ZooKeeper module: Adapt to ZooKeeper 3.6+ `mntr` response fields' changes. #30068

pfcoperez · 2022-01-27T17:34:21Z

What does this PR do?

This PR tries to tackle the compatibility issues that arise from trying to use the ZooKeeper metrics beats module with recent versions of this service: 3.6 and 3.7 majors.

Since ZooKeeper 3.6, some response to mntr 4lw commands requests have changed their implicit type from integers to floats. Fields like zk_avg_latency, zk_min_latency and zk_max_latency are some examples of this.

Additionally, zk_followers has been replaced by zk_learners.

This PR adds compatibility with these changes while not breaking pre ZK 3.6 ones.

Why is it important?

It is key for Elastic cloud operations to have these changes in beats. This can surely be extrapolated to other users which might wonder why certain fields are not longer ingested after having upgraded to any of the most recent ZooKeeper majors.

Checklist

My code follows the style guidelines of this project
I have commented my code, particularly in hard-to-understand areas
I have made corresponding changes to the documentation
I have made corresponding change to the default configuration files
I have added tests that prove my fix is effective or that my feature works
I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Author's Checklist

[ ]

How to test this PR locally

cd metricbeat
MODULE=zookeeper mage -v pythonIntegTest

Related issues

Closes: #30066

Use cases

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mergify · 2022-01-27T17:35:09Z

This pull request does not have a backport label. Could you fix it @pfcoperez? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

backport-v./d./d./d is the label to automatically backport to the 7./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

elasticmachine · 2022-01-27T18:20:06Z

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elasticmachine · 2022-01-28T09:36:45Z

Pinging @elastic/siem (Team:SIEM)

elasticmachine · 2022-01-28T10:05:24Z

Pinging @elastic/integrations (Team:Integrations)

ruflin · 2022-01-28T10:05:54Z

I assume this will need backport to 8.0 and 7.17, not 7.12?

metricbeat/module/zookeeper/mntr/data.go

sayden · 2022-01-28T10:19:47Z

7.12 too so Cloud can do an progressive upgrade

sayden · 2022-01-28T10:41:27Z

All right I'll have to generate a switch in the code flow depending on the zookeeper version

jsoriano

7.12 too so Cloud can do an progressive upgrade

If backported to 7.12, it should be backported first to all the branches in between (7.13, 7.14...), to avoid someone using the fixed 7.12 version finding the problem again when upgrading to one of the others.

In any case remember that very probably there is not going to be any other 7.12 release, so this would only fix the issue for custom builds.

metricbeat/module/zookeeper/mntr/data.go

ruflin · 2022-01-31T08:18:06Z

There will not be any future 7.12 release. Even if we backport it, it never becomes available as a release. To get the change, Cloud has to go to 7.16, likely 7.17. @pfcoperez Is this an issue?

pfcoperez · 2022-01-31T12:20:17Z

There will not be any future 7.12 release. Even if we backport it, it never becomes available as a release. To get the change, Cloud has to go to 7.16, likely 7.17. @pfcoperez Is this an issue?

I think this might be an issue for ECE, would it be possible to do a minor official release?

pfcoperez · 2022-01-31T12:21:32Z

I'd like to include a run of the ITs with ZK 3.7 (in addition to the current 3.5). Would you mind pointing me into the steps to do it? 🙇

ruflin · 2022-02-02T07:57:59Z

Here is the compose file that spins up the environment: https://github.com/elastic/beats/blob/master/metricbeat/module/zookeeper/docker-compose.yml and the docker file: https://github.com/elastic/beats/blob/master/metricbeat/module/zookeeper/_meta/Dockerfile Interesting enough, it already has a variable for the version. @jsoriano I remember some services we tests multiple versions, do you have an example as reference?

jsoriano · 2022-02-02T11:37:32Z

I remember some services we tests multiple versions, do you have an example as reference?

Yep, we have support in the python tests. Take a look for example to the mysql or redis modules. You need these things:

Add the @metricbeat.parameterized_with_supported_versions decorator to the test class in test_zookeeper.py.
Parameterize the version or other variants in the docker compose file for zookeeper. I think that this is already done, but consider reviewing default values there, as they are the ones used by Go tests.
Add a _meta/supported-versions.yml file, with each one of the versions to test, take a look to the redis or mysql ones as example.

You can then run the python tests for this module with MODULE=zookeeper mage -v pythonIntegTest.

ruflin · 2022-02-02T12:15:49Z

@sayden As a follow up, we should also update the compatibility of the zookeeper package: https://github.com/elastic/integrations/tree/main/packages/zookeeper

pfcoperez · 2022-02-02T14:05:10Z

I remember some services we tests multiple versions, do you have an example as reference?

Yep, we have support in the python tests. Take a look for example to the mysql or redis modules. You need these things:

* Add the `@metricbeat.parameterized_with_supported_versions` decorator to the test class in `test_zookeeper.py`.

* Parameterize the version or other variants in the docker compose file for zookeeper. I think that this is already done, but consider reviewing default values there, as they are the ones used by Go tests.

* Add a `_meta/supported-versions.yml` file, with each one of the versions to test, take a look to the [redis](https://github.com/elastic/beats/blob/dd24764c4a9ff57b52d0289f9647fee8a5c9358e/metricbeat/module/redis/_meta/supported-versions.yml) or [mysql](https://github.com/elastic/beats/blob/dd24764c4a9ff57b52d0289f9647fee8a5c9358e/metricbeat/module/mysql/_meta/supported-versions.yml) ones as example.

You can then run the python tests for this module with MODULE=zookeeper mage -v pythonIntegTest.

Thank you @jsoriano ! I'll try to do it. I'll get back to you if I don't manage to.

pfcoperez · 2022-02-03T16:01:27Z

@jsoriano Thanks to your indications, in 8c9c62cbbf1f39d766b68349454d31ffb6d831eb, I've added the validation against ZooKeeper 3.6 and 3.7, in addition to the current 3.5.

📝 Note that I've changed the source image for ZooKeeper to the official ones: https://hub.docker.com/_/zookeeper Is that OK?

sayden

All right! Thank you very much for the help!

pfcoperez · 2022-02-09T14:33:13Z

@jsoriano @sayden Thanks a lot for your thorough reviews and insightful help.

In d034056 I've added UTs, may I ask you to please take a look? If you find them OK i'll just merge.

jsoriano

Thanks for adding unit tests! I have added some suggestions there, and I will leave the final word to @sayden 🙂

metricbeat/module/zookeeper/mntr/mntr_test.go

…ding them from test data files

jsoriano

LGTM

jsoriano · 2022-02-10T14:23:14Z

/test

sayden

Thanks for all the effort!

…nges. (#30068) (cherry picked from commit 3a311f1)

…r` response fields' changes. (#30360) (cherry picked from commit 3a311f1) Co-authored-by: Pablo Francisco Pérez Hidalgo <[email protected]> Co-authored-by: Jaime Soriano Pastor <[email protected]>

…nges. (#30068) (#30359) (cherry picked from commit 3a311f1) Co-authored-by: Pablo Francisco Pérez Hidalgo <[email protected]> Co-authored-by: Jaime Soriano Pastor <[email protected]>

…tr` response fields' changes. (#30358) (cherry picked from commit 3a311f1) Co-authored-by: Pablo Francisco Pérez Hidalgo <[email protected]> Co-authored-by: Jaime Soriano Pastor <[email protected]>

…-29710 * '8.1' of github.com:elastic/beats: (51 commits) refactor pushDockerImages (#30414) (#30624) ci: add windows-2022 in the extended meta-stage (#30528) (#30630) Curate k8s testing versions to only keep the actively maintained (#30619) (#30625) [8.1](backport #30355) Add Beats upgrade docs for 8.0 (#30612) Remove references to gcp from the Functionbeat docs (#30579) (#30609) x-pack/auditbeat/module/system/socket: defend against exec with zero arguments (#30586) (#30597) [MySQL Enterprise] Adding default paths values to manifest.yml (#30598) (#30604) metricbeat - fix elasticsearch and kibana integration tests failures in 8.0 (#30566) (#30594) Install gawk as a replacement for mawk in Docker containers. (#30452) (#30465) [Filebeat] Remove RecordedFuture dataset from Threat Intel module (#30564) (#30568) Adjust the documentation of `backoff` options in filestream input (#30552) (#30557) packetbeat/beater: help the GC clean up the Npcap installer if it's not used (#30513) (#30546) Osquerybeat: Add install verification for osquerybeat (#30388) (#30404) Update docker/distribution to 2.8.0 (#30462) (#30540) Add `parsers` examples to `filestream` reference configuration (#30529) (#30537) [8.1](backport #30068) ZooKeeper module: Adapt to ZooKeeper 3.6+ `mntr` response fields' changes. (#30360) [8.1](backport #30512) Switch skip to use `CI` (#30525) Forward-port 8.0.1 changelog to 8.1 (#30517) packetbeat/beater: don't attempt to install npcap when already installed (#30509) (#30511) Add drop and explicit tests to avoid duplicate ingest of elasticsearch logs (#30440) (#30488) ...

pfcoperez added the bug label Jan 27, 2022

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sayden mentioned this pull request Feb 3, 2022

Upgrade compatibility of Zookeeper to 3.7 elastic/integrations#2639

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PR Comments: Make code more idiomatic

9b40f02

mntr unit tests

d034056

pfcoperez force-pushed the fix/30066/zookeeper/recent_versions_compatibility branch from b8bee51 to d034056 Compare February 9, 2022 14:39

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pfcoperez added 3 commits February 10, 2022 10:59

PR comments: UT, Test mntr samples against expected values

77212ad

PR Suggestions: Make use t.Run to group all tests for a given version

45b9b24

PR Suggestions: Embed mntr samples as string variable contents by loa…

e4c96c7

…ding them from test data files

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sayden merged commit 3a311f1 into elastic:main Feb 11, 2022

mergify bot pushed a commit that referenced this pull request Feb 11, 2022

ZooKeeper module: Adapt to ZooKeeper 3.6+ mntr response fields' cha…

893342f

…nges. (#30068) (cherry picked from commit 3a311f1)

mergify bot mentioned this pull request Feb 11, 2022

[7.17](backport #30068) ZooKeeper module: Adapt to ZooKeeper 3.6+ mntr response fields' changes. #30358

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ZooKeeper module: Adapt to ZooKeeper 3.6+ mntr response fields' cha…

069db49

…nges. (#30068) (cherry picked from commit 3a311f1)

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[8.0](backport #30068) ZooKeeper module: Adapt to ZooKeeper 3.6+ mntr response fields' changes. #30359

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ZooKeeper module: Adapt to ZooKeeper 3.6+ mntr response fields' cha…

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…nges. (#30068) (cherry picked from commit 3a311f1)

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[8.1](backport #30068) ZooKeeper module: Adapt to ZooKeeper 3.6+ mntr response fields' changes. #30360

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[Release] Update test environments for 8.0.1 #28659

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pfcoperez deleted the fix/30066/zookeeper/recent_versions_compatibility branch March 8, 2022 10:50

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ZooKeeper module: Adapt to ZooKeeper 3.6+ `mntr` response fields' changes. #30068

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ZooKeeper module: Adapt to ZooKeeper 3.6+ `mntr` response fields' changes. #30068

ZooKeeper module: Adapt to ZooKeeper 3.6+ `mntr` response fields' changes. #30068

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