• One of four Canadian Universities ranked among the top 100 in the world (Shanghai Jiaotong University Academic Ranking of World Universities, August 2016)

• Founded in 1887 in Toronto• Moved to Hamilton in 1930• Over 32,000 Full-time Staff, Faculty & Students

Systems Renewal - Mosaic Administrative SystemsIn 2012, McMaster began a multi year ERP project to replace its Legacy SystemsOracle PeopleSoft Financials, Human Resources, Campus Solutions, Data Warehouse and related modules was selected for Implementation

McMaster and Red Hat

▪Academic “Departmental” license for RHEL (since converted to full site license)

▪Instance based Gluster, JBoss Fuse, EUS (and possibly Ceph in our future…)

Mosaic and Red Hat Gluster Storage

▪Deployment of most PeopleSoft components on RHEL with Gluster for shared/replicated storage where required

▪Original middleware components RHEL and JBoss Fuse with Gluster for shared/replicated message persistence storage

Physical Technical Infrastructure• Mosaic should continue to function even with the loss of one room (at reduced capacity)

• Message Oriented Middleware (JBoss Fuse with ActiveMQ)• PeopleSoft file storage (report repository and user attachments)

User access/presentation layer• Citrix Netscaler active/passive VPX instances

Stack components (web/app)• Largely independent (with help of load balancer/ADC)

Databases• Data guard for replication to other site• Clusterware/RAC for fault tolerance and load distribution

User application file storage (attachments&reports) MOM message persistence

How Close were we?

What about a [supportable] stretch replica cluster?• All nodes must be on the same logical network – no storage traffic routing• Latency must be low• Maximum two storage sites ( not including a possible quorum device at a third neutral site ) **• Red Hat Architecture Review

**Speaking of quorum devices…

▪Current Installation vulnerable to spit-brain❑ </knock_wood>this hasn’t been an issue…

▪New version supports a third node in the trusted pool that doesn’t contribute a storage brick

❑ Need to make sure quorum ratio is set

▪Upstream Gluster supports an arbiter node❑ File metadata stored with the arbiter, but not file contents❑ Roadmap for support in RHGS product?

Replicated file storage and MOM message persistence Sandbox Environment• Three RHEL7.2 VMs• gl10.nie.vm (arbiter) ; gl11.nie.vm, gl12.nie.vm storage bricks and ActiveMQ brokers (and test clients)