Information Technology Reference
In-Depth Information
may not be available. For example, VUM is reliant on vCenter, so if the host isn't connected to
a licensed vCenter, then an alternate method to upgrade the host must be used.
Master It
Without using VUM, how else can you upgrade an existing host?
Solution
You can grab the CD install media and run an interactive upgrade on the host.
Or you can use the inherent command-line tool on the hosts' themselves: esxcli soft-
ware vib update (see VMware Knowledge Base article 2008939 for full details) or esx-
cli software vib install to patch them with individual VIBs.
Install logging collectors.
vSphere includes two different logging tools for the ESXi hosts.
The ESXi Dump Collector takes kernel dumps from the hosts, and the Syslog Collector can
centrally store the host's log i les.
Master It
You have just started a new job as the vSphere administrator at a company.
The company hasn't previously centralized the hosts' logs and you decide you want to
collect them, and so you want to install the vSphere Syslog Collector tool and the ESXi
Dump Collector tool as well. How do you install them on the company's vCSA instance?
Solution
The Syslog Collector and ESXi Dump Collector are already included in vCSA
and enabled by default. You should log into the vCSA console and check that the ser-
vices are running and adjust the core dump's repository so it's large enough for their
environment.
Coni gure hosts for centralized logging.
To make use of the ESXi Dump Collector or the
Syslog Collector tools, you must coni gure each host to point to the centralized loggers.
Master It
List the ways you can coni gure your hosts for centralized logging.
Solution
You can send core dumps to the ESXi Dump Collector by using esxcli
system coredump at each host's command line.
Use the Host Proi les feature in vCenter to propagate the same setting across multiple
hosts, or continue to use the CLI on each host.
Use the Web Client to coni gure each host via its advanced settings under syslog
.global.
Set each host via the CLI with esxcli system syslog.
Use the Host Proi les feature in vCenter to propagate the same setting across multiple
hosts, or continue to use one of the previous two methods on each host.
Chapter 5: Creating and Confi guring Virtual Networks
Identify the components of virtual networking.
Virtual networking is a blend of virtual
switches, physical switches, VLANs, physical network adapters, virtual adapters, uplinks,
NIC teaming, VMs, and port groups.
Master It
What factors contribute to the design of a virtual network and the compo-
nents involved?
Solution
Many factors contribute to a virtual network design. The number of physical
network adapters in each ESXi host, using vSphere Standard Switches versus vSphere
Distributed Switches, the presence or use of VLANs in the environment, the existing
