SOAP endpoint returning 400 Bad Request
This SOAP request which used to work every time now suddenly started to receive 400 Bad Request. Spent hours analyzing logs without any hint towards the cause of problem. The second day we are told that the Web App is also reporting bad request on simple HTTP calls. We are analyzing Apache access logs and than accidentally we see something unbelievable. The /tmp partition is only 11 MB and 30% is already in use. Apache is using /tmp to store temporary files specially when uploads are performed. Our App also relies on /tmp to store temporary files, other frameworks or apps from time to time might need /tmp files. Since /tmp is a special partition, various Linux distributions or kernels might react differently when the space becomes full. So quite a random situation.