REDEFINING THE ENTERPRISE OS RED HAT ENTERPRISE LINUX 7 › rfreire › cce-rhel7-rio.pdf · RED...

Rodrigo Freire / Ron Pacheco1

REDEFINING THE ENTERPRISE OSRED HAT ENTERPRISE LINUX 7

Rodrigo FreireSr. Technical Account Manager29/Ago/2014

Rodrigo Freire / Ron Pacheco2>

Roadmap At A Glance

CY2010 CY2011 CY2012 CY2013 CY2014

Production 3Production 2Production 1

*All dates are approximate and subject to change

RHEL 6

RHEL 5

.4

.10

RHEL 7

.11

.3.2.1.0

.0

.5

.9.8.7.6.5

.6

Application Isolationvia Containers


CONTAINERS ENABLE CONTINUOUS DELIVERY

LIBS

APP HOST OS

SERVER

HOST OS

SERVER

CONTAINER

OPERATIONS FOCUS● HARDWARE● OPERATING SYSTEM● NETWORKING● MONITORING

DEVELOPMENT FOCUS● CODE● APPLICATIONS● LIBRARIES AND OTHER

DEPENDENCIES● DATA STORE

CONTAINER

LIBS

APP


RHEL 7 Containers Architecture with Docker CLI

RHEL Kernel

Hardware (Intel, AMD)

Containers ContainersContainers

Unit File

Docker Image

DOCKER CLI

SYSTEMD

Cgroups Namespaces SELinux

Drivers


BENEFITS OF LINUX CONTAINERS


SPEED DEPLOYMENT WITH SERVER PROFILES

IN-PLACE UPGRADES FROM 6.X TO 7

SAFELY ROLL-BACK DURING INSTALL

EASILY CREATE CUSTOM INSTALL IMAGES

PRIORITIZE CRITICAL SERVICES AT START-UP

DRAMATICALLY SPEED START-UP TIMES

MORE EFFICIENT INSTALLATIONAND DEPLOYMENT

Create, Install,Deploy & Manage


Custom Install Images using Live Media Creator

Easier installation, deployment, and custom image creation/management across large-scale enterprises

● Spin custom installable images with the help of Live Media Creator

Content Sources(Repositories)

Custom Image


Image Deployment with Anaconda Kickstart

● Filesystem Image Deployment● kickstart liveimg command

● Same family as url, harddrive, &c● Deployment of pre-created filesystem images● Supports squashfs compressed images

● Manual deployment of partitioned disk images for virt usage

● live images must contain the utilities needed by anaconda to perform the OS installation


CENTRALIZED MANAGEMENT AND FASTER BOOT UP

● Gain centralized management of processes, services, security, and other resources

● Prioritize critical services and deliver production support while less critical resources are still initializing

● Dramatically decrease start up times

● Compatible with existing scripts (SysV and LSB init scripts)

“Systemd is my favorite feature so far. We deal with lots of init scripts currently; I’m already seeing great improvements by switching most of them to systemd.”1

IT Architect, Medium Enterprise Media & Entertainment Company

1 Source: Research by TechValidate: www.techvalidate.com/product-research/red-hat-enterprise-linux TVID: 6D2-C98-90F


MANAGEABILITY WITH OPEN LMI

● Open standards-based management framework for low-level system configuration

● Unified management tools and system-wide resource management allow users to streamline administration

MANAGED SYSTEMS

OpenLMI Object Broker

MANAGEMENT SYSTEMPYTHON SCRIPTS

CUSTOMAPPS JBOSS SHELL

SCRIPTS

LMISHELL PYTHON C/C++ JAVA CLI

OpenLMI Client Interface Libraries

NETWORK STORAGE SERVICESSOFTWARE OTHERAGENTS

USERS SECURITY SYSTEMCONFIG

MONITOR

http://www.techvalidate.com/product-research/red-hat-enterprise-linux

File System Choice


CHOICE OF FILE SYSTEMSRED HAT ENTERPRISE LINUX 7 RC

● Scale file systems to 500TB with new default filesystem XFS

● Scale to 50TB with ext4

● Btrfs also available2

● Parallel NFS v4 provides improved performance and throughput

TypeSupported

LimitRoot Boot Comments

Single-node

XFS 500TB Yes Yes System default

ext4 50TB Yes Yes Driver allow access to older versions (ext2, ext3).

btrfs2 50TB Yes Yes

Network/Multi-node

GFS2 2-16 nodes Yes No Shared-storage file system

“The default XFS filesystem is just great!!”1

IT Specialist,US Federal Government

1 Source: Research by TechValidate: www.techvalidate.com/product-research/red-hat-enterprise-linux TVID: 6D2-C98-90F2 Available as a Technology Preview

Storage



RHEL 7 Storage Enhancements

● SSD’s● Hierarchical/Tiered storage (Device mapper cache)● MultiQ block layer design● Interconnect support – upstream dependent (NVMe,

SOP, SAS-3) ● Linux-IO SCSI Target (LIO)

● Asynchronous SCSI events

● Software RAID enhancements


Storage Management APIs and CLI

● libstoragemgt manages SAN and NAS

● liblvm is the API equivalent of LVM user commands

● Blivet is a new high level storage and file system library that will be used by anaconda and OpenLMI

● Storage system manager provides an easy to use command line interface

Unification of storage management code

Networking


Team Driver

● Mechanism to aggregate multiple network devices into a single logical interface at the data link layer (L2.)

● Alternative to the existing Linux Bonding driver that provides many advantages over traditional bonding.

● Mostly implemented in user space with only the data fast-path implemented in the kernel.

● Supports IEEE 802.3ad (IEEE 802.1ax) LACP + many proprietary standards.

● Performance is equal or better than Linux Bonding driver and provides nearly identical functionality including some added improvements.


● Network Namespaces

● Lightweight container-based virtualization allowing virtual network stacks to be associated with a process group. Essentially, another copy of the network stack.

● Network Priority Control Group (cgroup)

● Provides an interface to allow an administrator to dynamically set the priority of network traffic generated by various applications.

● Firewalld

● New dynamic firewall service providing greater flexibility over iptables by eliminating service disruptions during rule updates, abstraction, and support for different network trust zones.

● TCP

● Numerous performance and latency improvements including Fast Open, Tail Loss Probe (TLP) Algorithm, Early Retransmit (ER), Proportional Rate Reduction (PRR) and low latency sockets using Busy Poll

● 127.0.0.0/8 routing

● Useful for private blocks-depleted networks, providing local tenant systems a local network without the risk of clashing network blocks.

Other Network Features and Improvements

Optimal Performance and Monitoring


THERMOSTAT (FOR JVMs)PERFORMANCE CO-PILOT (PCP)

OPTIMAL PERFORMANCE VIA PROFILES

Optimal performance management via enhanced performance tuning at install, simplified instrumentation and tuning features, and performance monitoring tooling


Profiling and Monitoring - Tuna

● Tool for fine grained control

● Display applications / processes

● Displays CPU enumeration

● • Socket (useful for NUMA tuning)

● • Dynamic control of tuning

● Process affinity● Parent & threads● Scheduling policy● Device IRQ priorities, etc


Performance -Tuned

● Re-written for maintainability and extensibility.● Optional hook/callout capability● Adds concept of Inheritance (just like httpd.conf) ● Configuration is now consolidated a single tuned.conf

file● Profiles updated for RHEL7 features and characteristic


Performance - numabalance

● Simplify and automate numa management

● numabalance scheduler● Tries to move/keep tasks and their memory

“NUMA-local”● Enable / Disable / Tracing ● sysctl kernel.numa_balancing=0/1● perf list | grep numa

Windows Interoperability


“Windows Domain interoperability is what I am looking forward to. We have a large Windows domain with 10k Windows workstations and 1300 Windows servers. Being able to authenticate and interact with Active Directory is a very high priority for us.”1

Lynn Dixon, System Administrator, Mohawk Industries

WINDOWS INTEROPERABILITYVIA DIRECT INTEGRATION

1 Source: Research by TechValidate: www.techvalidate.com/product-research/red-hat-enterprise-linux

MICROSOFTACTIVE DIRECTORY

SSSD

RHEL


WINDOWS INTEROPERABILITYVIA INDIRECT INTEGRATION

1 Source: Research by TechValidate: www.techvalidate.com/product-research/red-hat-enterprise-linux

MICROSOFTACTIVE DIRECTORY

SSSD

RHEL

IDENTITYMANAGEMENT

TRUST

ALLOWS FOR EASIER CENTRALIZED NATIVE LINUX MANAGEMENT OF MULTIPLE LINUX CLIENTS



STREAMLINED INSTALLATION AND

DEPLOYMENT

OPTIMAL PERFORMANCEVIA PROFILES

SYSTEM MANAGEMENT VIA OPENLMI

SCALABLE FILE SYSTEMS

WINDOWS INTEROPERABILITY

LIGHTWEIGHT APPLICATION ISOLATION

(LINUX CONTAINERS)

RED HAT ENTERPRISE LINUX 7 HIGHLIGHTSS

TAB

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AN

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EF

FIC

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XIB

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CERTAINTY OF MISSION-CRITICAL RELIABILITY AND MILITARY-GRADE SECURITY



RED HAT ENTERPRISE LINUX 7RETHINK YOUR ENTERPRISE OS

STABILITY to efficiently meet current challenges of datacenter virtualization and cloud

FLEXIBILITY to quickly adapt to demands for business agility

CERTAINTYof mission-critical reliability and military-grade security

90% OF FORTUNE 500 COMPANIES TRUST RED HAT ENTERPRISE LINUX FOR THEIR CRITICAL BUSINESS INFRASTRUCTURE.

THANK YOU!

Rodrigo Freire

[email protected]

http://people.redhat.com/rfreire/cce-rhel7-rio.pdf

REDEFINING THE ENTERPRISE OS RED HAT ENTERPRISE LINUX 7 › rfreire › cce-rhel7-rio.pdf · RED...

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