high availability
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Solved: me-central-1 AZ mec1-az2 down due to power outage/fire
An AWS AZ like me-central-1 can fail. Get a Senior DevOps Engineer’s real-world playbook for surviving an outage, from quick hacks to long-term resili Continue reading
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Solved: Silent behavioral change in NLB DNS publishing for empty AZs? (Breaking change for DR/Failover)
A silent AWS NLB change to DNS for empty AZs is breaking disaster recovery plans. Learn why your failover might fail and find three practical fixes. Continue reading
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Solved: Multi primary VRRP/CARP net loadbalance setup
Learn why using VRRP/CARP for multi-primary load balancing fails. Understand ARP flux and discover robust, production-ready high availability patterns Continue reading
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Solved: Is a Dell poweredge server a good on premise server for web apps ?
Using a Dell PowerEdge for your on-premise web app? Learn why a single server is a major risk and how to build a resilient, virtualized setup. Continue reading
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Solved: Wedding venue is failing
System down? Our DevOps guide to production outages covers immediate and permanent fixes to save your critical system’s “big day” from total failure. Continue reading
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Solved: Cloudflare is down again. Two outages in two weeks. Anyone else concerned about the dependency chain here?
Cloudflare outage breaking your apt or yum commands? Learn why your server’s DNS fails and get three levels of fixes to prevent this critical downtime Continue reading
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Solved: Pacemaker/DRBD: Auto-failback kills active DRBD Sync Primary to Secondary. How to prevent this?
Prevent Pacemaker/DRBD auto-failback from killing your active primary. Learn to stop recovering nodes from disrupting services and ensure graceful fai Continue reading