Here are the advanced bug fixing tasks about DevSecOps in Terraform manifests for GitLab CI/CD pipelines, now with concrete example snippets and solutions:

1. Production Pipeline: Misconfigured Terraform State Backends

Problem:
The terraform apply step in your production GitLab CI pipeline fails with errors related to locked state files or concurrent access conflicts.

Example and Solution:

In your Terraform manifest (e.g., backend.tf), configure the backend with proper state locking using AWS S3 and DynamoDB for locking:

Here are three advanced bug examples and solutions related to modern GitLab CI/CD DevSecOps pipelines with security best practices and explanations. These focus on common pitfalls and necessary configurations for secure, robust pipelines using .gitlab-ci.yml.

Advanced Bug Example 1: Secrets Leakage via Unprotected Variables

Buggy .gitlab-ci.yml snippet:

stages:
  - build
  - deploy

variables:
  DB_PASSWORD: "SuperSecretPassword"

build_job:
  stage: build
  script:
    - echo "Building the app..."
    - ./build-script.sh

deploy_job:
  stage: deploy
  script:
    - echo "Deploying with password $DB_PASSWORD"

Problem: