hey @User welcome to the community 👋 what brings you here ? Prachi is a long term OSS contributor, contributing and serving as admin at Google Summer of Code for AnitaB.org Grace Hopper community and currently solving scalable problems at Microsoft 🚀 Glad to have you here.

One of the best ways to learn about a domain is to learn how the top companies have done it. In the same spirit, we compiled a list of 30+ articles on observability and SRE best practices from top companies like Uber, Netflix - https://signoz.io/learn/user-stories Let us know what you think? Are there any other such items you would like to learn more about?

Hi SigNoz community. Really cool/interesting what you guys are building! I have a question about deployment architecture. We run mainly on Kubernetes and would like to try and keep the overall footprint of our deployments pretty small. Kafka + Druid seem a bit heavy for where we are right now, so I’m wondering if deploying Clickhouse would make more sense?

2021-11-09T10:00:31.999Z info service/application.go:281 Starting otelcontribcol... {"Version": "latest", "NumCPU": 8} 2021-11-09T10:00:32.038Z info service/application.go:341 Using memory ballast {"MiBs": 683} 2021-11-09T10:00:32.038Z info service/application.go:189 Setting up own telemetry... 2021-11-09T10:00:32.279Z info service/telemetry.go:98 Serving Prometheus metrics {"address": ":8888", "level": 0, "service.instance.id": "b463293e-a637-4a22-8c17-70eee2721250"} 2021-11-09T10:00:32.279Z info service/application.go:224 Loading configuration... 2021-11-09T10:00:32.329Z info service/application.go:240 Applying configuration... 2021-11-09T10:00:32.330Z info builder/exporters_builder.go:274 Exporter was built. {"kind": "exporter", "exporter": "prometheus"} Error: cannot build pipelines: cannot build builtExporters: error creating clickhouse exporter: error connecting to primary db: dial tcp: lookup clickhouse on 127.0.0.11:53: server misbehaving 2021/11/09 10:00:32 application run finished with error: cannot build pipelines: cannot build builtExporters: error creating clickhouse exporter: error connecting to primary db: dial tcp: lookup clickhouse on 127.0.0.11:53: server misbehaving

Hi All, just looking at this for the first time and found a website issue. On page https://signoz.io/docs/instrumentation/overview/ the link for Go (and it’s Go, not GoLang btw) points to the page for JAVA.

Though: The sample on the Go page isn’t happy. go.opentelemetry.io/otel/exporters/otlp imports go.opentelemetry.io/otel/sdk/metric/controller/basic imports go.opentelemetry.io/otel/metric/registry: module go.opentelemetry.io/otel/metric@latest found (v0.24.0), but does not contain package go.opentelemetry.io/otel/metric/registry

@User - installing Signoz into a virtual machine (instead of trying to run in a separated Docker network namespace) worked out. Thank you for your help

Now, I can see that error originating from clickhouse’s error log:

2021.11.18 20:10:51.612064 [ 37 ] {} <Error> DatabaseAtomic (system): 
	std::exception. Code: 1001, 
	type: std::__1::__fs::filesystem::filesystem_error, 
	e.what() = filesystem error: in create_directory_symlink: 
		Operation not permitted [/var/lib/clickhouse/store/f2e/f2e32bce-a837-45d6-b2e3-2bcea83785d6/] [/var/lib/clickhouse/metadata/system], 
...
2021.11.18 20:11:24.047147 [ 280 ] {} <Error> void DB::SystemLog<DB::QueryLogElement>::flushImpl(const std::vector<LogElement> &, uint64_t) [LogElement = DB::QueryLogElement]: Code: 243. DB::Exception: Cannot reserve 1.00 MiB, not enough space. (NOT_ENOUGH_SPACE), Stack trace (when copying this message, always include the lines below):
...
2021.11.18 20:11:31.552803 [ 280 ] {} <Error> void DB::SystemLog<DB::QueryLogElement>::flushImpl(const std::vector<LogElement> &, uint64_t) [LogElement = DB::QueryLogElement]: Code: 243. DB::Exception: Cannot reserve 1.00 MiB, not enough space. (NOT_ENOUGH_SPACE), Stack trace (when copying this message, always include the lines below):
...
2021.11.18 20:11:37.507738 [ 427 ] {395539ae-dfc3-4cfe-bec4-7b464eb1c7a2} <Error> executeQuery: Code: 60. DB::Exception: Table default.signoz_spans doesn't exist. (UNKNOWN_TABLE) (version 21.11.4.14 (official build)) (from 172.20.0.5:52302) (in query: INSERT INTO signoz_spans (timestamp, traceID, model) VALUES ), Stack trace (when copying this message, always include the lines below):
...
2021.11.18 20:11:37.507884 [ 427 ] {395539ae-dfc3-4cfe-bec4-7b464eb1c7a2} <Error> TCPHandler: Code: 60. DB::Exception: Table default.signoz_spans doesn't exist. (UNKNOWN_TABLE), Stack trace (when copying this message, always include the lines below):
...
2021.11.18 20:11:37.520256 [ 427 ] {6346a669-9a67-4b7d-a3ee-0b135655f01f} <Error> TCPHandler: Code: 243. DB::Exception: Cannot reserve 1.00 MiB, not enough space. (NOT_ENOUGH_SPACE), Stack trace (when copying this message, always include the lines below):

I have accessed the container and tried to create the symlink manually, and indeed I get the same error in the command line:

# ln -s /var/lib/clickhouse/store/f2e/f2e32bce-a837-45d6-b2e3-2bcea83785d6 /var/lib/clickhouse/metadata/system
ln: failed to create symbolic link '/var/lib/clickhouse/metadata/system': Operation not permitted

hi ,i want to know how can i deploy in k8s with helm and exist clickhouse

👋 Hi everyone!

Hello everyone

Would love to learn what got you interested in the project

👋 Hi everyone!This is Shivam Tyagi ,UG @NIT Patna. Looking forward to help with my contributions

Hello 👋 I am Siddhant, a Student Developer pursuing my bachelors in Computer Science from India. I am an Open Source & Full Stack Developer ( DevOps + Frontend ). More About me: https://github.com/siddhant-k-code/ Connect with me: https://twitter.com/Siddhant_K_code Looking forward to Starting working with SigNoz Engineers.

As part of my Github externship, I was interested in contributing to Signoz. I am presently working on a proposal for the same. I have a few ideas I would like to discuss with the mentors. I was thinking about the already allocated ideas. I have been working around Kubernetes and Golang for three months now. I have been developing projects in it at my internship. I believe my knowledge of DevOps and skills are relevant to your project.

hey @User welcome to SigNoz community 👋 What are your areas on interest

Surprised and delighted to see SigNoz mentioned in the latest Bain India SaaS report 🎉 - Thanks to the community for your contributions and support 🙏 Full report - https://www.bain.com/contentassets/93d384ce38dd4ab981521aa5a3e3f8fa/bain_report_india_saas_2021.pdf - Check page 17 🙂

Apart from the assignments are they any requirements to be completed from the applicants side for the GitHub Externship?

Hello Everyone! @User I was looking to contribute to signoz project through Github externship. Is there any particular format of the proposal that I should follow?

👋 Hi everyone!

Hello everyone! I am a beginner who knows typescript and React and found out about your project from goodfirstissues.com. I am looking forward to contributing to the project.

Hi Everyone.. I am able to integrate opentelemetry, SigNoz and Flask but not able to do it with Fastapi, application not showing in Matrics tab.

hello everyone, I am new new to this community. a couple of questions to start with. a) is SigNoz a opensource? b) can Signoz be configured for remote logging/debugging?

@User @User Nice to meet you, guys.

Hi, I am new to clickhouse-operator, can any one explain me what is the purpose of clickhouse-operator in SigNoz?

Hello. I currently evaluate signoz and i cant' find source code for clickhouse exporter use in deployment. I can't find any clickhouse exporter in open telemetry registry or contrib. Could you indicate me where it is possible to find go code of this exporter ?

Hello everyone! I'm Siddharth Asthana, I am in my pre-final year of engineering and wanted to contribute in SigNoz backend. I am also contributing to an open org called GitLab's, and last week got my 100MRs merged in GitLabs. I got to know about SigNoz through hackernews and since I wish to contribute to project and I recently i saw that signoz is participating in GitHub Externship. So looking forward to work with you guys 🙇 🙇 🚀

Hi everyone! I am Mihir Thakur, I like working on React JS and am regularly trying to improve my knowledge about Azure. I can to know regarding SigNoz and the projects through Github Externship. I would like to contribute to the open source APM software through the Creating Workflows or Deploy on Azure projects. I would like to work with the team and put my efforts to the projects and gain experience. Looking forward to working on the projects with the team !