3 navsection: installguide
4 title: Install the cloud dispatcher
7 Copyright (C) The Arvados Authors. All rights reserved.
9 SPDX-License-Identifier: CC-BY-SA-3.0
12 {% include 'notebox_begin_warning' %}
13 @arvados-dispatch-cloud@ is only relevant for cloud installations. Skip this section if you are installing an on premises cluster that will spool jobs to Slurm or LSF.
14 {% include 'notebox_end' %}
16 # "Introduction":#introduction
17 # "Create compute node VM image":#create-image
18 # "Update config.yml":#update-config
19 # "Install arvados-dispatch-cloud":#install-packages
20 # "Start the service":#start-service
21 # "Restart the API server and controller":#restart-api
22 # "Confirm working installation":#confirm-working
24 h2(#introduction). Introduction
26 The cloud dispatch service is for running containers on cloud VMs. It works with Microsoft Azure and Amazon EC2; future versions will also support Google Compute Engine.
28 The cloud dispatch service can run on any node that can connect to the Arvados API service, the cloud provider's API, and the SSH service on cloud VMs. It is not resource-intensive, so you can run it on the API server node.
30 More detail about the internal operation of the dispatcher can be found in the "architecture section":{{site.baseurl}}/architecture/dispatchcloud.html.
32 h2(#update-config). Update config.yml
34 h3. Configure CloudVMs
36 Add or update the following portions of your cluster configuration file, @config.yml@. Refer to "config.defaults.yml":{{site.baseurl}}/admin/config.html for information about additional configuration options. The @DispatchPrivateKey@ should be the *private* key generated in "the previous section":install-compute-node.html#sshkeypair.
42 "http://localhost:9006": {}
45 # BootProbeCommand is a shell command that succeeds when an instance is ready for service
46 BootProbeCommand: "sudo systemctl status docker"
48 <b># --- driver-specific configuration goes here --- see Amazon and Azure examples below ---</b>
51 -----BEGIN RSA PRIVATE KEY-----
52 MIIEpQIBAAKCAQEAqXoCzcOBkFQ7w4dvXf9B++1ctgZRqEbgRYL3SstuMV4oawks
53 ttUuxJycDdsPmeYcHsKo8vsEZpN6iYsX6ZZzhkO5nEayUTU8sBjmg1ZCTo4QqKXr
54 FJ+amZ7oYMDof6QEdwl6KNDfIddL+NfBCLQTVInOAaNss7GRrxLTuTV7HcRaIUUI
55 jYg0Ibg8ZZTzQxCvFXXnjseTgmOcTv7CuuGdt91OVdoq8czG/w8TwOhymEb7mQlt
56 lXuucwQvYgfoUgcnTgpJr7j+hafp75g2wlPozp8gJ6WQ2yBWcfqL2aw7m7Ll88Nd
58 oFyAjVoexx0RBcH6BveTfQtJKbktP1qBO4mXo2dP0cacuZEtlAqW9Eb06Pvaw/D9
59 foktmqOY8MyctzFgXBpGTxPliGjqo8OkrOyQP2g+FL7v+Km31Xs61P8=
60 -----END RSA PRIVATE KEY-----
63 ProviderType: x1.medium
69 ProviderType: x1.large
72 IncludedScratch: 128GB
77 h4. Minimal configuration example for Amazon EC2
79 The <span class="userinput">ImageID</span> value is the compute node image that was built in "the previous section":install-compute-node.html#aws.
82 <pre><code> Containers:
84 ImageID: <span class="userinput">ami-01234567890abcdef</span>
87 # If you are not using an IAM role for authentication, specify access
88 # credentials here. Otherwise, omit or set AccessKeyID and
89 # SecretAccessKey to an empty value.
90 AccessKeyID: XXXXXXXXXXXXXXXXXXXX
91 SecretAccessKey: YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
95 SubnetID: subnet-0123abcd
98 AdminUsername: arvados
102 h4. Minimal configuration example for Azure
106 The <span class="userinput">ImageID</span> value is the compute node image that was built in "the previous section":install-compute-node.html#azure.
109 <pre><code> Containers:
111 ImageID: <span class="userinput">"zzzzz-compute-v1597349873"</span>
113 # (azure) managed disks: set MaxConcurrentInstanceCreateOps to 20 to avoid timeouts, cf
114 # https://docs.microsoft.com/en-us/azure/virtual-machines/linux/capture-image
115 MaxConcurrentInstanceCreateOps: 20
118 SubscriptionID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
119 ClientID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
120 ClientSecret: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
121 TenantID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
123 # Data center where VMs will be allocated
126 # The resource group where the VM and virtual NIC will be
129 NetworkResourceGroup: yyyyy # only if different from ResourceGroup
131 Subnet: xxxxx-subnet-private
133 # The resource group where the disk image is stored, only needs to
134 # be specified if it is different from ResourceGroup
135 ImageResourceGroup: aaaaa
140 Azure recommends using managed images. If you plan to start more than 20 VMs simultaneously, Azure recommends using a shared image gallery instead to avoid slowdowns and timeouts during the creation of the VMs.
142 Using an image from a shared image gallery:
145 <pre><code> Containers:
147 ImageID: <span class="userinput">"shared_image_gallery_image_definition_name"</span>
151 SubscriptionID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
152 ClientID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
153 ClientSecret: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
154 TenantID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
156 # Data center where VMs will be allocated
159 # The resource group where the VM and virtual NIC will be
162 NetworkResourceGroup: yyyyy # only if different from ResourceGroup
164 Subnet: xxxxx-subnet-private
166 # The resource group where the disk image is stored, only needs to
167 # be specified if it is different from ResourceGroup
168 ImageResourceGroup: aaaaa
170 # (azure) shared image gallery: the name of the gallery
171 SharedImageGalleryName: "shared_image_gallery_1"
172 # (azure) shared image gallery: the version of the image definition
173 SharedImageGalleryImageVersion: "0.0.1"
178 Using unmanaged disks (deprecated):
180 The <span class="userinput">ImageID</span> value is the compute node image that was built in "the previous section":install-compute-node.html#azure.
183 <pre><code> Containers:
185 ImageID: <span class="userinput">"https://zzzzzzzz.blob.core.windows.net/system/Microsoft.Compute/Images/images/zzzzz-compute-osDisk.55555555-5555-5555-5555-555555555555.vhd"</span>
189 SubscriptionID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
190 ClientID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
191 ClientSecret: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
192 TenantID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
194 # Data center where VMs will be allocated
197 # The resource group where the VM and virtual NIC will be
200 NetworkResourceGroup: yyyyy # only if different from ResourceGroup
202 Subnet: xxxxx-subnet-private
204 # Where to store the VM VHD blobs
205 StorageAccount: example
211 Get the @SubscriptionID@ and @TenantID@:
217 "cloudName": "AzureCloud",
218 "id": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXX",
220 "name": "Your Subscription",
222 "tenantId": "YYYYYYYY-YYYY-YYYY-YYYYYYYY",
224 "name": "you@example.com",
231 You will need to create a "service principal" to use as a delegated authority for API access.
233 <notextile><pre><code>$ az ad app create --display-name "Arvados Dispatch Cloud (<span class="userinput">ClusterID</span>)" --homepage "https://arvados.org" --identifier-uris "https://<span class="userinput">ClusterID.example.com</span>" --end-date 2299-12-31 --password <span class="userinput">Your_Password</span>
234 $ az ad sp create "<span class="userinput">appId</span>"
235 (appId is part of the response of the previous command)
236 $ az role assignment create --assignee "<span class="userinput">objectId</span>" --role Owner --scope /subscriptions/{subscriptionId}/
237 (objectId is part of the response of the previous command)
238 </code></pre></notextile>
240 Now update your @config.yml@ file:
242 @ClientID@ is the 'appId' value.
244 @ClientSecret@ is what was provided as <span class="userinput">Your_Password</span>.
246 h3. Test your configuration
248 Run the @cloudtest@ tool to verify that your configuration works. This creates a new cloud VM, confirms that it boots correctly and accepts your configured SSH private key, and shuts it down.
251 <pre><code>~$ <span class="userinput">arvados-server cloudtest && echo "OK!"</span>
255 Refer to the "cloudtest tool documentation":../../admin/cloudtest.html for more information.
257 {% assign arvados_component = 'arvados-dispatch-cloud' %}
259 {% include 'install_packages' %}
261 {% include 'start_service' %}
263 {% include 'restart_api' %}
265 h2(#confirm-working). Confirm working installation
267 On the dispatch node, start monitoring the arvados-dispatch-cloud logs:
270 <pre><code>~$ <span class="userinput">sudo journalctl -o cat -fu arvados-dispatch-cloud.service</span>
274 "Make sure to install the arvados/jobs image.":../install-jobs-image.html
276 Submit a simple container request:
279 <pre><code>shell:~$ <span class="userinput">arv container_request create --container-request '{
281 "state": "Committed",
283 "container_image": "arvados/jobs:latest",
284 "command": ["echo", "Hello, Crunch!"],
285 "output_path": "/out",
292 "runtime_constraints": {
300 This command should return a record with a @container_uuid@ field. Once @arvados-dispatch-cloud@ polls the API server for new containers to run, you should see it dispatch that same container.
302 The @arvados-dispatch-cloud@ API provides a list of queued and running jobs and cloud instances. Use your @ManagementToken@ to test the dispatcher's endpoint. For example, when one container is running:
305 <pre><code>~$ <span class="userinput">curl -sH "Authorization: Bearer $token" http://localhost:9006/arvados/v1/dispatch/containers</span>
310 "uuid": "zzzzz-dz642-hdp2vpu9nq14tx0",
313 "scheduling_parameters": {
315 "preemptible": false,
319 "runtime_status": null,
324 "Name": "Standard_D2s_v3",
325 "ProviderType": "Standard_D2s_v3",
328 "Scratch": 16000000000,
329 "IncludedScratch": 16000000000,
340 A similar request can be made to the @http://localhost:9006/arvados/v1/dispatch/instances@ endpoint.
342 When the container finishes, the dispatcher will log it.
344 After the container finishes, you can get the container record by UUID *from a shell server* to see its results:
347 <pre><code>shell:~$ <span class="userinput">arv get <b>zzzzz-dz642-hdp2vpu9nq14tx0</b></span>
351 "log":"a01df2f7e5bc1c2ad59c60a837e90dc6+166",
352 "output":"d41d8cd98f00b204e9800998ecf8427e+0",
359 You can use standard Keep tools to view the container's output and logs from their corresponding fields. For example, to see the logs from the collection referenced in the @log@ field:
362 <pre><code>~$ <span class="userinput">arv keep ls <b>a01df2f7e5bc1c2ad59c60a837e90dc6+166</b></span>
366 ~$ <span class="userinput">arv-get <b>a01df2f7e5bc1c2ad59c60a837e90dc6+166</b>/stdout.txt</span>
367 2016-08-05T13:53:06.201011Z Hello, Crunch!
371 If the container does not dispatch successfully, refer to the @arvados-dispatch-cloud@ logs for information about why it failed.