Red Hat Storage Day Seattle: Stretching A Gluster Cluster for Resilient Message Persistence and File Storage at McMaster University
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McMaster University Red Hat Gluster Presentation
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Red Hat Storage Day Seattle: Stretching A Gluster Cluster for Resilient Message Persistence and File Storage at McMaster University
- 1. • 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
- 2. Systems Renewal - Mosaic Administrative Systems In 2012, McMaster began a multi year ERP project to replace its Legacy Systems Oracle PeopleSoft Financials, Human Resources, Campus Solutions, Data Warehouse and related modules was selected for Implementation
- 3. 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…)
- 4. 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
- 5. 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)
- 6. 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?
- 7. 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
- 8. **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?
- 9. 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)