The loopback-test fixes seem to be sufficient to resolve the flakiness
of all the tests aside from TestFlakyNetworkDBIslands.
Signed-off-by: Cory Snider <csnider@mirantis.com>
NetworkDB defaults to binding to the unspecified address for gossip
communications, with no advertise address set. In this configuration,
the memberlist instance listens on all network interfaces and picks one
of the host's public IP addresses as the advertise address.
The NetworkDB unit tests don't override this default, leaving them
vulnerable to flaking out as a result of rogue network traffic
perturbing the test, or the inferred advertise address not being useable
for loopback testing. And macOS prompts for permission to allow the test
executable to listen on public interfaces every time it is rebuilt.
Modify the NetworkDB tests to explicitly bind to, advertise, and join
ports on 127.0.0.1 to make the tests more robust to flakes in CI and
more convenient to run locally.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The function was accessing the index map without holding the mutex, so
it would race any mutation to the database indexes. Fetch the reference
to the tree's root while holding a read lock. Since the radix tree is
immutable, taking a reference to the root is equivalent to starting a
read-only database transaction, providing a consistent view of the data
at a snapshot in time, even as the live state is mutated concurrently.
Also optimize the WalkTable function by leveraging the immutability of
the radix tree.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Mark the following tests as flaky:
- TestNetworkDBCRUDTableEntry
- TestNetworkDBCRUDTableEntries
- TestNetworkDBIslands
- TestNetworkDBNodeLeave
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
The github.com/containerd/containerd/log package was moved to a separate
module, which will also be used by upcoming (patch) releases of containerd.
This patch moves our own uses of the package to use the new module.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This function was implemented in dd4950f36d
which added a "key" field, but that field was never used anywhere, and
still appears unused.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The per-network statistics counters are loaded and incremented without
any concurrency control. Use atomic integers to prevent data races
without having to add any synchronization.
Signed-off-by: Cory Snider <csnider@mirantis.com>
In network node change test, the expected behavior is focused on how many nodes
left in networkDB, besides timing issues, things would also go tricky for a
leave-then-join sequence, if the check (counting the nodes) happened before the
first "leave" event, then the testcase actually miss its target and report PASS
without verifying its final result; if the check happened after the 'leave' event,
but before the 'join' event, the test would report FAIL unnecessary;
This code change would check both the db changes and the node count, it would
report PASS only when networkdb has indeed changed and the node count is expected.
Signed-off-by: David Wang <00107082@163.com>
The io/ioutil package has been deprecated in Go 1.16. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
Perhaps the testutils package in the past had an `init()` function to set up
specific things, but it no longer has. so these imports were doing nothing.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
`github.com/hashicorp/memberlist` update caused `TestNetworkDBCRUDTableEntries`
to occasionally fail, because the test would try to check whether an entry
write is propagated to all nodes, but it would not wait for all nodes to
be available before performing the write.
It could be that the failure is caused simply by improved performance of
the dependency - it could also be that some connectivity guarantee the
test depended on is not provided by the dependency anymore.
The same fix is applied to `TestNetworkDBNodeJoinLeaveIteration` due to
same issue.
Signed-off-by: Roman Volosatovs <roman.volosatovs@docker.com>
This allows the rejoin intervals to be chosen according to the context
within which the component is used, and, in particular, this allows
lower intervals to be used within TestNetworkDBIslands test.
Signed-off-by: Roman Volosatovs <roman.volosatovs@docker.com>
After moving libnetwork to this repo, we need to update all the import
paths for libnetwork to point to docker/docker/libnetwork instead of
docker/libnetwork.
This change implements that.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Fixed these tests :
1.TestNetworkDBIslands
Addresses : https://github.com/docker/libnetwork/issues/2402
2.TestNetworkDBCRUDMediumCluster
Addresses : https://github.com/docker/libnetwork/issues/2401
By :
1. Importing gotest.tools/poll to use poll.WaitOn
Above function can be used to check a condition at regular intervals
until a timeout is reached
2. Replacing Sleep with poll.WaitOn
2. Adding closeNetworkDBInstances to close remaining DBs
Signed-off-by: Arko Dasgupta <arko.dasgupta@docker.com>
```
make lint
networkdb/networkdb_test.go:88:2: should replace t.Error(fmt.Sprintf(...)) with t.Errorf(...)
networkdb/networkdb_test.go:136:2: should replace t.Error(fmt.Sprintf(...)) with t.Errorf(...)
make: *** [lint] Error 1
```
Signed-off-by: Lei Gong <lgong@alauda.io>
Refactor the ostweaks file to allows a more easy reuse
Add a method on the osl.Sandbox interface to allow setting
knobs on the sandbox
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
Previous logic was not accounting that each node is
in the node list so the bootstrap nodes won't retry
to reconnect because they will always find themselves
in the node map
Added test that validate the gossip island condition
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
Avoid waiting for a double notification once a node rejoin, just
put it back to active state. Waiting for a further message does not
really add anything to the safety of the operation, the source of truth
for the node status resided inside memberlist.
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
Created method to handle the node state change with cleanup operation
associated.
Realign testing client with the new diagnostic interface
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
- Create a test to verify that a node that joins
in an async way is not going to extend the life
of a already deleted object
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
Separate the hostname from the node identifier. All the messages
that are exchanged on the network are containing a nodeName field
that today was hostname-uniqueid. Now being encoded as strings in
the protobuf without any length restriction they plays a role
on the effieciency of protocol itself. If the hostname is very long
the overhead will increase and will degradate the performance of
the database itself that each single cycle by default allows 1400
bytes payload
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
- Changed the loop per network. Previous implementation was taking a
ReadLock to update the reapTime but now with the residualReapTime
also the bulkSync is using the same ReadLock creating possible
issues in concurrent read and update of the value.
The new logic fetches the list of networks and proceed to the
cleanup network by network locking the database and releasing it
after each network. This should ensure a fair locking avoiding
to keep the database blocked for too much time.
Note: The ticker does not guarantee that the reap logic runs
precisely every reapTimePeriod, actually documentation says that
if the routine is too long will skip ticks. In case of slowdown
of the process itself it is possible that the lifetime of the
deleted entries increases, it still should not be a huge problem
because now the residual reaptime is propagated among all the nodes
a slower node will let the deleted entry being repropagate multiple
times but the state will still remain consistent.
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
- Introduce the possibility to specify the max buffer length
in network DB. This will allow to use the whole MTU limit of
the interface
- Add queue stats per network, it can be handy to identify the
node's throughput per network and identify unbalance between
nodes that can point to an MTU missconfiguration
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
A rapid (within networkReapTime 30min) leave/join network
can corrupt the list of nodes per network with multiple copies
of the same nodes.
The fix makes sure that each node is present only once
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
The channel ch.C is never closed.
Added the listen of the ch.Done() to guarantee
that the goroutine is exiting once the event channel
is closed
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
