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problems
problems
9 items under this folder.
Aug 22, 2026
A 40-minute outage passed with no alert, and the error-rate panel showed a flat line
target/prometheus
layer/observability
symptom/silent-failure
Aug 22, 2026
connect() fails with "cannot assign requested address" at peak, and the downstream is healthy
target/golang
target/linux
layer/capacity
symptom/intermittent-failure
Aug 22, 2026
df says the disk is full, du says it is half empty
target/nginx
layer/storage
symptom/resource-exhaustion
symptom/silent-failure
Aug 22, 2026
DNS lookups inside pods intermittently take exactly 5 seconds
target/kubernetes
target/coredns
layer/network
symptom/intermittent-failure
symptom/latency
Aug 22, 2026
p99 latency spikes to 400ms while CPU utilisation sits at 30%
target/kubernetes
target/golang
layer/compute
symptom/latency
Aug 22, 2026
"prepared statement does not exist" appears only under concurrency, never in staging
target/pgbouncer
target/postgres
layer/config
symptom/intermittent-failure
Aug 22, 2026
The same query is fast on a fresh connection and slow forever after the fifth run
target/postgres
layer/database
symptom/latency
Aug 22, 2026
TLS fails from every service, but the site loads fine in a browser
target/nginx
layer/auth
symptom/outage
Aug 22, 2026
Writes keep failing with "read-only transaction" long after the failover finished
target/aws-rds
target/postgres
layer/dns
symptom/outage