feat: Linux service management

[jdstrand]

• feat: add influxdb3-launcher as well as systemd unit and SysV init files
• chore: add preliminary influxdb3-core.conf (toml)
• feat(ci): add build_and_persist_packages pipeline parameter
• fix: updates for config.yaml for package linters
• chore: update .gitignore to include artifacts/
• fix(rh): fix maintainer scripts and config for RPM
• chore: remove .keepdir files from populated directories
• fix: add pre-uninstall and move stop/disable of service to it
• fix(launcher): add missing config items

This was not a cherry-pick from influxdb_pro since some files are named differently, etc. Here is what I did:

1. git show > /path/to/pro.diff from influxdb_pro
2. copied /path/to/pro.diff to /path/to/pro-clean.diff and pulled out changes to .circleci/config.yml, .circleci/packages/config.yaml and .gitignore
3. cat /path/to/pro-clean.diff | patch -p1 (this was clean)
4. git mv .circleci/packages/influxdb3/fs/lib/systemd/system/influxdb3-enterprise.service .circleci/packages/influxdb3/fs/lib/systemd/system/influxdb3-core.service and update .circleci/packages/influxdb3/fs/lib/systemd/system/influxdb3-core.service for core
5. git mv .circleci/packages/influxdb3/fs/usr/share/influxdb3/influxdb3-enterprise.conf .circleci/packages/influxdb3/fs/usr/share/influxdb3/influxdb3-core.conf and pull out enterprise-specific config and update a few things for s/enterprise/core/
6. manually apply changes to .circleci/config.yml, .circleci/packages/config.yaml and .gitignore from /path/to/pro.diff
7. apply as a single commit, then do git show > /path/to/core.diff, then compare (eg, meld /path/to/pro.diff /path/to/core.diff)

Testing

Test	Ubuntu 24.04	Ubuntu 14.04	Debian 12	Rocky 10	Rocky 8	AL 2
install/remove cleans up	✅	✅	✅	✅	✅	✅
install enables but doesn't start db[1]	✅	✅	✅	✅	✅	✅
install/config/start/remove cleans up[2]	✅	✅	✅	✅	✅	✅
install Ent with Core blocked	✅	✅	✅	✅	✅	✅
upgrade Core to Core[3]	✅	✅	✅	✅	✅	✅
upgrade Core to Ent[4]	✅	✅	✅	✅	✅	✅
downgrade Ent to Core blocked[5]	✅	✅	✅	✅	✅	✅
create db/write/query	✅	✅	✅	✅	✅	✅
create db/sandbox_verify.py[6]	✅	✅	✅	✅	✅ [7]	✅
notifier plugin via API[8]	✅	✅	✅	✅	✅	✅
create db/write/query via explorer[9]	✅	⬜	✅	✅	✅	⬜
system_metrics plugin via Explorer	✅	⬜	✅	✅	✅	⬜
downsampler plugin via API	✅	⬜	✅	✅	✅	⬜

• [1] expected Unknown lvalue on AL2 and Rocky 8. AL2 has expected `Failed to
• parse protect system value, ignoring: strict. Tested with systemctl status influxdb3-core`
• [2] cleanup properly stops the server proces, removes files and leaves data in /var/lib/influxdb3 and configuration in /etc/influxdb3
• [3] server restarted (new pid)
• [4] launcher logs messages
• [5] install enterprise, start it, remove enterprise, install core, expected E: Cannot downgrade from InfluxDB 3 Enterprise to Core via journalctl --no-pager -u influxdb3-core after start (and STDIN with sysv init script)
• [6] script runs everywhere. Expected 'FAIL's on Ubuntu 14.04, AL2 and Rocky 8 due to lack of systemd features.
• [7] 'Func_https' failure on Rocky 8 is CERTIFICATE_VERIFY_FAILED. This requires the unit to be started with SSL_CERT_FILE=/etc/pki/tls/certs/ca-bundle.crt. Will fix in launcher
• [8] installed via influxdb3 create trigger --plugin-filename gh:influxdata/...
• [9] create/list/delete databases, list tokens, query databases, write sample data and query them, create dashboard, browse plugins, install system_metrics

[praveen-influx]

🚢