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HOW TO: configure/install IOTDSES VM appliance of Snap4City

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this Snap4City IOTDSESVM has been described in https://www.snap4city.org/drupal/node/534 It includes:

 This VM is also called "iotdses-address" internally. 

This virtual machine is based on Debian operating system v8.11 (without graphic Desktop Environment) and it has been run on VMware ESXi v6.5, but you can run on VMware player. In particular, this VM contains what is described in https://www.snap4city.org/drupal/node/471 
As a prerequisite for using this virtual machine, it is necessary to download and install the free VMware Workstation Player (tested with version 15). With this tool you can launch the VM, which by default was created with the following specifications (which can be modified in the VMware "Settings" configuration panel):

number of processor: 8 (you can increase when needed)

RAM:                                    8 GB (it can be easily increased)

Hard-Disk:                           500 GB (thin provisioning) you need at least ..X. Gbyte at the first running on your HD

Access to the Operating System, credentials

IP: static verify into your system (ifconfig from Debian shell)

Operating system: Debian v8.11

username: debian,     password: debian,     password of super user (su): debian

Access to Services

NiFi                                    https://iotdses-address:8443/nifi/login

username: admin                              password: iotdsesPassword

Elastic Search API         https://iotdses-address:9200

username: user                                  password: password

Kibana                             http://iotdses-address:5601 

Configuration and Deploy

1) The VM is provided in DHCP network configuration, use command ifconfig to see the assigned ip address or set static IP (according to your preference). To ensure correct operation in any local network, check and note the IP assigned when the VM is turned on.

2) It is necessary to reconfigure the /etc/hosts file as superuser ("sudo pico /etc/hosts"), assigning to the hostname "iotdses-address" the VM current IP and change all the other IPs associated with "servicemap-instance-address" and "iotobsf" with the one of KBSSM and the one of IOTOBSF VM.

It's important to configure this information also in the  Snap4CityMAINVM  /etc/hosts file.

You also need to associate the IP of the VM with the host "iotdses-address" in your work environment, in the computer that you use to work with the Snap4City VM, for example to open dashboard or to create them.
In Linux,  please modify the usual /etc/hosts file as above,
in Windows the hosts file to be modified is located in the path ......\Windows\System32\drivers\etc

NiFi Configuration

NiFi is installed in /srv/nifi-1.9.2/ and it is running as a service (sudo service nifi status).

In order to receive data from the orion context broker iotobsf, you need to register a subscription, this can be done with command "register-iotbfsf.sh <ip of iotdses>" that is present in the /home/debian, it is importat to specify the numeric ip address of iotesds and not the host name as orion is running in a container that doesn't know this host name. Pay attention to not subscripe more than one time otherwise you will get duplicated data.

Elastic Search Configuration

Elastic Search is installed as a service (sudo service elasticsearch status)

Kibana Configuration

Kibana is installed as a service (sudo service kibana status)

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