containerd, the runtime K3s uses, is surprisingly flexible, and you can tweak its behavior without rebuilding K3s itself.
Here’s K3s running a basic Nginx pod, showing the core components in action:
# On a K3s node
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Pod
metadata:
name: nginx-test
spec:
containers:
- name: nginx
image: nginx:latest
ports:
- containerPort: 80
EOF
# Wait for the pod to be ready
kubectl wait --for=condition=ready pod/nginx-test --timeout=60s
# Get the pod details, note the container runtime
kubectl describe pod nginx-test | grep -i runtime
You’ll see something like Container Runtime: containerd://1.x.x. This is the daemon K3s talks to for managing containers.
By default, K3s configures containerd for you, aiming for a sensible balance of performance and resource usage. However, you might want to tune it for specific workloads, like those needing lower latency or higher I/O throughput. The primary way to do this is by modifying containerd’s configuration file, which K3s manages.
K3s places the containerd configuration at /var/lib/rancher/k3s/agent/etc/containerd/config.toml. You can directly edit this file, but remember that K3s might overwrite it on agent restarts if it detects certain changes or upgrades. A more robust method is to provide custom configuration snippets that K3s will merge. K3s looks for .toml files in /etc/rancher/k3s/agent/pod-runtime-hash/containerd/config.d/ and merges them into its main config.toml. The pod-runtime-hash is a unique identifier for the current K3s agent configuration, ensuring your custom settings are applied correctly.
Let’s say you want to optimize containerd for faster container startup by reducing the default idle timeout for containers. The default is usually 30 seconds. We can shorten this to 5 seconds.
First, create a directory for your custom configuration:
sudo mkdir -p /etc/rancher/k3s/agent/pod-runtime-hash/containerd/config.d/
Then, create a TOML file within that directory, for example, 50-idle-timeout.toml:
sudo tee /etc/rancher/k3s/agent/pod-runtime-hash/containerd/config.d/50-idle-timeout.toml > /dev/null <<EOF
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
# Reduce idle timeout for containers to 5 seconds
# Default is 30s. This can speed up container teardown and reduce memory usage for idle containers.
"cpu_period" = "100000"
"cpu_quota" = "100000"
"cpu_shares" = "1024"
"io_priority" = 2
"io_read_bps" = 0
"io_read_iops" = 0
"io_write_bps" = 0
"io_write_iops" = 0
"privileged_without_host_devices" = false
"remove_delegated" = false
"require_root_user_namespace" = false
"runtime" = "/usr/bin/runc"
"runtime_extensions" = []
"shim_debug_logging" = false
"shim_entrypoint" = ""
"systemd_cgroup" = false
"max_concurrent_uploads" = 0
"max_concurrent_downloads" = 0
"max_container_log_line_size" = 16384
"containerd_runtime_endpoint" = ""
"containerd_runtime_root" = ""
"containerd_runtime_uid" = ""
"containerd_runtime_gid" = ""
"containerd_runtime_privileged_gid" = 0
"containerd_runtime_cgroup" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"containerd_runtime_shm_size" = 0
"containerd_runtime_uts_mode" = ""
"containerd_runtime_ipc_mode" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_network_mode" = ""
"containerd_runtime_dns_search_domains" = []
"containerd_runtime_dns_options" = []
"containerd_runtime_dns_nameservers" = []
"containerd_runtime_hostname" = ""
"containerd_runtime_domainname" = ""
"containerd_runtime_extra_hosts" = []
"containerd_runtime_privileged_mode" = false
"containerd_runtime_security_opt" = []
"containerd_runtime_sysctls" = {}
"containerd_runtime_pid_file" = ""
"containerd_runtime_pid_mode" = ""
"containerd_runtime_cgroup_parent" = ""
"containerd_runtime_oom_score_adj" = 0
"containerd_runtime_io_setup" = ""
"containerd_runtime_io_setup_args" = []
"containerd_runtime_uid_map" = ""
"containerd_runtime_gid_map" = ""
"containerd_runtime_root_propagation" = ""
"containerd_runtime_seccomp_profile" = ""
"containerd_runtime_apparmor_profile" = ""
"containerd_runtime_selinux_profile" = ""
"containerd_runtime_capabilities" = []
"containerd_runtime_privileged" = false
"containerd_runtime_user" = ""
"containerd_runtime_working_dir" = ""
"containerd_runtime_env" = []
"containerd_runtime_devices" = []
"containerd_runtime_mounts" = []
"container