===== Install Kibana on Linux =====

Install Debian with basic function, only add SSH server.
Login as root
Modify ''/etc/network/interfaces''

<code>
auto enp8s0
iface enp8s0 inet static
  address 10.0.0.15
  netmask 255.255.0.0
  gateway 10.0.0.1
  dns-nameservers 10.0.0.1
</code>

Set the name of the machine in ''/etc/hostname'' and the IP addresses in ''/etc/hosts''\\
Register it with your DNS server or add it to /etc/hosts on the host system

Update the system
<code bash>
apt update && apt upgrade -y
apt autoremove -y
</code>

Create another user and set the password
<code bash>
useradd kenny
passwd kenny
</code>

Reboot 
<code bash>
reboot now
</code>

Login through ssh
<code bash>
ssh kenny@deb11-elk-04
</code>

Become root
<code bash>
su -
</code>


Install vim, tools for importing the elastic key ring, allow apt to download through https, for mounting SMB shares and unzip.
Then get the elastic key ring and add the repository
<code bash>
apt install -y vim gpg apt-transport-https cifs-utils unzip
wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | gpg --dearmor -o /usr/share/keyrings/elasticsearch-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/elasticsearch-keyring.gpg] https://artifacts.elastic.co/packages/8.x/apt stable main" | tee /etc/apt/sources.list.d/elastic-8.x.list
</code>

Install Kibana
<code bash>
apt update
apt install kibana
</code>

Change /etc/kibana/kibana.yml:
<code yaml>
In /etc/kibana/kibana.yml set:
server.port: 443
server.host: "deb11-elk-13"
elasticsearch.hosts: ["https://deb11-elk-11:9200", "https://deb11-elk-12:9200" ]
server.publicBaseUrl: "https://deb11-elk-13"
# SSL config
server.ssl.enabled: true
server.ssl.certificate: /etc/kibana/certs/deb11-elk-13_https.crt
server.ssl.key: /etc/kibana/certs/deb11-elk-13_https.key

# looging settings below are default in Linux installations (no need to modify)
# But: those settings need to be adjusted and used in Windows setups
# Enables you to specify a file where Kibana stores log output.
logging:
  appenders:
    file:
      type: file
      fileName: /var/log/kibana/kibana.log
      layout:
        type: json
  root:
    appenders:
      - default
      - file
#  layout:
#    type: json
</code>


On one of the Elasticsearch nodes generate an access token for Kibana
<code bash>
/usr/share/elasticsearch/bin/elasticsearch-create-enrollment-token -s kibana

eyJ2ZXIiOiI4LjYuMiIsImFkciI6WyIxMC42OC4xMDAuMTQ6OTIwMCJdLCJvZ3IoIoI0MzBhMWRiYWFhZGFmMjEzMjBiYzEyZTI5ZWM5NjhlOTNmZWQzMDA4YzgxMGMwYTY3NjMzOGYyZDY5NjE3OTAxIiwia2V5IjoiampEdXg0WUJtUDNfUFh6QlhVSWQ6WXJGMETtbV9ScWlqelZpMTJfckFpZyJ9
</code>

On the Kibana node configure Kibana:
<code bash>
/usr/share/kibana/bin/kibana-setup
? Enter enrollment token: eyJ2ZXIiOiI4LjYuMiIsImFkciI6WyIxMC42OC4xMDAuMTQ6OTIwMCJdLCJvZ3IoIoI0MzBhMWRiYWFhZGFmMjEzMjBiYzEyZTI5ZWM5NjhlOTNmZWQzMDA4YzgxMGMwYTY3NjMzOGYyZDY5NjE3OTAxIiwia2V5IjoiampEdXg0WUJtUDNfUFh6QlhVSWQ6WXJGMETtbV9ScWlqelZpMTJfckFpZyJ9

✔ Kibana configured successfully.

To start Kibana run:
  bin/kibana

</code>

Get the elasticsearch.serviceAccountToken from ''/etc/kibana/kibana.yml''
<code yaml>elasticsearch.serviceAccountToken: AAEAAWVsYXN0aWMva2liYW5hL2Vucm9sbC1wcm9jZXNzLXRva2VuLTE2NzE3MTc2Njg4OTA6QllmZml2MGpTNjZzRTdnR1RCMXhRUQ</code>

Generate encryption keys ...
<code bash>/usr/share/kibana/bin/kibana-encryption-keys generate

xpack.encryptedSavedObjects.encryptionKey: bdab0983a2ef291a97dd0d570329fabd
xpack.reporting.encryptionKey: d10a1eb9b4088bf06a01894fe422a939
xpack.security.encryptionKey: 777d3da41a468bc3524c7c598262538b
</code>
… and add all values to the kibana-keystore
<code bash>
/usr/share/kibana/bin/kibana-keystore add elasticsearch.serviceAccountToken
/usr/share/kibana/bin/kibana-keystore add xpack.encryptedSavedObjects.encryptionKey
/usr/share/kibana/bin/kibana-keystore add xpack.reporting.encryptionKey
/usr/share/kibana/bin/kibana-keystore add xpack.security.encryptionKey
</code>
remove the line with the ''elasticsearch.serviceAccountToken'' from ''/etc/kibana/kibana.yml''\\

To be able to copy files between the ES nodes and Kibana a mount for the SMB share is needed.\\
Create a file containing the credentials for the share in the root user directory:
<code bash>
cat > /root/backup.crd
username=kenny
password=kennyspassword
<ctrl-d>
</code>

To mount the share for the snapshot repository with the correct permissions for the elasticsearch user, we need to know the user id (uid) of the elasticsearch user:
''id -u elasticsearch''
''106''

Create the mount directory
<code bash>
mkdir /mnt/backup
</code>

Add the share used for repository in /etc/fstab\\
<code bash>
//10.0.1.10/ES       /mnt/backup     cifs    vers=3.0,credentials=/root/backup.crd,uid=106   0       0
</code>


Mount the share
<code bash>
mount //10.0.0.10/ES
</code>



On one of the elasticsearch nodes\\

Generate the SSL certificate and key for Kibana\\
<code bash>
/usr/share/elasticsearch/bin/elasticsearch-certutil cert -name deb11-elk-04_https -dns deb11-elk-04 -pem -self-signed</code>

Tell to save it as ''deb11-elk-04_http.zip'' than copy it to the share:\\
<code bash>
cp /usr/share/elasticsearch/deb11-elk-04_http.zip /mnt/backup/debby/deb11-elk-04/
</code>

Back to the Kibana node\\
Create the directory for the certificate and key
copy the certificate file, unzip it, move the certificate and key to the certs directory and clean up
<code bash>
mkdir /etc/kibana/certs
cd /etc/kibana/certs
cp /mnt/backup/debby/deb11-elk-04/deb11-elk-04_http.zip ./
unzip deb11-elk-04_http.zip
mv deb11-elk-04_https/* ./
rm -rf deb11-elk-04_https
rm deb11-elk-04_http.zip
chown -R root:kibana /etc/kibana/certs
</code>

Allow Kibana to use HTTPS default port (443) ...

Up to Kibana 8.14.x:
<code bash>
setcap cap_net_bind_service=+epi /usr/share/kibana/bin/kibana
setcap cap_net_bind_service=+epi /usr/share/kibana/bin/kibana-plugin
setcap cap_net_bind_service=+epi /usr/share/kibana/bin/kibana-keystore
setcap cap_net_bind_service=+epi /usr/share/kibana/node/bin/node
</code>

Since Kibana 8.15:
<code bash>
setcap cap_net_bind_service=+epi /usr/share/kibana/bin/kibana
setcap cap_net_bind_service=+epi /usr/share/kibana/bin/kibana-plugin
setcap cap_net_bind_service=+epi /usr/share/kibana/bin/kibana-keystore
setcap cap_net_bind_service=+epi /usr/share/kibana/node/glibc-217/bin/node
</code>



Install Kibana as service and start it
<code bash>
systemctl daemon-reload
systemctl enable kibana.service

systemctl start kibana.service
</code>

Kibana is now availbale at ''https://deb11-elk-04''\\

Either use the generated password from the installation of ES or generate a new one on a ES node with 
<code bash>
/usr/share/elasticsearch/bin/elasticsearch-reset-password -u elastic
</code>
Login with elastic and the password

Kibana is installed