SaltStack Minion Not Connecting
SaltStack minions do not connect when master key is rejected.
Category archive
Systems fixes
Published troubleshooting guides for systems issues.
Chef Client Run Failed
Chef client runs fail when cookbook dependency is not resolved.
Puppet Catalog Compilation Failed
Puppet catalogs fail to compile when manifest syntax is invalid.
Ansible Module Import Failed
Ansible module imports fail when Python dependency is missing.
Pulumi Stack Lock Stuck
Pulumi stack locks are stuck when operation is interrupted.
Helm Chart Template Render Failed
Helm chart templates fail when values do not match schema.
Skopeo Copy Failed
Skopeo image copy fails when registry authentication is wrong.
Buildah Build Slow
Buildah builds are slow when layer cache is not utilized.
Podman Rootless Network Failed
Podman rootless networking fails when slirp4netns is missing.
CRIO Runtime Not Starting
CRIO container runtime fails to start when storage is misconfigured.
etcd WAL Corrupted
etcd write-ahead log is corrupted after power failure.
Kubelet Pod Volume Mount Failed
Kubelet cannot mount volumes when node disk is full.
OPA Gatekeeper Violation False
OPA Gatekeeper reports false violations when constraint is wrong.
Falco Syscall Alert False
Falco generates false alerts when rule conditions are too broad.
Linkerd Proxy Injection Failed
Linkerd sidecar injection fails when webhook is misconfigured.
Istio Certs Not Rotating
Istio workload certificates do not rotate when citadel is broken.
CNI Plugin IPAM Failed
CNI IPAM fails when address pool is exhausted.
Runc Exec Failed Permission
Runc exec fails when seccomp profile blocks syscall.
Containerd OOM Shim Kill
Containerd OOM killer terminates shims when memory cgroup is exceeded.
Node Exporter Metric Not Collected
Node exporter metrics are missing when collector is disabled.
Grafana Loki Chunk Flush Failed
Loki chunk flushes fail when ingester memory is exhausted.
Prometheus Remote Write Backlog
Prometheus remote write backlog grows when endpoint is slow.
Terraform Provider Crash
Terraform providers crash when Go runtime panic occurs.
Nomad Job Pending Forever
Nomad jobs stay pending when no nodes satisfy constraints.
Vault Lease Not Renewed
Vault leases expire when renewal task is not running.
Consul DNS Resolution Wrong
Consul DNS returns wrong addresses when service tags are misconfigured.
Consul Service Deregistration
Consul services are deregistered when health check TTL expires.
Envoy Hot Restart Failed
Envoy hot restart fails when previous instance still holds listeners.
HAProxy Log Not Writing
HAProxy logs are not written when rsyslog socket is misconfigured.
Nginx Upstream Timeout Consistent
Nginx upstream timeouts occur consistently when backend is overloaded.
Rust Arc Mutex Deadlock
Rust Arc<Mutex> deadlocks when lock is acquired in wrong order.
Rust Macro Expansion Error
Rust macros fail to expand when token tree does not match pattern.
Rust Unsafe Code Undefined Behavior
Rust unsafe code causes UB when invariants are violated.
Rust Send Sync Violation
Rust Send/Sync errors occur when type is not thread-safe for sharing.
Rust Cargo Dependency Conflict
Rust cargo build fails when dependency versions are incompatible.
Rust Async Runtime Panic
Rust async runtimes panic when blocking operation is called in async context.
Rust Trait Bound Not Satisfied
Rust trait bounds fail when generic type does not implement required trait.
Rust Ownership Move Error
Rust ownership errors occur when value is used after being moved.
Rust Lifetime Annotation Missing
Rust lifetime errors occur when compiler cannot infer reference lifetimes.
Rust Borrow Checker Error
Rust borrow checker rejects code when mutable and immutable borrows conflict.
Go SQL Database Connection Pool
Go SQL connection pool exhaustion occurs when maxOpenConns is too low.
Go JSON Unmarshal Type Error
Go JSON unmarshal fails when target type does not match JSON structure.
Go HTTP Client Connection Pool
Go HTTP client connections leak when response body is not closed.
Go Context Deadline Exceeded
Go context deadlines expire when operation takes longer than timeout.
Go Interface Nil Check
Go interface nil checks fail when concrete value is nil but type is not.
Go Panic Recover Not Working
Go recover does not catch panic when not called in deferred function.
Go Channel Deadlock
Go channels deadlock when send and receive operations block each other.
Go Goroutine Leak
Go goroutines leak when channel operations block forever or context is not cancelled.
Go Race Detector Positive
Go race detector finds data races when concurrent access is not synchronized.
Go Module Download Failed
Go module download fails when proxy is unreachable or checksum database rejects.