qryn VS systemd

Thanks for mentioning qryn! We are a non-corporate alternative and feature full ingestion compatibility with DataDog (including Cloudflare emitters, etc), Loki, Prometheus, Tempo, Elastic & others for both on-prem (https://qryn.dev) and Cloud (https://qryn.cloud) deployments, without the killer price tag.

Note: in qryn s3/r2 are as close to /dev/null as it gets!

qryn and vector get along very well! We use it all the time for testing and developing qryn and qryn.cloud and most of our users love it! But we're just as compatible with Loki/LogQL, Influx protocol for metrics and logs, Elastic Bulk, Prometheus for metrics, opentelemetry for everything... and more coming!

Feel free to open an issue on our repository if you end up trying it and/or would like us to help out!

https://qryn.dev

> *it would be nice to use ClickHouse as a Prometheus backend*

Well... that's already possible and it works great! As you might know https://qryn.dev turns ClickHouse into a powerful Prometheus *remote_write* backend and the GO/cloud version supports full PromQL queries off ClickHouse transparently (the JS/Node version transpiles to LogQL instead) and from a performance point of view its well on par with Prometheus, Mimir and Victoriametrics in our internal benchmarks (including Clickhouse as part of the resource set) with millions of inserts/s and broad client compatibility. Same for Logs (LogQL) and Traces (Tempo)

Disclaimer: I work on qryn

Thanks for mentioning our project! qryn (formerly cloki) is currently more focused on the polyglot factor and trying to unify logs, metrics and telemetry on a single stateless platform, easy to scale without hundreds of services and moving parts. At this stage, its a lightweight Grafana Cloud alternative just requiring clickhouse - no sidecar databases, redis, or plugins needed, and no new query languages or rules to learn. Latest info is at https://qryn.dev

cloki can be used to read metrics out of any CH table so it should work fine.

we also just introduced experimental support for ingesting OTLP/ZIPKIN spans and a tempo-compatible API in cloki, looking for testers to validate this feature:

https://github.com/lmangani/cLoki/wiki/Tempo-Tracing#clickho...

Internally trace spans are stored as tagged JSON logs, meaning they are available from both Loki and Tempo APIs and can be used from pretty much any visualization, too!

There's also cLoki. It's a new project that puts a Loki gateway over a ClickHouse backend store. We're looking at it and plan a presentation from the author(s) at the next ClickHouse SF Bay Area Meetup.

https://github.com/lmangani/cLoki

No, the OP was not sent any harassment, the OP _did_ the harassment as it can be seen in the tweets. I mean, they are right there, just click on the links you shared. One of the OP's followers even openly called for the assassination of the project maintainer, and you have the galls to defend him? This is truly deranged stuff.

And again, there is no "vulnerability", there is simply a person that doesn't know how Linux works and has learned something new. Which again it's fine, nobody knows everything and we all learn new things everyday, it's just that normal and sensible people don't use that to make grand claims on social media and start harassment campaigns culminating in death threats.

Professional security researchers responsibly report real issues using the appropriate channels, such as defined at: https://github.com/systemd/systemd/security/policy this is not the work of a researcher, this is a grifter looking for self-promotion on social media.

> 3. even `adduser` will not allow it by default

5. useradd does allow it (as noted in a comment). 6. Local users are not the only source, there things like LDAP and AD.

7. POSIX allows it:

* https://github.com/systemd/systemd/issues/6237#issuecomment-...

> I for one love to type out 13 extra characters

FWIW, systemd is normally pretty good at providing autocomplete suggestions, so even if you don't want to set up an alias you'll probably just have to type `--b ` to set it.

> I wonder what random ASCII escape sequences we can send.

According to the man page source[0]:

> The color specified should be an ANSI X3.64 SGR background color, i.e. strings such as `40`, `41`, …, `47`, `48;2;…`, `48;5;…`

and a link to the relevant Wikipedia page[1]. Given systemd's generally decent track record wrt defects and security issues, and the simplicity of valid colour values, I expect there's a fairly robust parameter verifier in there.

In fact, given the focus on starting the elevated command in a highly controlled environment, I'd expect the colour codes to be output to the originating terminal, not forwarded to the secure pty. That way, the only thing malformed escapes can affect is your own process, which you already have full control over anyway.

(Happy to be shown if that's a mistaken expectation though.)

[0] https://github.com/systemd/systemd/blob/main/man/run0.xml

[1] https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_G...

bash & zsh are supported by upstream: https://github.com/systemd/systemd/tree/main/shell-completio...

the right person to replace sudo, not: https://github.com/systemd/systemd/issues/6237

PS: https://pwnies.com/systemd-bugs/

https://github.com/systemd/systemd/issues/32028#issuecomment...

There are some very compelling arguments made there if you care to read them

Maybe it was because you weren't pointing out anything new?

There was a pull request to stop linking libzma to systemd before the attack even took place

https://github.com/systemd/systemd/pull/31550

This was likely one of many things that pushed the attackers to work faster, and forced them into making mistakes.

The PR for changing compression libraries to use dlopen() was opened several weeks before the xz-utils backdoor was revealed.

https://github.com/systemd/systemd/pull/31550