gvisor/content/docs/user_guide/debugging.md

+++ title = "Debugging" weight = 120 +++

To enable debug and system call logging, add the runtimeArgs below to your Docker configuration (/etc/docker/daemon.json):

{
    "runtimes": {
        "runsc": {
            "path": "/usr/local/bin/runsc",
            "runtimeArgs": [
                "--debug-log=/tmp/runsc/",
                "--debug",
                "--strace"
            ]
       }
    }
}

You may also want to pass --log-packets to troubleshoot network problems. Then restart the Docker daemon:

sudo systemctl restart docker

Run your container again, and inspect the files under /tmp/runsc. The log file with name boot will contain the strace logs from your application, which can be useful for identifying missing or broken system calls in gVisor.