Background Context About the error:
From gitlab.cncf.ci/containerd crictl.md docs
"This could be that you are using an incorrect containerd configuration (maybe
from a Docker install). You will need to update your containerd configuration
to the containerd instance that you are running."
- I myself had installed docker, then yum installed crictl to investigate command syntax differences and ran into this.
- The resolution command posted in the linked doc only works if run as root, so here's a more generic version.
# Backup old containerd config (optional)
sudo mv /etc/containerd/config.toml /etc/containerd/config.bak
# Regenerate containerd config
sudo containerd config default | sudo tee /etc/containerd/config.toml
# Restart containerd
sudo systemctl restart containerd
# The above got it to work for me; but with some warnings
# and ignorable errors that looked this this:
sudo crictl ps
# WARN[0000] runtime connect using default endpoints: [unix:///var/run/dockershim.sock unix:///run/containerd/containerd.sock unix:///run/crio/crio.sock]. As the default settings are now deprecated, you should set the endpoint instead.
# ERRO[0002] connect endpoint 'unix:///var/run/dockershim.sock', make sure you are running as root and the endpoint has been started: context deadline exceeded
# WARN[0002] image connect using default endpoints: [unix:///var/run/dockershim.sock unix:///run/containerd/containerd.sock unix:///run/crio/crio.sock]. As the default settings are now deprecated, you should set the endpoint instead.
# ERRO[0004] connect endpoint 'unix:///var/run/dockershim.sock', make sure you are running as root and the endpoint has been started: context deadline exceeded
# CONTAINER IMAGE CREATED STATE NAME ATTEMPT POD ID
# ^-- The last line represents correct output, which is why
# I say ignorable warnings/errors, even the post command
# exit code seeable using 'echo $?' exit code shows success
# What cleaned up the errors for me was copy pasting the following
echo """
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
""" | sudo tee /etc/crictl.yaml
docker ps
# ^-- no more errors :)
# Note others may need to run one of these instead, based on their
# system's config, keep trying docker ps until one config works
echo """
runtime-endpoint: unix:///var/run/crio/crio.sock
image-endpoint: unix:///var/run/crio/crio.sock
""" | sudo tee /etc/crictl.yaml
echo """
runtime-endpoint: unix:///var/run/dockershim.sock
image-endpoint: unix:///var/run/dockershim.sock
""" | sudo tee /etc/crictl.yaml
