promtail system logs

1. What is Promtail?
2. What is Promtail and Loki?
3. How do you access Loki logs?
4. What is Loki logging?
5. How do you push logs to Loki?
6. How do I install Loki?
7. How do you deploy Loki on Kubernetes?
8. Where do you put Promtails?
9. How do I view Grafana logs?
10. How do I send logs to Grafana?
11. Where does Loki store data?

What is Promtail?

Promtail is an agent which ships the contents of local logs to a private Loki instance or Grafana Cloud. It is usually deployed to every machine that has applications needed to be monitored. It primarily: ... Attaches labels to log streams. Pushes them to the Loki instance.

What is Promtail and Loki?

Loki components

Loki is a TSDB (Time-series database), it stores logs as split and gzipped chunks of data. The logs are ingested via the API and an agent, called Promtail (Tailing logs in Prometheus format), will scrape Kubernetes logs and add label metadata before sending it to Loki.

How do you access Loki logs?

Select Menu > Explore, select Data source > Loki, then select Log labels > namespace > logging. A list of logs should appear.

What is Loki logging?

Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream.

How do you push logs to Loki?

Quickly let's start the installation steps:

1. Step 1 – Install Grafana Monitoring Tool. In this section we will cover installation of Grafana on Ubuntu. ...
2. Step 2 – Install Grafana Loki Log aggregation System. ...
3. Step 3 – Install Promtail Agent. ...
4. Step 4 – Configure Loki Data Source. ...
5. Step 5 – Visualize Logs on Grafana with Loki.

How do I install Loki?

General process

1. Download and install both Loki and Promtail.
2. Download config files for both programs.
3. Start Loki.
4. Update the Promtail config file to get your logs into Loki.
5. Start Promtail.

How do you deploy Loki on Kubernetes?

Create a Kubernetes namespace to deploy the PLG Stack to:

1. $ kubectl create namespace loki.
2. $ helm repo add loki https://grafana.github.io/loki/charts.
3. $ helm repo update.
4. $ helm upgrade --install loki loki/loki-stack --namespace=loki --set grafana.enabled=true.

Where do you put Promtails?

Install Promtail

• # modify tag to most recent version docker pull grafana/promtail:2.0.0. Bash.
• helm repo add grafana https://grafana.github.io/helm-charts. Bash.
• $ helm upgrade --install promtail grafana/promtail --set "loki.serviceName=loki" Bash.

How do I view Grafana logs?

Please inspect Grafana server log for details”. The docs explains “If you encounter an error or problem, then you can check the Grafana server log. Usually located at /var/log/grafana/grafana.

How do I send logs to Grafana?

On this page:

1. Get started with Grafana Cloud Metrics and Logs, if you have existing Prometheus, Graphite and/or Loki instances. Ship your Prometheus series to Grafana Cloud. ...
2. Get started with Grafana Cloud Metrics and Logs, if you're starting from scratch. Install and configure Prometheus.

Where does Loki store data?

Loki needs to store two different types of data: chunks and indexes. Loki receives logs in separate streams, where each stream is uniquely identified by its tenant ID and its set of labels. As log entries from a stream arrive, they are compressed as “chunks” and saved in the chunks store.