Standard Operating Procedure – Unis V4.2.7.18 Deployment
| Error Message | Likely Cause | Solution | |---------------|--------------|----------| | Failed to bind port 8080 | Another process using port | Run netstat -tulnp | grep 8080 and kill the process | | Segmentation fault (core dumped) | Incompatible libssl version | Update OpenSSL to 1.1.1 or later | | Error: missing libcrypto.so.1.1 | Missing OpenSSL dependency | apt install libssl1.1 (Ubuntu) or yum install openssl11 (RHEL) | | WebSocket handshake failed | Firewall blocking upgrade | Allow TCP port 8080 and check proxy settings | | Memory allocation of 4GB failed | 32-bit OS or low swap | Use 64-bit OS or increase swap file to 8GB | Unis V4.2.7.18 Setup