Storage nodes undergoing Graceful Exit have up to now been receiving
hostnames for all other storage nodes they need to contact when
transferring pieces. This adds up to a lot of DNS lookups, which
apparently overwhelm some home routers. There does not seem to be any
need for us to send hostnames for graceful exit as opposed to IP
addresses; we already use IP addresses (as given by the last_ip_port
column in the nodes table) for all the GET and PUT orders we send out.
This change causes IP addresses to be used instead.
I started trying to construct a test to ensure that the behavior
changed, but it was rabbit-holing, so I've begun to feel that maybe this
change doesn't require one; it is a very simple change, and very much of
the same nature as what we already do for IPs in CreateGetOrderLimits
and CreatePutOrderLimits (and others).
Change-Id: Ib2b5ffe7a9310e9cdbe7464450cc7c934fa229a1
This preserves the last_ip_and_port field from node lookups through
CreateAuditOrderLimits() and CreateAuditOrderLimit(), so that later
calls to (*Verifier).GetShare() can try to use that IP and port. If a
connection to the given IP and port cannot be made, or the connection
cannot be verified and secured with the target node identity, an
attempt is made to connect to the original node address instead.
A similar change is not necessary to the other Create*OrderLimits
functions, because they already replace node addresses with the cached
IP and port as appropriate. We might want to consider making a similar
change to CreateGetRepairOrderLimits(), though.
The audit situation is unique because the ramifications are especially
powerful when we get the address wrong. Failing a single audit can have
a heavy cost to a storage node. We need to make extra effort in order
to avoid imposing that cost unfairly.
Situation 1: If an audit fails because the repair worker failed to make
a DNS query (which might well be the fault on the satellite side), and
we have last_ip_and_port information available for the target node, it
would be unfair not to try connecting to that last_ip_and_port address.
Situation 2: If a node has changed addresses recently and the operator
correctly changed its DNS entry, but we don't bother querying DNS, it
would be unfair to penalize the node for our failure to connect to it.
So the audit worker must try both last_ip_and_port _and_ the node
address as supplied by the SNO.
We elect here to try last_ip_and_port first, on the grounds that (a) it
is expected to work in the large majority of cases, and (b) there
should not be any security concerns with connecting to an out-or-date
address, and (c) avoiding DNS queries on the satellite side helps
alleviate satellite operational load.
Change-Id: I9bf6c6c79866d879adecac6144a6c346f4f61200
We are moving an error into rejectErr since its preventing storage nodes from being able to settle other orders.
Change-Id: I3ac97c340e491b127f5e0024c5e8bd9f4df8d5c3
Doing it at the ProcessOrders level was insufficient: the endpoints
make multiple database calls. It was a misguided attempt to only
have one spot enter the semaphore. By putting it in the endpoint
we can not only be sure that the concurrency is correctly limited
but it can be configurable easily.
Change-Id: I937149dd077adf9eb87fce52a1a17dc0afe96f64
This adds a config flag orders.window-endpoint-rollout-phase
that can take on the values phase1, phase2 or phase3.
In phase1, the current orders endpoint continues to work as
usual, and the windowed orders endpoint uses the same backend
as the current one (but also does a bit extra).
In phase2, the current orders endpoint is disabled and the
windowed orders endpoint continues to use the same backend.
In phase3, the current orders endpoint is still disabled and
the windowed orders endpoint uses the new backend that requires
much less database traffic and state.
The intention is to deploy in phase1, roll out code to nodes
to have them use the windowed endpoint, switch to phase2, wait
a couple days for all existing orders to expire, then switch
to phase3.
Additionally, it fixes a bug where a node could submit a bunch
of orders and rack up charges for a bucket.
Change-Id: Ifdc10e09ae1645159cbec7ace687dcb2d594c76d
It feels weird having a repairer configuration part of order services.
Let's have a single source of truth for it.
Change-Id: I24f7c897aec80f3293f8af24876cbb6733d85a0b
By ensuring that they have less randomness it means that they can be
compressed better. Using a timestamp should be a good improvement here.
Change-Id: Ic4dabb53335a744ff1c332dd279f37ae2cd79357
My understanding is that the nodes table has the following fields:
- `address` field which can be a hostname or an IP
- `last_net` field that is the /24 subnet of the IP resolved from the address
This PR does the following:
1) add back the `last_ip` field to the nodes table
2) for uplink operations remove the calls that the satellite makes to `lookupNodeAddress` (which makes the DNS calls to resolve the IP from the hostname) and instead use the data stored in the nodes table `last_ip` field. This means that the IP that the satellite sends to the uplink for the storage nodes could be approx 1 hr stale. In the short term this is fine, next we will be adding changes so that the storage node pushes any IP changes to the satellite in real time.
3) use the address field for repair and audit since we want them to still make DNS calls to confirm the IP is up to date
4) try to reduce confusion about hostname, ip, subnet, and address in the code base
Change-Id: I96ce0d8bb78303f82483d0701bc79544b74057ac
This change resolves all the storage node addresses to their IP addresses
before giving them to the uplink so that the uplink doesn't have to resolve
a hundred hosts and can immediately connect to improve uplink performance.
Change-Id: Idb834351e0fece409d74c8a1c29b0b8c9b09c9ff
For the last few month we had no issues with order submission. I would
call it stable and now it is time to risk a lower expire time. This will
increase the database performance on the satellite and it will reduce
the delay for billing.
The long term goal is 6h but for that step we need to change graceful
exit first. At the moment storage nodes would get disuqlaified for not
transfering alle pieces in less than 6 hours.
Change-Id: I421a2c2421c5374c4e706e2338f1c2161fedc14c
paths are organized as follows:
project_id/segment_index/bucket_name/encrypted_key
so by picking parts[0] and parts[1], we were using the segment
index instead of the bucket name, causing bandwidth to be
accounted for incorrectly. additionally, we were using the
PUT action instead of the PUT_GRACEFUL_EXIT action, causing
the data to be charged incorrectly. we use PUT_REPAIR for
now because nodes won't accept uploads with PUT_GRACEFUL_EXIT
and our tables need migrations to handle rollups with it.
Change-Id: Ife2aff541222bac930c35df8fcf76e8bac5d60b2
this commit introduces the reported_serials table. its purpose is
to allow for blind writes into it as nodes report in so that we have
minimal contention. in order to continue to accurately account for
used bandwidth, though, we cannot immediately add the settled amount.
if we did, we would have to give up on blind writes.
the table's primary key is structured precisely so that we can quickly
find expired orders and so that we maximally benefit from rocksdb
path prefix compression. we do this by rounding the expires at time
forward to the next day, effectively giving us storagenode petnames
for free. and since there's no secondary index or foreign key
constraints, this design should use significantly less space than
the current used_serials table while also reducing contention.
after inserting the orders into the table, we have a chore that
periodically consumes all of the expired orders in it and inserts
them into the existing rollups tables. this is as if we changed
the nodes to report as the order expired rather than as soon as
possible, so the belief in correctness of the refactor is higher.
since we are able to process large batches of orders (typically
a day's worth), we can use the code to maximally batch inserts into
the rollup tables to make inserts as friendly as possible to
cockroach.
Change-Id: I25d609ca2679b8331979184f16c6d46d4f74c1a6
When an uplink requests an upload or download from the satellite we are trackig the
allocated bandwidth twice. The value in bucket_bandwidth_rollups is used
for project limits but the value in storagenode_bandwidth_rollups is not
used at all. We can increase the performance by removing it. Uplinks
will get a faster response from the satellite.
Change-Id: Icccd41f94107ef34668f30f99bf5f728c384b07e
* rename pkg/linksharing to linksharing
* rename pkg/httpserver to linksharing/httpserver
* rename pkg/eestream to uplink/eestream
* rename pkg/stream to uplink/stream
* rename pkg/metainfo/kvmetainfo to uplink/metainfo/kvmetainfo
* rename pkg/auth/signing to pkg/signing
* rename pkg/storage to uplink/storage
* rename pkg/accounting to satellite/accounting
* rename pkg/audit to satellite/audit
* rename pkg/certdb to satellite/certdb
* rename pkg/discovery to satellite/discovery
* rename pkg/overlay to satellite/overlay
* rename pkg/datarepair to satellite/repair
* pkg/datarepair: Add test to check num upload pieces
Add a new test for ensuring the number of pieces that the repair process
upload when a segment is injured.
* satellite/orders: Don't create "put order limits" over total
Repair must not create "put order limits" more than the total count.
* pkg/datarepair: Update upload repair pieces test
Update the test which checks the number of pieces which are uploaded
during a repair for using the same excess over the success threshold
value than the implementation.
* satellites/orders: Limit repair put order for not being total
Limit the number of put orders to be used by repair for only uploading
pieces to a % excess over the successful threshold.
* pkg/datarepair: Change DataRepair test to pass again
Make some changes in the DataRepair test to make pass again after the
repair upload repaired pieces only until a % excess over success
threshold.
Also update the steps description of the DataRepair test after it has been
changed, to match on what's now, besides to leave it more generic for
avoiding having to update it on minimal future refactorings.
* satellite: Make repair excess optimal threshold configurable
Add a new configuration parameter to the satellite for being able to
configure the percentage excess over the optimal threshold, used for
determining how many pieces should be repaired/uploaded, rather than
having the value hard coded.
* repairer: Add configurable param to segments/repairer
Add a new parameters to the segment/repairer to calculate the maximum
number of excess nodes, based on the optimal threshold, that repaired
pieces can be uploaded.
This new parameter has been added for not returning more nodes than the
number of upload orders for data repair satellite service calculate for
repairing pieces.
* pkg/storage/ec: Update log message in clien.Repair
* satellite: Update configuration lock file
