VMware vSphere - Revision history

Leo at 23:16, 23 June 2019

2019-06-23T23:16:33Z

← Older revision		Revision as of 23:16, 23 June 2019
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	Update Manager snapshots VMs before applying an update (remediation) and rolls back if it fails. FT vms and VMs running v3 or earlier will not be snapshotted.		Update Manager snapshots VMs before applying an update (remediation) and rolls back if it fails. FT vms and VMs running v3 or earlier will not be snapshotted.

	~~udpate~~ manager can automatically update templates by turning it into a VM, updating the software on it, then converting it back into a template.		Uudpate manager can automatically update templates by turning it into a VM, updating the software on it, then converting it back into a template.

	vCenter Server Appliance delivers vSphere Update Manager as an optional service		vCenter Server Appliance delivers vSphere Update Manager as an optional service
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	* VMware hardware upgrade baseline		* VMware hardware upgrade baseline
	* Virtual appliance upgrade baseline		* Virtual appliance upgrade baseline

			== Issues ==
			=== Resetting ESXi SSH Account Lockout ===
			Failed login attempts via SSH will lock an account out based on the values defined in {{code\|Security.AccountLockFailures}} and {{code\|Security.AccountUnlockTime}}.

			You should see a notice in vSphere similar to: {{code\|Remote access for ESXi local user account 'root' has been locked for 900 seconds after N login attempts}}.

			Reset this by adjusting these two security parameters values under vSphere -> the ESXi Host -> 'Advanced System Settings'.

Leo at 01:25, 12 January 2019

2019-01-12T01:25:49Z

Show changes

Leo at 23:58, 9 January 2019

2019-01-09T23:58:53Z

← Older revision		Revision as of 23:58, 9 January 2019
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	* flat.vmdk - the actual disk data		* flat.vmdk - the actual disk data

	These virtual disks can also be made to link/map to another file or physical device using Raw Device Mapping:		These virtual disks can also be made to link/map to another file or physical device using Raw Device Mapping (RDM). RDM files cannot be saved on NFS datastores (?)
	* Virtual: vdm 62TB, a mapping/pointer to another vmdk file		* Virtual: vdm 62TB, a mapping/pointer to another vmdk file
	* Physical: vdmp 64TB, a mapping/pointer to a physical disk/lun		* Physical: vdmp 64TB, a mapping/pointer to a physical disk/lun
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	** Lazy: Writes 0s when requested		** Lazy: Writes 0s when requested
	** Eager: Writes 0s when disk is initialized		** Eager: Writes 0s when disk is initialized


			vSAN is a proprietry software that pools storage from multiple hosts into a single datastore. It requires that each host contribute to the pool using only SSDs, or SSDs and HDD combination. A minimum of 10% SSD must be present for it to contribute storage to the pool. The storage is mounted as an Object Store File System (OSFS)

			There is a maximum of 64 concurrent host access to shared storage. (same as the number of hosts per cluster)


			NFS 3 requires no_root_squash export option.
			NFS 4 has optional kerberos authentication as well as built-in file locking support.
			Best practice is to have multiple NICs on multiple switches to the NAS. Use IP Hash to improve throughput.


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	vCenter exposes an API to automate tasks.		vCenter exposes an API to automate tasks.

			=== Installation ===
			Can be installed on Windows, Linux, or MacOS using their installer package. This requires at least one ESXi server already set up.

			Once installed, the appliance will deploy onto the ESXi server and can later be managed using the VMware Appliance Management Interface (VAMI).


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	=== Permissions ===		=== Permissions ===
	Permissions defines what user or group has access to what role and on what object. Users and groups can be local, or from an identity source.		Permissions defines what user or group has access to what role and on what object. Users and groups can be local, or from an identity source.

			Permissions on an object takes the following presidence:
			# Explicit definitions on objects
			# Definitions by groups
			# Definitions by user




	~~VAMI~~
	~~VMware Appliance Management~~


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	- virtual switch for an entire data center, up to 2000 hosts		- virtual switch for an entire data center, up to 2000 hosts
	- switch itself is saved on vCenter, and is created on each ESXi host as required		- switch itself is saved on vCenter, and is created on each ESXi host as required
			- supports Link Aggregation Control Protocol (LACP) for teaming links
	* vSphere Standard Switches (VSS)		* vSphere Standard Switches (VSS)
	- configuration only on one ESXi host.		- configuration only on one ESXi host.

			Standard switch has the ability to move layer 2 traffic between virtual machines internally.
			~256~ 4096 virtual switches per host, 1016 active ports per host


			Connection types:
			# virtual machine port group, used for virtual machines only
			# vmkernel - used by the hypervisor; vMotion, iSCSI, NFS, or Fault Tolerance logging (and management on ESXi).
			#* port ID starts with 'vmk'. eg: vmk0
			# uplink ports - connects to real NIC on the physical hardware

			VMware recommends isolating management, vmotion, iSCSI, datastore traffic

	~~VMPG - virtual machine port group~~		Switches can have:
	~~vmkernel - management traffic, used by the hypervisor~~		# No uplinks
			# One uplink
			# Multiple uplinks (automatically sets up NIC teaming)

	port ~~ID is vmk0~~		=== Security Policies ===
			Promiscuous mode: Forwards all switch traffic regardless of destination to this port.
			MAC Address Changes: Allow guest to modify MAC address of the virtual NIC.
			Forged Transmits: Accept traffic with frames that contain a different MAC address than that of the assigned NIC MAC address.

	~~uplink~~		Traffic Shaping allows you to set bandwidth restrictions by specifying the average bandwidth or peak bandwidth (absolute maximum), with the option of burst bandwidth size. Outbound is free, but Inbound traffic shaping requires VDS which costs.

			Teaming and failover
			- turn off notify if using Microsfot Network Load Balancing (NLB)


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	OVA - Open Virtualization Appliance		OVA - Open Virtualization Appliance

	An existing VM that is used as a source copy for new VMs. The .vmx file gets renamed to a .vmtx file.		An existing VM that is used as a source copy (ie. master copy) for new VMs. A new template can be created from a powered down VM. The .vmx file gets renamed to a .vmtx file.


	== Content Library ==		== Content Library ==
	A feature since 6.5 that allows VM templates to be shared across different vSphere.		A feature since 6.5 that allows VM templates to be shared across different vSphere.

Leo at 00:21, 9 January 2019

2019-01-09T00:21:26Z

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Leo at 22:46, 7 January 2019

2019-01-07T22:46:45Z

@@ Line 1: / Line 1: @@
-vSphere is a server virtualization platform from VMware. It is not an operating system or application per se. The name covers a range of technologies by VMWare since version 4 of their software (eg. ESX server, VMWare Infrastructure)
+vSphere is a server virtualization platform from VMware. It is not an operating system or application per se. The name covers a range of technologies under the VMWare Infrastructure umbrella since version 4.
 == Clients ==
 * Adobe Flex/Flash
-* HTML5 - Not fully featured yet
+* HTML5 - has 97% of features. vsphere advanced configuration not there yet. next version should be feature complete
 * vSphere Client - Deprecated windows client

Leo at 18:31, 7 January 2019

2019-01-07T18:31:49Z

@@ Line 9: / Line 9: @@
 == Networking ==
-* vSphere Distributed Switches (vds)
+* vSphere Distributed Switches (VDS)
-* vSphere Standard Switches (vss)
+* vSphere Standard Switches (VSS)

Leo: Created page with "vSphere is a server virtualization platform from VMware. It is not an operating system or application per se. The name covers a range of technologies by VMWare since version 4..."

2019-01-07T18:00:33Z

Created page with "vSphere is a server virtualization platform from VMware. It is not an operating system or application per se. The name covers a range of technologies by VMWare since version 4..."

New page

vSphere is a server virtualization platform from VMware. It is not an operating system or application per se. The name covers a range of technologies by VMWare since version 4 of their software (eg. ESX server, VMWare Infrastructure)

vCenter controls ESXi hosts. ESXi runs any number of VMs. Total 1024 VMs per host. 768 CPUs per ESXi host?

== Clients ==
* Adobe Flex/Flash
* HTML5 - Not fully featured yet
* vSphere Client - Deprecated windows client

== Networking ==
* vSphere Distributed Switches (vds)
* vSphere Standard Switches (vss)