CentOS Stream 9
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InfluxDB : Install
2022/11/16
 
Install Time Series Database, InfluxDB.
[1] Install InfluxDB from the InfluxDB official repository.
[root@dlp ~]# cat > /etc/yum.repos.d/influxdb.repo <<'EOF' 
[influxdb]
name = InfluxDB Repository - RHEL $releasever
baseurl = https://repos.influxdata.com/rhel/$releasever/$basearch/stable
enabled = 1
gpgcheck = 1
gpgkey = https://repos.influxdata.com/influxdb.key
EOF 

[root@dlp ~]#
dnf -y install influxdb
[root@dlp ~]#
systemctl enable --now influxdb
[2] If Firewalld is running and also you'd like to access to InfluxDB from other hosts, allow service port.
[root@dlp ~]#
firewall-cmd --add-port=8086/tcp

success
[root@dlp ~]#
firewall-cmd --runtime-to-permanent

success
[3] Configure InfluxDB.
By default, authentication is disabled, all users can use InfluxDB with privileges. So enable authentication first.
# create an admin user
# [admin] ⇒ specify any username you like
# [adminpassword] ⇒ set any password

[root@dlp ~]#
influx -execute "create user admin with password 'adminpassword' with all privileges"

[root@dlp ~]#
influx -execute "show users"

user  admin
----  -----
admin true

[root@dlp ~]#
vi /etc/influxdb/influxdb.conf
[http]
  ....
  ....

  # The bind address used by the HTTP service.
  # bind-address = ":8086"

  # Determines whether user authentication is enabled over HTTP/HTTPS.
  # 263行目 : コメント解除して変更
  auth-enabled = true

[root@dlp ~]#
systemctl restart influxdb
[4] After enabling authentication, access InfluxDB CLI like follows.
# add user info on CLI

[root@dlp ~]#
influx -username admin -password adminpassword

Connected to http://localhost:8086 version 1.8.10
InfluxDB shell version: 1.8.10
> exit

# set user info on environment variables

[root@dlp ~]#
export INFLUX_USERNAME=admin

[root@dlp ~]#
export INFLUX_PASSWORD=adminpassword

[root@dlp ~]#
influx

Connected to http://localhost:8086 version 1.8.10
InfluxDB shell version: 1.8.10
> exit

# authenticate on HTTP API

[root@dlp ~]#
curl -G http://localhost:8086/query?pretty=true -u admin:adminpassword --data-urlencode "q=show users"

{
    "results": [
        {
            "statement_id": 0,
            "series": [
                {
                    "columns": [
                        "user",
                        "admin"
                    ],
                    "values": [
                        [
                            "admin",
                            true
                        ]
                    ]
                }
            ]
        }
    ]
}
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