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| [[development-es-snapshots]] | ||
| === Daily Elasticsearch Snapshots | ||
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| For local development and CI, Kibana, by default, uses Elasticsearch snapshots that are built daily when running tasks that require Elasticsearch (e.g. functional tests). | ||
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| A snapshot is just a group of tarballs, one for each supported distribution/architecture/os of Elasticsearch, and a JSON-based manifest file containing metadata about the distributions. | ||
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| https://ci.kibana.dev/es-snapshots[A dashboard] is available that shows the current status and compatibility of the latest Elasticsearch snapshots. | ||
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| ==== Process Overview | ||
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| 1. Elasticsearch snapshots are built for each current tracked branch of Kibana. | ||
| 2. Each snapshot is uploaded to a public Google Cloud Storage bucket, `kibana-ci-es-snapshots-daily`. | ||
| ** At this point, the snapshot is not automatically used in CI or local development. It needs to be tested/verified first. | ||
| 3. Each snapshot is tested with the latest commit of the corresponding Kibana branch, using the full CI suite. | ||
| 4. After CI | ||
| ** If the snapshot passes, it is promoted and automatically used in CI and local development. | ||
| ** If the snapshot fails, the issue must be investigated and resolved. A new incompatibility may exist between Elasticsearch and Kibana. | ||
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| ==== Using the latest snapshot | ||
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| When developing locally, you may wish to use the most recent Elasticsearch snapshot, even if it's failing CI. To do so, prefix your commands with the follow environment variable: | ||
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| ["source","bash"] | ||
| ----------- | ||
| KBN_ES_SNAPSHOT_USE_UNVERIFIED=true | ||
| ----------- | ||
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| You can use this flag with any command that downloads and runs Elasticsearch snapshots, such as `scripts/es` or the FTR. | ||
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| For example, to run functional tests with the latest snapshot: | ||
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| ["source","bash"] | ||
| ----------- | ||
| KBN_ES_SNAPSHOT_USE_UNVERIFIED=true node scripts/functional_tests_server | ||
| ----------- | ||
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| ===== For Pull Requests | ||
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| Currently, there is not a way to run your pull request with the latest unverified snapshot without a code change. You can, however, do it with a small code change. | ||
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| 1. Edit `Jenkinsfile` in the root of the Kibana repo | ||
| 2. Add `env.KBN_ES_SNAPSHOT_USE_UNVERIFIED = 'true'` at the top of the file. | ||
| 3. Commit the change | ||
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| Your pull request should then use the latest snapshot the next time that it runs. Just don't merge the change to `Jenkinsfile`! | ||
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| ==== Google Cloud Storage buckets | ||
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| ===== kibana-ci-es-snapshots-daily | ||
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| This bucket stores snapshots that are created on a daily basis, and is the primary location used by `kbn-es` to download snapshots. | ||
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| Snapshots are automatically deleted after 10 days. | ||
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| The file structure for this bucket looks like this: | ||
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| * `<version>/manifest-latest.json` | ||
| * `<version>/manifest-latest-verified.json` | ||
| * `<version>/archives/<unique id>/*.tar.gz` | ||
| * `<version>/archives/<unique id>/*.tar.gz.sha512` | ||
| * `<version>/archives/<unique id>/manifest.json` | ||
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| ===== kibana-ci-es-snapshots-permanent | ||
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| This bucket stores only the most recently promoted snapshot for each version. Old snapshots are only deleted when new ones are uploaded. | ||
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| This bucket serves as permanent snapshot storage for old branches/versions that are no longer being built. `kbn-es` checks the daily bucket first, followed by this one if no snapshots were found. | ||
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| The file structure for this bucket looks like this: | ||
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| * `<version>/*.tar.gz` | ||
| * `<version>/*.tar.gz.sha512` | ||
| * `<version>/manifest.json` | ||
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| ==== How snapshots are built, tested, and promoted | ||
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| Each day, a https://kibana-ci.elastic.co/job/elasticsearch+snapshots+trigger/[Jenkins job] runs that triggers Elasticsearch builds for each currently tracked branch/version. This job is automatically updated with the correct branches whenever we release new versions of Kibana. | ||
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| ===== Build | ||
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| https://kibana-ci.elastic.co/job/elasticsearch+snapshots+build/[This Jenkins job] builds the Elasticsearch snapshots and uploads them to GCS. | ||
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| The Jenkins job pipeline definition is https://github.com/elastic/kibana/blob/master/.ci/es-snapshots/Jenkinsfile_build_es[in the kibana repo]. | ||
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| 1. Checkout Elasticsearch repo for the given branch/version. | ||
| 2. Run `./gradlew -p distribution/archives assemble --parallel` to create all of the Elasticsearch distributions. | ||
| 3. Create a tarball for each distribution. | ||
| 4. Create a manifest JSON file containing info about the distribution, as well as its download URL. | ||
| 5. Upload the tarballs and manifest to a unique location in the GCS bucket `kibana-ci-es-snapshots-daily`. | ||
| ** e.g. `<version>/archives/<unique id>` | ||
| 6. Replace `<version>/manifest-latest.json` in GCS with this newest manifest. | ||
| ** This allows the `KBN_ES_SNAPSHOT_USE_UNVERIFIED` flag to work. | ||
| 7. Trigger the verification job, to run the full Kibana CI test suite with this snapshot. | ||
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| ===== Verification and Promotion | ||
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| https://kibana-ci.elastic.co/job/elasticsearch+snapshots+verify/[This Jenkins job] tests the latest Elasticsearch snapshot with the full Kibana CI pipeline, and promotes if it there are no test failures. | ||
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| The Jenkins job pipeline definition is https://github.com/elastic/kibana/blob/master/.ci/es-snapshots/Jenkinsfile_verify_es[in the kibana repo]. | ||
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| 1. Checkout Kibana and set up CI environment as normal. | ||
| 2. Set the `ES_SNAPSHOT_MANIFEST` env var to point to the latest snapshot manifest. | ||
| 3. Run CI (functional tests, integration tests, etc). | ||
| 4. After CI | ||
| ** If there was a test failure or other build error, send out an e-mail notification and stop. | ||
| ** If there were no errors, promote the snapshot. | ||
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| Promotion is done as part of the same pipeline: | ||
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| 1. Replace the manifest at `kibana-ci-es-snapshots-daily/<version>/manifest-latest-verified.json` with the manifest from the tested snapshot. | ||
| ** At this point, the snapshot has been promoted and will automatically be used in CI and in local development. | ||
| 2. Replace the snapshot at `kibana-ci-es-snapshots-permanent/<version>/` with the tested snapshot by copying all of the tarballs and the manifest file. |
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