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Stay informed and inspired with our blogs to navigate and resolve any technical challenges that you may encounter.
Fault tolerant service logging – How remote logging was made resilient to crashes
"Logs from alpha-p3 is missing!" We were responding to an issue raised by an onsite technician for a data center we managed. System logs from one server was missing in the central log server. It looked like the Rsyslog service that was used for central logging had...
Cornering an SLA killer – How systematic resolution of an OpenVZ crash protected uptime guarantees
It was a peaceful night shift at a data center we managed. Just a few routine server provisioning and customer queries were keeping us occupied. Suddenly all alarm bells started ringing. 25+ managed server instances had gone offline, and the alert priority was among...
Shell shock rescue – Tracing a bandwidth spike to outbound DDoS through the infamous Bash vulnerability
"This definitely is a problem with your monitoring system! I never used this bandwidth. I was on holiday!" The accounts department of the data center we managed referred this customer concern to us. His un-managed dedicated server showed a bandwidth spike of 20 times...
Reliable, scalable DNS – How DNS clustering and Centralized name servers resulted in fast, scalable and fault tolerant DNS service
The mood was upbeat. It was our weekly business review with a web host we support. Server improvements had resulted in zero service downtimes, and zero customer complaints on service reliability. It was time to figure out how to improve the infrastructure even...
No more “Sorry no backups” – Restore backups from any day using open source and cPanel backup utilities
"It makes no sense!", so started a tech support chat one Tuesday morning. An e-commerce site had seen a sudden drop in online orders, and the reason was traced to Google branding it as a malware source. The web site looked perfectly normal, and the webmaster was...
How to hire the best systems administrator – Top 5 characteristics of an ideal server administrator
One of the popular questions we get asked is, "When you hire system administrators what qualities do you look for?" Instead of boring you with our recruitment format, let's approach this question from another angle. Since 2001, Bobcares systems administrators have...
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