server: add server info metrics for DBasS (#9582)

[ti-srebot]

cherry-pick #9582 to release-4.0
You can switch your code base to this Pull Request by using git-extras:

# In tikv repo:
git pr https://github.com/tikv/tikv/pull/9591

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/tikv.git pr/9591:release-4.0-0fe01b8da4b8

---

Signed-off-by: iosmanthus myosmanthustree@gmail.com

What problem does this PR solve?

This pull request adds server info metrics via a GaugeVec in format: (version, githash) -> startup_ts.

Problem Summary:

Related changes

• Need to cherry-pick to the release branch

Check List

Tests

• Manual test (add detailed scripts or steps below)

http get 'http://localhost:9090/api/datasources/proxy/1/api/v1/query_range?query=tikv_server_info&start=1611738330&end=1611738465&step=15'

{
    "data": {
        "result": [
            {
                "metric": {
                    "__name__": "tikv_server_info",
                    "hash": "None",
                    "instance": "127.0.0.1:20180",
                    "job": "tikv",
                    "version": "5.0.0-rc.x"
                },
                "values": [
                    [
                        1611738360,
                        "1611738218"
                    ],
                    [
                        1611738375,
                        "1611738218"
                    ],
                    [
                        1611738390,
                        "1611738218"
                    ],
                    [
                        1611738405,
                        "1611738218"
                    ]
                ]
            }
        ],
        "resultType": "matrix"
    },
    "status": "success"
}

Side effects

• Performance regression
  • Consumes more CPU
  • Consumes more MEM
• Breaking backward compatibility

Release note

• server: add server info metrics for DBasS

[ti-srebot]

/run-all-tests

[ti-srebot]

@iosmanthus please accept the invitation then you can push to the cherry-pick pull requests.
https://github.com/ti-srebot/tikv/invitations

[breezewish]

/lgtm

[zhongzc]

/lgtm

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• breeswish
• zhongzc

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by writing /lgtm in a comment.
Reviewer can cancel approval by writing /lgtm cancel in a comment.

[zhongzc]

/merge

[ti-chi-bot]

@zhongzc: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

If you have any questions about the PR merge process, please refer to pr process.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 36c5c24

[NingLin-P]

/merge

[ti-chi-bot]

@NingLin-P: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

If you have any questions about the PR merge process, please refer to pr process.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

@NingLin-P: /merge is only allowed for the committers in list.

In response to this:

/merge

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

@ti-srebot: Your PR has out-of-dated, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.