Error map
Too many open files (macOS limits) macOS: Error: EMFILE: too many open files, watch / ulimit: setrlimit failed: invalid argument
macOS · layer 6, Platform & cloud
Centre: this error. First ring: errors it is linked with (8). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (8)
fork: retry: Resource temporarily unavailable (process/thread limit)
The user or container hit its maximum number of processes/threads (ulimit -u, pids cgroup), so new processes can’t be created.
Too many open files (EMFILE)
The process hit its file-descriptor limit — sockets, files and pipes all count.
Go: accept tcp [::]:8080: accept4: too many open files / open x: too many open files
The process reached its file-descriptor limit — usually leaked connections, files or response bodies.
macOS: -bash: fork: Resource temporarily unavailable (process limit reached)
The user hit the maximum number of processes (`kern.maxprocperuid`) — usually a fork bomb or runaway child processes.
Homebrew: Error: No available formula with the name "x". Did you mean ...?
Homebrew can't find a formula or cask with that name in the taps it knows.
Homebrew: Error: Your Command Line Tools (CLT) are too outdated. Update them from Software Update / Please update to the latest macOS
Homebrew requires a newer Command Line Tools version than the one installed.
Homebrew: Error: It seems there is already an App at '/Applications/Chrome.app'
A cask install failed because the app is already installed manually (or a leftover exists).
macOS (Apple Silicon): zsh: bad CPU type in executable: ./tool
You ran an Intel (x86_64) program on an Apple Silicon Mac without Rosetta 2 (or an arm64 binary on an Intel Mac).
Two steps away (24)
Error: listen EADDRINUSE: address already in use :::3000
Another process is already listening on that port.
Error: write EPIPE
Node wrote to a pipe or socket whose other end was already closed.
RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded
child_process.exec/execSync produced more output than its buffer allows (default 1 MB).
Error: ENOENT: no such file or directory
A file or directory the program tried to open doesn’t exist at that path.
Error: socket hang up / read ECONNRESET
The other side closed the TCP connection abruptly while your client was still using it.
MySQL ERROR 1040 (08004): Too many connections
MySQL reached `max_connections` and refuses new clients.
Error response from daemon: network X not found
The container or Compose project refers to a Docker network that doesn’t exist (any more).
Error response from daemon: Pool overlaps with other one on this address space
Docker tried to create a network whose subnet clashes with an existing Docker network (or a VPN/host route).
driver failed programming external connectivity on endpoint: iptables: No chain/target/match by that name
Docker’s iptables rules were wiped (firewalld/ufw reload, iptables flush) while Docker was running, so it can’t publish ports.
OSError: [Errno 98] Address already in use
The port your server wants to bind is already taken by another process.
KeyboardInterrupt (script stopped with Ctrl+C) / ^C traceback
The script was interrupted (Ctrl+C, SIGINT, or a container stop), producing a KeyboardInterrupt traceback.
fork: Cannot allocate memory / ENOMEM
The kernel refused a memory allocation — RAM and swap are exhausted, or overcommit/cgroup limits block it.
macOS: zsh: command not found: brew (Homebrew not on PATH on Apple Silicon)
Homebrew is installed in /opt/homebrew on Apple Silicon Macs, which isn’t on PATH until you add its shellenv line.
Homebrew: Error: Permission denied @ dir_s_mkdir - /usr/local/Cellar / /opt/homebrew is not writable
Homebrew can't write to its prefix because the folders are owned by another user or root.
Homebrew: Error: Failure while executing; `git fetch --force origin` exited with 128 / fatal: not in a git directory
`brew update` couldn't fetch the Homebrew repositories — network, a broken git state or safe.directory problems.
gyp: No Xcode or CLT version detected!
node-gyp on macOS can’t find the Xcode Command Line Tools to compile native modules.
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun
The Xcode Command Line Tools are missing or broken — typical right after a macOS update.
macOS: Agreeing to the Xcode/iOS license requires admin privileges, please run "sudo xcodebuild -license" and then retry this command
A new Xcode (or CLT) version needs its license accepted before command-line tools run.
macOS: xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance
A command needs the full Xcode app, but `xcode-select` points to the Command Line Tools only.
macOS: “app” cannot be opened because Apple cannot check it for malicious software / Apple could not verify “app” is free of malware that may harm your Mac
Gatekeeper blocked an app that is not notarized by Apple.
macOS: “app” can’t be opened because it is from an unidentified developer
Gatekeeper refuses to open an app that isn't signed with a registered Developer ID.
exec /usr/local/bin/docker-entrypoint.sh: exec format error
The container tried to run a binary built for a different CPU architecture (arm64 vs amd64) — or a script with a broken shebang /…
zsh: compinit: insecure directories, run compaudit for list. Ignore insecure directories and continue [y] or abort compinit [n]?
zsh refuses to load completions from directories owned by another user or writable by others.
zsh: no matches found: package[extra] (glob pattern not matched)
zsh treats `[ ]`, `*` or `?` in an argument as a glob and fails when nothing matches, unlike bash which passes the text through.
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