#Reliability

$What Looked Like a Simple t4g.medium → t4g.large Swap — and How It Turned Into Confronting Jenkins' Structural Weaknesses

//What started as a simple t4g.medium → t4g.large instance swap turned into a chain of issues — Pulumi passphrase mismatch, a 17-minute EFS chown hang, and JCasC compatibility breakage — and ended up forcing me to face the structural weaknesses in our Jenkins operations.