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: linux
20 articles
Fix: EACCES: permission denied, mkdir / open / unlink (Node.js)
How to fix EACCES permission denied errors in Node.js for mkdir, open, unlink, and scandir operations, covering npm global installs, Docker, NVM, CI/CD, and filesystem permissions.
Fix: MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket
How to fix MySQL ERROR 2002 (HY000) when the MySQL client can't connect through the Unix socket file on Linux, macOS, Docker, and WSL.
Fix: ENOSPC: System limit for number of file watchers reached
How to fix the ENOSPC file watchers error on Linux by increasing the inotify watch limit, configuring VS Code, optimizing watched files, and handling Docker/WSL edge cases.
Fix: python: command not found (or python3: No such file or directory)
How to fix 'python: command not found', 'python3: command not found', and wrong Python version errors on Linux, macOS, Windows, and Docker. Covers PATH, symlinks, pyenv, update-alternatives, Homebrew, and more.
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: Could not build wheels / Failed building wheel (pip)
How to fix pip 'ERROR: Could not build wheels', 'Failed building wheel', 'No matching distribution found', and 'error: subprocess-exited-with-error'. Covers missing C compilers, build tools, system libraries, Python version issues, pre-built wheels, and platform-specific fixes for Linux, macOS, and Windows.
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: bash: ./script.sh: Permission denied (Linux, macOS, WSL)
How to fix 'Permission denied' errors in bash, including chmod +x for scripts, file ownership with chown, EACCES in Node.js, Docker volume permissions, SELinux, ACLs, and WSL issues.
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: Access denied for user 'root'@'localhost' (MySQL ERROR 1045)
How to fix MySQL 'ERROR 1045 (28000): Access denied for user root@localhost (using password: YES/NO)' on Linux, macOS, Windows, and Docker. Covers password reset, auth plugin issues, skip-grant-tables recovery, MySQL 8 vs 5.7 differences, and host mismatches.
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: psql: error: connection to server refused (PostgreSQL)
How to fix 'could not connect to server: Connection refused', 'psql: error: connection to server at localhost port 5432 failed', and other PostgreSQL connection refused errors on Linux, macOS, Windows, and Docker.
Fix: error: externally-managed-environment (pip install)
How to fix the 'error: externally-managed-environment' and 'This environment is externally managed' error when running pip install on Python 3.11+ on Ubuntu, Debian, Fedora, and macOS.
Fix: Docker COPY Failed: File Not Found in Build Context
How to fix 'COPY failed: file not found in build context', 'failed to read dockerfile', 'failed to calculate checksum', and other Docker build errors caused by missing files.
Fix: ENOSPC: System Limit for Number of File Watchers Reached
How to fix 'Error: ENOSPC: system limit for number of file watchers reached', 'ENOSPC: no space left on device, watch', and 'EMFILE, too many open files' in Node.js, VS Code, and other dev tools on Linux, macOS, and WSL2.
Fix: Permission denied (publickey) – Git SSH Authentication Failed
How to fix 'git@github.com: Permission denied (publickey)' and 'fatal: Could not read from remote repository' when pushing or cloning over SSH. Covers key generation, ssh-agent, GitHub/GitLab setup, and edge cases.
Fix: EACCES permission denied when installing npm packages globally
How to fix 'Error: EACCES: permission denied, access /usr/local/lib/node_modules' when running npm install -g on macOS or Linux. Multiple solutions ranked by recommendation.
Fix: Docker Permission Denied While Trying to Connect to the Docker Daemon Socket
How to fix the 'permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock' error on Linux.