Grafana : Install2021/09/17

	Install Web Dashboard tool, Grafana. Grafana is the visualize tool, so it needs data source from Database System like Graphite, Prometheus, Elasticsearch, InfluxDB, OpenTSDB, AWS Cloudwatch, MySQL, PostgreSQL and so on.
[1]	Install Grafana from Snappy.

root@dlp:~#

apt -y install snapd

root@dlp:~#

snap install grafana

grafana 6.7.4 from Alvaro Uría (aluria) installed

root@dlp:~#

snap info grafana

name:      grafana
summary:   feature rich metrics dashboard and graph editor
publisher: Alvaro Uría (aluria)
store-url: https://snapcraft.io/grafana
contact:   https://launchpad.net/grafana-snap
license:   unset
description: |
  Grafana is a feature rich metrics dashboard and graph editor for
  Cloudwatch,
  Elasticsearch, Graphite, InfluxDB, OpenTSB, Prometheus, and Hosted Metrics.
commands:
  - grafana.grafana-cli
services:
  grafana: simple, enabled, active
snap-id:      ehNKbg99zAxHVPCJX5LobcPRwM1xxq4P
tracking:     latest/stable
refresh-date: today at 22:56 CDT
.....
.....

[2]	Access to [http://(Grafana server's hostname or IP address):3000/] from any Clients with web browser, then, Grafana login form is shown like follows. It's possible to login with [admin] user and with the default password [admin].

[3]	When initial login, it needs to change admin password. Set any one and Click [Save] button.

[4]	After login normally, Grafana Home is shown.

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