Commit graph

132 commits

Author SHA1 Message Date
gotjosh 37b408c6cd
Feature: Allow configuration of a rule evaluation delay (#14061)
* [PATCH] Allow having evaluation delay for rule groups

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* [PATCH] Fix lint

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* [PATCH] Move the option to ManagerOptions

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* [PATCH] Include evaluation_delay in the group config

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* Fix comments

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add a server configuration option.

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Appease the linter #1

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add the new server flag documentation

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Improve documentation of the new flag and configuration

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Use named parameters for clarity on the `Rule` interface

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add `initial` to the flag help

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Change the CHANGELOG area from `ruler` to `rules`

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Rename evaluation_delay to `rule_query_offset`/`query_offset` and make it a global configuration option.

Signed-off-by: gotjosh <josue.abreu@gmail.com>

E Your branch is up to date with 'origin/gotjosh/evaluation-delay'.

* more docs

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Improve wording on CHANGELOG

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Add `RuleQueryOffset` to the default config in tests in case it changes

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Update docs/configuration/recording_rules.md

Co-authored-by: Julius Volz <julius.volz@gmail.com>
Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Rename `RuleQueryOffset` to `QueryOffset` when in the group context.

Signed-off-by: gotjosh <josue.abreu@gmail.com>

* Improve docstring and documentation on the `rule_query_offset`

Signed-off-by: gotjosh <josue.abreu@gmail.com>

---------

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
Signed-off-by: gotjosh <josue.abreu@gmail.com>
Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>
Co-authored-by: Julius Volz <julius.volz@gmail.com>
2024-05-30 11:49:50 +01:00
gotjosh 1dd0bff4f1
Merge pull request #13980 from prometheus/gotjosh/restore-only-with-rule-query
Rule Manager: Only query once per alert rule when restoring alert state
2024-04-30 15:29:21 +01:00
gotjosh ccfafae36d
Rename QueryforStateSeries to QueryForStateSeries
Signed-off-by: gotjosh <josue.abreu@gmail.com>
2024-04-30 12:19:18 +01:00
George Robinson dde2e5eb73
Improve comments around resending resolved alerts (#13990)
Signed-off-by: George Robinson <george.robinson@grafana.com>
2024-04-25 14:18:50 +02:00
gotjosh 2de2fee035
Allow the result map for the series set before hand with a hint.
Signed-off-by: gotjosh <josue.abreu@gmail.com>
2024-04-24 19:10:34 +01:00
gotjosh e6dcbd2e26
bug: nil check against the series set not errors
Signed-off-by: gotjosh <josue.abreu@gmail.com>
2024-04-24 18:46:05 +01:00
gotjosh 4daaa59c08
Rule Manager: Only query once per alert rule when restoring alert state
Prometheus restores alert state between restarts and updates. For each rule, it looks at the alerts that are meant to be active and then queries the `ALERTS_FOR_STATE` series for _each_ alert within the rules.

If the alert rule has 120 instances (or series) it'll execute the same query with slightly different labels.

This PR changes the approach so that we only query once per alert rule and then match the corresponding alert that we're about to restore against the series-set. While the approach might use a bit more memory at start-up (if even?) the restore proccess is only ran once per restart so I'd consider this a big win.

This builds on top of #13974

Signed-off-by: gotjosh <josue.abreu@gmail.com>
2024-04-24 18:46:05 +01:00
suntala 44f385fd51 Support expansion of native histogram values in alert templates
Co-authored-by: Aleks Fazlieva <britishrum@users.noreply.github.com>
Signed-off-by: suntala <arati.rana@grafana.com>
2024-03-26 22:30:01 +01:00
Bryan Boreham 3716326f3f rules: call NewScratchBuilder
Need to initialize ScratchBuilder with a SymbolTable.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-02-26 11:45:25 +00:00
Marco Pracucci 5ee3fbe825
Decouple ruler dependency controller from concurrency controller
Signed-off-by: Marco Pracucci <marco@pracucci.com>
2024-02-02 10:06:37 +01:00
Oleksandr Redko fa90ca46e5 ci(lint): enable godot; append dot at the end of comments
Signed-off-by: Oleksandr Redko <Oleksandr_Redko@epam.com>
2023-10-31 19:53:38 +02:00
Arve Knudsen 6daee89e5f
Add context argument to Querier.Select (#12660)
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
2023-09-12 12:37:38 +02:00
beorn7 c0879d64cf promql: Separate Point into FPoint and HPoint
In other words: Instead of having a “polymorphous” `Point` that can
either contain a float value or a histogram value, use an `FPoint` for
floats and an `HPoint` for histograms.

This seemingly small change has a _lot_ of repercussions throughout
the codebase.

The idea here is to avoid the increase in size of `Point` arrays that
happened after native histograms had been added.

The higher-level data structures (`Sample`, `Series`, etc.) are still
“polymorphous”. The same idea could be applied to them, but at each
step the trade-offs needed to be evaluated.

The idea with this change is to do the minimum necessary to get back
to pre-histogram performance for functions that do not touch
histograms. Here are comparisons for the `changes` function. The test
data doesn't include histograms yet. Ideally, there would be no change
in the benchmark result at all.

First runtime v2.39 compared to directly prior to this commit:

```
name                                                  old time/op    new time/op    delta
RangeQuery/expr=changes(a_one[1d]),steps=1-16            391µs ± 2%     542µs ± 1%  +38.58%  (p=0.000 n=9+8)
RangeQuery/expr=changes(a_one[1d]),steps=10-16           452µs ± 2%     617µs ± 2%  +36.48%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_one[1d]),steps=100-16         1.12ms ± 1%    1.36ms ± 2%  +21.58%  (p=0.000 n=8+10)
RangeQuery/expr=changes(a_one[1d]),steps=1000-16        7.83ms ± 1%    8.94ms ± 1%  +14.21%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_ten[1d]),steps=1-16           2.98ms ± 0%    3.30ms ± 1%  +10.67%  (p=0.000 n=9+10)
RangeQuery/expr=changes(a_ten[1d]),steps=10-16          3.66ms ± 1%    4.10ms ± 1%  +11.82%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_ten[1d]),steps=100-16         10.5ms ± 0%    11.8ms ± 1%  +12.50%  (p=0.000 n=8+10)
RangeQuery/expr=changes(a_ten[1d]),steps=1000-16        77.6ms ± 1%    87.4ms ± 1%  +12.63%  (p=0.000 n=9+9)
RangeQuery/expr=changes(a_hundred[1d]),steps=1-16       30.4ms ± 2%    32.8ms ± 1%   +8.01%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=10-16      37.1ms ± 2%    40.6ms ± 2%   +9.64%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=100-16      105ms ± 1%     117ms ± 1%  +11.69%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=1000-16     783ms ± 3%     876ms ± 1%  +11.83%  (p=0.000 n=9+10)
```

And then runtime v2.39 compared to after this commit:

```
name                                                  old time/op    new time/op    delta
RangeQuery/expr=changes(a_one[1d]),steps=1-16            391µs ± 2%     547µs ± 1%  +39.84%  (p=0.000 n=9+8)
RangeQuery/expr=changes(a_one[1d]),steps=10-16           452µs ± 2%     616µs ± 2%  +36.15%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_one[1d]),steps=100-16         1.12ms ± 1%    1.26ms ± 1%  +12.20%  (p=0.000 n=8+10)
RangeQuery/expr=changes(a_one[1d]),steps=1000-16        7.83ms ± 1%    7.95ms ± 1%   +1.59%  (p=0.000 n=10+8)
RangeQuery/expr=changes(a_ten[1d]),steps=1-16           2.98ms ± 0%    3.38ms ± 2%  +13.49%  (p=0.000 n=9+10)
RangeQuery/expr=changes(a_ten[1d]),steps=10-16          3.66ms ± 1%    4.02ms ± 1%   +9.80%  (p=0.000 n=10+9)
RangeQuery/expr=changes(a_ten[1d]),steps=100-16         10.5ms ± 0%    10.8ms ± 1%   +3.08%  (p=0.000 n=8+10)
RangeQuery/expr=changes(a_ten[1d]),steps=1000-16        77.6ms ± 1%    78.1ms ± 1%   +0.58%  (p=0.035 n=9+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=1-16       30.4ms ± 2%    33.5ms ± 4%  +10.18%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=10-16      37.1ms ± 2%    40.0ms ± 1%   +7.98%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=100-16      105ms ± 1%     107ms ± 1%   +1.92%  (p=0.000 n=10+10)
RangeQuery/expr=changes(a_hundred[1d]),steps=1000-16     783ms ± 3%     775ms ± 1%   -1.02%  (p=0.019 n=9+9)
```

In summary, the runtime doesn't really improve with this change for
queries with just a few steps. For queries with many steps, this
commit essentially reinstates the old performance. This is good
because the many-step queries are the one that matter most (longest
absolute runtime).

In terms of allocations, though, this commit doesn't make a dent at
all (numbers not shown). The reason is that most of the allocations
happen in the sampleRingIterator (in the storage package), which has
to be addressed in a separate commit.

Signed-off-by: beorn7 <beorn@grafana.com>
2023-04-13 19:25:16 +02:00
Bryan Boreham b987afa7ef labels: simplify call to get Labels from Builder
It took a `Labels` where the memory could be re-used, but in practice
this hardly ever benefitted. Especially after converting `relabel.Process`
to `relabel.ProcessBuilder`.

Comparing the parameter to `nil` was a bug; `EmptyLabels` is not `nil`
so the slice was reallocated multiple times by `append`.

Lastly `Builder.Labels()` now estimates that the final size will depend
on labels added and deleted.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2023-03-22 17:05:20 +00:00
Danny Kopping df078e0a84
Merge branch 'main' into dannykopping/rule-eval
Signed-off-by: Danny Kopping <danny.kopping@grafana.com>
2023-01-26 13:10:18 +02:00
Julien Pivotto e811d14963 Add comments
Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>
2023-01-23 13:59:43 +01:00
Julien Pivotto 2c408289f8 Add stabilizing to UI
Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>
2023-01-19 11:33:54 +01:00
Julien Pivotto ce55e5074d Add 'keep_firing_for' field to alerting rules
This commit adds a new 'keep_firing_for' field to Prometheus alerting
rules. The 'resolve_delay' field specifies the minimum amount of time
that an alert should remain firing, even if the expression does not
return any results.

This feature was discussed at a previous dev summit, and it was
determined that a feature like this would be useful in order to allow
the expression time to stabilize and prevent confusing resolved messages
from being propagated through Alertmanager.

This approach is simpler than having two PromQL queries, as was
sometimes discussed, and it should be easy to implement.

This commit does not include tests for the 'resolve_delay' field.  This
is intentional, as the purpose of this commit is to gather comments on
the proposed design of the 'resolve_delay' field before implementing
tests. Once the design of the 'resolve_delay' field has been finalized,
a follow-up commit will be submitted with tests."

See https://github.com/prometheus/prometheus/issues/11570

Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>
2023-01-13 12:11:39 +01:00
Danny Kopping 72527b5f12
Refactoring for simplicity
Include labels

Signed-off-by: Danny Kopping <danny.kopping@grafana.com>
2023-01-09 11:01:46 +02:00
Danny Kopping 79300340af
Adding recording/alerting rule origin context
This will allow correlation of executed rule queries with their associated rule names and type

Signed-off-by: Danny Kopping <danny.kopping@grafana.com>
2023-01-09 11:01:24 +02:00
Bryan Boreham cdbe7f462b Update package rules for new labels.Labels type
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-12-19 15:22:09 +00:00
Ganesh Vernekar 46b26c4f09
Fix notifier relabel changing the labels of active alerts (#11427)
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
2022-10-07 20:28:17 +05:30
Cosrider bef6556ca5
delete redundant alias (#11180)
Signed-off-by: Cosrider <cosrider7@gmail.com>

Signed-off-by: Cosrider <cosrider7@gmail.com>
2022-08-31 15:50:38 +02:00
Bryan Boreham 8b863c42dd
Optimise relabeling by re-using memory (#11147)
* model/relabel: Add benchmark

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* model/relabel: re-use Builder across relabels

Saves memory allocations.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* labels.Builder: allow re-use of result slice

This reduces memory allocations where the caller has a suitable slice available.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* model/relabel: re-use source values slice

To reduce memory allocations.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Unwind one change causing test failures

Restore original behaviour in PopulateLabels, where we must not overwrite the input set.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* relabel: simplify values optimisation

Use a stack-based array for up to 16 source labels, which will be the
vast majority of cases.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* lint

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-08-19 15:27:52 +05:30
Jimmie Han a5fea2cdd0
Use atomic field avoid (*AlertingRule).mtx wait when template expanding (#10858)
* Use atomic field avoid (*AlertingRule).mtx wait when template expanding (#10703)

Signed-off-by: hanjm <hanjinming@outlook.com>
2022-07-19 12:58:37 +02:00
Matthieu MOREL ddfa9a7cc5
refactor (rules): move from github.com/pkg/errors to 'errors' and 'fmt' (#10855)
* refactor (rules): move from github.com/pkg/errors to 'errors' and 'fmt'

Signed-off-by: Matthieu MOREL <mmorel-35@users.noreply.github.com>
2022-06-17 09:54:25 +02:00
Julien Pivotto 0d94cdf107
rules: remove classic UI code (#10730)
Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>
2022-05-23 16:21:50 +02:00
Wilbert Guo 83a2e52bc2
Add SyncForState Implementation for Ruler HA (#10070)
* continuously syncing activeAt for alerts

Signed-off-by: Yijie Qin <qinyijie@amazon.com>
Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

* add import

Signed-off-by: Yijie Qin <qinyijie@amazon.com>
Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

* Refactor SyncForState and add unit tests

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

* Format code

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

* Add hook for syncForState

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

Fix go lint

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

Refactor syncForState override implementation

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

Add syncForState override func as argument to Update()

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

Fix go formatting

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

Fix circleci test errors

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

Remove overrideFunc as argument to run()

Signed-off-by: Wilbert Guo <wilbeguo@amazon.com>

* remove the syncForState

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* use the override function to decide if need to replace the activeAt or not

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fix test case

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fix format

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* Trigger build

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fixing comments

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* return the result of map of alerts instead of single one

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* upper case the QueryforStateSeries

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* use a more generic rule group post process function type

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fix indentation

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fix gofmt

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fix lint

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fixing naming

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fix comments

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* add the lastEvalTimestamp as parameter

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* fmt

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

* change funcType to func

Signed-off-by: Yijie Qin <qinyijie@amazon.com>

Co-authored-by: Yijie Qin <qinyijie@amazon.com>
Co-authored-by: Yijie Qin <63399121+qinxx108@users.noreply.github.com>
2022-03-29 02:16:46 +02:00
beorn7 c954cd9d1d Move packages out of deprecated pkg directory
This creates a new `model` directory and moves all data-model related
packages over there:
  exemplar labels relabel rulefmt textparse timestamp value

All the others are more or less utilities and have been moved to `util`:
  gate logging modetimevfs pool runtime

Signed-off-by: beorn7 <beorn@grafana.com>
2021-11-09 08:03:10 +01:00
Yijie Qin 6fce45838a
Add access function for restoration state of alerting rule (#9665) 2021-11-05 18:26:29 -04:00
Mateusz Gozdek 1a6c2283a3 Format Go source files using 'gofumpt -w -s -extra'
Part of #9557

Signed-off-by: Mateusz Gozdek <mgozdekof@gmail.com>
2021-11-02 19:52:34 +01:00
Levi Harrison d81bbe154d
Rule alerts/series limit updates (#9541)
* Add docs and do not limit inactive alerts.

Signed-off-by: Levi Harrison <git@leviharrison.dev>
2021-10-21 23:14:17 +02:00
Levi Harrison dc2f1993d8
Limit number of alerts or series produced by a rule (#9260)
* Add limit to rules

Signed-off-by: Levi Harrison <git@leviharrison.dev>
2021-09-15 09:48:26 +02:00
George Robinson 049b4f4f13
Support customization of template options in TemplateExpander (#9290)
Signed-off-by: George Robinson <george.robinson@grafana.com>
2021-09-13 17:19:08 +05:30
Levi Harrison 8c29046ab2
Remove unneeded state modifications
Signed-off-by: Levi Harrison <git@leviharrison.dev>
2021-08-20 16:42:31 -04:00
Levi Harrison b5f6f8fb36 Switched to go-kit/log
Signed-off-by: Levi Harrison <git@leviharrison.dev>
2021-06-11 12:28:36 -04:00
Levi Harrison 17ea8d006a
Added external URL access
Signed-off-by: Levi Harrison <git@leviharrison.dev>
2021-05-30 23:35:26 -04:00
Julien Pivotto 4e5b1722b3
Move away from testutil, refactor imports (#8087)
Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-10-22 11:00:08 +02:00
johncming a69a8b931f
rules: fix bug for unknown alert state. (#7599)
Signed-off-by: johncming <johncming@yahoo.com>
2020-07-17 08:39:15 +01:00
Brian Brazil 5368066b58
Give a bit more slack for alertmanager send failures. (#7228)
Fixes #5277

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
2020-05-09 05:37:46 +01:00
Tobias Guggenmos 20b1f596f6 Fix build errors in rest of prometheus
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:09:23 +01:00
Julien Pivotto 0e912faf4f
rules: Cleanup unused function alert.Duration (#6734)
The function HoldDuration and Duration did the exact same thing.

Let's only keep HoldDuration() as Duration() is more confusing.

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-02-01 07:31:37 +00:00
Julien Pivotto 2d7c8069d0 Check that rules don't contain metrics with the same labelset (#6469)
Closes #5529

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2019-12-18 12:29:35 +00:00
AllenZMC 5c2c9a03e9 fix word 'consequentally' to 'consequently' (#5827)
Signed-off-by: czm <zhongming.chang@daocloud.io>
2019-08-03 14:56:58 +01:00
Bjoern Rabenstein 38d518c0fe Rework #5009 after comments
Signed-off-by: Bjoern Rabenstein <bjoern@rabenste.in>
2019-04-17 01:40:10 +02:00
Sylvain Rabot 335a34486e Add external labels to template expansion
This affects the expansion of templates in alert labels and
annotations and console templates.

Signed-off-by: Sylvain Rabot <sylvain@abstraction.fr>
2019-04-17 01:40:10 +02:00
Tariq Ibrahim 8fdfa8abea refine error handling in prometheus (#5388)
i) Uses the more idiomatic Wrap and Wrapf methods for creating nested errors.
ii) Fixes some incorrect usages of fmt.Errorf where the error messages don't have any formatting directives.
iii) Does away with the use of fmt package for errors in favour of pkg/errors

Signed-off-by: tariqibrahim <tariq181290@gmail.com>
2019-03-26 00:01:12 +01:00
Simon Pasquier f678e27eb6
*: use latest release of staticcheck (#5057)
* *: use latest release of staticcheck

It also fixes a couple of things in the code flagged by the additional
checks.

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* Use official release of staticcheck

Also run 'go list' before staticcheck to avoid failures when downloading packages.

Signed-off-by: Simon Pasquier <spasquie@redhat.com>
2019-01-04 14:47:38 +01:00
AixesHunter fb8479a677 Variable 'labels' collides with imported package name (#5012)
Signed-off-by: aixeshunter <aixeshunter@gmail.com>
2018-12-19 09:44:03 +00:00
Ben Kochie c6399296dc
Fix spelling/typos (#4921)
* Fix spelling/typos

Fix spelling/typos reported by codespell/misspell.
* UK -> US spelling changes.

Signed-off-by: Ben Kochie <superq@gmail.com>
2018-11-27 17:44:29 +01:00