When a Database Outage Turns Into a Comedy of Errors: A Real‑World Ops Tale
A chaotic incident‑response story shows how a DBA and SA scramble through VPN glitches, broken jump servers, log hunting, ad‑hoc config tweaks, unexpected bugs, security scans, and frantic firefighting to finally restore a production system, highlighting the messy reality of modern operations.
DBA and SA collaborated to investigate a critical issue.
When handling an urgent failure, the VPN connection looked like this.
Looking at the logs revealed strange entries.
The jump server was broken.
We let the program run first to see what happened.
During the first joint debugging session, things got even stranger.
Everything seemed fine, so we pushed to production.
It turned out we only manually restarted the program.
We had set only set global sql_slave_skip_counter=1.
We copied a configuration file from the internet.
After copying, the system mysteriously started working.
We encountered a one‑in‑ten‑thousand bug.
Security said: "I'll scan the backdoor..."
Security also claimed a precise port scan wouldn't affect normal business.
After the failure, we created a scene of a network being cut over.
DBA exclaimed: "Got stripped physically?"
I even "touched" a file, which seemed unbelievable.
Users were using the ops tool in unexpected ways.
Even when following the manual perfectly, problems persisted.
It turned into nonstop firefighting.
After a long day, we finally said good night.
2019 has just passed, and we thank the teammates who fought alongside us throughout the year.
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