I recently found out that AWS CodeBuild now has a native integration with GitLab and GitLab Self-Managed, so I tried to move our CI/CD to AWS. Initial tests were fine; things were working, but suddenly the webhooks stopped triggering. There were no signs of them in CloudTrail and no indications of anything wrong; all responses were 200s in the GitLab webhook settings. I thought the filters might be causing the issue, so I removed all of them to ensure any code change would trigger a build. Still, nothing happened. The next day, I got to work and saw that 50 different triggers had fired that morning from other people’s code changes, and everything was working again. I rebuilt the filters, and the job was getting done. However, the day after, nothing worked again.