Tech-Gen

  🛠️ ESXi Host Troubleshooting Checklist (With Complete Log Locations) ✅ 1. Host Status & Connectivity Check host state in vCenter (Connected / Not Responding / Disconnected) Review CPU, RAM, and datastore usage Validate HA/DRS recommendations ✅ 2. Hardware Health Monitor hardware sensors (CPU, DIMMs, fans, PSU, RAID) Check RAID controller logs via vendor tools View hardware status in: vCenter → Monitor → Hardware Health DCUI → Hardware Status ✅ 3. Network Validation Verify vSwitches, Port Groups, NIC teaming, VLAN tagging Check vmkernel ports (mgmt, vMotion, iSCSI, vSAN) Test reachability using: Shell vmkping < IP > Show more lines Validate physical NIC status and link speed ✅ 4. Storage & Datastore Checks Confirm datastore accessibility Rescan storage adapters (iSCSI/FC/NFS) Validate multipathing (Round Robin / Fixed / MRU) Check datastore latency with esxtop ✅ **5. Critical Logs & Their Locations (Full List) Here are key ESXi log files that every VMware adm...

  vCenter Troubleshooting Tips, Common Issues & Log Locations 🚀 1. General Troubleshooting Approach A. Check service health first For vCenter Server Appliance (VCSA): Shell https : / / < vcenter - FQDN > : 5480 Show more lines Go to Services → Health to verify: vCenter Server ESXi hosts vSphere Client DNS, NTP, DB connections vpxd, vpxd-svcs, vsphere-ui B. DNS & NTP checks vCenter is highly dependent on correct DNS & time sync. Check: Shell nslookup < vcenter - fqdn > nslookup < esxi - host - fqdn > Show more lines Time drift > 5 minutes causes: Login failures vpxd crashes PSC authentication issues C. Check storage/database health Slow DB/storage = UI slow, tasks hung. For VCSA: Shell df - h du - sh / storage / log / * / var / log Show more lines Free up space if partitions hit >80%. D. Restart critical services safely On VCSA: Shell service - control - - status service - control - - stop - - all service - control - - start - - all ...