LAB Exercises
Prepare VM on the
Stratus Cloud
2024
IoT LAB – Cloud Services
IoT LAB – today’s tasks
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Prepare virtual machine(s)
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Construct IP connectivity
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Install InfluxDB
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Install Grafana
Stratus.FI
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OpenNebula virtualization platform
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Open to all students from FI
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Pre-configured virtual machines
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Login to management the same as login to KYPO PCs
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https://stratus.fi.muni.cz/
Stratus.FI
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Two ways to log into VM:
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PKI
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password
Using Stratus.FI with PKI
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Prepare ssh keys
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Linux
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ssh-keygen -b 4096 -t rsa -f Stratus
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PassPhrase preferably empty
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Will generate files Stratus and Stratus.pub
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Windows
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Puttygen
Using Stratus.FI with PKI
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Save your public key to Stratus
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Login
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Click your name → Settings → Auth → Public SSH Key
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You can add new key if you already have one installed
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Create virtual machine
Create virtual machine
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Use template 1307 – Debian12[CVTFI]
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Instantiate as persistent
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Assign a name
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Click Create
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Don’t use
excessive
resources
Create virtual machine
Using Stratus.FI with password
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Generate DES encrypted password
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Create the VM
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Install the root password
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Log-in via VNC
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Create an user
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Log-in via ssh and newly created user
Generate DES encrypted password
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Linux
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mkpasswd -m des your_password
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mkpasswd is part of the whois package
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Windows
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Use some on-line Python interpreter, e.g.,
https://www.programiz.com/python-programming/online-co
mpiler/
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import crypt
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hashed_password = crypt.crypt("your_password", "salt")
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print(hashed_password)
Using Stratus.FI with password
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Open the VM → Conf
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→ Update Configuration
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→ Context → Custom vars
Create a local user
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useradd -m your_username
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passwd your_username
Using Stratus.FI
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Now you can access the console from Stratus
management interface
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Access is allowed from FI, not from KYPO LAB
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Similar situation is expected in real life as well
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Two way to overcame the fence:
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SSH port forwarding
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OpenVPN
SSH port forwarding
SSH port forwarding
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Mainly for web interface to your servers
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Example Linux
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ssh -L 2222:Your_VM_IP_addr:22
-L 3000:Your_VM_IP_addr:3000
-L 8086:Your_VM_IP_addr:8086 yourlogin@aisa.fi.muni.cz
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ssh -i Stratus -p 2222 root@127.0.0.1
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Web browser http://localhost:3000
SSH port forwarding – Windows Client
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Set host aisa.fi.muni.cz
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Side pannel → connection → SSH → Tunnel
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Source port 2222
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Destination Your_VM_IP_addr:22 → Click add
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Source port 3000
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Destination Your_VM_IP_addr:3000 → Click add
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Source port 8086
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Destination Your_VM_IP_addr:8086 → Click add
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Save the configuration
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Open a new putty window, host = 127.0.0.1, port = 2222
InfluxDB
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Follow the instructions on the web
https://docs.influxdata.com/influxdb/v2/install/
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Or go directly to the download page
https://www.influxdata.com/downloads/
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If the gpg package is missing, install it via apt-get install
gpg
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Don’t forget to start the influxdb: sudo service influxdb
start
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And check it’s running: sudo service influxdb status
Grafana
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Follow the instructions on the web:
https://grafana.com/docs/grafana/latest/setup-grafana/i
nstallation/debian/
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Get started with Grafana and InfluxDB:
https://grafana.com/docs/grafana/latest/getting-started/
get-started-grafana-influxdb/
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Login to Grafana: https:127.0.0.1:3000
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Default credentials: admin/admin
Create a database (bucket) in InfluxDB
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Open the InfluxDB UI: http://localhost:8086
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Create a Bucket (InfluxDB v2 uses "buckets" instead of databases):
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Log in to the InfluxDB UI.
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Go to Data > Buckets > Click Create Bucket.
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Enter a name for the bucket. > Click Create to save the bucket.
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Set Up Authorization (Token):
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Go to Data > Tokens.
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Either create a new token or use the default one to authenticate your API calls.
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Copy the token, you’ll need it for data interactions via the InfluxDB API or
InfluxDB CLI.
Add InfluxDB as a Data Source in Grafana
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Log in to Grafana: Go to your Grafana instance (e.g., http://localhost:3000).
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Add Data Source:
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In the left sidebar, click on Configuration > Data sources.
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Click Add data source.
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Select InfluxDB from the list.
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Configure InfluxDB Connection:
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URL: Enter http://localhost:8086
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Database Type: Choose InfluxQL or Flux based on your setup. InfluxDB v2 typically uses Flux as
the query language.
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Token: Paste the InfluxDB token you used to authenticate.
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Organization: Enter the name of your InfluxDB organization.
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Bucket: Select the bucket name where the sensor data is stored.
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Save & Test: Click Save & Test to ensure the connection is successful.
Now you have the cloud SW installed.
Next lab exercise we connect the RockPi
as data source.