3 navsection: installguide
4 title: Install API server and Controller
7 Copyright (C) The Arvados Authors. All rights reserved.
9 SPDX-License-Identifier: CC-BY-SA-3.0
12 # "Introduction":#introduction
13 # "Install dependencies":#dependencies
14 # "Set up database":#database-setup
15 # "Update config.yml":#update-config
16 # "Update nginx configuration":#update-nginx
17 # "Install arvados-api-server and arvados-controller":#install-packages
18 # "Confirm working installation":#confirm-working
20 h2(#introduction). Introduction
22 The Arvados core API server consists of four services: PostgreSQL, Arvados Rails API, Arvados Controller, and Nginx.
24 Here is a simplified diagram showing the relationship between the core services. Client requests arrive at the public-facing Nginx reverse proxy. The request is forwarded to Arvados controller. The controller is able handle some requests itself, the rest are forwarded to the Arvados Rails API. The Rails API server implements the majority of business logic, communicating with the PostgreSQL database to fetch data and make transactional updates. All services are stateless, except the PostgreSQL database. This guide assumes all of these services will be installed on the same node, but it is possible to install these services across multiple nodes.
26 !(full-width){{site.baseurl}}/images/proxy-chain.svg!
28 h2(#dependencies). Install dependencies
30 # "Install PostgreSQL":install-postgresql.html
31 # "Install Ruby and Bundler":ruby.html
32 # "Install nginx":nginx.html
33 # "Install Phusion Passenger":https://www.phusionpassenger.com/docs/tutorials/deploy_to_production/installations/oss/ownserver/ruby/nginx/
35 h2(#database-setup). Set up database
37 {% assign service_role = "arvados" %}
38 {% assign service_database = "arvados_production" %}
39 {% assign use_contrib = true %}
40 {% include 'install_postgres_database' %}
42 h2(#update-config). Update config.yml
44 Starting from an "empty config.yml file,":config.html#empty add the following configuration keys.
49 <pre><code> SystemRootToken: <span class="userinput">"$system_root_token"</span>
50 ManagementToken: <span class="userinput">"$management_token"</span>
52 BlobSigningKey: <span class="userinput">"$blob_signing_key"</span>
56 These secret tokens are used to authenticate messages between Arvados components.
57 * @SystemRootToken@ is used by Arvados system services to authenticate as the system (root) user when communicating with the API server.
58 * @ManagementToken@ is used to authenticate access to system metrics.
59 * @Collections.BlobSigningKey@ is used to control access to Keep blocks.
61 Each token should be a string of at least 50 alphanumeric characters. You can generate a suitable token with the following command:
64 <pre><code>~$ <span class="userinput">tr -dc 0-9a-zA-Z </dev/urandom | head -c50 ; echo</span>
68 h3. PostgreSQL.Connection
71 <pre><code> PostgreSQL:
73 host: <span class="userinput">localhost</span>
74 user: <span class="userinput">arvados</span>
75 password: <span class="userinput">$postgres_password</span>
76 dbname: <span class="userinput">arvados_production</span>
80 Replace the @$postgres_password@ placeholder with the password you generated during "database setup":#database-setup .
87 ExternalURL: <span class="userinput">"https://ClusterID.example.com"</span>
89 <span class="userinput">"http://localhost:8003": {}</span>
91 # Does not have an ExternalURL
93 <span class="userinput">"http://localhost:8004": {}</span>
97 Replace @ClusterID.example.com@ with the hostname that you previously selected for the API server.
99 The @Services@ section of the configuration helps Arvados components contact one another (service discovery). Each service has one or more @InternalURLs@ and an @ExternalURL@. The @InternalURLs@ describe where the service runs, and how the Nginx reverse proxy will connect to it. The @ExternalURL@ is how external clients contact the service.
101 h2(#update-nginx). Update nginx configuration
103 Use a text editor to create a new file @/etc/nginx/conf.d/arvados-api-and-controller.conf@ with the following configuration. Options that need attention are marked in <span class="userinput">red</span>.
106 <pre><code>proxy_http_version 1.1;
108 # When Keep clients request a list of Keep services from the API
109 # server, use the origin IP address to determine if the request came
110 # from the internal subnet or it is an external client. This sets the
111 # $external_client variable which in turn is used to set the
112 # X-External-Client header.
114 # The API server uses this header to choose whether to respond to a
115 # "available keep services" request with either a list of internal keep
116 # servers (0) or with the keepproxy (1).
118 # <span class="userinput">Following the example here, update the 10.20.30.0/24 netmask</span>
119 # <span class="userinput">to match your private subnet.</span>
120 # <span class="userinput">Update 1.2.3.4 and add lines as necessary with the public IP</span>
121 # <span class="userinput">address of all servers that can also access the private network to</span>
122 # <span class="userinput">ensure they are not considered 'external'.</span>
124 geo $external_client {
127 <span class="userinput">10.20.30.0/24</span> 0;
128 <span class="userinput">1.2.3.4/32</span> 0;
131 # This is the port where nginx expects to contact arvados-controller.
132 upstream controller {
133 server localhost:8003 fail_timeout=10s;
137 # This configures the public https port that clients will actually connect to,
138 # the request is reverse proxied to the upstream 'controller'
141 server_name <span class="userinput">ClusterID.example.com</span>;
143 ssl_certificate <span class="userinput">/YOUR/PATH/TO/cert.pem</span>;
144 ssl_certificate_key <span class="userinput">/YOUR/PATH/TO/cert.key</span>;
146 # Refer to the comment about this setting in the passenger (arvados
147 # api server) section of your Nginx configuration.
148 client_max_body_size 128m;
151 proxy_pass http://controller;
153 proxy_connect_timeout 90s;
154 proxy_read_timeout 300s;
155 proxy_max_temp_file_size 0;
156 proxy_request_buffering off;
158 proxy_http_version 1.1;
160 proxy_set_header Host $http_host;
161 proxy_set_header Upgrade $http_upgrade;
162 proxy_set_header Connection "upgrade";
163 proxy_set_header X-External-Client $external_client;
164 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
165 proxy_set_header X-Forwarded-Proto https;
166 proxy_set_header X-Real-IP $remote_addr;
171 # This configures the Arvados API server. It is written using Ruby
172 # on Rails and uses the Passenger application server.
174 listen <span class="userinput">localhost:8004</span>;
175 server_name localhost-api;
177 root /var/www/arvados-api/current/public;
178 index index.html index.htm index.php;
180 passenger_enabled on;
181 passenger_preload_bundler on;
182 passenger_load_shell_envvars off;
183 # The API server needs to find `arvados-server` in $PATH to read the cluster
184 # configuration. If you have installed `arvados-server` in a nonstandard
185 # location, add that directory to the PATH value here.
186 passenger_env_var PATH /usr/bin:/usr/local/bin;
188 # This value effectively limits the size of API objects users can
189 # create, especially collections. If you change this, you should
190 # also ensure the following settings match it:
191 # * `client_max_body_size` in the previous server section
192 # * `API.MaxRequestSize` in config.yml
193 client_max_body_size 128m;
198 {% assign arvados_component = 'arvados-api-server arvados-controller' %}
200 {% include 'install_packages' %}
202 {% assign arvados_component = 'arvados-controller' %}
204 {% include 'start_service' %}
206 h2(#confirm-working). Confirm working installation
208 We recommend using the "Cluster diagnostics tool.":diagnostics.html The first few tests (10, 20, 30) will succeed if you have a working API server and controller. Of course, tests for services that you have not yet installed and configured will fail.
210 Here are some other checks you can perform manually.
212 h3. Confirm working controller
214 <notextile><pre><code>$ curl https://<span class="userinput">ClusterID.example.com</span>/arvados/v1/config
215 </code></pre></notextile>
217 h3. Confirm working Rails API server
219 <notextile><pre><code>$ curl https://<span class="userinput">ClusterID.example.com</span>/discovery/v1/apis/arvados/v1/rest
220 </code></pre></notextile>
222 h3. Confirm that you can use the system root token to act as the system root user
224 <notextile><pre><code>$ curl -H "Authorization: Bearer $system_root_token" https://<span class="userinput">ClusterID.example.com</span>/arvados/v1/users/current
225 </code></pre></notextile>
229 If you are getting TLS errors, make sure the @ssl_certificate@ directive in your nginx configuration has the "full certificate chain":http://nginx.org/en/docs/http/configuring_https_servers.html#chains
231 Logs can be found in @/var/www/arvados-api/current/log/production.log@ and using @journalctl -u arvados-controller@.
233 See also the admin page on "Logging":{{site.baseurl}}/admin/logging.html .