arcgis for server reference implementations€¦ · an arcgis server’s architecture tour . basic...

ArcGIS for Server Reference Implementations

An ArcGIS Server’s architecture tour

Basic Single Machine Site

GIS Server

http:6080

Manager

Server Directories &

Configuration Store

ArcGIS Site

Client

Data (Files)

• Uses: • Development • Intranets

• Advantages • Easy to setup • Fast performance (keep file resources local)

• To keep in mind • No HA

• Security • Admin end-points exposed to clients (Consider restricting IPs)

• Only Esri’s token based authentication

• No http standard ports used

http://ismael.esri.com:6080/arcgis/admin

http://ismael.esri.com:6080/arcgis/admin

Firewall

Forces all access to your GIS Server Through your Proxy

Firewall

DMZ

Single Machine Site with Proxy

GIS Server Manager


Configuration Store

ArcGIS Site

Client

Data (Files)

Data (DBs)

Proxy http:80

Hides your GIS Server machine, and ports

Block your admin end-points

http://acme.com/context/admin

http://acme.com/context/manager

Administration through 6080

http:6080

• Uses: • Intranets / Internet access

• Advantages • Fast performance (keep file resources local) • Enhanced security

• To keep in mind • No HA • Token authentication only GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Data (Files)

Data (DBs)

Proxy http:80

Firewall

Single Machine Site with Proxy

The ArcGIS Web Adaptor

• An Esri proxy implementation for ArcGIS Server

• Runs on your web server • IIS, Java

• Helps you leverage your third party web server security features

Including Web Tier Authentication

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Data (Files)

Data (DBs)

Web Adaptor http:80

Firewall

• Automatically handles GIS Servers in your site*

* Will see later

Web Server

ArcGIS site with Multiple Web Adaptors

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Data (Files)

Data (DBs)

Firewall

Web Adaptor (Private)

http:80

Client

Web Adaptor configured to block anonymous access

(Users can see private and public services)

Client

Web Adaptor (Public)

http:80

Web Adaptor configured to allow anonymous access

(Users can see public services)

Multi-Machine Sites

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

• Two or more machines sharing single config-store & server directories • Pool of machines using ports 4000-4005+ Internall use only. Clients cannot use

• Data strategies: As usual. Keep local if you can Note: Map caches can’t be local If you share, share for all

4000…

• All GIS Servers kept in sync for you update one GIS Server… all other nodes in the pool updated*

* Unless using ‘Clusters’. We will see later

Basic Concepts

Multi-Machine Site With Load Balancer

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

• Typical configuration to support applications

• Load balancer fronts a pool of GIS Servers

4000…

• For High Capacity or HA with simplified administration

Client

Load Balancer

• Typically Load Balancer acts as or is complemented by a proxy + firewall

Firewall

• If not using Web Adaptor, can’t use Web Tier authentication

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

• A variation of the previous configuration

• Supports Web Tier Authentication

4000…

Client

Web Adaptor

Firewall

Multi-Machine Site With Web Adaptor

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

• A HA variation of the previous configuration

• Requires third party load balancer or web farm clustering

4000…

Client

Web Adaptor

Firewall

Web Adaptor

• As in all HA configurations: Must consider HA implications for Server Directories, Config-Store and Data tier

Multi-Machine Site With Redundant Web Adaptors

• ArcGIS Server components

• Single Machine Sites • Basic • With Proxy • With Web Adaptor

• Multi Machine Sites

• Concepts • Basic (without a load balancer) • With Load Balancer • With Web Adaptor • With redundant Web Adaptors

• Load Balanced Sites

• Concepts • Active-Passive Fail Over • Active-Active

Load balanced ArcGIS Site Concepts

Client

GIS Server

ArcGIS Site

aka Siloed Architecture

Load-Balancer/Proxy or Web Adaptor

GIS Server GIS Server Server Directories

& Configuration Store

GIS Server

ArcGIS Site Load-Balancer/Proxy or Web Adaptor



Proxy/Load Balancer

Use Cases: • High Availability • High Capacity

Keep in mind:

• Sites are not aware of each other • You must keep Data, Security and

Services in sync • Must leverage third party load

balancers

Load Balanced ArcGIS Sites Active-Active

Client

GIS Server




GIS Server




Proxy/Load Balancer

Active

Use Cases: • High Availability • High Capacity

Notes:

• Supports distribution of sites across separate data centers

• Must keep Sites in sync!

Active

Load Balanced ArcGIS Sites Active-Passive Fail-Over

Client

GIS Server




GIS Server




Proxy/Load Balancer

Active

Use Cases: • High Availability with Fail-Over Licensing

Notes:

• No additional licensing cost for Fail-Over sites • Supports distribution of sites across separate

data centers • Must keep Sites in sync!

Stand-by

Questions

Concept: ‘Clusters’

GIS Server

http:6080


Configuration Store

Cluster A

GIS Server

http:6080

4000… GIS Server 4000 +1

Cluster B http:6080

Site

In ArcGIS Server, a ‘cluster’ is a logical group of machines within a site that run the same services

Concept: ‘Clusters’

GIS Server

http:6080


Configuration Store

Cluster A

GIS Server

http:6080

4000… GIS Server 4000 +1

Cluster B http:6080

Site

4 4 2 Total instances (assuming 2 per GIS server)

GIS Server

http:6080


Configuration Store

Cluster A

GIS Server

http:6080

4000… GIS Server 4000 +1

Cluster B http:6080

Site


Moving machines from cluster to cluster

Moving services from cluster to cluster

GIS Server

http:6080


Configuration Store

Cluster A

GIS Server

http:6080

4000… GIS Server 4000 +1

Cluster B http:6080

Site


Questions





• Other Reference Implementations

• Active-Passive Fail Over • Load Balanced Sites (aka Siloed architecture)

arcgis for server reference implementations€¦ · an arcgis server’s architecture tour . basic...

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