[ Blog ] Veeam High Availability Cluster: #failover and automation - pt.2

Once the Veeam High Availability #Cluster has been created, there are two ways to perform the failover: manual and automated through Veeam ONE.

Manual failover does not require additional components to be installed, whereas automatic failover requires Veeam ONE to be installed and configured within your http://rviv.ly/yhouMN #veeamone

[ Blog ] Veeam High Availability Cluster: #failover and automation - pt.2

Once the Veeam High Availability #Cluster has been created, there are two ways to perform the failover: manual and automated through Veeam ONE.

Manual failover does not require additional components to be installed, whereas automatic failover requires Veeam ONE to be installed and configured within your http://rviv.ly/yhouMN #veeamone

[ Blog ] Veeam High Availability Cluster: #failover and automation - pt.2

Once the Veeam High Availability #Cluster has been created, there are two ways to perform the failover: manual and automated through Veeam ONE.

Manual failover does not require additional components to be installed, whereas automatic failover requires Veeam ONE to be installed and configured within your http://rviv.ly/yhouMN #veeamone

Почему ваш DR-план не сработает при реальной аварии (и что с этим делать)

Недавно на вебинаре Хайстекс разбирались реальные сценарии DR на практике. В чате трансляции зрители задали ряд технических вопросов, наиболее интересные из них легли в основу этого разбора.

https://habr.com/ru/companies/hstx/articles/1048140/

#аварийное_восстановление #disaster_recovery #RTO #RPO #репликация #failover #failback #резервное_копирование #виртуализация #хайстекс_акура

[ Blog ] Veeam High Availability Cluster: #failover and automation - pt.2

Once the Veeam High Availability #Cluster has been created, there are two ways to perform the failover: manual and automated through Veeam ONE.

Manual failover does not require additional components to be installed, whereas automatic failover requires Veeam ONE to be installed and configured within your http://rviv.ly/yhouMN #veeamone

Windows Cluster Failed With Duplicate IP Address Detected Error

Issue
1. Windows cluster server name and IP down.
2. When trying to bring it online, it gives duplicate IP detected error.
3. Unable to ping or find the duplicate IP from outside
4. Cluster validation does not give anything error

📖 Read more: https://sajalchoudhary.net/til/windows-cluster-failed-with-duplicate-ip-address-detected-error/

#windows #failover

Windows Cluster Packet Loss Causing Failover

Windows Failover Diagnostic logs might have error 2051.

📖 Read more: https://sajalchoudhary.net/til/windows-cluster-packet-loss-causing-failover/

#windows #failover #vmware

Windows Cluster on Vmware

The WSFC cluster heartbeat time-out must be modified at least to the values listed below:
(get-cluster -name ).SameSubnetThreshold = 10
(get-cluster -name ).CrossSubnetThreshold = 20
(get-cluster -name ).RouteHistoryLength = 40
The virtual hardware version for the WSFC virtual machine must be version 11 and later

📖 Read more: https://sajalchoudhary.net/til/windows-cluster-on-vmware/

#windows #failover

Три задачи discovery при работе с PostgreSQL master/replica — и как их решить

Когда у приложения появляется несколько хостов PostgreSQL, начинается головная боль: нужно динамически находить мастера после failover, выбирать реплику с нужным отставанием и гарантировать что пользователь не увидит устаревшие данные после своей же записи. DNS кешируется минутами, libpq не знает про lag, HAProxy не слышал про LSN. Разбираем как устроены существующие решения и как закрыть все три задачи через лёгкий HTTP сервис — pg-status .

https://habr.com/ru/articles/1047374/

#postgresql #репликация #failover #replication #python #sql #discovery #high_availability