HIGH AVAILABLE CLUSTER MULTI-MASTER AND MASTER-SLAVE WITH DRBD + HA + OCFS2

WHO WE ARE?

FIRST SCHOOL AND CONSULTING LINUX IN BRAZIL.

17 YEARS OF PRATICE IN LINUX

12 YEARS WITH BEST LINUX IN BRAZIL

MORE THAN 50.000 STUDENTS TRAINED

MORE THEAN 5.000 CLIENTS TO DIFERENT PROJECTS

LPI-C ATP IN BRAZIL

MORE: www.utah.com.br

SOCIAL MEDIA

Follow! @fabioandpires

Follow! @utah_networxs

Enjoy! Utah Networxs

Speaker: Fabio Pires

Mini Curriculum:

Graduated in Computer ScienceGraduated in Bachelor of ComputingPost Graduate in Project Analysis and Systems - FATECPost Graduate in S.O. Linux - UFLALPICTeacher of Undergraduate and Graduate

Twitter in Spare TimeContact: fpires@utah.com.br

TARGET

PRESENT SOLUTIONS CLUSTER MULTI-MASTERS AND MASTER SLAVE TO WEB SERVER ENVIRONMENT WITH LAMP SERVICES (LINUX, APACHE, MYSQL AND PHP) USING FREE SOFTWARES DRBD + HEARTBEAT AND OCFS2.

WHATS A CLUSTER?

The cluster, or cluster of computers, is formed by a group computer, which uses a type special operating system classified as a distributed system.

It is often constructed from conventional computers (personal computers), which are networked and communicate through the system, working as a unified large machine.

Types of Clusters

HIGH AVAILABILITY

HIGH PERFORMANCE (must popular Beowulf).

LOAD BALANCE

HA CLUSTERS LAYOUT

MASTER SLAVEIt is when we have a primary node and another slave. Only the primary node provides particular network service for making to work with the secondary system failover.

MASTER SLAVE LAYOUT

HA CLUSTERS LAYOUT

MULTI-MASTERThe existence of two or more servers providing the same services on the network allowing the use of real-time both transparent to the network clients.

MULTI-MASTER LAYOUT

LVS

LVS

INTERNET

DRBD

It is an open source system created by a

Austrian company called LINBIT. Thesystem was built to allow mechanisms for highavailability Linux systems. Basically it's like a RAID a level between two or more nodes.

The second version of DRBD, DRBD +

already has native support for multi-masterbut it is paid.

More in: http://www.libit.com

DRBD LAYOUT M-S

HEARTBEAT

It is a term used when we want a particular service is always eliminating the maximum available time stop.

This service can be deployed on Linux by software called hearthbeat.

When we talk about high availability SLA and think about the amount of 9 (nine) after the comma. The more nine longer available.

OCFS2

Oracle Cluster File System is a Files created
and maintained by Oracle on the GNU / GPL License.

One of the characteristics is to provide OCFS
high performance and high availability in
addition to the varying size block, flexible allocation, journaling, creating I / O failover
and parallel.

ENVIRONMENT

Node 01hostname: jaspionIP: 172.158.50.100IP: 1.2.3.1Replicated Folders:/srv/www (master/master)/var/lib/mysql (master/slave)

Node 02hostname: jirayaIP: 172.158.50.200IP: 1.2.3.2Replicated Folders:/srv/www (master/master)/var/lib/mysql (master/slave)

SOFTWARES

OS Debian GNU Linux AMD_64

HA heartbeat

Replication drbd8-utils

FileSystem ocfs2-tools

WebServer apache2

Database mysql-server

LP php5

Application colabitive

Premisses

The partition does not receive the DRBD
file systems must possess

The heartbeat in the version used does not OCFS2 has system support.

The hardware for the deployment of cluster is recommended that they be identical.

drbd8-utils INSTALL FAST

Update /etc/apt/sources.list

# echo deb http://ftp.debian.org/debian squeeze main contrib non-free >> /etc/apt/sources.list

Update Mirrors List# apt-get update

Install package

# apt-get install drbd8-utils

MAIN DRBD CONF FILE

/etc/drbd.conf

heartbeat INSTALL FAST

# apt-get install heartbeat

MAIN HEARTBEAT CONF FILES

/etc/ha.d work directory

/etc/ha.d/ha.cf config files

/etc/ha.d/authkeys change key file

/etc/ha.d/haresources config resources

/etc/ha.d/resources.d resources ha

ocfs2-tools INSTALL FAST

# apt-get install ocfs2-tools

MAIN OCFS2 CONF FILES

/etc/ocfs/cluster.conf main conf file

/etc/defaults/o2cb init config files

DVIDAS

fpires@utah.com.br
cursos@utah.com.br

SOURCE

www.linbit.com

www.linux-ha.org

https://oss.oracle.com/projects/ocfs2/

Utah Cluster Course