Batch cert expiry scan troubleshooting
Loop many hosts to print notAfter dates; pipe to sort for soonest expiry
for h in $(cat hosts.txt); do echo -n "$h "; echo | openssl s_client -connect $h:443 -servername $h 2>/dev/null | openssl x509 -noout -enddate; done
more troubleshooting
all 32 commands →
Decode JWT claims
cut -d. -f2 <<<"$JWT" | tr '_-' '/+' | base64 -d 2>/dev/null | jq .
List gRPC services via reflection
grpcurl -plaintext <host>:<port> list; grpcurl -plaintext <host>:<port> describe <svc>
Per-thread CPU breakdown
pidstat -t -p <pid> 1
Hot thread live view
top -H -p <pid>
Per-core CPU saturation
mpstat -P ALL 1