Virtualisation @ CIT

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10 Δεκ 2013 (πριν από 3 χρόνια και 11 μήνες)

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Virtualisation @ CIT

HEAnet National Networking Conference 2009


Aidan McDonald

Programme

1. Introduction


2. VMWare ESX


3. SAN and ESX


4. Today and Future


5. Pitfalls


6. Additional work in CIT

1. Introduction

Introduction


Instead of CIT planning a Virtualisation project,
CIT’s Infrastructure evolved from various small
IT initiatives in the college.


Now, it represents a sizeable virtualised
infrastructure and our reliance and dependency
on it has grown
enormously.


Administration, student services, IT services,
academic departments all now depend on this
infrastructure.


In the beginning ….


Cisco Academy’s Netlab
System
-

introduced support
for virtual PCs in the pods
using VMWare GSX, capable
of supporting 8 virtual PCs per
server.


VM Workstation used in
network labs, to allow students
experience installing OS’s and
configuring administration
settings without effecting
underlying lab PC.


Approached VMWare to
customise ESX for Netlab


introduced to our neighbours in
Ovens, MD ex
-
CIT graduate

VMware ESX


Initially, installed ESX for
research, had no interest in
large scale virtualisation
agenda.


CIT became a VMware
university allowing academic
licensing to be used for
creating ESX servers.


Research includes
virtualising an existing server


i.e. our TACACS server, as
well as creating some new
servers for NM (e.g. Nagios,
Squid, DNS);

PowerEdge
2950
ESX SERVER
1
CIT’s Cloud
Computer Dept. SAN


Initial ESX server was
running out of local
disk space.


School of Computing
invested in a SAN.


EMC Clarion CX300


Initially used in
computing as storage

PowerEdge
2950
6
7
5
3
4
1
2
0
PowerEdge
2950
E
M
C
2
E
M
C
2
VM ESX CLUSTER
Virtual Infrastructure Center Server
ESX Management Server
SAN
ESX SERVER
1
DISK STORE
2
DISK STORE
1
CIT’s Cloud
Fiber channel switch


A colleague in Finance
managed an internal WWW
server which crashed.


Convinced him to buy fibre
channel switch instead of new
server, if we hosted
finance.cit.ie


1
st

Production
server


An upgrade to phone
management server required
new server


we took this
server as our 2
nd

ESX server
and virtualised.


Provided high speed link to
SAN for storage and retrieval
of data from VMware servers.

6
7
5
3
4
1
2
0
PowerEdge
2950
E
M
C
2
E
M
C
2
VM ESX CLUSTER
Virtual Infrastructure Center Server
ESX Management Server
SAN
ESX SERVER
1
DISK STORE
2
DISK STORE
1
1
2
3
4
5
6
11
12
8
10
7
8
13
14
15
16
17
18
23
24
21
22
19
20
C

I

S

C

O
STATUS
P
/
S
FAN
CONSOLE
MGMT

10
/
100
MDS

9124

MULTILAYER

FABRIC

SWITCH
DS
-
C
9124
-
K
9
RESET
1
2
3
4
5
6
11
12
8
10
7
8
13
14
15
16
17
18
23
24
21
22
19
20
C

I

S

C

O
STATUS
P
/
S
FAN
CONSOLE
MGMT

10
/
100
MDS

9124

MULTILAYER

FABRIC

SWITCH
DS
-
C
9124
-
K
9
RESET
PowerEdge
2950
ESX SERVER
2
PowerEdge
2950
CIT’s Cloud
Value of VM


AD Project


College undertook to
centralise AD


13
different departmental
ADs to two central ones


Staff and Student


Impossible to build new,
parallel infrastructure
while old existed


Virtualised the whole old
AD estate, all 13 ADs,
and in this test
environment, mocked up
the AD migration


Implemented VMMotion

6
7
5
3
4
1
2
0
PowerEdge
2950
E
M
C
2
E
M
C
2
VM ESX CLUSTER
Virtual Infrastructure Center Server
ESX Management Server
SAN
ESX SERVER
1
DISK STORE
2
DISK STORE
1
1
2
3
4
5
6
11
12
8
10
7
8
13
14
15
16
17
18
23
24
21
22
19
20
C

I

S

C

O
STATUS
P
/
S
FAN
CONSOLE
MGMT

10
/
100
MDS

9124

MULTILAYER

FABRIC

SWITCH
DS
-
C
9124
-
K
9
RESET
1
2
3
4
5
6
11
12
8
10
7
8
13
14
15
16
17
18
23
24
21
22
19
20
C

I

S

C

O
STATUS
P
/
S
FAN
CONSOLE
MGMT

10
/
100
MDS

9124

MULTILAYER

FABRIC

SWITCH
DS
-
C
9124
-
K
9
RESET
PowerEdge
2950
ESX SERVER
2
PowerEdge
2950
CIT’s Cloud
PowerEdge
R900
ESX SERVER
3
CIT Today


Server consolidation


ban on new physical servers


SAN upgrade, CX400


i
-
SCSI, mirroring


4 ESX Servers, 63 VMs, 15Tb Disk, in two centers

Pitfalls


Server for server sake


VM Servers/machines have an undoubted
value and can be created instantaneously


However, there is a danger in creating
VMs for the sake of it


This can lead to unstructured and
unmanageable growth of virtualisation
infrastructure


Network admin looses visibility of “the
port” which servers attached


vSwitch

Future


VSphere


CIT plans to upgrade its Virtualisation Infrastructure to VSphere
4.0 in 2010


VDI


CIT plans to investigate VDI as a means of rapid desktop
deployment


It will be also used to deploy individual desktops to Staff and
Students


Most likely pioneered in Dept of Computing and IT Services


Project Students and CIT’s Open Access facility for Students
could benefit.


EMC/VMWare/CIT Academy


CIT over the years has enjoyed good relations with EMC and
VMware


Recently CIT have created a VMware Academy


Built a VMware Training Infrastructure to support delivery of
VMware courses


Plans to offer a number of courses including the VCP in 2010


Questions


Aidan McDonald


IT Network Manager

(
aidan.mcdonald@cit.ie
)


Aaron Krawczyk


Virtualisation Administrator

(
aaron.krawczyk@cit.ie
)


Pat McCarthy


VMWare Academy Coordinator

(
pat.mccarthy@cit.ie
)


Thank You