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TROUBLESHOOTING.md

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Docker

The installation steps for docker depend on your OS.

(Note: If your host OS is Linux and Docker is installed via Snap.io there is known issue with docker cp. Either install via default docker guidelines, or copy to /tmp and find copied files in /tmp/snap.docker/tmp)

Copy Files from the Docker Container

If you want to copy the files from the container onto your host (e.g. to view the pdf file, or extract the generated asm) copy it as long as the container is running (i.e. with a different terminal) with docker cp CryptOpt:/root/CryptOpt/results/fiat/ /tmp and find on your host system /tmp/fiat/fiat_curve25519_carry_mul/....

Docker build errors 404

On some builds in some regions for bizarre phenomenon the apt install command errors with a 404 Not Found. (on systemd). The issue seems to be caused by caching. (For example docker may cache some layers from the quick install which are no longer valid a couple days later, when the full version is being evaluated.) If the apt update layer is cached, then some apt install's yield this error. You can hopefully resolve this issue with rebuilding the container without caching intermediate layers: use docker build . --no-cache -t cryptopt.

I've installed docker but get permission denied errors

Symptoms: docker ps gives:

permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json": dial unix /var/run/docker.sock: connect: permission denied

docker build ... gives:

ERROR: permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/_ping": dial unix /var/run/docker.sock: connect: permission denied

  1. Check Post install instructions here. Usually you need to add your user to the docker group or use $sudo docker all the time (former is preferred)

  2. Check sudo systemctl status docker and maybe start the docker daemon with sudo systemctl start docker

  3. Check if running docker ps gives CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES. Then you should be good to go.

Name already in use

When executing docker run -ti --name CryptOpt I get an error

docker: Error response from daemon: Conflict. The container name "/CryptOpt" is already in use by container "9c181e7e0aa52ab0d31040c36f793b221baf6f6d162daf668de2f949469df133". You have to remove (or rename) that container to be able to reuse that name.
  • (preferred) either remove the current Container with docker rm CryptOpt and try again, or
  • (will eventually clutter your system) use a different name docker run -ti --name CryptOpt2 cryptopt zsh, or
  • (same and you need to find the right container to copy files from docker ps -a may help) use no name docker run -ti cryptopt zsh, to get a name automatically randomly assigned, something like clever_wilson, gracious_hugle

I've lost connection to the container.

If you disconnect (CTRL+C) from the interactive session, the container dies. It can be restarted with docker start CryptOpt and can be attached to with docker attach CryptOpt. Then you should be back with abcdef1234#

I want another shell into the container

In order to open another shell into the contianer, you can run docker exec -ti CryptOpt zsh