Docker cgroup Memory Limit Not Enforced
Docker cgroup memory limits are not enforced when kernel memory accounting is disabled.
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Docker fixes
Published troubleshooting guides for docker issues.
Docker User Namespace Remapping Permission Error
Docker user namespace remapping causes permission errors on volume mounts.
Docker Container Read-Only Filesystem
Docker container fails to write when filesystem is mounted read-only.
Docker Image Layer Corruption
Docker image layers become corrupted after interrupted pull or build operations.
Docker runc Exec Failed
Docker runc fails to execute container when OCI specification is violated.
Docker containerd Not Responding
Docker containerd shim becomes unresponsive when runtime is stuck or resources exhausted.
Docker Hyper-V Network NAT Failure
Docker Hyper-V NAT networking fails when vSwitch is misconfigured.
Docker Windows Container Path Issue
Docker Windows container fails when volume paths use Unix-style instead of Windows paths.
Docker Entrypoint Override Ignored
Docker entrypoint override is ignored when ENTRYPOINT uses exec form incorrectly.
Docker Build Arg Not Substituted
Docker build argument is not substituted when ARG is declared after usage or scope is wrong.
Docker Proxy Process Leaking
Docker leaves zombie proxy processes that consume resources after container removal.
Docker iptables Forwarding Blocked
Docker container traffic is blocked when iptables FORWARD chain policy is DROP.
Docker Container /etc/hosts Not Updating
Docker container hosts file is stale when linked containers are recreated.
Docker BuildKit Build Slow
Docker BuildKit builds are slower than expected when cache is misconfigured.
Docker Trust Sign Verification Failed
Docker content trust verification fails when image signature is invalid or expired.
Docker Registry GC Corrupting Manifest
Docker registry garbage collection removes layers still referenced by manifests.
Docker Container PID Exhaustion
Docker container cannot start new processes when PID namespace limit is reached.
Docker Ulimit File Descriptor Exhaustion
Docker container runs out of file descriptors when ulimit is set too low.
Docker AppArmor Denying Operation
Docker container operations are denied when AppArmor profile blocks specific actions.
Docker Seccomp Profile Blocking Syscall
Docker container fails system calls when seccomp profile is too restrictive.
Docker Layer Caching Inefficient
Docker build does not benefit from layer caching when Dockerfile instructions are poorly ordered.
Docker Build Context Too Large
Docker build is slow when build context includes unnecessary files from .dockerignore.
Docker GPU Not Accessible
Docker container cannot access NVIDIA GPU when nvidia-container-toolkit is not installed.
Docker IPv6 Not Working
Docker IPv6 networking fails when daemon is not configured with ipv6 and fixed-cidr-v6.
Docker Macvlan Network Isolation
Docker macvlan network isolates containers from host when L2 switching is misconfigured.
Docker Container Restart Loop
Docker container continuously restarts due to application crashes or misconfigured entrypoint.
Docker Image Tag Not Found
Docker cannot find specified image tag when it does not exist in the registry.
Docker Container Cannot Connect to Host
Docker container cannot reach host services when host networking is blocked by firewall rules.
Docker Overlay2 Corrupted
Docker overlay2 storage driver becomes corrupted after unclean shutdown or disk errors.
Docker Rootless Mode Permission Issue
Docker rootless mode fails when user namespace mappings or systemd scope are misconfigured.
Docker Container Wrong Timezone
Docker container shows incorrect timezone when TZ environment variable is not set.
Docker Swarm Node Unreachable
Docker Swarm manager loses connectivity to worker nodes due to network partition or firewall rules.
Docker Swarm Service Pending
Docker Swarm service remains in Pending state when no nodes satisfy placement constraints.
Docker Container Cannot Resolve DNS
Docker container DNS resolution fails when docker0 bridge or resolv.conf is misconfigured.
Docker Healthcheck Always Unhealthy
Docker container health check continuously reports unhealthy when command is misconfigured.
Docker Multi-Stage Build Failure
Docker multi-stage build fails due to missing artifacts, path errors, or build argument issues.
Docker Build Fails No Space Left
Docker image build fails when build cache or intermediate layers consume all available space.
Docker Logs Not Appearing
Docker container logs are empty or not updating when logging driver is misconfigured.
Docker Container High CPU Usage
Docker container consumes excessive CPU due to application bugs, crypto mining malware, or misconfiguration.
Docker Port Already in Use
Docker container cannot bind to host port when another process is already using it.
Docker Registry Authentication Failed
Docker cannot authenticate to private registry due to expired credentials or misconfigured auth.
Docker Container OOM Killed
Docker container is terminated by OOM killer when memory limits are exceeded.
Docker Compose Service Unavailable
Docker Compose fails to start services due to dependency.net issues, missing images, or configuration errors.
Docker Volume Mount Permission Denied
Docker container cannot access mounted volume due to SELinux, AppArmor, or filesystem permissions.
Docker Network Not Working
Docker container networking fails when bridge network is misconfigured or iptables rules block traffic.
Docker Disk Space Exhausted
Docker consumes all available disk space through image cache, container logs, and volumes.
Docker Image Pull Timeout
Docker image pull times out due to network connectivity, registry unavailability, or large image size.
Docker Container Exits Immediately
Docker container exits with code 0 or 1 when the main process completes or encounters an error.
Docker Daemon Not Starting
Docker daemon fails to start due to storage driver issues, configuration errors, or port conflicts.