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I just gave someone the advice without being asked (ignoring all i know about „nonviolent communication“ – sorry for that!) to include a „Scope“ in his blog: he wrote an article how to setup a Raspberry-Pi but skipped all security considerations about how to setup a productive computer system. I assume many readers of his blog don’t have a clue how to harden a linux-operated Raspberry-Pi. I assume: those readers need at least a hint: „there are additional steps required“ or even better, concrete advice: „what to do next“ – maybe in a follow-up article. How many people are part of a bot-net since the’veRead More →

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When deploying Virtual-Machines by OVF/OVA-Files in automated manner, eg. using PowerShell of Terraform, it’s crucial to set all individual deployment parameters using the provisioning system. Discover the available Properties using PowerShell OFV-Tool Using PowerShell Create a vCenter-Connection Retrieve the OVF-Config-Object Display all contained Properties („=Keys“) Deployment-Option? Using OVF-Tool OVFTOOL.EXE, provided by VMware (Download OVFTOOL) allows to inspect existing OVA/OFV-Files, too.Read More →

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Of course, every release of an linux-distribution has to change the way very basic network settings are configured. 😉 Ubuntu 20.04 Server LTS to be fair: „netplan“ has been in place since at least release 17.10 the „subiquity“-tool which has written the yaml-file has been confusing me… Step 1: Figure out – which IP/DNS-Settings where set by DHCP Step 2: Disable (if required) automation tools – here „subiquity“ This is YAML: Optional: Try a temporarily YAML-File before Apply safeguard if you are using a ssh-connection Roll back, after a Timeout Step 3: Edit/Apply NetPlan Config ApplyRead More →

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2/3/4-Node Cluster no Fabric-Interconnects (FIs) Edge-Servers connected to LAN-Switches „back-to-Back“-Option for 2-Node Cluster only „RF2“-redundancy    Read More →

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Beitrag ansehen Performance All-NVMe Cluster HyperFlex Acceleration Engine  Scaliabilty 2:1 Compute-to-Converged Nodes-Ratio Data Protection Stretched Cluster (Metro Availability) „Cisco HyperFlex Premier“-Cisco Data Center Enterprise Agreement TierRead More →

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Use-Case Investment-Protection VM-Migration Fibre-Channel   Ethernet iSCSI FCoE FC-Setup VSAN WWNN/WWPN-Pool vHBA templates FC-SAN Zoning / LUN-Masking FC-Switch Directly connected FC-Storage supported zoning within UCS-FI HyperFlex SAN Connectivity Policy iSCSI Setup VLAN MAC-Pool/vNIC-Template(s) HyperFlex LAN-Connectivity Policy  Read More →