* lib/promscrape: make concurrency control optional
Before, `-maxConcurrentInserts` was limiting all calls to `promscrape.Parse`
function: during ingestion and scraping. This behavior is incorrect.
Cmd-line flag `-maxConcurrentInserts` should have effect onl on ingestion.
Since both pipelines use the same `promscrape.Parse` function, we extend it
to make concurrency limiter optional. So caller can decide whether concurrency
should be limited or not.
This commit makes c53b5788b4
obsolete.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* Revert "dashboards: move `Concurrent inserts` panel to Troubleshooting section"
This reverts commit c53b5788b4.
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Signed-off-by: hagen1778 <roman@victoriametrics.com>
- Move uniqueFields from rows to blockStreamMerger struct.
This allows localizing all the references to uniqueFields inside blockStreamMerger.mustWriteBlock(),
which should improve readability and maintainability of the code.
- Remove logging of the event when blocks cannot be merged because they contain more than maxColumnsPerBlock,
since the provided logging didn't provide the solution for the issue with too many columns.
I couldn't figure out the proper solution, which could be helpful for end user,
so decided to remove the logging until we find the solution.
This commit also contains the following additional changes:
- It truncates field names longer than 128 chars during logs ingestion.
This should prevent from ingesting bogus field names.
This also should prevent from too big columnsHeader blocks,
which could negatively affect search query performance,
since columnsHeader is read on every scan of the corresponding data block.
- It limits the maximum length of const column value to 256.
Longer values are stored in an ordinary columns.
This helps limiting the size of columnsHeader blocks
and improving search query performance by avoiding
reading too long const columns on every scan of the corresponding data block.
- It deduplicates columns with identical names during data ingestion
and background merging. Previously it was possible to pass columns with duplicate names
to block.mustInitFromRows(), and they were stored as is in the block.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4762
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4969
docs: add clarification of the retention filter usage
Updated documentation regarding retention filter usage if duration is set lower than
`-retentionPeriod` flag value.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: hagen1778 <roman@victoriametrics.com>
* lib/promscrape: add metric `vm_promscrape_scrapes_skipped_total`
add metric `vm_promscrape_scrapes_skipped_total`to show whether vmagent skips the scrapes.
This could happen if vmagent is overloaded or target is responding too slow for configured `scrape_interval`.
The follow-up commit should add a corresponding alerting rule and panel to vmagent dashboard.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* deployment/docker: add `TooManyScrapeSkips` alerting rule for vmagent
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* dashboards: add panels `Scrape duration 0.99 quantile` and `Skipped scrapes` to vmagent dashboard
Signed-off-by: hagen1778 <roman@victoriametrics.com>
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Signed-off-by: hagen1778 <roman@victoriametrics.com>
* lib/logstorage: prevent from panic during background merge
Fixes panic during background merge when resulting block would contain more columns than maxColumnsPerBlock.
Buffered data will be flushed and replaced by the next block.
See: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4762
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* lib/logstorage: clarify field description and comment
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
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Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* lib/logstorage: switch to read-only mode when running out of disk space
Added support of `--storage.minFreeDiskSpaceBytes` command-line flag to allow graceful handling of running out of disk space at `--storageDataPath`.
See: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4737
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* lib/logstorage: fix error handling logic during merge
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* lib/logstorage: fix log level
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
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Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
Co-authored-by: Nikolay <nik@victoriametrics.com>
* vmui: update information about tsdb usage in cluster version
* vmui: cleanup
* vmui: add CHANGELOG.md
* vmui: cleanup
* vmui: update logic, move information to the visible place
* app/vmui: remove values fetch, update documentation for cardinality explorer
* app/vmui: update CHANGELOG.md
Moved because this panel is related to both: scraped and ingested data.
Before, it could have give a misleading impression that it is related to ingested metrics only.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* docker-compose: add vmauth to cluster env
vmauth acts as a balancer and used as an example of how to interconnect
VM components via vmauth.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* docker-compose: add vmauth to cluster env
vmauth acts as a balancer and used as an example of how to interconnect
VM components via vmauth.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
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Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: Nikolay <nik@victoriametrics.com>
`median_over_time` is handled by predefined WITH template in MetricsQL library which translates it to `quantile_over_time(0.5)`
This makes it impossble to use `median_over_time` as a usual rollup function for `aggr_over_time`.
See: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5034
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
lib/promscrape/discovery/kubernetes: supress context.Cancelled error in logs
It is possible that context.Cancelled will appear after k8s watcher was closed due to reload(see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4850).
Logging an error misinforms user and looks like vmagent discovery will stop working even though this does not affect discovery.
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
