SUSE Linux Enterprise High Availability Roadmap

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1 SUSE Linux Enterprise High Availability Roadmap Kai Dupke Lars Marowsky-Brée Senior Product Manager SUSE Linux Enterprise Server Distinguished Engineer Architect Storage / HA Distribution: pdf any Date: Not a public document

2 Topics Overview SUSE High Availability Geo Cluster Roadmap 2

3 Challenge Murphy's Law is universal Faults will occur Service outage and loss of data Hardware crash, flood, fire, power outage, earthquake? You might afford a five second blip, but can you afford a longer outage? How much does downtime cost? Can you afford low available systems? 3

4 HA or no-ha?

5 Quis custodit custodes? Re-Boot instead of fail-over Re-Deployment instead of fail-over 5 (virt.) hardware needs to be available Monitor needs to be always available Farmed services Client needs to handle fail-over ('F5', SMTP) 3rd party application must support scale-out Backend needs to be available

6 SUSE Linux Enterprise High Availability Extension

7 Overview SUSE Linux Enterprise High Availability Extension Most modern and complete open source solution for high available Linux clusters A suite of robust open source technologies that is 7 Easy to use Integrated Virtualization agnostic Used with SUSE Linux Enterprise Server, it helps to Maintain business continuity Protect data integrity Reduce unplanned downtime for mission-critical workloads

8 Features SUSE Linux Enterprise High Availability Extension 8 Service Failover Network Load-Balancer Cluster File System Data Replication Clustered Samba Node Recovery Virtualization Agnostic Unlimited Geo Clustering Support for x86, x86_64, POWER, System z

9 Targets SUSE Linux Enterprise High Availability Extension Quickly and easily to install, configure and manage Continuous access to mission-critical systems and data Transparent to Virtualization Meet Service Level Agreements Increase service availability 9

10 Key Use Cases SUSE Linux Enterprise High Availability Extension Focus on mission-critical services Active/active services Active/passive service fail-over with transparent fail-over All Topologies 10 Fine granular monitoring and HA on top of virtualization Network Load-Balancing Traditional databases, SAP setups, regular services High availability across guests OCFS2, Databases, Samba File Servers Local, Metro, and Geographical area clusters

11 Sample Use Cases - SAP SUSE Linux Enterprise High Availability Extension Simple Stack DRBD Data Sync 11 Enqueue Replication HA in Virtual Environments

12 Reference oxya SUSE Linux Enterprise High Availability Extension SAP Systems Integrator & Managed Services Part of Hitachi Data Systems Unix to SUSE Linux & SAP migrations youtube.com/watch? v=pckxcckgmq4 SUSE Linux Enterprise [is] giving our customers an enterprise-class option for high availability. High-availability managed services enable our customers to adapt and grow their businesses faster and at lower cost. We are very happy with the technical support that SUSE provides...., we recommend a clustered solution based on SUSE Linux Enterprise ServerTBD. François Détrez CTO & co-founder oxya 14

13 Summary SUSE Linux Enterprise High Availability Extension Fighting Murphy's Law Service failover at any distance from local to geo Up to % availability Rolling updates for less planned downtime Easy setup, administration, management Virtualization agnostic Leading open source High Availability On par with proprietary products When will you start? 15

14 Setup & Management

15 Easy Setup Bootstrap & Wizards SUSE Linux Enterprise High Availability Extension Bootstrapping a cluster is really easy - node1 # sleha-init -i bond0 -t ocfs2 -p /dev/sdb - node[2...n] # sleha-join -c Options are optional Connect to the web console for cluster management & wizards

16 Administration

17 History Explorer 19

18 Cluster Simulator SUSE Linux Enterprise High Availability Extension 20

19 Command Line SUSE Linux Enterprise High Availability Extension 21

20 Geo Cluster

21 Geo Cluster Overview SUSE Linux Enterprise High Availability Extension 23 Cluster fail-over between different locations Provide disaster resilience in case of site failure Each site is a self-contained, autonomous cluster Support manual and automatic switch-/fail-over Extends Metro Cluster capabilities No distance limit between data centers No unified storage / network needed Storage replicated as active / passive Leverage SUSE included data replication (DRBD) Integrate third-party solutions via scripts

22 Geo Cluster From Local to Geo SUSE Linux Enterprise High Availability Extension 24 Local cluster Negligible network latency Typically synchronous concurrent storage access Metro area (stretched) cluster Network latency <15ms (~20mls) Unified / redundant network between sites Usually some form of replication at the storage level Geo clustering High network latency, limited bandwidth Asynchronous storage replication

23 Geo Cluster Setup SUSE Linux Enterprise High Availability Extension Site C (Arbitrator) boothd boothd Node 1 boothd Node 2 Site A 26 Node 7 Node 8 Site B

24 Roadmap

25 Roadmap SUSE Linux Enterprise High Availability Extension 2012 SLE 11 SP SP3 SLE HA 12 Off-line History-Explorer SCSI Reservation GEO - Standard stack - multi-tenancy - IP relocation 2016 SP4 GA SLE SLE HA 11 SP4 More wizards DB2, Oracle Selected features from SLE HA 12 Better scalability SP1 SLE HA 12 SP1 More wizards MariaDB GEO - enhanced security - improved management HAWK redesign preview

26 Recent Improvements 12 SUSE Linux Enterprise High Availability Extension History Explorer Cluster health evaluation crmsh improvements New config options Node Recovery 29 SCSI handling Updated rear Load Balancer Administration Off-line support Fence Agents update HAproxy added Cluster File System OCFS2 performance improvements GFS2 added Geo Clustering Multi tenancy arbitrator IP relocation (DNS based)

27 Recent Improvements 11 SP4 SUSE Linux Enterprise High Availability Extension 30 New wizards Oracle simple stack DB2 simple stack DB2 HADR Shared disk web service Administration Resource groups Multiple FS exports Scalability secondary cluster nodes with pacemaker_remote Unified Platform SLE HA 12 ReaR added to 11 SP4 Important features from SLE HA 12 Important features from SLE HA GEO 12

28 Selected Features

29 External Remote Monitoring 32 Remote monitoring of resources no HA components needed re-use of Nagios/icinga plugins Improved handling of virtual guests monitor virtual services from the hypervisor improve protection of VMs as cluster workload guests remain unaltered monitoring is external Extends pacemaker to include the concept of container resources

30 Scale-out pacemake_remote Total node count beyond 32 nodes Main nodes controls secondary nodes Cluster Domain 33

31 Scale-out via remote nodes Core cluster is a small full traditional cluster Core drives arbitrary number of remote nodes Remote management and monitoring: Remote agent (pacemaker-remote) needed Uses resource agents & system init scripts More feature-rich than external monitoring Remote nodes can host (almost) all resources 34 Remote nodes can be virtual or physical Exceptions: DLM, clvm2, OCFS2, GFS2

32 Scale easier Multiple FS Exports 35 Simplify NFS configuration

33 Scale easier Resource Tags 36 Bundling groups of resources Handle connected resources with one command

34 Customer Friendly Wizards 37 Guided setup GUI way Makes standard scenarios easier Less to config faster to deploy

35 Outlook

36 Upcoming Improvements 12 SP1 SUSE Linux Enterprise High Availability Extension All from SLE HA 11 SP4 plus mariadb Performance and scalability improvements SLE HA GEO 39 More wizards Authentication of clients and peers Support for multiple simultaneous clients Preview of re-designed HAWK web GUI Forward looking statement, might change without notice.

37 HAWK Re-Design Preview SUSE Linux Enterprise High Availability Extension 40 Forward looking statement, might change without notice.

38 Areas to Look Into SUSE Linux Enterprise High Availability Extension Failure will occur Virtualization and Cloud Is re-{booting,deploying} a guest sufficient? Install HA components in the guests? Service Monitoring In depth monitoring, 'system as one' or remote monitoring? Local, Metro, Geo What outage is tolerable 0s, 1s, 1min, 1hour, 1day? What is the next cluster scenario? Forward looking statement, might change without notice.

39 Architecture

40 Cluster Example SUSE Linux Enterprise High Availability Extension Client s Network Links Xen VM 1 LAMP Apache IP ext3 Xen VM 2 clvm2+ocfs2 DLM Pacemaker Storage Corosync + openais Kernel 43 Kernel Kernel

41 Linux High Availability Stack SUSE Linux Enterprise High Availability Extension 44 The stack includes: resource-agents manage and monitor availability of services stonith IO fencing support (also Xen and VMware VMs) corosync and OpenAIS cluster infrastructure Pacemaker cluster resource manager CRM GUI graphical interface for cluster resource and dependencies editing hawk Web console for cluster monitoring and administration CLI improved command line to interact with the CIB: editing, prepare multiple changes - commit once, syntax validation, etc.

42 Detailed Architecture SUSE Linux Enterprise High Availability Extension 45

43 46

44 Learn more Kai Dupke Senior Product Manager SUSE Linux Enterprise Server 47 Lars Marowsky-Brée Distinguished Engineer Architect Storage / HA

45

46 Unpublished Work of SUSE. All Rights Reserved. This work is an unpublished work and contains confidential, proprietary and trade secret information of SUSE. Access to this work is restricted to SUSE employees who have a need to know to perform tasks within the scope of their assignments. No part of this work may be practiced, performed, copied, distributed, revised, modified, translated, abridged, condensed, expanded, collected, or adapted without the prior written consent of SUSE. Any use or exploitation of this work without authorization could subject the perpetrator to criminal and civil liability. General Disclaimer This document is not to be construed as a promise by any participating company to develop, deliver, or market a product. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. SUSE makes no representations or warranties with respect to the contents of this document, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. The development, release, and timing of features or functionality described for SUSE products remains at the sole discretion of SUSE. Further, SUSE reserves the right to revise this document and to make changes to its content, at any time, without obligation to notify any person or entity of such revisions or changes. All SUSE marks referenced in this presentation are trademarks or registered trademarks of Novell, Inc. in the United States and other countries. All third-party trademarks are the property of their respective owners.

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