Nutanix_Home_Lab_HLD_9_IT‐sertifiseringer - itnett/FTD02H-N GitHub Wiki

For å integrere temaene "CCNA" og "ITIL 4" i ditt eksisterende Nutanix CE-lab, kan vi opprette et miljø som dekker de nødvendige komponentene for å forberede kandidater til sertifiseringer som CCNA og ITIL 4 Foundation. Dette miljøet vil inkludere simulerte nettverk for praktisk øvelse i nettverksadministrasjon og ITIL-praksis i en tjenesteorientert infrastruktur. Vi vil også integrere Nutanix sertifiseringer, CyberOps Associate, PCAP, og Blue Team Level 1 som en del av det bredere opplæringsmiljøet.

For å støtte disse sertifiseringene, vil vi introdusere flere VLAN dedikert til nettverkskonfigurasjoner, ITIL-prosesser, og sikkerhetstrening.

For å støtte CCNA og ITIL 4, samt tilknyttede sertifiseringer, vil vi opprette servere dedikert til nettverkssimulering, ITIL-prosesser, og sikkerhetspraksis.

Vi lager Blueprints i Nutanix Calm for hver server i de ulike domenene. Disse Blueprintene vil installere nødvendige verktøy og konfigurere miljøet ved oppstart.

Blueprint Details:

• Name: CCNA1_SERVER_01
• Base Image: Minimal Ubuntu (Template)
• Scripts:

#!/bin/bash
# Startup Script: configure_ccna1_server.sh

# Set Hostname
hostnamectl set-hostname "CCNA1-SERVER-01"

# Set IP Address
nmcli con mod "System eth0" ipv4.addresses "10.3.0.10/24" ipv4.gateway "10.3.0.1" ipv4.dns "10.3.0.1" ipv4.method manual
nmcli con up "System eth0"

# Install network simulation tools (e.g., GNS3)
add-apt-repository ppa:gns3/ppa -y
apt-get update -y
apt-get install -y gns3-server

# Start GNS3 service
systemctl start gns3
systemctl enable gns3

Blueprint Details:

• Name: CCNA2_SERVER_01
• Base Image: Minimal Ubuntu (Template)
• Scripts:

#!/bin/bash
# Startup Script: configure_ccna2_server.sh

# Set Hostname
hostnamectl set-hostname "CCNA2-SERVER-01"

# Set IP Address
nmcli con mod "System eth0" ipv4.addresses "10.3.1.10/24" ipv4.gateway "10.3.1.1" ipv4.dns "10.3.1.1" ipv4.method manual
nmcli con up "System eth0"

# Install switching and routing tools (e.g., Cisco Packet Tracer)
apt-get update -y
apt-get install -y packettracer

# Install additional networking tools
apt-get install -y iperf3 net-tools

Blueprint Details:

• Name: CCNA3_SERVER_01
• Base Image: Minimal Ubuntu (Template)
• Scripts:

#!/bin/bash
# Startup Script: configure_ccna3_server.sh

# Set Hostname
hostnamectl set-hostname "CCNA3-SERVER-01"

# Set IP Address
nmcli con mod "System eth0" ipv4.addresses "10.3.2.10/24" ipv4.gateway "10.3.2.1" ipv4.dns "10.3.2.1" ipv4.method manual
nmcli con up "System eth0"

# Install security tools (e.g., Nmap, Wireshark)
apt-get update -y
apt-get install -y nmap wireshark

# Install automation tools (e.g., Ansible)
apt-get install -y ansible

Blueprint Details:

• Name: ITIL4_SERVER_01
• Base Image: Minimal Ubuntu (Template)
• Scripts:

#!/bin/bash
# Startup Script: configure_itil4_server.sh

# Set Hostname
hostnamectl set-hostname "ITIL4-SERVER-01"

# Set IP Address
nmcli con mod "System eth0" ipv4.addresses "10.3.3.10/24" ipv4.gateway "10.3.3.1" ipv4.dns "10.3.3.1" ipv4.method manual
nmcli con up "System eth0"

# Install ITIL documentation tools (e.g., DokuWiki, Confluence)
apt-get update -y
apt-get install -y dokuwiki

# Install project management tools (e.g., Redmine)
apt-get install -y redmine

For å automatisere opprettelsen og styringen av CCNA- og ITIL-miljøer ved hjelp av Nutanix REST API, kan du bruke lignende trinn som tidligere nevnt.

curl -u "username:password" -X POST 'https://<prism_central_ip>:9440/api/nutanix/v3/login'

1. Opprett en CCNA-server:

   curl -X POST https://<prism_central_ip>:9440/api/nutanix/v3/blueprints/<blueprint_uuid>/launch \
   -H "Authorization: Bearer <token>" \
   -H "Content-Type: application/json" \
   -d '{
     "spec": {
       "name": "CCNA1_SERVER_DEPLOYMENT",
       "description": "Deployment of CCNA1-SERVER-01",
       "app_profile_reference": {
         "kind": "app_profile",
         "uuid": "<app_profile_uuid>"
       },
       "application_name": "CCNA1-SERVER-01"
     }
   }'

curl -X DELETE https://<prism_central_ip>:9440/api/nutanix/v3/apps/<application_uuid> \
-H "Authorization: Bearer <token>"

For å overvåke og optimalisere ressursbruken når du kjører CCNA- og IT

IL-miljøer:

1. Overvåk ressursbruk:

   • Bruk Prism Central til å se CPU-, RAM-, og lagringsbruk for hver VM i sanntid.
   • Identifiser potensielle flaskehalser eller underutnyttede ressurser.

2. Varsler og kapasitetsplanlegging:

   • Sett opp varsler for å overvåke ressursbruk og sikre at ingen VM overskrider sine tildelte ressurser.
   • Bruk Prism’s Capacity Runway-verktøy for å planlegge fremtidige utvidelser eller tilpasninger.

3. Optimaliser ressursbruk:

   • Juster ressursallokering basert på bruken og læringsbehovene.
   • Bruk automatisering i Calm for å justere ressurser dynamisk når miljøer startes og stoppes.

Overall Design:

• Network Segmentation: VLANs isolate different environments to prevent interference between labs and allow for specialized testing (e.g., switching and routing for CCNA 2).
• Resource Allocation: Each server is allocated sufficient CPU, memory, and storage resources based on the expected workload, ensuring smooth operation without overloading the rig.
• Security Measures: Each VLAN has built-in security measures like firewalls and ACLs to replicate real-world networking and IT service management scenarios.
• Automation and Management: Nutanix Calm and REST APIs are used to automate the deployment, configuration, and scaling of these environments.

Server Configuration and Deployment:

• Operating Systems: Most servers will run minimal Ubuntu, except for specialized environments like GNS3 for networking simulations.
• Network Configuration:
  • Each server is connected to its specific VLAN through dedicated NICs (onboard NICs and USB-to-NIC dongles).
  • Static IP addresses are assigned to each server for consistent network configuration.
• Software Installation:
  • Servers are pre-configured with relevant software based on their role, such as GNS3 on CCNA1-SERVER-01, Packet Tracer on CCNA2-SERVER-01, or Ansible on CCNA3-SERVER-01.
• Security Settings:
  • Basic security configurations are applied to all servers, such as firewall rules and user access controls.

Managing Resources within the Rig's Limitations:

• CPU and Memory Allocation: The rig has 6 cores (12 threads) and 32GB of RAM. Not all servers will run simultaneously. Servers are grouped based on their use case, and only necessary servers are powered on depending on the lab scenario.
• Storage Management:
  • The Samsung 850 EVO 500GB SSD is used for high-speed storage of critical VMs.
  • The additional HDDs (3x1.5TB and 1x4TB) are used for large data storage, logs, and backup purposes.
• Dynamic Resource Allocation: Nutanix Calm allows for the dynamic provisioning and de-provisioning of resources, ensuring optimal use of CPU and memory.

This setup provides a comprehensive environment for preparing for CCNA and ITIL 4 certifications. It maximizes the use of your rig's capabilities while staying within its limitations, using VLANs, domains, and Nutanix's automation tools to create a flexible, dynamic lab environment.