CephDay Argentina 2019
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1) The document discusses pushing Ceph adoption in the Latin American market, focusing on key features of Ceph including its open source philosophy, scalability, and self-managing capabilities. 2) It outlines some important decisions that must be made when implementing Ceph, such as rack placement and network configuration to avoid single points of failure and optimize performance and recovery. 3) The author argues that Ceph provides advantages over other storage solutions by being software-based, which reduces costs and reliance on support compared to hardware-centric alternatives.
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CephDay Argentina 2019
- 1. Pushing Ceph in LATAM market October 16, 2019 by Álvaro Soto // @alsotoes CEPHDAYARGENTINA2019
- 2. 2 .whoami • Based in Mexico City • Cepher since Firefly (2015) • Stacker since Havana (2013) • Public and private sector – Financial – Government – Health-care – E-commerce – ***
- 3. 3 Disclaimer I’m not a storage guy I’m not a sales guy I’m an engineer
- 4. 4 This talk is about… Lots and lots of comparison. My personal experience.
- 5. 5 Where are the Ceph users? https://ceph.com/wp-content/uploads/2018/07/Ceph-User-Survey-2018-Slides.pdf
- 6. 6 Ceph main features Philosophy • Open Source • Community focused • No single point of failure Design • Scalable • Software base • Self managing / healing
- 7. 7 Ceph main features Philosophy • Open Source • Community focused • No single point of failure Design • Scalable • Software base • Self managing / healing
- 9. 9 From who do I need help? (Ceph) • Rack & stack • Sysadmin • Networking • Network security • Monitoring
- 10. 10 Some decisions to make (Ceph) • Should the replicated node be on the same rack or multiple racks to avoid SPOF ? • Should the OSD traffic stay within the rack or span across rack in a dedicated or shared network ? • How many nodes failure can be tolerated ? • If the nodes are separated out across multiple racks network traffic increases and the impact of latency and the number of network switch hops should be considered. • Ceph will automatically recover by re-replicating data from the failed nodes using secondary copies present on other nodes in cluster . A node failure thus have several effects. – Total cluster capacity is reduced by some fractions. – Total cluster throughput is reduced by some fractions. – The cluster enters a write heavy recovery processes.
- 11. 11 Some decisions to make (Ceph) • Should the replicated node be on the same rack or multiple racks to avoid SPOF ? • Should the OSD traffic stay within the rack or span across rack in a dedicated or shared network ? • How many nodes failure can be tolerated ? • If the nodes are separated out across multiple racks network traffic increases and the impact of latency and the number of network switch hops should be considered. • Ceph will automatically recover by re-replicating data from the failed nodes using secondary copies present on other nodes in cluster . A node failure thus have several effects. – Total cluster capacity is reduced by some fractions. – Total cluster throughput is reduced by some fractions. – The cluster enters a write heavy recovery processes.
- 12. 12 Any other storage solution • Defined use cases. • You will always need support. • Storage admins. • Certifications. • Short communities. • Mostly no free support.
- 15. 15 Software based Tuning!!! Tuning!!! Tuning!!! Tuning!!! Tuning!!! Tuning!!!
- 16. 16 Software based • Business Requirement – Budget ? – Do you need Ceph cluster for day to day operation or SPECIAL • Technical Requirement – What applications will be running on your ceph cluster ? – What type of data will be stored on your ceph cluster ? – Should the ceph cluster be optimized for capacity and performance ? – What should be usable storage capacity ? – What is expected growth rate ? – How many IOPS should the cluster support ? – How much throughput should the cluster support – How much data replication ( reliability level ) you need ?
- 17. 17 Questions?