inconsistency
The original design had a flaw which can potentially cause discrepancy
for nodes reputation status between reputations table and nodes table.
In the event of a failure(network issue, db failure, satellite failure, etc.)
happens between update to reputations table and update to nodes table, data
can be out of sync.
This PR tries to fix above issue by passing through node's reputation from
the beginning of an audit/repair(this data is from nodes table) to the next
update in reputation service. If the updated reputation status from the service
is different from the existing node status, the service will try to update nodes
table. In the case of a failure, the service will be able to try update nodes
table again since it can see the discrepancy of the data. This will allow
both tables to be in-sync eventually.
Change-Id: Ic22130b4503a594b7177237b18f7e68305c2f122
Since we are sharing the reporting logic between repair and audit. We
need to remove metric reporting logic in reporter.
Change-Id: Ib87295ab19079329e7438327d785a7f5c21d3b21
GetRandomStripe function to randomly select a segment stripe to
audit was using `segment.EncryptedSize/segment.Redundancy.StripeSize()`.
Since integer divsion truncates it leads to skipping last stripe if
its size is less than stripe size. Use `Redundancy.StripeCount` to
get correct stripe count.
Change-Id: Ida09e035be30a21219ab3e1aedd66af8be707d1b
If we encounter an error during the infectious error correction, we just
add it to the errlist to be logged at the worker level.
We want to make sure we know about this if it happens. Give it its own
error log and increment a monkit metric.
Change-Id: Ie5946ae3cd97b766e3099af8ce160a686135ee27
When we can't complete an audit or repair, we need more information about
what happened during each individual share/piece download.
In audit, add the number of offline, unknown, contained, failed nodes to
the error log. In repair, combine the errors from each download and add
them to the error log.
Change-Id: Ic5d2a0f3f291f26cb82662bfb37355dd2b5c89ba
In most situations where we would not get enough shares to complete
an audit, something has probably gone wrong like a forgotten delete,
and nodes should not be failed. We have an alert when this occurs.
Check the logs to see what happened. If we decide the nodes should
get audit failures, we can do it manually.
Change-Id: Ib6e408082048d31197c37ebfd7f9031135fc938f
Currently, pending audit is finding segment by segment location
(path) because we want to move audit to segmentloop and we will
have only StreamID and Position we need to add columns for those
fields. Altering existing table can cause issues while
migration and deployment. Cleaner choise is to make new table.
This change contains migration with new segment_pending_audit
table that will replace pending_audits table and adjustments
to use new table in the code.
Table pending_audits will be dropped with next release.
Change-Id: Id507e29c152da594bac1fd812c78d7ecf45ec51f
Until now, whenever audits were recorded we would try to delete
the node from containment just in case it exists. Since we now
want to treat segment repair downloads as audits, this would
erroneously remove nodes from containment, as repair does not go
through a Reverify step. With this changeset, (Batch)UpdateStats
will not remove nodes from containment. The Reverify method will
remove all necessary nodes from containment.
Change-Id: Iabc9496293076dccba32ddfa028e92580b26167f
Currently the interface is not useful. When we need to vary the
implementation for testing purposes we can introduce a local interface
for the service/chore that needs it, rather than using the large api.
Unfortunately, this requires adding a cleanup callback for tests, there
might be a better solution to this problem.
Change-Id: I079fe4dbe297b0ae08c10081a1cea4dfbc277682
metabase has become a central concept and it's more suitable for it to
be directly nested under satellite rather than being part of metainfo.
metainfo is going to be the "endpoint" logic for handling requests.
Change-Id: I53770d6761ac1e9a1283b5aa68f471b21e784198
Among other conditions, nodes fail audits by returning incorrect
data and by reaching the max reverify count, but we weren't logging
these events. This commit adds the missing logs.
Change-Id: I80749a7e95e8cb97bc8dd7dac1e523e223114b7f
Previously if node was not found in containment, it was
given the status, 'skipped'.
We later try to delete skipped nodes from containment.
To fix this, add a new status called 'remove' to differentiate
nodes which should be skipped and nodes which should be deleted.
Change-Id: Ic09e62dc9723c89d0c9f968ce68c039114a9d74e
We now have the piece hashes verified for all segments on all production
satellites. We can remove the code that handles the case where piece
hashes are not verified. This would make easier the migration of
services from PointerDB to the new metabase.
For consistency, PieceHashesVerified is still set to true in PointerDB
for new segments.
Change-Id: Idf0ccce4c8d01ae812f11e8384a7221d90d4c183
A year ago we made the audit service deleting expired segments.
Meanwhile, we introduced an expired deletetion sub-service in the
metainfo service which sole purpose is deleting expired segments.
Therefore, now we are removing this responsibility from the audit
service. It will continue to avoid reporting failures on expired
segments, but it would not delete them anymore.
We do this to cleanup responsibilities in advance of the metainfo
refactoring.
Change-Id: Id7aab2126f9289dbb5b0bdf7331ba7a3328730e4
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
The VerifyPieceHashes method has a sanity check for the number pieces to
be removed from the pointer after the audit for verifying the piece
hashes.
This sanity check failed when we executed the command on the production
satellites because the Verify command removes Fails and PendingAudits
nodes from the audit report if piece_hashes_verified = false.
A new temporary UsedToVerifyPieceHashes flag is added to
audits.Verifier. It is set to true only by the verify-piece-hashes
command. If the flag is true then the Verify method will always include
Fails and PendingAudits nodes in the report.
Test case is added to cover this use case.
Change-Id: I2c7cb6b12029d52b2fc565365eee0826c3de6ee8
Jira: https://storjlabs.atlassian.net/browse/PG-69
There are a number of segments with piece_hashes_verified = false in
their metadata) on US-Central-1, Europe-West-1, and Asia-East-1
satellites. Most probably, this happened due to a bug we had in the
past. We want to verify them before executing the main migration to
metabase. This would simplify the main migration to metabase with one
less issue to think about.
Change-Id: I8831af1a254c560d45bb87d7104e49abd8242236
If a segment is deleted, is modified, or expires during an audit, this
is not problematic, so we should not return errors. Functionally,
nothing changes, but our metrics around audit success rate will be
improved after this change.
Change-Id: Ic11df056b2c73894b67a55894bd4d58c00470606
We have been using the SQL expression `name='(*Verifier).Verify' AND
error_name='not enough shares for successful audit'` thus far to detect
cases of this problem and alert on them. Unfortunately, since this
rarely (hopefully never) happens, influxdb has no data for most of the
auditor instances, and when it has no data for a time series, it returns
no columns either. This makes Redash upset when it tries to perform a
query for an alert and can't find the column whose value it expects to
check.
This change should make it so zero values are reported when the problem
has not happened, and higher values when it has.
Change-Id: I79e5e000f879678b661dac88caae1e2915b39ab1
- Previously, checkSegmentAltered only checked for segments that were replaced
but we want to detect all changes to a segment that occurred while an audit was being conducted.
- Fixed a bug where nodes failing audits during reverify for non-piece-hash-verified
segments were not being removed from containment mode.
- Filled in gaps in reverify testing to ensure nodes are properly removed from containment.
Change-Id: Icd96d369278987200fd28581395725438972b292
this commit updates our monkit dependency to the v3 version where
it outputs in an influx style. this makes discovery much easier
as many tools are built to look at it this way.
graphite and rothko will suffer some due to no longer being a tree
based on dots. hopefully time will exist to update rothko to
index based on the new metric format.
it adds an influx output for the statreceiver so that we can
write to influxdb v1 or v2 directly.
Change-Id: Iae9f9494a6d29cfbd1f932a5e71a891b490415ff
* skip unknown errors (wip)
* add tests to make sure nodes that time out are added to containment
* add bad blobs store
* call "Skipped" "Unknown"
* add tests to ensure unknown errors do not trigger containment
* add monkit stats to lockfile
* typo
* add periods to end of bad blobs comments
