Clean up cilium bpf programs

clean-cilium-state.sh

#!/usr/bin/env bash

if [[ "${EUID}" -ne 0 ]]; then
    echo "This script must be run as root"
    exit 1
fi

while read -r cgroup_json; do
    cgroup="$(jq -r .cgroup <<<"${cgroup_json}")"
    # Don't want to detach systemd programs. Cilium attaches its program at the root and under docker.
    if [[ "${cgroup}" != "/sys/fs/cgroup/unified" ]] && [[ "${cgroup}" != "/sys/fs/cgroup/unified/docker/"* ]]; then
        continue
    fi
    while read -r id attach_type; do
        bpftool cgroup detach "${cgroup}" "${attach_type}" id "${id}"
    done < <(jq -r '.programs[] | [.id,.attach_type] | @tsv' <<<"${cgroup_json}")
done < <(bpftool cgroup tree /sys/fs/cgroup/unified --json | jq -c '.[]')