Commit Graph

14 Commits

Author SHA1 Message Date
Wade Simmons 4756c9613d
trigger handshakes when lighthouse reply arrives (#246)
Currently, we wait until the next timer tick to act on the lighthouse's
reply to our HostQuery. This means we can easily add hundreds of
milliseconds of unnecessary delay to the handshake. To fix this, we
can introduce a channel to trigger an outbound handshake without waiting
for the next timer tick.

A few samples of cold ping time between two hosts that require a
lighthouse lookup:

    before (v1.2.0):

    time=156 ms
    time=252 ms
    time=12.6 ms
    time=301 ms
    time=352 ms
    time=49.4 ms
    time=150 ms
    time=13.5 ms
    time=8.24 ms
    time=161 ms
    time=355 ms

    after:

    time=3.53 ms
    time=3.14 ms
    time=3.08 ms
    time=3.92 ms
    time=7.78 ms
    time=3.59 ms
    time=3.07 ms
    time=3.22 ms
    time=3.12 ms
    time=3.08 ms
    time=8.04 ms

I recommend reviewing this PR by looking at each commit individually, as
some refactoring was required that makes the diff a bit confusing when
combined together.
2020-07-22 10:35:10 -04:00
Wade Simmons b37a91cfbc
add meta packet statistics (#230)
This change add more metrics around "meta" (non "message" type packets).
For lighthouse packets, we also record statistics around the specific
lighthouse meta type.

We don't keep statistics for the "message" type so that we don't slow
down the fast path (and you can just look at metrics on the tun
interface to find that information).
2020-06-26 13:45:48 -04:00
David Sonder 3212b769d4
fix typo in conntrack section in examples/config.yml (#236)
the rest of the conntrack values match the default
2020-06-26 11:08:22 -05:00
Wade Simmons 4f6313ebd3
fix config name for {remote,local}_allow_list (#219)
This config option should be snake_case, not camelCase.
2020-04-08 16:20:12 -04:00
Wade Simmons 0a474e757b
Add lighthouse.{remoteAllowList,localAllowList} (#217)
These settings make it possible to blacklist / whitelist IP addresses
that are used for remote connections.

`lighthouse.remoteAllowList` filters which remote IPs are allow when
fetching from the lighthouse (or, if you are the lighthouse, which IPs
you store and forward to querying hosts). By default, any remote IPs are
allowed. You can provide CIDRs here with `true` to allow and `false` to
deny. The most specific CIDR rule applies to each remote.  If all rules
are "allow", the default will be "deny", and vice-versa. If both "allow"
and "deny" rules are present, then you MUST set a rule for "0.0.0.0/0"
as the default.

    lighthouse:
      remoteAllowList:
        # Example to block IPs from this subnet from being used for remote IPs.
        "172.16.0.0/12": false

        # A more complicated example, allow public IPs but only private IPs from a specific subnet
        "0.0.0.0/0": true
        "10.0.0.0/8": false
        "10.42.42.0/24": true

`lighthouse.localAllowList` has the same logic as above, but it applies
to the local addresses we advertise to the lighthouse. Additionally, you
can specify an `interfaces` map of regular expressions to match against
interface names. The regexp must match the entire name. All interface
rules must be either true or false (and the default rule will be the
inverse). CIDR rules are matched after interface name rules.

Default is all local IP addresses.

    lighthouse:
      localAllowList:
        # Example to blacklist docker interfaces.
        interfaces:
          'docker.*': false

        # Example to only advertise IPs in this subnet to the lighthouse.
        "10.0.0.0/8": true
2020-04-08 15:36:43 -04:00
Ryan Huber 1297090af3
add configurable punching delay because of race-condition-y conntracks (#210)
* add configurable punching delay because of race-condition-y conntracks

* add changelog

* fix tests

* only do one punch per query

* Coalesce punchy config

* It is not is not set

* Add tests

Co-authored-by: Nate Brown <nbrown.us@gmail.com>
2020-03-27 11:26:39 -07:00
Ryan Huber 41968551f9
clarify that lighthouse IP should be nebula range (#196) 2020-02-28 11:35:55 -08:00
Wade Simmons 179a369130
add configuration options for HandshakeManager (#179)
This change exposes the current constants we have defined for the handshake
manager as configuration options. This will allow us to test and tweak
with different intervals and wait rotations.

    # Handshake Manger Settings
    handshakes:
      # Total time to try a handshake = sequence of `try_interval * retries`
      # With 100ms interval and 20 retries it is 23.5 seconds
      try_interval: 100ms
      retries: 20

      # wait_rotation is the number of handshake attempts to do before starting to try non-local IP addresses
      wait_rotation: 5
2020-02-21 16:25:11 -05:00
Wade Simmons eda344d88f
add logging.timestamp_format config option (#187)
This change introduces logging.timestamp_format, which allows
configuration of the Logrus TimestampFormat setting. The primary purpose
of this change was to allow logging with millisecond precision. The
default for `text` and `json` formats remains the same for backwards
compatibility.

timestamp format is specified in Go time format, see:

 - https://golang.org/pkg/time/#pkg-constants

Default when `format: json`: "2006-01-02T15:04:05Z07:00" (RFC3339)
Default when `format: text`:
  when TTY attached: seconds since beginning of execution
  otherwise: "2006-01-02T15:04:05Z07:00" (RFC3339)

As an example, to log as RFC3339 with millisecond precision, set to:

    logging:
        timestamp_format: "2006-01-02T15:04:05.000Z07:00"
2020-02-21 15:25:00 -05:00
Nate Brown c359a5cf71 Correct example config doc 2019-12-17 23:43:10 -08:00
Ryan Huber cedf9549a6 derp- example config is now less silly 2019-12-12 18:50:52 +00:00
Ryan Huber 9333a8e3b7 subnet support 2019-12-12 16:34:17 +00:00
Robin B a086d60edc Allow configuration of dns listener host/port (#74)
* Allow configuration of dns listener host/port

* Make DNS listen host/port configuration HUP-able
2019-12-11 17:42:55 -08:00
Ryan Huber 29c0523714 rename file to .yml to prevent confusion with example start scripts 2019-12-02 15:31:53 +00:00