3 navsection: installguide
4 title: Install Keep-web server
7 Copyright (C) The Arvados Authors. All rights reserved.
9 SPDX-License-Identifier: CC-BY-SA-3.0
12 The Keep-web server provides read/write HTTP (WebDAV) access to files stored in Keep. It serves public data to unauthenticated clients, and serves private data to clients that supply Arvados API tokens. It can be installed anywhere with access to Keep services, typically behind a web proxy that provides TLS support. See the "godoc page":http://godoc.org/github.com/curoverse/arvados/services/keep-web for more detail.
14 By convention, we use the following hostnames for the Keep-web service:
17 <pre><code>download.<span class="userinput">uuid_prefix</span>.your.domain
18 collections.<span class="userinput">uuid_prefix</span>.your.domain
19 *.collections.<span class="userinput">uuid_prefix</span>.your.domain
23 The above hostnames should resolve from anywhere on the internet.
27 Typically Keep-web runs on the same host as Keepproxy.
29 On Debian-based systems:
32 <pre><code>~$ <span class="userinput">sudo apt-get install keep-web</span>
36 On Red Hat-based systems:
39 <pre><code>~$ <span class="userinput">sudo yum install keep-web</span>
43 Verify that @Keep-web@ is functional:
46 <pre><code>~$ <span class="userinput">keep-web -h</span>
49 Site configuration file (default may be overridden by setting an ARVADOS_CONFIG environment variable) (default "/etc/arvados/config.yml")
51 write current configuration to stdout and exit
54 print version information and exit.
58 h3. Set up a reverse proxy with TLS support
60 The Keep-web service will be accessible from anywhere on the internet, so we recommend using TLS for transport encryption.
62 This is best achieved by putting a reverse proxy with TLS support in front of Keep-web, running on port 443 and passing requests to Keep-web on port 9002 (or whatever port you chose in your run script).
64 Note: A wildcard TLS certificate is required in order to support a full-featured secure Keep-web service. Without it, Keep-web can offer file downloads for all Keep data; however, in order to avoid cross-site scripting vulnerabilities, Keep-web refuses to serve private data as web content except when it is accessed using a "secret link" share. With a wildcard TLS certificate and DNS configured appropriately, all data can be served as web content.
66 For example, using Nginx:
70 server 127.0.0.1:<span class="userinput">9002</span>;
74 listen <span class="userinput">[your public IP address]</span>:443 ssl;
75 server_name download.<span class="userinput">uuid_prefix</span>.your.domain
76 collections.<span class="userinput">uuid_prefix</span>.your.domain
77 *.collections.<span class="userinput">uuid_prefix</span>.your.domain
78 ~.*--collections.<span class="userinput">uuid_prefix</span>.your.domain;
80 proxy_connect_timeout 90s;
81 proxy_read_timeout 300s;
84 ssl_certificate <span class="userinput"/>YOUR/PATH/TO/cert.pem</span>;
85 ssl_certificate_key <span class="userinput"/>YOUR/PATH/TO/cert.key</span>;
88 proxy_pass http://keep-web;
89 proxy_set_header Host $host;
90 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
92 client_max_body_size 0;
93 proxy_http_version 1.1;
94 proxy_request_buffering off;
99 {% include 'notebox_begin' %}
100 If you restrict access to your Arvados services based on network topology -- for example, your proxy server is not reachable from the public internet -- additional proxy configuration might be needed to thwart cross-site scripting attacks that would circumvent your restrictions. Read the "'Intranet mode' section of the Keep-web documentation":https://godoc.org/github.com/curoverse/arvados/services/keep-web#hdr-Intranet_mode now.
101 {% include 'notebox_end' %}
103 h3(#dns). Configure DNS
105 Configure your DNS servers so the following names resolve to your Nginx proxy's public IP address.
106 * @download.uuid_prefix.your.domain@
107 * @collections.uuid_prefix.your.domain@
108 * @*--collections.uuid_prefix.your.domain@, if you have a wildcard TLS certificate valid for @*.uuid_prefix.your.domain@ and your DNS server allows this without interfering with other DNS names.
109 * @*.collections.uuid_prefix.your.domain@, if you have a wildcard TLS certificate valid for these names.
111 If neither of the above wildcard options is feasible, you have two choices:
112 # Serve web content at @collections.uuid_prefix.your.domain@, but only for unauthenticated requests (public data and collection sharing links). Authenticated requests will always result in file downloads, using the @download@ name. For example, the Workbench "preview" button and the "view entire log file" link will invoke file downloads instead of displaying content in the browser window.
113 # In the special case where you know you are immune to XSS exploits, you can enable the "trust all content" mode in Keep-web and Workbench (setting @Collections.TrustAllContent: true@ on the config file). With this enabled, inline web content can be served from a single @collections@ host name; no wildcard DNS or certificate is needed. Do not do this without understanding the security implications described in the "Keep-web documentation":http://godoc.org/github.com/curoverse/arvados/services/keep-web.
115 h2. Configure Keep-web
117 {% assign railscmd = "bundle exec ./script/get_anonymous_user_token.rb --get" %}
118 {% assign railsout = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz" %}
119 If you intend to use Keep-web to serve public data to anonymous clients, configure it with an anonymous token. You can use the same one you used when you set up your Keepproxy server, or use the following command on the <strong>API server</strong> to create another. {% include 'install_rails_command' %}
121 Set the cluster config file like the following:
125 <span class="userinput">uuid_prefix</span>:
128 ExternalURL: "https://<span class="userinput">uuid_prefix</span>.your.domain"
131 "http://keep_web_hostname_goes_here:9002/": {}
132 ExternalURL: "https://collections.<span class="userinput">uuid_prefix</span>.your.domain"
135 "http://keep_web_hostname_goes_here:9002/": {}
136 ExternalURL: "https://download.<span class="userinput">uuid_prefix</span>.your.domain"
138 AnonymousUserToken: "{{railsout}}"
140 TrustAllContent: false
146 Set @Users.AnonymousUserToken: ""@ (empty string) if you do not want to serve public data.
148 Set @TLS.Insecure: true@ if your API server's TLS certificate is not signed by a recognized CA.
150 Workbench has features like "download file from collection" and "show image" which work better if the content is served by Keep-web rather than Workbench itself. We recommend using the two different hostnames ("download" and "collections" above) for file downloads and inline content respectively.
152 The following entry on your cluster configuration file (@/etc/arvados/config.yml@) details the URL that will be used for file downloads.
156 <span class="userinput">uuid_prefix</span>:
159 ExternalURL: "https://download.<span class="userinput">uuid_prefix</span>.your.domain"
163 Additionally, one of the following entries on your cluster configuration file (depending on your DNS setup) tells Workbench which URL will be used to serve user content that can be displayed in the browser, like image previews and static HTML pages.
167 <span class="userinput">uuid_prefix</span>:
170 ExternalURL: "https://*--collections.<span class="userinput">uuid_prefix</span>.your.domain"
171 ExternalURL: "https://*.collections.<span class="userinput">uuid_prefix</span>.your.domain"
172 ExternalURL: "https://collections.<span class="userinput">uuid_prefix</span>.your.domain"
178 h3. Start the service (option 1: systemd)
180 If your system does not use systemd, skip this section and follow the "runit instructions":#runit instead.
182 If your system uses systemd, the keep-web service should already be set up. Start it and check its status:
185 <pre><code>~$ <span class="userinput">sudo systemctl restart keep-web</span>
186 ~$ <span class="userinput">sudo systemctl status keep-web</span>
187 ● keep-web.service - Arvados Keep web gateway
188 Loaded: loaded (/lib/systemd/system/keep-web.service; enabled)
189 Active: active (running) since Sat 2019-08-10 10:33:21 UTC; 3 days ago
190 Docs: https://doc.arvados.org/
191 Main PID: 4242 (keep-web)
192 CGroup: /system.slice/keep-web.service
193 └─4242 /usr/bin/keep-web
198 h3(#runit). Start the service (option 2: runit)
200 Install runit to supervise the Keep-web daemon. {% include 'install_runit' %}
202 The basic command to start Keep-web in the service run script is:
205 <pre><code>exec keep-web