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Configure High Availability
without PACEMAKER
onLinux
Edwin M Sarmientohttps://LearnSQLServerHADR.comedwin@EdwinMSarmiento.com@EdwinMSarmientohttp://ca.linkedin.com/in/EdwinMSarmiento
Microsoft MVP/Microsoft Certified Master: SQL Server
in
POLL QUESTION#1
POLL QUESTION#2
1you have an understanding of how Windows Server Failover Clustering
WORKS
ASSUMPTIONS
2you have an understanding of how SQL Server Always On
(Availability Groups or Failover Clustered Instances)
WORKS
ASSUMPTIONS
the second-largestdiscount store retailer in the United States
just because SOMETHING WORKS
IT ALWAYS WILLdoesn’t mean
same COMPANY
COUNTRYdifferent
just because you know Windows HA
Linux HA will be easydoesn’t mean
same SQL Server
Operating Systemdifferent
*you can apply the same principles
SQL Serverhigh availability
log data
windows high availability
Windows Server Failover Cluster
SQL Server
2-node clustert r a d i t i o n a l
log data*Availability Groups
data data
2-node clustert r a d i t i o n a l
windows high availability
SQL Server
Windows Server Failover Cluster
SQL Server
log data*Availability Groups
data data
2-node clustert r a d i t i o n a l
windows high availability
SQL Server
Windows Server Failover Cluster
SQL Server
cluster resource manager
(CRM)
cluster resource manager
(CRM)
SOFTWARE that runs on all of the nodes in the cluster responsible for maintaining a
consistent image of the cluster
“
cluster resource manager
(CRM)
the GOAL is to provide high availability and fault tolerance to resources running on top of the cluster
“
Cluster ServiceClusSvc.exe
Database Manager Failover Manager
Node Manager
Resource MonitorsR H S . e xe
Global Update Manager
Checkpoint Manager Membership Manager Resource Control Manager
Registry
File System
C l u s t e r A P I
M a n a g e m e n t To o l sP o w e r S h e l l , M M C , W M I
Resource DLL
Cluster-awareapplication
Resource DLL
Clusterr e s o u r c e
WSFC Nodes
POLL QUESTION#3
POLL QUESTION#4
SQL Serverhigh availability Linux
log data*Availability Groups
data data
2-node clustert r a d i t i o n a l
SQL Server SQL Server
linux high availability
Pacemaker
cibCluster Information Base
PEnginePolicy Engine
STONITHd
CRMdCluster Resource Management Daemon
Resource Agents
Clusterr e s o u r c e
Cluster Nodes
Pacemaker
linux high availability
ccmConsensus Cluster Membership
heartbeatLRMdLocal Resource
Manager Daemon
Corosync
Linux
Linuxvs
F a i l o v e r C l u s t e r i n g Pacemaker
SQL Serverhigh availability
LinuxvsF a i l o v e r C l u s t e r i n gPacemake
r
COMMUNICATION
2-way 1-wayin Windows, WSFC talks to SQL Server and vice versa
in Linux, only Pacemaker can talk to SQL Server
LinuxvsF a i l o v e r C l u s t e r i n gPacemake
r
COUPLING
tight loosein Windows, changes made in SQL Server is propagated to the
WSFC and vice versain Linux, Pacemaker does not see changes made in SQL Server
LinuxvsF a i l o v e r C l u s t e r i n gPacemake
r
WINDOWS INTEGRATION
tight loosein Windows, you can use Windows authentication to configure AG
in Linux, you can only use certificates to configure AG
DEMO configure high availability for
SQL Server on Linux w i t h P a c e m a k e r
THERE IS ABETTERWAY
IS A
configure high availability for
SQL Server on Linux w i t h o u t P a c e m a k e r
DxEnterprise
• 3rd party cluster manager• run in production environments since 2011• FEATURES • “clustered instances” and Availability Groups• supports SQL Server instances 2005+• supports any Docker Container• runs on Windows and Linux• easy setup and administration
DH2i’s DxEnterprise
DEMO configure high availability for
SQL Server on Linux without PacemakerDxEnterprise
create cluster across RHEL, Ubuntu, and Windows
manage an Availability Group & test automated HA
demo “FCI” and Docker management
tourconsolidated SQL Server cluster on Windows
Get in touchinfo@dh2i.com
DxEnterprise FREE trialhttp://dh2i.com/trial
Learn more http://dh2i.com
DH2i softwarewant to learn more about
FREE TRIAL
Edwin M Sarmiento
http://www.EdwinMSarmiento.comEdwin@EdwinMSarmiento.com@EdwinMSarmientohttp://ca.linkedin.com/in/EdwinMSarmiento
Microsoft MVP/Microsoft Certified Master: SQL Server
in
QUESTIONS
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