arcgis for server deployment scenarios€¦ · • intranets / public access • advantages •...

ArcGIS for Server Deployment Scenarios

An ArcGIS Server’s architecture tour

Ismael Chivite Product Manager at Esri

• GIS Server Concepts

• Single Machine Configurations • Basic • Basic with Proxy • With Web Adaptor • Fail-Over • Load Balanced or Siloed

• Multi Machine Configurations

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

GIS Server

ArcGIS Primary Site Administrator

Server Directories &

Configuration Store

Core GIS Server Concepts

ArcGIS Server Account

ArcGIS Server processes run under this user

Two folders that store key information needed for your server to run. Make sure the ArcGIS Server user has

Read/Write access and that folders can be accessed from all GIS Servers

Manager

Web browser based management console. You do not

need a separate web server to run this

http:6080

ArcGIS Server is a pure GIS Web Services Server. All communication for using and administering occurs via http

This is the user that can administer ArcGIS Server. Not a Windows/Linux user

(unless you want to)

ArcGIS Site

GIS Servers live within an ArcGIS Site: a logical grouping of servers that simplifies administration

Basic Single Machine Configuration

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Data (Files)

Keep your files local Best performance Keep them local

Best performance Data (DBs)

Typically dedicated machine

Basic Single Machine Configuration

GIS Server

http:6080

Manager


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

Single Machine Configuration with Proxy

GIS Server

http:6080

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

Firewall

Forces all access to your GIS Server Through your Proxy

Administration through 6080

Single Machine Configuration with Proxy

• Uses: • Intranets / Public access

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

• To keep in mind • No HA

• Token authentication only unless a Web Adaptor is used GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Data (Files)

Data (DBs)

Proxy http:80

Firewall

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

Single Machine Configuration with Web Adaptor\s

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)

Single Machine Configuration (Fail-over)

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Active

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Stand-by

Client

Proxy\Load Balancer

All requests forwarded to the active site

Standby site not used until failure in active node is detected

Each GIS Server has its own Config-store and Server directories


GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Proxy\Load Balancer

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Active Stand-by

Data (Files) Data (Files)

Database Database Replication

With Replicated Data Tier


• HA variation of a single machine deployment

• Relies on an external load balancer

• Must pay attention to data tier HA strategy

• License for standby server provided at no additional cost

• Must keep stand-by Server in sync

• Duplicate shared token key across sites if using tokens

Load balanced Single Machine Configuration (Active-Active)

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Proxy\Load Balancer

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Active Active

aka Siloed Architecture


GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Client

Proxy\Load Balancer

GIS Server

http:6080

Manager


Configuration Store

ArcGIS Site

Active Active

With Data Tier

Database and/or Network Share

Data (Files) Data (Files)

• High Capacity variation of a single machine deployment

• Relies on an external load balancer

• Must keep all GIS Servers in sync! • Manually • Scripting • Virtualization

• Duplicate shared token key across sites if using tokens


• If performance is key: keep file-based data and caches locally

• Ideal for serving map tiles (High capacity/HA)

Multi-Machine Configurations

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

Basic Multi-Machine Configuration (without a load balancer)

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

• Adds capacity to a single machine deployment

4000…

• Without a load balancer, single point of failure for applications

• Only practical for batch processing (Map caching)

Basic Multi-Machine Configuration (Map Caching Workflow Example)

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

FileGDB One Way replica

Changes Multi-user Geodatabase

Desktop

Desktop Edit

FileGDB FileGDB

Multi-Machine Configuration 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 Note: How load balancing works?

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

Multi-Machine Configuration With Web Adaptor

GIS Server

http:6080


Configuration Store

ArcGIS Site

GIS Server

http:6080

• A variation of the previous configuration

• Supports Web Tier Authentication

4000…

• Does not require overhead of managing a a third party load balancer

Client

Web Adaptor

Firewall

• Use redundant Web Adaptors for HA (see next)

Multi-Machine Configuration With Redundant Web Adaptors

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

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

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