The Penguins Have Landed - the Conference Exchange · The Penguins Have Landed Author: Mike Giglio...
Transcript of The Penguins Have Landed - the Conference Exchange · The Penguins Have Landed Author: Mike Giglio...
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The Penguins Have Landed-
Changes and Improvements
with Linux on Z at Shelter
Insurance
Shelter Insurance © 2011
Session 09754
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Shelter Insurance
• Midwest - 13 states
• Property and Casualty
• Life
• Reinsurance
• Other holdings
Linux on System z Shelter Insurance © 2011
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Linux on System z Shelter Insurance © 2011
What‟s in a Name?
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Linux on System z Shelter Insurance © 2011
Or maybe…
• Herding z Penguins
• Hording the Penguins
• Penguin Roundup
• Who‟s your Penguin?
• Penguins o‟ Plenty
• Spanking the Penguins
• Penguins R Us
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Linux on System z Shelter Insurance © 2011
The Penguins Have Landed
• Why Penguins (Linux)
• Nesting the Penguins
• Feeding the Penguins
• Protecting the Penguins
• Working the Penguins
• Hatching new Penguins
• Penguin Tales
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Why Penguins
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Linux on System z Shelter Insurance © 2011
Why Penguins…
• Linux on System z
– Ten year old
technology
– Linux virtual servers
under z/VM or in an
LPAR
• Virtualization
– More with less
– Extreme Virtualization
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Linux on System z Shelter Insurance © 2011
…Why Penguins…
• Software Licensing – IBM Processor Value
Units (PVU)
– Per “core”
– Distributed servers • Many servers
• Many cores
– System z servers • Few physical servers,
cores
• Many servers per core
• Power and cooling 8 8 8 8
3
PROD
DEV
TEST
STAGE
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Linux on System z Shelter Insurance © 2011
…Why Penguins
• Really cool DR Model
– Recover entire system
– IPL Hypervisor (z/VM)
– Customize environment
– IPL Servers
– Faster Recovery Time
Objective
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Linux on System z Shelter Insurance © 2011
…Why Penguins
• Architectural
– Application closer to data
– Applications closer to each
other
– Positioning for SOA
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Nesting the Penguins
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Linux on System z Shelter Insurance © 2011
Nesting the Penguins
• System z Hardware
– z/OS & z/VM support
– Linux support
• Networking
• Virtualization
– z/VM Hypervisor
– CPU
– DASD
– Memory
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Linux on System z Shelter Insurance © 2011
z/VM Hypervisor
• Evolved from IBM‟s VM/370
• Forty years of evolution
• Other uses – Virtualize IBM Virtual
Storage Extended (VSE)
– PROFS / OfficeVision (e-mail of 1980s and 1990s)
– Application development
– Run-time environment
– Predecessor to PR/SM
z/VM ONLINE
/ VV VVV MM MM
/ VV VVV MMM MMM
ZZZZZZ / VV VVV MMMM MMMM
ZZ / VV VVV MM MM MM MM
ZZ / VV VVV MM MMM MM
ZZ / VVVVV MM M MM
ZZ / VVV MM MM
ZZZZZZ / V MM MM
built on IBM Virtualization Technology
Fill in your USERID and PASSWORD and press ENTER
(Your password will not appear when you type it)
USERID ===>
PASSWORD ===>
COMMAND ===>
RUNNING
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Linux on System z Shelter Insurance © 2011
z10 Processor
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Linux on System z Shelter Insurance © 2011
z10 Processor
GP GP GP zIIP ICF
MVS Images in LPARs
PR
OD
DE
VL
TE
ST
Couplin
g
Fa
cility
Disk Tape
zVM Image in LPAR
IFL IFL
88 GB Memory
HiperSocket
IFL GP
Net
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Linux on System z Shelter Insurance © 2011
z10 Processor
MVS Images in LPARs
PROD
zVM Image in LPAR
HiperSocket
IMS
DB
2
GP GP GP zIIP ICF IFL IFL IFL GP
88 GB Memory
Disk Tape Net
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Linux on System z Shelter Insurance © 2011
z10 Processor
MVS Images in LPARs
PROD
zVM Image in LPAR
HiperSocket
VSWITCH
IMS
DB
2
GP GP GP zIIP ICF IFL IFL IFL GP
88 GB Memory
Disk Tape Net
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Feeding the Penguins
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Linux on System z Shelter Insurance © 2011
Feeding the Penguins…
• SLES 11 Linux for System z
– Build Template (Gold) servers
• DASD Sized by application type
– Six Gigabyte – basic
– Thirteen gigabyte – Modest Application
– Twenty-seven Gigabyte – Larger Application
– Clone and grow
• Six or 20 gigabyte increments
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Linux on System z Shelter Insurance © 2011
…Feeding the Penguins…
• Cloning
– SYSTEM FILE – list of unique
attributes of the system –
gateway, subnet mask, etc.
– SERVER FILE – list of servers
and unique attributes
– Copy virtual disks of base server
to new server
– Provision a new virtual server in
five to ten minutes
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Linux on System z Shelter Insurance © 2011
SERVER FILE
NAME IP-unique-information
xxx1 …………………
ABC1 …………………
SYS2 …………………
MMMn …………………
etc …………………
MY INFO file on
EACH server
Linux
File System /etc
Configuration
files
1)
Manually
Edit
File z/VM
Linux
DR Unique Values
MY INFO file on
EACH server MY INFO file on
EACH server MY INFO file on
EACH server MY INFO file on
EACH server
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Protecting the Penguins
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Linux on System z Shelter Insurance © 2011
Protecting the Penguins
• Monitoring
– z/VM Hypervisor
– Linux Servers
• Alerts
• Storage Management
• Penguin Security
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Linux on System z Shelter Insurance © 2011
Monitoring…
• You need a tool
– You have numerous
options
• Choose carefully
– You do not get what
you do not pay for
– Reconcile the
difference between
virtual and real
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Linux on System z Shelter Insurance © 2011
How full is my bucket?
Real Bucket
Actual Available CPU
35% used
Virtual Buckets
Perceived Used CPU
100
%
100
%
100
% 10% 5% 20%
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Linux on System z Shelter Insurance © 2011
Alerts…
• We need to know when
– Server is down
– Server is looping
– File system is almost full
– System storage is almost full
– System is too busy
– Other bad stuff
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Linux on System z Shelter Insurance © 2011
Fix if
possible
Incident and
Notification
Enterprise Framework
Generate Alert
Generating an Alert
@#
$%
&*
VM/Linux Monitor
Detect the “out-of-bounds”
condition
SNMP
Auto
mate
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Linux on System z Shelter Insurance © 2011
Penguin Storage
• z/OS Management
– All existing processes
– Allocating and
Managing DASD
volumes
– Backup
– Restore
– Recovery
• z/VM Management
– Assign DASD volumes
to servers
– Monitor
• Linux management
– Logical Volume
Manager (LVM)
– Dynamically enlarge
server application
storage
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Linux on System z Shelter Insurance © 2011
Penguin Security
• z/VM Security
– RACF for VM
– Independent database
– Admin use only
– Logon to 3270 (green
screen)
• Active Directory (AD)
– Integrate Linux servers
into existing AD
environment
– Group structure
• Developer
• Server Admin
• System Admin
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Samba / Active Directory
Integration
Linux on System z Shelter Insurance © 2011
Linux
File System
SAMBA
server
/opt
EAR/JAR
Logs
Code
Config
Domain
Controllers
Validate
access to
resources
WAS Admin
Developer
Linux Admin
Read
Write
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Working the Penguins
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Linux on System z Shelter Insurance © 2011
Working the Penguins…
• WebSphere Application Server (WAS)
– Home grown applications
– Vendor applications
• Provisioning
– Environments / number of servers
– Size – depending upon application
– Clone and Deploy servers
– Install / verify / implement applications
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Linux on System z Shelter Insurance © 2011
Penguin Jobs…
• “Shelter Search”
– WAS 6.1 application
– Locally Developed
– Insured / Agent search
– Multiple environments
– Previously multiple Wintel servers
– Moved all environments to Linux 2010
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Linux on System z Shelter Insurance © 2011
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Data Flow
HTTP
z10 Processor
MVS Images in LPARs
PROD
zVM Image in LPAR
HiperSocket
VSWITCH
IMS
DB
2
GP GP GP zIIP ICF IFL IFL
??
IFL GP
88 GB Memory
Disk Tape Ne
t
Linux on System z Shelter Insurance © 2010
35 Linux on System z Shelter Insurance © 2011
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Linux on System z Shelter Insurance © 2011
Penguin Jobs…
• Insurance Verification System
– WAS 7 application
– Internally Developed
– Law enforcement verification
– Nevada June, 2011
– Oklahoma „soon‟
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Hatching New Penguins
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Linux on System z Shelter Insurance © 2011
Hatching new Penguins
• More workload moving to Linux on z
– WAS
• New applications
• Move existing apps from Intel platform
• IBM recommendations
– Best fit
– Good fit
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New Penguin Jobs
• Billing System
– Vendor application
– WebSphere
– Communications
Framework
– 1Q 2012?
Linux on System z Shelter Insurance © 2011
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New Penguin Jobs
• Common Services (CSA)
– WebSphere
– Customer Access
– eCommerce
– 4Q 2011?
• SOA Enablement
– WebSphere Registry and
Repository
– WebSphere Enterprise
Service Bus
– ?20??
Linux on System z Shelter Insurance © 2011
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Linux on System z Shelter Insurance © 2011
Best Fit Application Workloads*
• WebSphere MQ Series
• DB2 Connect
• CICS Transaction Gateway , IMS Connect for Java
• WebSphere and JAVA applications development
• WebSphere - Application Server (WAS), Portal
• Domino / Lotus Notes
• Network Infrastructure: FTP, NFS, DNS etc..,
• Applications requiring top end disaster recovery model
• Virtualization and Security Services
• InfoSphere/Cognos
*Bill Reeder – IBM Linux for System z Sales and Strategy
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Linux on System z Shelter Insurance © 2011
Good Fit Application Workloads*
• DB2 (LUW)
• Apache web serving
• SAMBA
• TIM/TAM (LDAP Services)
• TSM
*Bill Reeder – IBM Linux for System z Sales and Strategy
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Linux on System z Shelter Insurance © 2011
Actual Software Stack
• z/VM – IBM
– Virtualization
– System management
– RACF, DIRM
• SLES – Novell
• zVPS – Velocity
– Monitor
– Alerts
• Tivoli Omegamon –
IBM
– Enterprise Framework
• Service Desk – CA
– Problem and Incident
– Notification
• FDR on z/OS
– Backup, restore,
recover
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Linux on System z Shelter Insurance © 2011
Knowing that The Penguins
Landed • Annual Dept. Meeting
– accomplishments
• „We did it!‟
– Linux on z
• Another team listed
the accomplishment
– Not our team
– WAS Admins
• They deserved it
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Linux on System z Shelter Insurance © 2011
Penguin Tales
“Ok, that worked but…” • Backup / restore
– DR problems
– Need a VM solution
• Linux gold
– More use of LVM
– Do not include WAS
• WebSphere
– Horizontal scaling
– Shared binaries
• XIP
• LPARs
– Need development
• Migration Processes
– VM
– Linux
– WebSphere
– Application
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Linux on System z Shelter Insurance © 2011
What we have learned (so far)
• Nothing is as easy as it sounds
• There is no substitute for smart, hard work
• Experience is all about knowing what shortcuts to avoid
• Don‟t underestimate cultural challenges
• Do you homework – never stop learning
• Start with the infrastructure
• People - Processes - Tools
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Linux on System z Shelter Insurance © 2011
The Penguins Have Landed
Why Penguins (Linux)
Nesting the Penguins
Feeding the Penguins
Protecting the Penguins
Working the Penguins
Hatching new Penguins
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Linux on System z Shelter Insurance © 2011
Complex
Counter-Cultural
Opportunity to Learn
Journey – Not a Destination
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“Whenever you find yourself on the
side of the majority, it is time to
pause and reflect.”
Mark Twain