Commit Graph

16 Commits (717621698d7b883aa05e36031c92b96c103c0f40)

Author SHA1 Message Date
freddygv cbea3d203c Fix race of upstreams with same passthrough ip
Due to timing, a transparent proxy could have two upstreams to dial
directly with the same address.

For example:
- The orders service can dial upstreams shipping and payment directly.
- An instance of shipping at address 10.0.0.1 is deregistered.
- Payments is scaled up and scheduled to have address 10.0.0.1.
- The orders service receives the event for the new payments instance
before seeing the deregistration for the shipping instance. At this
point two upstreams have the same passthrough address and Envoy will
reject the listener configuration.

To disambiguate this commit considers the Raft index when storing
passthrough addresses. In the example above, 10.0.0.1 would only be
associated with the newer payments service instance.
2022-02-10 17:01:57 -07:00
freddygv 659ebc05a9 Ensure passthrough addresses get cleaned up
Transparent proxies can set up filter chains that allow direct
connections to upstream service instances. Services that can be dialed
directly are stored in the PassthroughUpstreams map of the proxycfg
snapshot.

Previously these addresses were not being cleaned up based on new
service health data. The list of addresses associated with an upstream
service would only ever grow.

As services scale up and down, eventually they will have instances
assigned to an IP that was previously assigned to a different service.
When IP addresses are duplicated across filter chain match rules the
listener config will be rejected by Envoy.

This commit updates the proxycfg snapshot management so that passthrough
addresses can get cleaned up when no longer associated with a given
upstream.

There is still the possibility of a race condition here where due to
timing an address is shared between multiple passthrough upstreams.
That concern is mitigated by #12195, but will be further addressed
in a follow-up.
2022-02-10 17:01:57 -07:00
R.B. Boyer 424f3cdd2c
proxycfg: introduce explicit UpstreamID in lieu of bare string (#12125)
The gist here is that now we use a value-type struct proxycfg.UpstreamID
as the map key in ConfigSnapshot maps where we used to use "upstream
id-ish" strings. These are internal only and used just for bidirectional
trips through the agent cache keyspace (like the discovery chain target
struct).

For the few places where the upstream id needs to be projected into xDS,
that's what (proxycfg.UpstreamID).EnvoyID() is for. This lets us ALWAYS
inject the partition and namespace into these things without making
stuff like the golden testdata diverge.
2022-01-20 10:12:04 -06:00
freddygv ba12dc215b Clean up chains separately from their watches 2021-12-13 18:56:14 -07:00
freddygv 70d6358426 Store intention upstreams in snapshot 2021-12-13 18:56:13 -07:00
R.B. Boyer 81ea8129d7
proxycfg: ensure all of the watches are canceled if they are cancelable (#11824) 2021-12-13 15:56:17 -06:00
R.B. Boyer 631c649291
various partition related todos (#11822) 2021-12-13 11:43:33 -06:00
Daniel Nephin eb632c53a2 structs: rename the last helper method.
This one gets used a bunch, but we can rename it to make the behaviour more obvious.
2021-09-29 11:48:38 -04:00
Daniel Nephin 6d72517682 structs: remove two methods that were only used once each.
These methods only called a single function. Wrappers like this end up making code harder to read
because it adds extra ways of doing things.

We already have many helper functions for constructing these types, we don't need additional methods.
2021-09-29 11:47:03 -04:00
freddygv 95a6db9cfa Account for partitions in ixn match/decision 2021-09-16 14:39:01 -06:00
freddygv 77681b9f6c Pass partition to intention match query 2021-09-15 17:23:52 -06:00
Dhia Ayachi bc0e4f2f46
partition dicovery chains (#10983)
* partition dicovery chains

* fix default partition for OSS
2021-09-07 16:29:32 -04:00
Dhia Ayachi 1950ebbe1f
oss portion of ent #1069 (#10883) 2021-08-20 12:57:45 -04:00
R.B. Boyer 097e1645e3
agent: ensure that most agent behavior correctly respects partition configuration (#10880) 2021-08-19 15:09:42 -05:00
R.B. Boyer 188e8dc51f
agent/structs: add a bunch more EnterpriseMeta helper functions to help with partitioning (#10669) 2021-07-22 13:20:45 -05:00
Daniel Nephin 6bc5255028 proxycfg: move each handler into a seprate file
There is no interaction between these handlers, so splitting them into separate files
makes it easier to discover the full implementation of each kindHandler.
2021-06-21 15:48:40 -04:00