func (c *ConfigWriter) PrintSecretSummary() error {
	if c.ztunnelDump == nil {
		return fmt.Errorf("config writer has not been primed")
	}
	secretDump := c.ztunnelDump.Certificates
	w := new(tabwriter.Writer).Init(c.Stdout, 0, 8, 5, ' ', 0)
	fmt.Fprintln(w, "CERTIFICATE NAME\tTYPE\tSTATUS\tVALID CERT\tSERIAL NUMBER\tNOT AFTER\tNOT BEFORE")

	for _, secret := range secretDump {
		if strings.Contains(secret.State, "Unavailable") {

  // bundle, as PEM bundle of PEM-wrapped, DER-formatted X.509 certificates.
  //
  // The data must consist only of PEM certificate blocks that parse as valid
  // X.509 certificates.  Each certificate must include a basic constraints
  // extension with the CA bit set.  The API server will reject objects that
  // contain duplicate certificates, or that use PEM block headers.
  //

For further documentation see https://istio.io website

{{-
  $deps := dict
    "global.outboundTrafficPolicy" "meshConfig.outboundTrafficPolicy"
    "global.certificates" "meshConfig.certificates"
    "global.localityLbSetting" "meshConfig.localityLbSetting"
    "global.policyCheckFailOpen" "meshConfig.policyCheckFailOpen"
    "global.enableTracing" "meshConfig.enableTracing"

	Ports     map[string]int `json:"ports"`
}

type ZtunnelDump struct {
	Workloads    map[string]*ZtunnelWorkload `json:"by_addr"`
	Services     map[string]*ZtunnelService  `json:"by_vip"`
	Certificates []*CertsDump                `json:"certificates"`
}

type CertsDump struct {
	Identity  string  `json:"identity"`
	State     string  `json:"state"`
	CertChain []*Cert `json:"cert_chain"`
}

type Cert struct {

## Certificates

Ztunnel certificates are based on the standard Istio SPIFFE format: `spiffe://<trust domain>/ns/<ns>/sa/<sa>`.

However, the identities of the certificates will be of the actual user workloads, not Ztunnel's own identity.
This means Ztunnel will have multiple distinct certificates at a time, one for each unique identity (service account) running on its node.

contents:
  repositories:
    - https://packages.wolfi.dev/os
  keyring:
    - https://packages.wolfi.dev/os/wolfi-signing.rsa.pub
  packages:
    - ca-certificates-bundle
    - wolfi-baselayout
    - glibc
    - iptables
    - ip6tables
    - libnetfilter_conntrack
    - libnfnetlink
    - libmnl
    - libgcc
archs:
  - x86_64
  - aarch64
paths:
- path: /run
  type: directory
  permissions: 0o755
accounts:

# hadolint ignore=DL3005,DL3008
RUN apt-get update && \
  apt-get install --no-install-recommends -y \
  ca-certificates \
  curl \
  iptables \
  iproute2 \
  iputils-ping \
  knot-dnsutils \
  netcat-openbsd \
  tcpdump \
  conntrack \
  bsdmainutils \
  net-tools \
  lsof \
  sudo \
  && update-ca-certificates \
  && apt-get upgrade -y \
  && apt-get clean \

syntax = "proto2";

package k8s.io.api.certificates.v1beta1;

import "k8s.io/api/core/v1/generated.proto";
import "k8s.io/apimachinery/pkg/apis/meta/v1/generated.proto";
import "k8s.io/apimachinery/pkg/runtime/generated.proto";
import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";

// Package-wide variables from generator "generated".
option go_package = "k8s.io/api/certificates/v1beta1";

                                      certificate authority certificates to use in
                                      verifying a presented server certificate.'
                                    type: string
                                  caCrl:
                                    description: 'OPTIONAL: The path to the file containing
                                      the certificate revocation list (CRL) to use

      # Setting this port to a non-zero value enables STS server.
      servicePort: 0

    # The name of the CA for workload certificates.
    # For example, when caName=GkeWorkloadCertificate, GKE workload certificates
    # will be used as the certificates for workloads.
    # The default value is "" and when caName="", the CA will be configured by other
    # mechanisms (e.g., environmental variable CA_PROVIDER).