Fix: Docker no space left on device (build, pull, or run)
How to fix the 'no space left on device' error in Docker when building images, pulling layers, or running containers, with cleanup and prevention strategies.
Tag: devops
13 articles
Fix: Terraform Failed to install provider (or Failed to query available provider packages)
How to fix 'Failed to install provider' and 'Failed to query available provider packages' errors in Terraform, covering registry issues, version constraints, network problems, platform support, and air-gapped environments.
Fix: Kubernetes Pod CrashLoopBackOff (Back-off restarting failed container)
How to fix the Kubernetes CrashLoopBackOff error when a pod repeatedly crashes and Kubernetes keeps restarting it with increasing back-off delays.
Fix: Error: Process completed with exit code 1 (GitHub Actions)
How to fix 'Process completed with exit code 1' and other GitHub Actions workflow failures. Covers reading logs, exit codes, Node.js/Python/Docker step failures, secrets and environment variables, GITHUB_TOKEN permissions, checkout issues, caching, timeouts, self-hosted runners, matrix strategy, and artifacts.
Fix: curl: (7) Failed to connect / (6) Could not resolve host / (28) Operation timed out
How to fix curl errors including 'Failed to connect to host', 'Could not resolve host', 'Operation timed out', and 'SSL certificate problem'. Covers curl exit codes 6, 7, 28, 35, 56, and 60, DNS resolution, proxy settings, timeout tuning, SSL issues, retry strategies, verbose debugging, and more.
Fix: Error Acquiring the State Lock (Terraform)
How to fix 'Error acquiring the state lock', 'Error locking state', 'Failed to load backend', and other common Terraform state and backend errors. Covers force-unlock, DynamoDB lock tables, S3 backend issues, state file corruption, and provider version conflicts.
Fix: SSL certificate problem: unable to get local issuer certificate
How to fix 'SSL certificate problem: unable to get local issuer certificate', 'CERT_HAS_EXPIRED', 'ERR_CERT_AUTHORITY_INVALID', and 'self signed certificate in certificate chain' errors in Git, curl, Node.js, Python, Docker, and more. Covers CA certificates, corporate proxies, Let's Encrypt, certificate chains, and self-signed certs.
Fix: YAML 'mapping values are not allowed here' and Other YAML Syntax Errors
How to fix 'mapping values are not allowed here', 'could not find expected :', 'did not find expected key', and other YAML indentation and syntax errors in Docker Compose, Kubernetes manifests, GitHub Actions, and config files.
Fix: Nginx 502 Bad Gateway
How to fix Nginx 502 Bad Gateway errors caused by upstream server issues, wrong proxy_pass configuration, PHP-FPM socket problems, timeout settings, SELinux, Docker networking, and more.
Fix: Docker Container Exited (137) OOMKilled / Killed Signal 9
How to fix Docker container 'Exited (137)', OOMKilled, and 'Killed' signal 9 errors caused by out-of-memory conditions in Docker, Docker Compose, and Kubernetes.
Fix: ssh: connect to host – Connection timed out / Connection refused / No route to host
How to fix SSH 'Connection timed out', 'Connection refused', and 'No route to host' errors. Covers firewall rules, SSH service, security groups, custom ports, VPN issues, bastion hosts, and sshd_config troubleshooting.
Fix: Unable to Locate Credentials (AWS CLI / SDK)
How to fix 'Unable to locate credentials', 'NoCredentialProviders: no valid providers in chain', and 'The security token included in the request is expired' errors in AWS CLI, SDKs, and applications running on EC2, ECS, Lambda, and Docker.
Fix: The Connection to the Server localhost:8080 Was Refused (kubectl)
How to fix 'the connection to the server localhost:8080 was refused' and other kubectl connection errors when the Kubernetes API server is unreachable.