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FormationTechnologieSanté & Médecine
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HIGH AVAILABILITY CLUSTER
[object Object]
They operate by having redundant computers or nodes which are then used to provide service when system components fail.INTRODUCTION
Types Of Cluster 1) Load Balancing Cluster 2) Computing Cluster
Working of HA Cluster ,[object Object]
Failover - if 1 node shuts down or fails, another node takes over application load ,[object Object],[object Object]
[object Object],Reliability - high degree of protection for corporate data. Information is a crucial business asset. Availability - near continuous data access Serviceability - procedures to correct problems with minimal business impact Reliability, Availability, Serviceability (RAS)
FAIL_FAST: The try fails, if the first node cannot be reached. ON_FAIL_TRY_ONE_NEXT_AVAILABLE: Tries one more host before giving up ON_FAIL_TRY_ALL_AVAILABLE: Tries all existing nodes before giving up Fail Over Strategies

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HA clusters

  • 2.
  • 3. They operate by having redundant computers or nodes which are then used to provide service when system components fail.INTRODUCTION
  • 4. Types Of Cluster 1) Load Balancing Cluster 2) Computing Cluster
  • 5.
  • 6.
  • 7.
  • 8. FAIL_FAST: The try fails, if the first node cannot be reached. ON_FAIL_TRY_ONE_NEXT_AVAILABLE: Tries one more host before giving up ON_FAIL_TRY_ALL_AVAILABLE: Tries all existing nodes before giving up Fail Over Strategies
  • 9. Applications of HA Cluster Used for critical databases, file sharing, e-commerce websites. heartbeat private network connection which is used to monitor the health and status of each node Split brain condition must be solved Various Node configurations