iSula FAQ ​

1. Changing iSulad Default Runtime to lxc Causes Container Startup Error: Failed to Initialize Engine or Runtime ​

Cause: iSulad uses runc as its default runtime. Switching to lxc without the required dependencies causes this issue.

Solution: To set lxc as the default runtime, install the lcr and lxc packages. Then, either configure the runtime field in the iSulad configuration file to lcr or use the --runtime lcr flag when launching containers. Avoid uninstalling lcr or lxc after starting containers, as this may leave behind residual resources during container deletion.

2. Error When Using iSulad CRI V1 Interface: rpc error: code = Unimplemented desc = ​

Cause: iSulad supports both CRI V1alpha2 and CRI V1 interfaces, with CRI V1alpha2 enabled by default. Using CRI V1 requires explicit configuration.

Solution: Enable the CRI V1 interface by modifying the iSulad configuration file at /etc/isulad/daemon.json.

{
    "enable-cri-v1": true,
}

When compiling iSulad from source, include the cmake option -D ENABLE_CRI_API_V1=ON to enable CRI V1 support.