Commit Graph

202 Commits

Author SHA1 Message Date
freddygv 8eaca35df1 Account for upstream targets in another DC.
Transparent proxies typically cannot dial upstreams in remote
datacenters. However, if their upstream configures a redirect to a
remote DC then the upstream targets will be in another datacenter.

In that sort of case we should use the WAN address for the passthrough.
2022-02-10 17:01:57 -07:00
freddygv 7fba7456ec 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 d5a2eb677f 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
freddygv 68dea758dd Add failing test
The updated test fails because passthrough upstream addresses are not
being cleaned up.
2022-01-27 18:56:47 -07:00
R.B. Boyer 05c7373a28 bulk rewrite using this script
set -euo pipefail

    unset CDPATH

    cd "$(dirname "$0")"

    for f in $(git grep '\brequire := require\.New(' | cut -d':' -f1 | sort -u); do
        echo "=== require: $f ==="
        sed -i '/require := require.New(t)/d' $f
        # require.XXX(blah) but not require.XXX(tblah) or require.XXX(rblah)
        sed -i 's/\brequire\.\([a-zA-Z0-9_]*\)(\([^tr]\)/require.\1(t,\2/g' $f
        # require.XXX(tblah) but not require.XXX(t, blah)
        sed -i 's/\brequire\.\([a-zA-Z0-9_]*\)(\(t[^,]\)/require.\1(t,\2/g' $f
        # require.XXX(rblah) but not require.XXX(r, blah)
        sed -i 's/\brequire\.\([a-zA-Z0-9_]*\)(\(r[^,]\)/require.\1(t,\2/g' $f
        gofmt -s -w $f
    done

    for f in $(git grep '\bassert := assert\.New(' | cut -d':' -f1 | sort -u); do
        echo "=== assert: $f ==="
        sed -i '/assert := assert.New(t)/d' $f
        # assert.XXX(blah) but not assert.XXX(tblah) or assert.XXX(rblah)
        sed -i 's/\bassert\.\([a-zA-Z0-9_]*\)(\([^tr]\)/assert.\1(t,\2/g' $f
        # assert.XXX(tblah) but not assert.XXX(t, blah)
        sed -i 's/\bassert\.\([a-zA-Z0-9_]*\)(\(t[^,]\)/assert.\1(t,\2/g' $f
        # assert.XXX(rblah) but not assert.XXX(r, blah)
        sed -i 's/\bassert\.\([a-zA-Z0-9_]*\)(\(r[^,]\)/assert.\1(t,\2/g' $f
        gofmt -s -w $f
    done
2022-01-20 10:46:23 -06:00
R.B. Boyer baf886c6f3
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
Dhia Ayachi 5f6bf369af
reset `coalesceTimer` to nil as soon as the event is consumed (#11924)
* reset `coalesceTimer` to nil as soon as the event is consumed

* add change log

* refactor to add relevant test.

* fix linter

* Apply suggestions from code review

Co-authored-by: Freddy <freddygv@users.noreply.github.com>

* remove non needed check

Co-authored-by: Freddy <freddygv@users.noreply.github.com>
2022-01-05 12:17:47 -05:00
freddygv d7975586d6 Purge chain if it shouldn't be there 2021-12-13 18:56:44 -07:00
freddygv e1d4797561 Account for new upstreams constraint in tests 2021-12-13 18:56:28 -07:00
freddygv 16d3efc4b5 Check ingress upstreams when gating chain watches 2021-12-13 18:56:28 -07:00
freddygv d647141a7d Avoid storing chain without an upstream 2021-12-13 18:56:14 -07:00
freddygv 9e0958f1d2 Clean up chains separately from their watches 2021-12-13 18:56:14 -07:00
freddygv ea26a7b7cf Store intention upstreams in snapshot 2021-12-13 18:56:13 -07:00
R.B. Boyer 72a81cfc4a
proxycfg: ensure all of the watches are canceled if they are cancelable (#11824) 2021-12-13 15:56:17 -06:00
R.B. Boyer 3dccd14d31
proxycfg: use external addresses in tproxy when crossing partition boundaries (#11823) 2021-12-13 14:34:49 -06:00
R.B. Boyer a0156785dd
various partition related todos (#11822) 2021-12-13 11:43:33 -06:00
R.B. Boyer 83bf7ab3ff
re-run gofmt on 1.17 (#11579)
This should let freshly recompiled golangci-lint binaries using Go 1.17
pass 'make lint'
2021-11-16 12:04:01 -06:00
freddygv f33eae6fe1 Update proxycfg for ingress service partitions 2021-11-12 14:33:31 -07:00
Freddy eb2b40b22d
Update filter chain creation for sidecar/ingress listeners (#11245)
The duo of `makeUpstreamFilterChainForDiscoveryChain` and `makeListenerForDiscoveryChain` were really hard to reason about, and led to concealing a bug in their branching logic. There were several issues here:

- They tried to accomplish too much: determining filter name, cluster name, and whether RDS should be used. 
- They embedded logic to handle significantly different kinds of upstream listeners (passthrough, prepared query, typical services, and catch-all)
- They needed to coalesce different data sources (Upstream and CompiledDiscoveryChain)

Rather than handling all of those tasks inside of these functions, this PR pulls out the RDS/clusterName/filterName logic.

This refactor also fixed a bug with the handling of [UpstreamDefaults](https://www.consul.io/docs/connect/config-entries/service-defaults#defaults). These defaults get stored as UpstreamConfig in the proxy snapshot with a DestinationName of "*", since they apply to all upstreams. However, this wildcard destination name must not be used when creating the name of the associated upstream cluster. The coalescing logic in the original functions here was in some situations creating clusters with a `*.` prefix, which is not a valid destination.
2021-11-09 14:43:51 -07:00
Daniel Upton caa5b5a5a6
xds: prefer fed state gateway definitions if they're fresher (#11522)
Fixes an issue described in #10132, where if two DCs are WAN federated
over mesh gateways, and the gateway in the non-primary DC is terminated
and receives a new IP address (as is commonly the case when running them
on ephemeral compute instances) the primary DC is unable to re-establish
its connection until the agent running on its own gateway is restarted.

This was happening because we always preferred gateways discovered by
the `Internal.ServiceDump` RPC (which would fail because there's no way
to dial the remote DC) over those discovered in the federation state,
which is replicated as long as the primary DC's gateway is reachable.
2021-11-09 16:45:36 +00:00
freddygv ecccf22fd7 Exclude default partition from GatewayKey string
This will behave the way we handle SNI and SPIFFE IDs, where the default
partition is excluded.

Excluding the default ensures that don't attempt to compare default.dc2
to dc2 in OSS.
2021-11-01 14:45:52 -06:00
freddygv d944e6ae3a Update GatewayKeys deduplication
Federation states data is only keyed on datacenter, so it cannot be
directly compared against keys for gateway groups.
2021-11-01 13:58:53 -06:00
freddygv ce43e8cf99 Store GatewayKey in proxycfg snapshot for re-use 2021-11-01 13:58:53 -06:00
freddygv 6657c88296 Update locality check in proxycfg 2021-11-01 13:58:53 -06:00
freddygv 40271beb38 Fixup partitions assertion 2021-10-27 11:15:25 -06:00
freddygv 9769b31641 Move the exportingpartitions constant to enterprise 2021-10-27 11:15:25 -06:00
freddygv 0391a65772 Replace default partition check 2021-10-27 11:15:25 -06:00
freddygv ee45ac9dc5 PR comments 2021-10-27 11:15:25 -06:00
freddygv 8b5a9369eb Account for partitions in xds gen for mesh gw
This commit avoids skipping gateways in remote partitions of the local
DC when generating listeners/clusters/endpoints.
2021-10-27 11:15:25 -06:00
freddygv 4f0432be5e Update xds pkg to account for GatewayKey 2021-10-27 09:03:56 -06:00
freddygv f3f15640a9 Update mesh gateway proxy watches for partitions
This commit updates mesh gateway watches for cross-partitions
communication.

* Mesh gateways are keyed by partition and datacenter.

* Mesh gateways will now watch gateways in partitions that export
services to their partition.

* Mesh gateways in non-default partitions will not have cross-datacenter
watches. They are not involved in traditional WAN federation.
2021-10-27 09:03:56 -06:00
freddygv 1bade08f91 Replace Split with SplitN 2021-10-26 23:36:01 -06:00
freddygv 3966677aaf Finish removing useInDatacenter 2021-10-26 23:36:01 -06:00
freddygv ea311d2e47 Configure sidecars to watch gateways in partitions
Previously the datacenter of the gateway was the key identifier, now it
is the datacenter and partition.

When dialing services in other partitions or datacenters we now watch
the appropriate partition.
2021-10-26 23:35:37 -06:00
Paul Banks 5c8702b182 Add support for enabling connect-based ingress TLS per listener. 2021-10-19 20:58:28 +01:00
Daniel Nephin 1bc07c5166 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 17652227f6 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
Paul Banks f4f0793a10 Minor PR typo and cleanup fixes 2021-09-23 10:13:19 +01:00
Paul Banks 4cc1ccf892 Revert abandonned changes to proxycfg for Ent test consistency 2021-09-23 10:13:19 +01:00
Paul Banks 9422e4ebc7 Handle namespaces in route names correctly; add tests for enterprise 2021-09-23 10:09:11 +01:00
Paul Banks 8548e15f1b Update proxycfg to hold more ingress config state 2021-09-23 10:08:02 +01:00
Paul Banks 0e410a1b1f Add ingress-gateway config for SDS 2021-09-23 10:08:02 +01:00
freddygv 661f520841 Fixup proxycfg tproxy case 2021-09-16 15:05:28 -06:00
freddygv 8a9bf3748c Account for partitions in ixn match/decision 2021-09-16 14:39:01 -06:00
freddygv 7927a97c2f Fixup manager tests 2021-09-15 17:24:05 -06:00
freddygv 0cdcbbb4c9 Pass partition to intention match query 2021-09-15 17:23:52 -06:00
Paul Banks 1dd1683ed9 Header manip for split legs plumbing 2021-09-10 21:09:24 +01:00
Paul Banks f70f7b2389 Header manip for service-router plumbed through 2021-09-10 21:09:24 +01:00
Paul Banks fc2ed4cdf4 Ingress gateway header manip plumbing 2021-09-10 21:09:24 +01:00
Dhia Ayachi 96d7842118
partition dicovery chains (#10983)
* partition dicovery chains

* fix default partition for OSS
2021-09-07 16:29:32 -04:00