Mara Voss
MARA VOSS
Docker, system limits and reverse proxies.
Mara Voss covers the systems layer: Docker daemon failures, Linux resource limits and file descriptors, exec and shebang problems, OpenSSL provider changes, and the proxy errors (499, socket hangs, unexpected EOF) that appear between a client and an origin.
Method: limits are measured with the runtime that hits them, and every suggestion comes with the command that shows whether it worked. Distribution-specific behaviour is labelled as such instead of being generalised.
Articles by Mara Voss
- "socket hang up" (ECONNRESET): who closed the socket? · 12 October 2026
- error:0A000126 unexpected eof while reading: fix the origin · 09 October 2026
- Exec format error (ENOEXEC): architecture or shebang? · 04 October 2026
- Operation not permitted in Docker: the capability wall · 01 October 2026
- ERR_OSSL_EVP_UNSUPPORTED: OpenSSL 3 legacy provider fix · 28 September 2026
- SSL_ERROR_RX_RECORD_TOO_LONG: HTTPS on a plaintext port · 23 September 2026
- Cannot connect to the Docker daemon: four branches behind one message · 16 September 2026
- System limit for number of file watchers reached in Docker · 12 September 2026
- Cloudflare Error 1020 Access Denied: Fix · 08 September 2026
- Docker driver failed programming external connectivity fix · 03 September 2026
- Tailscale SSL_ERROR_RX_RECORD_TOO_LONG: Fix HTTPS · 28 August 2026
- Nginx 499 Client Closed Request: Why It Happens, How to Fix · 25 August 2026