SUSE Linux Enterprise Server 12 first look. Piotr Szewczuk

Transcription

1 SUSE Linux Enterprise Server 12 first look. Piotr Szewczuk Senior consultant

2 SUSE Linux Enterprise Server 12 The advanced foundation for mission critical workloads Increase uptime 2 Improve operational efficiency Accelerate innovation

3 Towards Zero Downtime Best Managed SUSE Linux Enterprise 12 Most Interoperable OS Made for Cloud 3

4 SUSE Linux Enterprise 12 Made for Cloud In Your Data Center In the Clouds Perfect Guest Available in Public Clouds Guest KVM & XEN Containers Host Dual Hypervisor Support 4 Cloud Hosts

5 Made for the Cloud Host Guest In Your Data Center 5 In the Clouds

6 SUSE Linux Enterprise 12 Made for Cloud Hypervisors Built-in Virtualization Host KVM Xen 6 I/O improvements, storage and network device hotplugging Microsoft Windows support Latency improvements, flexible partitioning Better fault handling, improved scalability and performance

7 More choices: broad ecosystem Latest Latest CPU CPU X86, Intel, AMD POWER, System z IHV ISV 7 Yes! certifications Thousands of ISV applications

8 SUSE Linux Enterprise 12 Common Code Base & Architectures SUSE Linux Enterprise platform Server Desktop SDK HA Cloud Binary Code Base Intel 64 IBM POWER IBM System z Common (Source) Code Base 8 Foundation for all SUSE products Fully supported core system Choose the right architecture for your workload

9 SUSE Linux Enterprise 12 introducing Kernel 3.12 The third release based on Linux kernel 3.x, Filesystems: XFS and btrfs: get the best from both worlds Support for XFS for massive storage btrfs as the default file system Virtualization: Linux Containers 9 Support Linux Containers (LXC) Better manageability and integration with hypervisors Docker as Technical Preview

10 SUSE Linux Enterprise 12 Technology Highlights 64-bit hardware is the future Virtualization Xen and KVM support 64-bit host; 64-bit and 32-bit guests UEFI Secure Boot 64-bit kernels only Execution of 32-bit applications fully supported via 32-bit execution environment on top of 64-bit kernel Refine implementation started with SUSE Linux Enterprise 11 SP3 Systemd replaces SysVInit Boot process Grub2 (bootloader), Dracut (initrd building) 10

11 Major Linux (local) Filesystems Feature Data/Metadata Journaling Journal internal/external Offline extend/shrink Online extend/shrink Inode-Allocation-Map Sparse Files Tail Packing Defrag ExtAttr / ACLs Quotas max. Filesystemsize max. Filesize ext 2/3 / / / / table / 16 TiB 2 TiB reiserfs / / / / u.b*-tree / 16 TiB 1 EiB xfs / / / / B+-tree / 8 EiB 8 EiB Default Filesystem for the data 11 ext4 / / / / table / 1 EiB 1 EiB btrfs CoW CoW / / B-tree / Subvol. 16 EiB 16 EiB Default Filesystem for the OS

12 SUSE Linux Enterprise 12 Filesystem recommendations Yes OS Purpose? New Filesystem? Data No xfs Type? reiserfs ext2/3/4 Yes Snapshots? No xfs btrfs Recommended Filesystems 12 Snapshots? Yes No ext3 4 Convert

13 btrfs Functionality Maturity Today Future Copy on Write Inode Cache Snapshots Auto Defrag Subvolumes RAID Metadata Integrity Compression Data Integrity Send / Receive Online metadata scrubbing Hot add / remove 13 Manual Defragmentation Seeding devices Manual Deduplication Multiple Devices Quota Groups Big Metadata

14 Btrfs Concepts: Subvolumes / /home /var/log Subvol (B-Tree) 14 Link Subvol (B-Tree) Independent B-Tree linked to some directory of the root subvolume A part of the file system Appears on file system as a directory Independently mountable Subvols on a Btrfs file system share the same device pool Independently snapshotable (copy B-Tree)

15 Btrfs Concepts: Snapshots / /home Clone B-Tree Subvol (B-Tree) 15 Clone B-Tree A record of the state of a subvolume CoW copy of another subvolume After creation, snapshot shares all raw data and metadata with parent (practically) unlimited in number Read Only, Writable and Nested (= snapshot of a snapshot ) Snapshots on the file system level

16 Btrfs Integration in YaST Partitioner 16

17 SUSE Linux Enterprise Lifecycle & Code Streams 2011 SLE10 SLE SP4 SP2 SLE 12 SP4 SP3 GA SP1 13-year lifecycle SUSE Linux Enterprise 12 For SLES 11 and SLES 12, 10 years general support, +3 years Long Term Support Long Term Service Pack Support for every Service Pack Tentative Dates subject to change 17

18 Lifecycle Model where are we going 10 years lifecycle + 3 years Extended Support year lifecycle (10 years general support, 3 years extended support) Long Term Service Pack Support available for all versions, including GA

19 Best Managed Linux OS

20 SUSE Linux Enterprise 12 Best Managed Local Management Leading system installation technology YaST: the only integrated single system management solution in the Linux world Wicked: overhaul of network management Cope with increasingly complex configurations Benefits Network configuration as a service Smooth adoption & migration 20 CIM: Open and standardized interfaces

21 SUSE Linux Enterprise 12 Installer Reduced installation time and effort Manual Installation Possibility to install directly with updates thanks to early registration Improved Workflow, no second stage Early Network configuration Multiple UI options Automated AutoYaST Customized 21 Write your own modules in Ruby

22 SUSE Linux Enterprise 12 Installer Workflow SUSE Linux Enterprise 11 Installation Setup Install without updates Reboot Network Register Reboot Services Log-in Wait Update Wait SUSE Linux Enterprise 12 Installation Setup Network Wait Reboot 22 Log-in Register Install with updates

23 SUSE Linux Enterprise 12 Network Management Wicked Goal Cope with increasingly complex configurations Data Center and End Users Benefit Network configuration as a service Smooth adoption & migration Technical Attributes Architecture-independent Extensible Small footprint Event based 23

24 SUSE Linux Enterprise 12 Systemd Technical Attributes 24 systemctl reload restart start status stop... <my_service(s)>.service systemctl --lines=20 -l status apache2 systemctl enable disable apache2

25 Machinery The future of Systems Management

26 SUSE Linux Enterprise 12 Systems Management Advanced Systems Management Use Cases Physical to Virtual (P2V) or Physical to Cloud (P2C) migrations and server consolidation OS and/or application modernization Disaster Recovery; (Backup and Restore) Building and maintaining a Golden Image for the datacenter (but desktop/branch office scenarios as well) Cluster/Scale-out scenarios 26

27 SUSE Linux Enterprise 12 Systems Management Advanced Systems Management 27

28 SUSE Linux Enterprise 12 Systems Management Advanced Systems Management 28 Tech Preview in SUSE Linux Enterprise 12 GA

29 Automated Deployment Model forward looking Various Output Formats System Inspection in Advanced Management Module KIWI YaST / AutoYaST Build...Test...Deploy Your Project 29

30 Interoperability

31 Interoperability 31 SCOM integration (Management) SAMBA: File & Print VM Driver pack for hyper-v VMware tools Integration

32 SUSE Linux Enterprise 12 Interoperability - Vision Network Virtualization and Cloud Operating Systems Interop Windows UNIX Linux Standards Compliance 32 IPv6 (USGv6) Accessibility Security (NIST, BSI)

33 SUSE Linux Enterprise 12 Interoperability - IPv6 Leading OS IPv6 compatibility and certification (USGv6) Tested scenarios DHCP6 server and client IPv6 support in NFS Ensure IPv6 capabilities with UEFI network boot Network services System Installation & Patching over IPv6 Benefit Deploy and use in pure IPv6 environment Scale networks beyond IPv4 limitations Answer compliance needs 33

34 SUSE Linux Enterprise 12 Interoperability Samba 4 Better Distributed Filesystem (DFS) capabilities File Server Remote VSS Protocol (FSRVP) Server: integration with btrfs and Snapper Client Server-side copy enhancements (btrfs backend) Protocol enhancements Encryption SMB 3.0 negotiation Benefit Authentication with recent Windows / AD Servers Linux Server behaves as expected (FSRVP) 34

35 SUSE Linux Enterprise 12 Interoperability Samba 4 Write Write Clone Write Server-Side Range Server-Side Copy Copy Server-Side Read Read 35 Copy Read Traditional Copy Btrfs Enhanced Server-Side Copy

36 Towards zero downtime

37 Important workloads: unplanned downtime as often as 2+ per Year! 37

38 Downtime is more than loss of revenue 38 Source: Forrester/Disaster Recovery Journal November 2013 Global Disaster Recovery Preparedness Survey

39 Towards Zero Downtime RAS High Availability System Rollback Live Patching Minimize downtime planned and unplanned 39

40 RAS Prevent Hardware Downtime

41 RAS: SUSE leading on Linux Reliability, Availability, Serviceability Interaction of hardware and operating system traditional UNIX capability, now in Linux SUSE key RAS capabilities on Linux for x86, Power as well as System Z, includes features for CPU error handling Hot-Add memory Memory error handling Integrated open source RAID (Redundant array of independent disks) 41

42 SUSE Linux Enterprise 12 RAS Benefits Choice of HW vendor System and applications survive hardware failure Integration into systems management frameworks Engineering excellence by early adoption of Kernel 3.x Future Migrate processes to more reliable memory/cpus 42

43 System Rollback Reduce Operational Downtime

44 Towards Zero Downtime System Rollback Goal: Go back to well-known system state Peace of mind for: Patch installation System admin tasks Components ZYpp Btrfs Default filesystem Snapper Grub2 boot loader integration 44

45 System rollback: improve resiliency Rollback to a good state with one click for faster recovery from planned or unplanned downtime with support for patch, service pack and kernel upgrade rollback 45

46 Snapper Btrfs integration Basic integration into Installer Btrfs as root fs Recommendation for subvolume layout Partitioner Create Btrfs Create subvolumes Tools Snapper manage snapshots Automatically create snapshots Display differences between snapshots Roll-back User Interfaces In development (GSoC) 46 CLI DBUS Graphical (YaST) GUI integration

47 Introducing Snapper CLI example Snapper headers: 47 Type : [ Pre Post Single ] # : Nr of snapshot Pre # : if type is Post the matching Pre nr. Date : timestamp Cleanup : cleanup algorithm for this snapshot Description : A fitting description of the snapshot (free text) Userdata : key=value pairs to record all sorts of useful information about the snapshot in an easily parsable format

48 Snapper Command Line # Description 48 Tools 1 List the currently available snapshots snapper list... 2 Show, which files differ in the snapshot pair created by yast users snapper status... 3 Show the difference only in /etc/shadow in the snapshot pair created by yast users snapper diff... 4 Undo a change remove unnecessary files in the user's home directory, e.g..xim.template snapper undochange... 5 Create your own snapshot and modify its description snapper create -d <description> snapper modify <num> 6 Add a Key-Value pair to an existing snapshot snapper modify --userdata <num> 7 Create your own snapshot pair snapper create --type pre... snapper list snapper create --type post --pre-number <n1>... 8 Change description and user data of some more of your snapshots snapper modify <num> 9 Rollback the full system to a former state snapper rollback <num> current

49 Towards Zero Downtime System Rollback - Future SUSE Linux Enterprise 12: Extended system integration Support for Service Pack rollback Support for Kernel Upgrade Full system rollback 49

50 High Availability Increase Service Availability

51 Towards Zero Downtime High Availability Status 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 Secure the business! 51

52 Towards Zero Downtime High Availability Benefits Quickly and easily install, configure and manage clustered Linux servers Increase service availability for mission-critical systems and data Transparent to Virtualization nodes can be virtual or physical or mixed! Integrated with SUSE Linux Enterprise Server Meet Service Level Agreements 52

53 SUSE Linux Enterprise Live Patching Manage Without Downtime

54 SUSE Linux Enterprise Live Patching Technology kgraft What? Kernel Live Patching Designed and developed by SUSE Labs Ease of use: Builds on well known update processes Status? Currently integrated Upstream (=Kernel community) Competitive Advantage? Works with zero execution interruption As opposed to competition who stop the whole system (miliseconds to seconds range) when patching 54

55 SUSE Linux Enterprise Live Patching Kernel Live Patching Use Cases Mission Critical systems Improve general availability Run until the next maintenance window Help with deployment challenges No need to update all systems at one shot, but be able to run until a specific state is reached See also: Caveat: Not all issues can be fixed using kgraft ; in special cases a reboot might be necessary 55

56 SUSE Linux Enterprise Live Patching Service Offering Service on top of SUSE Linux Enterprise Server 12¹ Starts with x86-64 architecture (other architectures may follow later) Business conditions similar to SUSE Linux Enterprise High Availability Customer needs Priority Support and PSE / DSE Principle: avoid different code streams per customer The customer will have to align their roll out strategy / timeline to our delivery and start-points of kgraft streams ¹ The offering will be limited to SUSE Linux Enterprise 12 only, i.e. not be available for SUSE Linux Enterprise 11 56

57 Live kernel patching Designed and developed by SUSE Labs Use Cases when bringing down the kernel is no option: In Memory Databases like SAP HANA Infrastructure systems always in use Simulations uninterupted for months Mission Critical workloads not downtime SUSE offers the only Linux solution that offers zero execution interruption 57

58 Questions? Thank you. 58

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