* TestLogFile is now uses t.Parallel()
* Removed unnecessary int64Val function
* Updated docs to reflect default log name for log-file
* No longer writes to data-dir and adds .log if the filename has no extension
* Move notification texts to a slightly different layer (#4572)
* Further Simplify/refactor the actions/notification layer (#4573)
1. Move the 'with-feedback' actions to a 'with-blocking-action' mixin
which better describes what it does
2. Additional set of unit tests almost over the entire layer to prove
things work/add confidence for further changes
The multiple 'with-action' mixins used for every 'index/edit' combo are
now reduced down to only contain the functionality related to their
specific routes, i.e. where to redirect.
The actual functionality to block and carry out the action and then
notify are 'almost' split out so that their respective classes/objects do
one thing and one thing 'well'.
Mixins are chosen for the moment as the decoration approach used by
mixins feels better than multiple levels of inheritence, but I would
like to take this fuether in the future to a 'compositional' based
approach.
There is still possible further work to be done here, but I'm a lot
happier now this is reduced down into separate parts.
* Begin refactoring CSS into component folders. Moved most
components into layout/skin folders, left out a couple of ones I want
to think about more.
* Adjust grays based on recent Structure changes
* Switch to fullscreen layout for lists and detail, left aligned forms (#4435)
* Specifically use the 'actions_close' label, not just the :last-child (actions-group)
* Replace some non-var-ed colours in vaults code skin, plus prefixing (black and white)
ui: Repo layer integration tests for methods that touch the API
Includes a `repo` test helper to make repetitive tasks easier, plus a
injectable reporter for sending performance metrics to a centralized metrics
system
Also noticed somewhere in the ember models that I'd like to improve, but left
for the moment to make sure I concentrate on one task at a time, more or less:
The tests currently asserts against the existing JSON tree, which doesn't
seem to be a very nice tree.
The work at hand here is to refactor what is there, so test for the not
nice tree to ensure we don't get any regression, and add a skipped test
so I can come back here later
WIP Unskip some lower level trivial tests.
This is the beginning of work to unskip some of the more trivial tests that I'd skipped a while back (if the thing they are testing broke, they would have failed higher up in other acceptance tests).
I'd rather keep the tests, as they do test things in a more isolated manner, and the plan was to always come back and work to unskip them time allowing.
I didn't get to far into this work in progress here, but I'd rather merge what I've done all the same and come back at a later date and continue.
By default, the Consul agent listens on the local interface
at port 8500 for API requests. This change makes the API examples
using `curl` copy-pasteable for this default configuration.
Paul Banks