VCF 4.2 On VxRAIL – ‘Validate Thumbprints’
In order to prevent the opportunity of a Man In The Middle (MiTM) attack VMware have introduced a security feature which validates the SSH RSA fingerprint and SSL thumbprint of […]
VxRail – Single vCenter Managing Multiple VxRail Clusters
‘Can a single vCenter server support/manage multiple VxRail clusters?’ Let me first explain the two methods of deploying a vCenter server to support a VxRail cluster: VxRail Managed vCenter Server […]
Dell EMC VxRail – Pre-upgrade Health Check Tool
VxVerify – Pre-upgrade Health Check Tool VxVerify is an incredibly useful tool to have at your disposal while working with VxRail. Complimentary to the native VxRail manager checks VxVerify performs […]
Dell EMC Networking – Configuring Layer-2 Mode
Switch model: S4048-ON Code Version: 9.10(0.1) 48 Ten GigabitEthernet/IEEE 802.3 interface(s)6 Forty GigabitEthernet/IEEE 802.3 interface(s) Brief detail in relation to setting Layer-2 switchport mode on all 48x10GbE ethernet interfaces to support L2 VLAN based networking: cork-vxrail1-tor#conf tcork-vxrail1-tor(conf)#interface range tengigabitethernet 1/1-1/48cork-vxrail1-tor(conf-if-range-te-1/1-1/48)#switchportcork-vxrail1-tor(conf-if-range-te-1/1-1/48)#no shutcork-vxrail1-tor(conf-if-range-te-1/1-1/48)#exitcork-vxrail1-tor(conf)#exitcork-vxrail1-tor# To revert to non switchport mode: cork-vxrail1-tor#conf tcork-vxrail1-tor(conf)#interface range tengigabitethernet 1/1-1/48cork-vxrail1-tor(conf-if-range-te-1/1-1/48)#no switchportcork-vxrail1-tor(conf-if-range-te-1/1-1/48)#exitcork-vxrail1-tor(conf)#exitcork-vxrail1-tor#
VCF 4.x – ‘Failed To Assign Role Admin TO ESXi User’
I hit the following issue recently while creating a VCF 4.1 ‘NSX-T VI Workload Domain‘ for a VCF on VxRail solution: Referring to the VMware VCF 4.0.1 Release Notes (extract): VI workload domain creation or expansion operations fail If there is a mismatch between the letter case (upper or lower) of an ESXi host’s FQDN and the FQDN used when […]
Dell EMC Networking – Configuring MTU
Switch model: S4048-ON Code Version: 9.10(0.1) 48 Ten GigabitEthernet/IEEE 802.3 interface(s)6 Forty GigabitEthernet/IEEE 802.3 interface(s) Brief detail in relation to setting an MTU (Maximum Transmission Unit) value on all 48x10GbE ethernet interfaces to support Jumbo Frames: cork-vxrail1-tor#conf tcork-vxrail1-tor(conf)#interface range tengigabitethernet 1/1-1/48cork-vxrail1-tor(conf-if-range-te-1/1-1/48)#mtu 9216cork-vxrail1-tor(conf-if-range-te-1/1-1/48)#exitcork-vxrail1-tor(conf)#exitcork-vxrail1-tor#show interfaces tengigabitethernet 1/1 | grep MTUMTU 9216 bytes, IP MTU 9198 bytescork-vxrail1-tor# To revert to default MTU value […]
VxRail 7.0 – Useful Log File Information
The following log files can be accessed either via console or SSH to VxRail Manager. Useful VxRail Manager 7.0.010+ Log Files Note: SLES15 is the OS used for VxRail Manager. Monitor VxRail bring-up logs: dayone.log , short.term.log & firstboot.log: dayone.log – detailed information in relation to initial first run configuration. (/var/log/microservice_log/dayone.log) short.term.log – micro services related information. (/var/log/microservice_log/short.term.log) firstboot.log – detailed information […]
VxRail 7.0 – Install Notes
For VxRail 4.7 please see earlier post: VxRail 4.7 – Install Notes Note: this is an example for reference only please use the VxRail installation procedures provided by Dell EMC. […]
VxRail – SSH SERVER ‘2048 RSA Public Key’
VxRail code release 4.7.410 and above uses a 2048-bit RSA Public Key for the SSH Server on VxRail Manager . This replaces the 1024-bit DSA Public Key previously used. Image […]
VMware ESXi – Monitoring Tasks VIA CLI
The following post details how to view task information via CLI on an ESXi host. Task details such as: Snapshot operations, for example create/delete/consolidate Clone operations As can be seen […]
iDrac – UEFI0315 POST ERROR
UEFI0315: Unable to process an iDRAC request to configure Secure Boot keys because of a communication error between BIOS and iDRAC. Encountered the above error on a VxRail 13G host […]
VCF 4.1 ON VXRAIL – REDUCE A CLUSTER (REMOVE NODE)
In a previous post I provided an example walk-through of the process for adding a new host to an existing VCF 4.1 on VxRail ‘VI Workload Domain (WLD)’: https://davidring.ie/2020/12/16/vcf-4-1-on-vxrail-expand-a-cluster-add-node/ In this post I will provide an example walk-through of the process for removing a host from a VCF 4.1 on VxRail ‘VI Workload Domain (WLD)’. There are various reasons you may wish to perform this task […]
VCF 4.1 ON VXRAIL – EXPAND A CLUSTER (ADD NODE)
In this post I will provide an example walk-through of the process for adding a new VxRail node to an existing VCF on VxRail ‘VI Workload Domain (WLD)’. At a high level there are […]
VCF 4.1 ON VXRAIL – “HOSTKEY HAS BEEN CHANGED”
Upgrading VxRail Manager to 7.0.100 fails with message: VxRail component upgrade failed with error HostKey has been changed This is a known issue and expected behavior as part of the […]
VCF ON VXRAIL 4.1 – NSX-T EDGE AUTOMATION
Since the release of VCF 4.0 NSX-T is now used exclusively across both the Mgmt and VI Workload Domains (WLDs). As per previous releases the Management WLD cluster requires a […]
VCF ON VXRAIL – NSX-T PASSWORD MANAGEMENT
By default NSX-T user passwords (NSX-T Manager: root & admin | NSX-T Edge: root, admin & audit) expire after 90 days. In a VCF On VxRail environment it is good […]
VCF ON VXRAIL – NSX-T MANAGER ENABLE SSH
By default SSH is disabled on the NSX-T managers. To enable SSH open the NSX-T Manager VM console from the vSphere client: Log in to the CLI as admin and […]
VCF ON VXRAIL – DFW EXCLUSION LISTS
As per VVD guidance the following layer2 management VMs are excluded from any distributed firewall rules in a VCF On VxRail solution: VxRail Manager WLD VCSA Appliances NSX Managers SDDC […]
VCF ON VXRAIL 4.1 – NEW ACCOUNT ‘ADMIN@LOCAL’
VCF 4.1 introduced a new account ‘admin@local’ which is configured as part of a greenfield installation of VCF. If you have upgraded to VCF 4.1 then you will encounter the […]
VCF 4.0 On VxRail – “Hostkey Has Been Changed”
Upgrading VxRail Manager to 7.0.010 fails with message: VxRail component upgrade failed with error HostKey has been changed This is a known issue and expected behavior as part of the […]
