Viewing Host Level Metrics with SigNoz Docker App
TLDR Priya wanted to view host level metrics in SigNoz's standalone docker app. Ashu guided them to enable a dashboard and import a JSON to view metrics. After more queries, Prashant clarified how to display metrics correctly for different hosts.
Ashu
Tue, 10 Oct 2023 09:35:57 UTCHi Priya That will come under `Dashboards` tab. You would need to create a hostmetrics dashboard.
Check out these docs:
Priya
Tue, 10 Oct 2023 11:01:45 UTCHi Ashu fo the response so I have installed SigNoz on Docker Standalone and in above doc SIGNOZ_INGESTION_KEY is needed what is that how to get it ?
Ashu
Tue, 10 Oct 2023 11:05:51 UTCCan you check the docs under self-host section?
Priya
Tue, 10 Oct 2023 11:26:03 UTCso I already have signoz up and running and its all all the containers up. I have instrumented my go application as well using this doc
Ashu
Tue, 10 Oct 2023 11:40:27 UTCIs SigNoz and your application running on the same host?
Priya
Tue, 10 Oct 2023 11:49:25 UTCyes
Ashu
Tue, 10 Oct 2023 12:12:25 UTCCan you try these steps:
• Go to Dashboards
• Click on `+New Dashboard`
• Click on `Import json`
• Paste JSON from this
Priya
Tue, 10 Oct 2023 12:23:24 UTCThanks Ashu but just to understand how exactly it will collect the host metrics via the json ?
Priya
Tue, 10 Oct 2023 12:24:47 UTCLike for controllers i am starting a span using otel tracer and adding the attributes i need and thats coming under traces, dont i need to add cpde for host metrivs as well?
Ashu
Tue, 10 Oct 2023 12:29:03 UTCBy defualt, when you install SigNoz, the hostmetrics receiver is enabled. You can read more about the receiver here:
Priya
Tue, 10 Oct 2023 12:59:56 UTCThanks Ashu it worked.
Priya
Tue, 10 Oct 2023 13:02:15 UTCjust one last question this dashboard is showing hostname as signoz_host where to change this name ?
Priya
Tue, 10 Oct 2023 13:11:32 UTCAlso is there any way to see what exactly data it is storing which is getting used in the dashboard .. just to verify if getting the stats from the host where the application is running. Also what if the application is running on different host and signoz is on different host. where is this metrics coming from how to ensure that ?..
Priya
Tue, 10 Oct 2023 13:12:01 UTCBy defualt, when you install SigNoz, the hostmetrics receiver is enabled then its collecting the metrics from the machine where signoz is running right ?
Ashu
Tue, 10 Oct 2023 13:20:52 UTC> By defualt, when you install SigNoz, the hostmetrics receiver is enabled then its collecting the metrics from the machine where signoz is running right ? Yes > Also what if the application is running on different host and signoz is on different host. where is this metrics coming from how to ensure that ?.. If the application is running on a different host, you would need to install otel-collector binary there and configure it to send data to the machine where SigNoz is installed. > just one last question this dashboard is showing hostname as signoz_host where to change this name ? Prashant would be able to help you on this. > Also is there any way to see what exactly data it is storing which is getting used in the dashboard .. just to verify if getting the stats from the host where the application is running. <@4K1456> is there any way to do this? I am guessing this is a clickhouse table where the data is stored.
Priya
Tue, 10 Oct 2023 13:39:03 UTCThank you Ashu <@4K1555> <@4K1456> if you xan help understanding above questions
Prashant
Tue, 10 Oct 2023 13:52:37 UTCPriya In the hostmetrics dashboard shared above by Ashu , hostname is a variable. More sources i.e. VM/K8s nodes you send data from, more hosts will be available in that option
Priya
Tue, 10 Oct 2023 13:56:47 UTC```"variables": { "hostname": { "customValue": "", "description": "Hostname of the instance", "modificationUUID": "f8ed0d75-f0e7-4c82-978e-22bfe98a5c2b", "multiSelect": false, "name": "hostname", "queryValue": "SELECT DISTINCT(JSONExtractString(labels, 'host_name'))\nFROM signoz_metrics.time_series_v2\nWHERE not has(JSONExtractKeys(labels), 'k8s_node_name')", "selectedValue": "signoz-host", "showALLOption": false, "sort": "DISABLED", "textboxValue": "", "type": "QUERY" }``` I believe its coming from above json that we imported in dashboard, can we change it to actual host name ? how to see the data stored in click house
Priya
Tue, 10 Oct 2023 18:40:15 UTCLets say my go application is running in a cluster of 5 machines and need to send the machine metrics to signoz ui.. now how to change the hostname so that dashboard shows the metrics for each of the hosts
Priya
Wed, 11 Oct 2023 05:52:23 UTCAshu I have few more questions: 1. do we support sampling here ? (like collect traces for 1 out of 10 api calls) 2. process level metrics ( how much of cpu, memory etc is getting consumed by my application) 3. if my application is making db connection (redis connection) how to #db connections etc. Thank you for helping and answering all questions
Prashant
Wed, 11 Oct 2023 20:46:04 UTC> I believe its coming from above json that we imported in dashboard, can we change it to actual host name ? how to see the data stored in click house Did you import `hostmetrics-with-variable.json`? If yes, that `signoz-host` default value that is only shown once. But when hostname variable dropdown is clicked, you should see list of your VMs.
Prashant
Wed, 11 Oct 2023 20:46:50 UTC> Lets say my go application is running in a cluster of 5 machines and need to send the machine metrics to signoz ui.. now how to change the hostname so that dashboard shows the metrics for each of the hosts
Also, in case of K8s nodes, you will need to import
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Priya
Tue, 10 Oct 2023 09:27:32 UTCHello <#C01HWUTP4HH|general> I am using signoz standalone docker app, I can see section metrics like explained in the official website. Basically I want to see the host level metrics like cpu, memory etc. How to see that ?