Virtualisation Tips & Tricks

Issue VMs unable to get IP address from the DHCP server defined on NSX Segment. On NSX Manager UI Error Similar to Below are seen: Cause The DHCP server reported exhaustion because stale lease entries were retained in the lease table. These entries blocked allocation of IPs even though some were not actively in use… Read more: NSX DHCP Pool Exhaustion

After you install NSX, the manager nodes and cluster have self-signed certificates. Replace the self-signed certificates with a CA-signed certificate and use a single common CA-signed certificate with a SAN (Subject Alternative Name) that matches all the nodes and the VIP for the cluster.  Prerequisites Procedure We will show how we can do this without any… Read more: NSX Manager – Replace Certificates

VMware NSX has a preconfigured password expiration policy of 90 days. When the password expiration day is near, a notification is displayed in the Web interface. There are 3 preconfigured local users: admin, audit, and root. All passwords have to be changed after 90 days https://docs.vmware.com/en/VMware-NSX/4.2/installation/GUID-89E9BD91-6FD4-481A-A76F-7A20DB5B916C.html Please keep in mind that not only the password… Read more: Remove NSX Password Expiration

Packet Capture Edge Traffic on ESXi Find NIC Where Traffic Flows Method A Login to ESXi shell and use command  ESXTOP → N to find NIC for Edge node. Method B Login to ESXi shell and use commands: “Port ID:” and “Team Uplink:” will give the respective switchport and uplink. Once the Switchport and vmnic is figured,… Read more: Troubleshoot Network Using Packet Capture

We had a project where we replace the old hosts with the new ones and use the same IP addresses. Everything was fine until we put the new hosts back into the cluster and NSX preparations task kick in. Then NSX manager gives as validation error.  It states: “26210: Node duo-11 with 10.10.10.1 already exists”.… Read more: Troubleshooting NSX “Transport node with IP already exists”