local-server/ui/js/Cluster.js

const Cluster = {
    components: { Downloads, GetCopy },
    props: [ 'cluster', 'token', 'state' ],
    data() {
        return {
            signReqValidity: "1d",
            sshSignReq: {
                PubKey: "",
                Principal: "root",
            },
            sshUserCert: null,
            kubeSignReq: {
                CSR: "",
                User:   "",
                Group:  "system:masters",
            },
            kubeUserCert: null,
            downloadSet: null,
        };
    },
    methods: {
        sshCASign() {
            event.preventDefault();
            fetch(`/clusters/${this.cluster.Name}/ssh/user-ca/sign`, {
                method: 'POST',
                body: JSON.stringify({ ...this.sshSignReq, Validity: this.signReqValidity }),
                headers: { 'Authorization': 'Bearer ' + this.token, 'Content-Type': 'application/json' },
            }).then((resp) => {
                if (resp.ok) {
                    resp.blob().then((cert) => { this.sshUserCert = URL.createObjectURL(cert) })
                } else {
                    resp.json().then((resp) => alert('failed to sign: '+resp.message))
                }
              })
              .catch((e) => { alert('failed to sign: '+e); })
        },
        kubeCASign() {
            event.preventDefault();
            fetch(`/clusters/${this.cluster.Name}/kube/sign`, {
                method: 'POST',
                body: JSON.stringify({ ...this.kubeSignReq, Validity: this.signReqValidity }),
                headers: { 'Authorization': 'Bearer ' + this.token, 'Content-Type': 'application/json' },
            }).then((resp) => {
                if (resp.ok) {
                    resp.blob().then((cert) => { this.kubeUserCert = URL.createObjectURL(cert) })
                } else {
                    resp.json().then((resp) => alert('failed to sign: '+resp.message))
                }
              })
              .catch((e) => { alert('failed to sign: '+e); })
        },
        readFile(e, onload) {
            const file = e.target.files[0];
            if (!file) { return; }
            const reader = new FileReader();
            reader.onload = () => { onload(reader.result) };
            reader.onerror = () => { alert("error reading file"); };
            reader.readAsText(file);
        },
        loadPubKey(e) {
            this.readFile(e, (v) => {
                this.sshSignReq.PubKey = v;
            });
        },
        loadCSR(e) {
            this.readFile(e, (v) => {
                this.kubeSignReq.CSR = v;
            });
        },
        generateDownloadSet() {
            event.preventDefault()

            const hosts = (this.state.Hosts||[]).filter(h => h.Cluster == this.cluster.Name)
            const items = hosts.map(h => ({
                Kind: "host",
                Name: h.Name,
                Assets: ["kernel", "initrd", "uki", "bootstrap.tar", "boot.img.gz", "boot.img", "boot.qcow2", "boot.iso", "boot.tar", "bootstrap-config", "config", "config.json", "ipxe"],
            }))

            fetch('/sign-download-set', {
                method: 'POST',
                body: JSON.stringify({Expiry: this.signReqValidity, Items: items}),
                headers: { 'Authorization': 'Bearer ' + this.token, 'Content-Type': 'application/json' },
            }).then((resp) => {
                if (resp.ok) {
                    resp.json().then((set) => { this.downloadSet = set })
                } else {
                    resp.json().then((resp) => alert('failed to generate: '+resp.message))
                }
            }).catch((e) => { alert('failed to generate: '+e) })
        },
    },
    template: `
  <h3>Access</h3>

  <p>Allow cluster access from a public key</p>

  <h4>Grant SSH access</h4>

  <p>Validity: <input type="text" v-model="signReqValidity"/> <small>time range, ie: -5m:1w, 5m, 1M, 1y, 1d-1s, etc.</small></p>
  <p>User: <input type="text" v-model="sshSignReq.Principal"/></p>
  <p>Public key (OpenSSH format):<br/>
     <span class="text-and-file"><textarea v-model="sshSignReq.PubKey" style="height:3lh"></textarea>
     <input type="file" accept=".pub" @change="loadPubKey" /></span>
  </p>

  <p><button @click="sshCASign">Sign SSH access</button>
    <template v-if="sshUserCert">
    =&gt; <a :href="sshUserCert" download="ssh-cert.pub">Get certificate</a>
    </template>
  </p>

  <h4>Grant Kubernetes API access</h4>

  <p>Validity: <input type="text" v-model="signReqValidity"/> <small>time range, ie: -5m:1w, 5m, 1M, 1y, 1d-1s, etc.</small></p>
  <p>User: <input type="text" v-model="kubeSignReq.User"/> (by default, from the CSR)</p>
  <p>Group: <input type="text" v-model="kubeSignReq.Group"/></p>
  <p>Certificate signing request (PEM format):<br/>
     <span class="text-and-file"><textarea v-model="kubeSignReq.CSR" style="height:7lh;"></textarea>
     <input type="file" accept=".csr" @change="loadCSR" /></span>
  </p>

  <p><button @click="kubeCASign">Sign Kubernetes API access</button>
    <template v-if="kubeUserCert">
      =&gt; <a :href="kubeUserCert" download="kube-cert.pub">Get certificate</a>
    </template>
  </p>

  <h3>Tokens</h3>
  <section class="links">
    <GetCopy v-for="n in cluster.Tokens" :token="token" :name="n" :href="'/clusters/'+cluster.Name+'/tokens/'+n" />
  </section>

  <h3>Passwords</h3>
  <section class="links">
    <GetCopy v-for="n in cluster.Passwords" :token="token" :name="n" :href="'/clusters/'+cluster.Name+'/passwords/'+n" />
  </section>

  <h3>Downloads</h3>
  <Downloads :token="token" :state="state" kind="cluster" :name="cluster.Name" />

  <h3>Download set</h3>
  <p>Validity: <input type="text" v-model="signReqValidity"/> <small>time range, ie: -5m:1w, 5m, 1M, 1y, 1d-1s, etc.</small></p>
  <p><button @click="generateDownloadSet">Generate download set ({{ (state.Hosts||[]).filter(h => h.Cluster == cluster.Name).length }} hosts)</button></p>
  <p v-if="downloadSet" style="word-break:break-all">
    <a :href="'/public/download-set?set='+downloadSet" target="_blank">Open download set page</a>
    <br/>
    <button @click="navigator.clipboard.writeText(window.location.origin+'/public/download-set?set='+downloadSet)">Copy URL</button>
  </p>

  <h3>CAs</h3>
  <table><tr><th>Name</th><th>Certificate</th><th>Signed certificates</th></tr>
  <tr v-for="ca in cluster.CAs">
    <td>{{ ca.Name }}</td>
    <td><GetCopy :token="token" name="cert" :href="'/clusters/'+cluster.Name+'/CAs/'+ca.Name+'/certificate'" /></td>
    <td><template v-for="signed in ca.Signed">
      {{" "}}
      <GetCopy :token="token" :name="signed" :href="'/clusters/'+cluster.Name+'/CAs/'+ca.Name+'/signed?name='+signed" />
    </template></td>
  </tr></table>

`
}