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[[File:Infocepo-picture.png|thumb|right|Discover cloud computing on infocepo.com]]
'''Discover cloud computing on infocepo.com''':
* Master cloud infrastructure
* Explore AI
* Compare Kubernetes and AWS
* Advance your IT skills with hands-on labs and open-source software.


Start your journey to expertise.
= Discover Cloud Computing on infocepo.com =


<br>
Welcome! This portal is designed for IT professionals, engineers, students, and enthusiasts who want to master cloud infrastructure, explore AI tools, and accelerate their IT skills through hands-on labs and open-source solutions.
== AI Tools ==
*[https://chat.openai.com ChatGPT4] - public assistant with learning abilities.
*[https://github.com/open-webui/open-webui open-webui] + [https://www.scaleway.com/en/h100-pcie-try-it-now/ GPU H100] + [https://ollama.com Ollama] - private assistant and API.
*[https://github.com/ynotopec/summarize private summary]


=== DEV ===
__TOC__
(22/03/2024)
*[https://github.com/hiyouga/LLaMA-Factory LLM Fine Tuning]
*[https://huggingface.co/models Models Trending]
*[https://github.com/trending Project Trending]
*[https://chat.lmsys.org ChatBot Evaluate]
*[https://huggingface.co/spaces/HuggingFaceH4/open_llm_leaderboard LLM Ranking]
*[https://huggingface.co/spaces/mteb/leaderboard Embeddings Ranking]
*[https://huggingface.co/spaces/TIGER-Lab/GenAI-Arena Image Evaluate]
*[https://www.perplexity.ai Perplexity AI] - R&D
*[https://github.com/THUDM/CogVLM CogVLM] - Private API for multimodal purposes. Usable with RAG.
*[https://ann-benchmarks.com Vectors DB Ranking]
*[https://github.com/chatchat-space/Langchain-Chatchat Chatchat] - private assistant with RAG capabilities but Chinese language.
*[https://www.nvidia.com/en-us/data-center/h200 NVIDIA H200] - KUBERNETES or HPC clusters for DATASCIENCE.
*[https://www.nvidia.com/fr-fr/geforce/graphics-cards/40-series/rtx-4080-family NVIDIA 4080] - GPU card for private assistance.
==== INTERESTING LLMs ====
(22/03/2024)
* Vicuna-33B (private assistant)
* Qwen-14B (32k, RAG)
* Vicuna-7B (summary)


=== NEWS ===
== Quick Start ==
(04/05/2024)
* '''Master cloud infrastructure:''' Practical guides and labs
* [https://www.youtube.com/@lev-selector/videos Very good AI News]
* '''Explore artificial intelligence:''' Trends and hands-on tools
* LLM [https://ollama.com/library/llama3-gradient llama3-gradient 1M] for long context available
* '''Compare cloud providers:''' Kubernetes, AWS, OpenStack, and more
* For the [https://betterprogramming.pub/color-your-captions-streamlining-live-transcriptions-with-diart-and-openais-whisper-6203350234ef '''transcription'''] real time with Diart it is possible to follow the interlocutors
* '''Develop expertise:''' Training, open-source, and real-world projects
* [https://github.com/openai-translator/openai-translator translation] tools like Google translate are becoming popular
* [https://www.mouser.fr/ProductDetail/BittWare/RS-GQ-GC1-0109?qs=ST9lo4GX8V2eGrFMeVQmFw%3D%3D '''LLM 10x accelerator'''] and cheaper with GROQ
* [https://opensearch.org/docs/latest/search-plugins/conversational-search Opensearch with LLM]
* ACCEL : vision IA chip very efficient and powerful.
* IBM NorthPole : an IA chip very efficient and powerful.


=== TRAINING ===
----
*[https://www.youtube.com/watch?v=4Bdc55j80l8 TRANSFORMERS ALGORITHM]


== CLOUD LAB ==
= AI & Cloud Tools =
[[file:Infocepo.drawio.png]]
<br><br>
Presenting my [[LAB project]].


== CLOUD Audit ==
; '''AI Assistants'''
Created [[ServerDiff.sh]] for server audits. Enables configuration drift tracking and environment consistency checks.
* [https://chat.openai.com ChatGPT4] – Public conversational AI with strong learning capabilities
* [https://github.com/open-webui/open-webui Open WebUI] + [https://www.scaleway.com/en/h100-pcie-try-it-now/ GPU H100] + [https://ollama.com Ollama] – Private assistants and self-hosted LLM APIs
* [https://github.com/ynotopec/summarize Private summary] – Fast, offline summarizer for your data


== CLOUD Migration Example ==
; '''Development & Model Tracking'''
[[File:Diagram-migration-ORACLE-KVM-v2.drawio.png]]
* [https://ollama.com/library LLM Trending] – Latest open-source LLMs
*1.5d: Infrastructure audit of 82 services ([https://infocepo.com/wiki/index.php/ServerDiff.sh ServerDiff.sh])
* [https://github.com/search?q=stars%3A%3E15000+forks%3A%3E1500+created%3A%3E2022-06-01&type=repositories&s=updated&o=desc Project Trending] – Top trending codebases since 2022
* [https://huggingface.co/spaces/HuggingFaceH4/open_llm_leaderboard LLM Leaderboard] – Community benchmarks
* [https://chat.lmsys.org ChatBot Evaluation] – Compare chatbot performance
* [https://www.perplexity.ai Perplexity AI] – Cutting-edge research and question answering
* [https://huggingface.co/models Models Trending] – Model marketplace
* [https://github.com/hiyouga/LLaMA-Factory LLM Fine Tuning] – Advanced training framework
* [https://huggingface.co/spaces/mteb/leaderboard Embedding Leaderboard] – Ranking for vector search models
* [https://ann-benchmarks.com Vectors DB Ranking] – Database speed and feature comparison
* [https://www.nvidia.com/en-us/data-center/h100/ NVIDIA H100] – HPC/AI GPUs for Kubernetes clusters
* [https://www.nvidia.com/fr-fr/geforce/graphics-cards/40-series/rtx-4080-family NVIDIA 4080] – Prosumer GPU for private deployments
* [https://huggingface.co/models?pipeline_tag=image-text-to-text&sort=trending Img2txt Trending] – Vision-language models
* [https://huggingface.co/spaces/TIGER-Lab/GenAI-Arena Txt2img Evaluation] – Compare generative image models
* [https://github.com/chatchat-space/Langchain-Chatchat Chatchat] – Private RAG assistant (multi-lingual)
* [https://top500.org/lists/green500/ HPC Efficiency] – Top green supercomputers


*1.5d: Create cloud architecture diagram
----


*1.5d: Compliance check of 2 clouds (6 hypervisors, 6TB memory)
== Notable Open LLMs ==
''(Last updated: 25/04/2025)''


*1d: Cloud installations
{| class="wikitable"
 
! Model !! Description / Notable Features
*.5d: Stability check
|-
{| style="border-spacing:0;width:18.12cm;"
| '''ai-chat''' || gemma3-12b, cost efficient
|- style="background-color:#ffc000;border:0.05pt solid #000000;padding:0.049cm;"
|-
| align=center style="color:#000000;" | '''ACTION'''
| '''ai-chat-hq''' || gemma3-27b, higher quality
| align=center style="color:#000000;" | '''RESULT'''
|-
| align=center style="color:#000000;" | '''OK/KO'''
| '''ai-translate''' || gemma2, temperature=0 (deterministic translation)
|-
| '''ai-summary''' || qwen2.5, optimized for summarization
|-
| '''ai-code''' || gemma3-27b, advanced code reasoning
|-
|-
| style="border:0.05pt solid #000000;padding:0.049cm;color:#000000;" | Activate maintenance for n/2-1 nodes or 1 node if 2 nodes.
| '''ai-code-completion''' || gemma3-1b, fast code suggestions
| style="border:0.05pt solid #000000;padding:0.049cm;color:#000000;" | All resources are started.
| style="background-color:#d8e4bc;border:0.05pt solid #000000;padding:0.049cm;color:#000000;" |
|-
|-
| style="border:0.05pt solid #000000;padding:0.049cm;color:#000000;" | Un-maintenance all nodes. Power off n/2-1 nodes or 1 node if 2 nodes, different from the previous test.
| '''ai-parse''' || gemma2-simpo, parsing & extraction
| style="border:0.05pt solid #000000;padding:0.049cm;color:#000000;" | All resources are started.
| style="background-color:#d8e4bc;border:0.05pt solid #000000;padding:0.049cm;color:#000000;" |
|-
|-
| style="border:0.05pt solid #000000;padding:0.049cm;color:#000000;" | Power off simultaneous all nodes. Power on simultaneous all nodes.
| '''ai-RAG-FR''' || qwen2.5, French RAG applications
| style="border:0.05pt solid #000000;padding:0.049cm;color:#000000;" | All resources are started.
| style="background-color:#d8e4bc;border:0.05pt solid #000000;padding:0.049cm;color:#000000;" |
|-
|-
| '''mannix/gemma2-9b-simpo''' || OllamaFunctions integration
|}
|}
*1.5d: Cloud automation study


*1.5d: Develop 6 templates (2 clouds, 2 OS, 8 environments, 2 versions)
----


*1d: Create migration diagram
= Industry News & Trends =


*1.5d: Write 138 lines of migration code ([https://infocepo.com/wiki/index.php/MigrationApp.sh MigrationApp.sh])
* [https://www.youtube.com/@lev-selector/videos Top AI News] – Video digest
* [https://betterprogramming.pub/color-your-captions-streamlining-live-transcriptions-with-diart-and-openais-whisper-6203350234ef Real-time transcription with Diart + Whisper] – Speaker tracking
* [https://github.com/openai-translator/openai-translator OpenAI Translator] – Modern open-source translation
* [https://www.mouser.fr/ProductDetail/BittWare/RS-GQ-GC1-0109?qs=ST9lo4GX8V2eGrFMeVQmFw%3D%3D GROQ LLM accelerator] – Fast, low-cost inference hardware
* [https://opensearch.org/docs/latest/search-plugins/conversational-search Opensearch with LLM] – Enhanced search experiences


*1.5d: Process stabilization
----


*1.5d: Cloud vs old infrastructure benchmark
= Training & Learning =


*.5d: Unavailability time calibration per migration unit
* [https://www.youtube.com/watch?v=4Bdc55j80l8 Transformers Explained] – Intro to Transformers algorithm
* Hands-on labs and scripts in the [[LAB project|CLOUD LAB]] below


*5min: Load 82 VMs (env, os, application_code, 2 IP)
----


Total = 15 man-days
= Cloud Lab & Audit Projects =


== WEB Enhancement ==
[[File:Infocepo.drawio.png|400px|Cloud Lab Reference Diagram]]
[[File:WebModelDiagram.drawio.png]]


* Formalize infrastructure for flexibility and reduced complexity.
; '''Lab Project''' 
* Utilize customer-location tracking name server like GDNS.
Experiment with high-availability, cloud migration, and audit automation.
* Use minimal instances with a network load balancer like LVS.
 
* Compare prices of dynamic computing services, beware of tech lock-in.
=== Cloud Audit ===
* Employ efficient frontend TLS decoder like HAPROXY.
* '''[[ServerDiff.sh]]''' – Bash script for auditing servers, tracking config drift, and checking environment consistency
* Opt for fast HTTP cache like VARNISH and Apache Traffic Server for large files.
 
* Use PROXY with TLS decoder like ENVOY for service compatibility.
=== Cloud Migration Example ===
* Consider serverless service for standard runtimes, mindful of potential incompatibilities.
[[File:Diagram-migration-ORACLE-KVM-v2.drawio.png|400px|Cloud Migration Diagram]]
* Employ load balancing or native services for dynamic computing power.
 
* Use open source STACKs where possible.
{| class="wikitable"
* Employ database caches like MEMCACHED.
! Task !! Description !! Duration (days)
* Use queues for long batch.
|-
* Use buffers for stability of real streams.
| Audit infrastructure || 82 services, automated via ServerDiff.sh || 1.5
* More information at [https://wikitech.wikimedia.org/wiki/Wikimedia_infrastructure CLOUD WIKIPEDIA] and [https://github.com/systemdesign42/system-design GITHUB].
|-
| Diagram cloud architecture || Visual design || 1.5
|-
| Compliance check || 2 clouds, 6 hypervisors, 6TB RAM || 1.5
|-
| Install cloud platforms || Deploy core cloud environments || 1.0
|-
| Stability check || Early operations || 0.5
|-
| Automation study || Automate deployment/tasks || 1.5
|-
| Develop templates || 6 templates, 8 envs, 2 clouds/OS || 1.5
|-
| Migration diagram || Process illustration || 1.0
|-
| Write migration code || 138 lines (see MigrationApp.sh) || 1.5
|-
| Process stabilization || Ensure repeatable migration || 1.5
|-
| Cloud benchmarking || Performance test vs legacy || 1.5
|-
| Downtime calibration || Per-migration time calculation || 0.5
|-
| VM loading || 82 VMs: OS, code, 2 IPs each || 0.1
|-
! colspan=2 align="right"| '''Total''' !! 15 man-days
|}


== CLOUD WIKIPEDIA ==
==== Stability check ====
* [https://wikitech.wikimedia.org/wiki/Wikimedia_infrastructure CLOUD WIKIPEDIA]


== CLOUD vs HW ==
{| class="wikitable"
{| class="wikitable"
! Action !! Expected Result
|-
|-
! Function
| Power off one node || All resources started
! Kubernetes
! OpenStack
! AWS
! Bare-metal
! HPC
! CRM
! oVirt
|-
|-
| '''Deployment Tools'''<br>''(Tools used for deployment)''
| Power off/on all nodes simultaneously || All resources started
| Helm, YAML, Operator, Ansible, Juju, ArgoCD
|}
| Ansible, Packer, Terraform, Juju
 
| Ansible, Terraform, CloudFormation, Juju
----
| Ansible, Shell Scripts
 
| xCAT, Clush
= Web Infrastructure & Best Practices =
| Ansible, Shell Scripts
 
| Ansible, Python, Shell Scripts
[[File:WebModelDiagram.drawio.png|400px|Web Architecture Reference]]
 
* Favor minimal, flexible infrastructure
* Track customer location via GDNS or similar
* Use network load balancers (LVS, IPVS) for scaling
* Compare prices and beware of vendor lock-in
* For TLS: use HAProxy for fast frontend, Envoy for compatibility
* Caching: Varnish, Apache Traffic Server for large content
* Prefer open-source stacks and database caches (e.g. Memcached)
* Use message queues and buffers for workload smoothing
* For more examples: [https://wikitech.wikimedia.org/wiki/Wikimedia_infrastructure Wikimedia Cloud Architecture], [https://github.com/systemdesign42/system-design System Design GitHub]
 
----
 
= Major Cloud Platforms: Feature Comparison =
 
{| class="wikitable"
! Function !! Kubernetes !! OpenStack !! AWS !! Bare-metal !! HPC !! CRM !! oVirt
|-
|-
| '''Bootstrap Method'''<br>''(Initial configuration and setup)''
| '''Deployment Tools''' || Helm, YAML, ArgoCD, Juju || Ansible, Terraform, Juju || CloudFormation, Terraform, Juju || Ansible, Shell || xCAT, Clush || Ansible, Shell || Ansible, Python
| API
| API, PXE
| API
| PXE, IPMI
| PXE, IPMI
| PXE, IPMI
| PXE, API
|-
|-
| '''Router Control'''<br>''(Routing services)''
| '''Bootstrap Method''' || API || API, PXE || API || PXE, IPMI || PXE, IPMI || PXE, IPMI || PXE, API
| API (Kube-router)
| API (Router/Subnet)
| API (Route Table/Subnet)
| Linux, OVS, External Hardware
| xCAT, External Hardware
| Linux, External Hardware
| API
|-
|-
| '''Firewall Control'''<br>''(Firewall rules and policies)''
| '''Router Control''' || Kube-router || Router/Subnet API || Route Table/Subnet API || Linux, OVS || xCAT || Linux || API
| Ingress, Egress, Istio, NetworkPolicy
| API (Security Groups)
| API (Security Group)
| Linux Firewall
| Linux Firewall
| Linux Firewall
| API
|-
|-
| '''Network Virtualization'''<br>''(VLAN/VxLAN technologies)''
| '''Firewall Control''' || Istio, NetworkPolicy || Security Groups API || Security Group API || Linux Firewall || Linux Firewall || Linux Firewall || API
| Multiple Options
| VPC
| VPC
| OVS, Linux, External Hardware
| xCAT, External Hardware
| Linux, External Hardware
| API
|-
|-
| '''Name Server Control'''<br>''(DNS services)''
| '''Network Virtualization''' || VLAN, VxLAN, others || VPC || VPC || OVS, Linux || xCAT || Linux || API
| CoreDNS
| DNS-Nameserver
| Amazon Route 53
| GDNS
| xCAT
| Linux, External Hardware
| API, External Hardware
|-
|-
| '''Load Balancer'''<br>''(Load balancing options)''
| '''DNS''' || CoreDNS || DNS-Nameserver || Route 53 || GDNS || xCAT || Linux || API
| Kube-proxy, LVS (IPVS)
| LVS
| Network Load Balancer
| LVS
| SLURM
| Ldirectord
| N/A
|-
|-
| '''Storage Options'''<br>''(Available storage technologies)''
| '''Load Balancer''' || Kube-proxy, LVS || LVS || Network Load Balancer || LVS || SLURM || Ldirectord || N/A
| Multiple Options
|-
| Swift, Cinder, Nova
| '''Storage Options''' || Local, Cloud, PVC || Swift, Cinder, Nova || S3, EFS, EBS, FSx || Swift, XFS, EXT4, RAID10 || GPFS || SAN || NFS, SAN
| S3, EFS, FSx, EBS
| Swift, XFS, EXT4, RAID10
| GPFS
| SAN
| NFS, SAN
|}
|}


== CLOUD providers ==
----
* [https://cloud.google.com/free/docs/aws-azure-gcp-service-comparison CLOUD providers]
 
== CLOUD INTERNET NETWORK ==
= Useful Cloud & IT Links =
* [https://global-internet-map-2021.telegeography.com/ CLOUD INTERNET NETWORK]
 
== CLOUD NATIVE ==
* [https://cloud.google.com/free/docs/aws-azure-gcp-service-comparison Cloud Providers Compared]
* [https://landscape.cncf.io/?fullscreen=yes OFFICIAL STACKS]
* [https://global-internet-map-2021.telegeography.com/ Global Internet Topology Map]
* DevSecOps :
* [https://landscape.cncf.io/?fullscreen=yes CNCF Official Landscape]
[[File:DSO-POC-V3.drawio.png]]
* [https://wikitech.wikimedia.org/wiki/Wikimedia_infrastructure Wikimedia Cloud Wiki]
* [https://openapm.io OpenAPM – SRE Tools]
* [https://access.redhat.com/downloads/content/package-browser RedHat Package Browser]
* [https://www.silkhom.com/barometre-2021-des-tjm-dans-informatique-digital Freelance IT Rates]
* [https://www.glassdoor.fr/salaire/Hays-Salaires-E10166.htm IT Salaries (Glassdoor)]


== High Availability (HA) with Corosync+Pacemaker ==
----
[[File:HA-REF.drawio.png]]


=== Typical Architecture ===
= Advanced: High-Availability, HPC & DevSecOps =


*Dual-room.
== High Availability with Corosync & Pacemaker ==
*IPMI LAN (fencing).
[[File:HA-REF.drawio.png|400px|HA Cluster Architecture]]
*NTP, DNS+DHCP+PXE+TFTP+HTTP (auto-provisioning), PROXY (updates or internal REPOSITORY).
 
*Choose 2+ node clusters.
* Multi-node or dual-room clusters for redundancy
*For 2-node, require COROSYNC 2-node config, 10-second staggered closing for stability. But for better stability choose 3+ nodes architecture.
* Use IPMI for fencing, provision via PXE/NTP/DNS/TFTP
*Allocate 4GB/base for DB resources. CPU resource requirements generally low.
* For 2-node clusters: stagger fencing for stability; 3+ nodes recommended
 
=== Common Resources Pattern ===
* Multipath storage, LUN, LVM, NFS
* User and process resources
* IP, DNS, Listener management


=== Typical Service Pattern ===
*Multipath
*LUN
*LVM (LVM resource)
*FS (FS resource)
*NFS (FS resource)
*User
*IP (IP resource)
*DNS name
*Process (Process resource)
*Listener (Listener resource)
== HPC ==
== HPC ==
[[File:HPC.drawio.png]]
[[File:HPC.drawio.png|400px|HPC Cluster Overview]]
== IT wage ==
 
*[http://jobsearchtech.about.com/od/educationfortechcareers/tp/HighestCerts.htm Best IT certifications]
== DevSecOps ==
*[https://www.silkhom.com/barometre-2021-des-tjm-dans-informatique-digital FREELANCE]
[[File:DSO-POC-V3.drawio.png|400px|DevSecOps Reference Design]]
*[http://www.journaldunet.com/solutions/emploi-rh/salaire-dans-l-informatique-hays IT]
 
----


== SRE ==
'''For more examples, guides, and scripts, visit [https://infocepo.com infocepo.com]. Contributions and suggestions welcome!'''
* [https://openapm.io SRE]
== REDHAT package browser ==
* [https://access.redhat.com/downloads/content/package-browser REDHAT package browser]

Latest revision as of 10:06, 17 July 2025

Discover cloud computing on infocepo.com

Discover Cloud Computing on infocepo.com

Welcome! This portal is designed for IT professionals, engineers, students, and enthusiasts who want to master cloud infrastructure, explore AI tools, and accelerate their IT skills through hands-on labs and open-source solutions.

Quick Start

  • Master cloud infrastructure: Practical guides and labs
  • Explore artificial intelligence: Trends and hands-on tools
  • Compare cloud providers: Kubernetes, AWS, OpenStack, and more
  • Develop expertise: Training, open-source, and real-world projects

AI & Cloud Tools

AI Assistants
Development & Model Tracking

Notable Open LLMs

(Last updated: 25/04/2025)

Model Description / Notable Features
ai-chat gemma3-12b, cost efficient
ai-chat-hq gemma3-27b, higher quality
ai-translate gemma2, temperature=0 (deterministic translation)
ai-summary qwen2.5, optimized for summarization
ai-code gemma3-27b, advanced code reasoning
ai-code-completion gemma3-1b, fast code suggestions
ai-parse gemma2-simpo, parsing & extraction
ai-RAG-FR qwen2.5, French RAG applications
mannix/gemma2-9b-simpo OllamaFunctions integration

Industry News & Trends

Training & Learning

Cloud Lab & Audit Projects

Cloud Lab Reference Diagram

Lab Project

Experiment with high-availability, cloud migration, and audit automation.

Cloud Audit

  • ServerDiff.sh – Bash script for auditing servers, tracking config drift, and checking environment consistency

Cloud Migration Example

Cloud Migration Diagram

Task Description Duration (days)
Audit infrastructure 82 services, automated via ServerDiff.sh 1.5
Diagram cloud architecture Visual design 1.5
Compliance check 2 clouds, 6 hypervisors, 6TB RAM 1.5
Install cloud platforms Deploy core cloud environments 1.0
Stability check Early operations 0.5
Automation study Automate deployment/tasks 1.5
Develop templates 6 templates, 8 envs, 2 clouds/OS 1.5
Migration diagram Process illustration 1.0
Write migration code 138 lines (see MigrationApp.sh) 1.5
Process stabilization Ensure repeatable migration 1.5
Cloud benchmarking Performance test vs legacy 1.5
Downtime calibration Per-migration time calculation 0.5
VM loading 82 VMs: OS, code, 2 IPs each 0.1
Total 15 man-days

Stability check

Action Expected Result
Power off one node All resources started
Power off/on all nodes simultaneously All resources started

Web Infrastructure & Best Practices

Web Architecture Reference

  • Favor minimal, flexible infrastructure
  • Track customer location via GDNS or similar
  • Use network load balancers (LVS, IPVS) for scaling
  • Compare prices and beware of vendor lock-in
  • For TLS: use HAProxy for fast frontend, Envoy for compatibility
  • Caching: Varnish, Apache Traffic Server for large content
  • Prefer open-source stacks and database caches (e.g. Memcached)
  • Use message queues and buffers for workload smoothing
  • For more examples: Wikimedia Cloud Architecture, System Design GitHub

Major Cloud Platforms: Feature Comparison

Function Kubernetes OpenStack AWS Bare-metal HPC CRM oVirt
Deployment Tools Helm, YAML, ArgoCD, Juju Ansible, Terraform, Juju CloudFormation, Terraform, Juju Ansible, Shell xCAT, Clush Ansible, Shell Ansible, Python
Bootstrap Method API API, PXE API PXE, IPMI PXE, IPMI PXE, IPMI PXE, API
Router Control Kube-router Router/Subnet API Route Table/Subnet API Linux, OVS xCAT Linux API
Firewall Control Istio, NetworkPolicy Security Groups API Security Group API Linux Firewall Linux Firewall Linux Firewall API
Network Virtualization VLAN, VxLAN, others VPC VPC OVS, Linux xCAT Linux API
DNS CoreDNS DNS-Nameserver Route 53 GDNS xCAT Linux API
Load Balancer Kube-proxy, LVS LVS Network Load Balancer LVS SLURM Ldirectord N/A
Storage Options Local, Cloud, PVC Swift, Cinder, Nova S3, EFS, EBS, FSx Swift, XFS, EXT4, RAID10 GPFS SAN NFS, SAN

Useful Cloud & IT Links

Advanced: High-Availability, HPC & DevSecOps

High Availability with Corosync & Pacemaker

HA Cluster Architecture

  • Multi-node or dual-room clusters for redundancy
  • Use IPMI for fencing, provision via PXE/NTP/DNS/TFTP
  • For 2-node clusters: stagger fencing for stability; 3+ nodes recommended

Common Resources Pattern

  • Multipath storage, LUN, LVM, NFS
  • User and process resources
  • IP, DNS, Listener management

HPC

HPC Cluster Overview

DevSecOps

DevSecOps Reference Design

For more examples, guides, and scripts, visit infocepo.com. Contributions and suggestions welcome!

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