---
layout: default
navsection: installguide
-title: Install the keep-web server
+title: Install Keep-web server
...
+{% comment %}
+Copyright (C) The Arvados Authors. All rights reserved.
-The keep-web server provides read-only HTTP 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 SSL support. See the "godoc page":http://godoc.org/github.com/curoverse/arvados/services/keep-web for more detail.
+SPDX-License-Identifier: CC-BY-SA-3.0
+{% endcomment %}
-By convention, we use the following hostname for the keep-web service:
+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/arvados/arvados/services/keep-web for more detail.
+
+By convention, we use the following hostnames for the Keep-web service:
<notextile>
-<pre><code>collections.<span class="userinput">uuid_prefix</span>.your.domain
+<pre><code>download.<span class="userinput">uuid_prefix</span>.your.domain
+collections.<span class="userinput">uuid_prefix</span>.your.domain
+*.collections.<span class="userinput">uuid_prefix</span>.your.domain
</code></pre>
</notextile>
-This hostname should resolve from anywhere on the internet.
+The above hostnames should resolve from anywhere on the internet.
+
+h2. Install Keep-web
-h2. Install keep-web
+Typically Keep-web runs on the same host as Keepproxy.
On Debian-based systems:
</code></pre>
</notextile>
-Verify that @keep-web@ is functional:
+Verify that @Keep-web@ is functional:
<notextile>
<pre><code>~$ <span class="userinput">keep-web -h</span>
Usage of keep-web:
- -address string
- Address to listen on: "host:port", or ":port" to listen on all interfaces. (default ":80")
- -anonymous-token value
- API token to try when none of the tokens provided in an HTTP request succeed in reading the desired collection. If this flag is used more than once, each token will be attempted in turn until one works. (default [])
- -attachment-only-host string
- Accept credentials, and add "Content-Disposition: attachment" response headers, for requests at this hostname:port. Prohibiting inline display makes it possible to serve untrusted and non-public content from a single origin, i.e., without wildcard DNS or SSL.
- -trust-all-content
- Serve non-public content from a single origin. Dangerous: read docs before using!
-</code></pre>
-</notextile>
-
-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:
-
-<notextile>
-<pre><code>/var/www/arvados-api/current/script$ <span class="userinput">RAILS_ENV=production bundle exec ./get_anonymous_user_token.rb</span>
-hoShoomoo2bai3Ju1xahg6aeng1siquuaZ1yae2gi2Uhaeng2r
-</code></pre></notextile>
-
-We recommend running @keep-web@ under "runit":https://packages.debian.org/search?keywords=runit or a similar supervisor. The basic command to start @keep-web@ is:
-
-<notextile>
-<pre><code>export ARVADOS_API_HOST=<span class="userinput">uuid_prefix</span>.your.domain
-exec sudo -u nobody keep-web -address=<span class="userinput">:9002</span> -anonymous-token=<span class="userinput">hoShoomoo2bai3Ju1xahg6aeng1siquuaZ1yae2gi2Uhaeng2r</span> 2>&1
+ -config file
+ Site configuration file (default may be overridden by setting an ARVADOS_CONFIG environment variable) (default "/etc/arvados/config.yml")
+ -dump-config
+ write current configuration to stdout and exit
+[...]
+ -version
+ print version information and exit.
</code></pre>
</notextile>
-Omit the @-anonymous-token@ arguments if you do not want to serve public data.
-
-Set @ARVADOS_API_HOST_INSECURE=1@ if your API server's SSL certificate is not signed by a recognized CA.
-
-h3. Set up a reverse proxy with SSL support
+h3. Set up a reverse proxy with TLS support
-The keep-web service will be accessible from anywhere on the internet, so we recommend using SSL for transport encryption.
+The Keep-web service will be accessible from anywhere on the internet, so we recommend using TLS for transport encryption.
-This is best achieved by putting a reverse proxy with SSL 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).
+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).
-Note: A wildcard SSL certificate is required in order to proxy keep-web effectively.
+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.
For example, using Nginx:
server {
listen <span class="userinput">[your public IP address]</span>:443 ssl;
- server_name collections.<span class="userinput">uuid_prefix</span>.your.domain *.collections.<span class="userinput">uuid_prefix</span>.your.domain ~.*--collections.<span class="userinput">uuid_prefix</span>.your.domain;
+ server_name download.<span class="userinput">uuid_prefix</span>.your.domain
+ collections.<span class="userinput">uuid_prefix</span>.your.domain
+ *.collections.<span class="userinput">uuid_prefix</span>.your.domain
+ ~.*--collections.<span class="userinput">uuid_prefix</span>.your.domain;
proxy_connect_timeout 90s;
proxy_read_timeout 300s;
proxy_pass http://keep-web;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+ client_max_body_size 0;
+ proxy_http_version 1.1;
+ proxy_request_buffering off;
}
}
</pre></notextile>
-h3. Configure DNS
+{% include 'notebox_begin' %}
+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/arvados/arvados/services/keep-web#hdr-Intranet_mode now.
+{% include 'notebox_end' %}
+
+h3(#dns). Configure DNS
Configure your DNS servers so the following names resolve to your Nginx proxy's public IP address.
-* @*--collections.uuid_prefix.your.domain@, if your DNS server allows this without interfering with other DNS names; or
-* @*.collections.uuid_prefix.your.domain@, if you have a wildcard SSL certificate valid for these names; or
-* @collections.uuid_prefix.your.domain@, if neither of the above options is feasible. In this case, only unauthenticated requests will be served, i.e., public data and collection sharing links.
+* @download.uuid_prefix.your.domain@
+* @collections.uuid_prefix.your.domain@
+* @*--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.
+* @*.collections.uuid_prefix.your.domain@, if you have a wildcard TLS certificate valid for these names.
+
+If neither of the above wildcard options is feasible, you have two choices:
+# 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.
+# 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/arvados/arvados/services/keep-web.
-h3. Tell Workbench about the keep-web service
+h2. Configure Keep-web
-Add *one* of the following entries to your Workbench configuration file (@/etc/arvados/workbench/application.yml@), depending on your DNS setup:
+{% assign railscmd = "bundle exec ./script/get_anonymous_user_token.rb --get" %}
+{% assign railsout = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz" %}
+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' %}
+
+Set the cluster config file like the following:
<notextile>
-<pre><code>keep_web_url: https://%{uuid_or_pdh}--collections.<span class="userinput">uuid_prefix</span>.your.domain
-keep_web_url: https://%{uuid_or_pdh}.collections.<span class="userinput">uuid_prefix</span>.your.domain
-keep_web_url: https://collections.<span class="userinput">uuid_prefix</span>.your.domain
+<pre><code>Clusters:
+ <span class="userinput">uuid_prefix</span>:
+ Services:
+ Controller:
+ ExternalURL: "https://<span class="userinput">uuid_prefix</span>.your.domain"
+ WebDAV:
+ InternalURLs:
+ "http://keep_web_hostname_goes_here:9002/": {}
+ ExternalURL: "https://collections.<span class="userinput">uuid_prefix</span>.your.domain"
+ WebDAVDownload:
+ InternalURLs:
+ "http://keep_web_hostname_goes_here:9002/": {}
+ ExternalURL: "https://download.<span class="userinput">uuid_prefix</span>.your.domain"
+ Users:
+ AnonymousUserToken: "{{railsout}}"
+ Collections:
+ TrustAllContent: false
+ TLS:
+ Insecure: false
</code></pre>
</notextile>
+
+Set @Users.AnonymousUserToken: ""@ (empty string) if you do not want to serve public data.
+
+Set @TLS.Insecure: true@ if your API server's TLS certificate is not signed by a recognized CA.
+
+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.
+
+The following entry on your cluster configuration file (@/etc/arvados/config.yml@) details the URL that will be used for file downloads.
+
+<notextile>
+<pre><code>Clusters:
+ <span class="userinput">uuid_prefix</span>:
+ Services:
+ WebDAVDownload:
+ ExternalURL: "https://download.<span class="userinput">uuid_prefix</span>.your.domain"
+</code></pre>
+</notextile>
+
+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.
+
+<notextile>
+<pre><code>Clusters:
+ <span class="userinput">uuid_prefix</span>:
+ Services:
+ WebDAV:
+ ExternalURL: "https://*--collections.<span class="userinput">uuid_prefix</span>.your.domain"
+ ExternalURL: "https://*.collections.<span class="userinput">uuid_prefix</span>.your.domain"
+ ExternalURL: "https://collections.<span class="userinput">uuid_prefix</span>.your.domain"
+</code></pre>
+</notextile>
+
+h2. Run Keep-web
+
+h3. Start the service (option 1: systemd)
+
+If your system does not use systemd, skip this section and follow the "runit instructions":#runit instead.
+
+If your system uses systemd, the keep-web service should already be set up. Start it and check its status:
+
+<notextile>
+<pre><code>~$ <span class="userinput">sudo systemctl restart keep-web</span>
+~$ <span class="userinput">sudo systemctl status keep-web</span>
+● keep-web.service - Arvados Keep web gateway
+ Loaded: loaded (/lib/systemd/system/keep-web.service; enabled)
+ Active: active (running) since Sat 2019-08-10 10:33:21 UTC; 3 days ago
+ Docs: https://doc.arvados.org/
+ Main PID: 4242 (keep-web)
+ CGroup: /system.slice/keep-web.service
+ └─4242 /usr/bin/keep-web
+[...]
+</code></pre>
+</notextile>
+
+h3(#runit). Start the service (option 2: runit)
+
+Install runit to supervise the Keep-web daemon. {% include 'install_runit' %}
+
+The basic command to start Keep-web in the service run script is:
+
+<notextile>
+<pre><code>exec keep-web
+</code></pre>
+</notextile>
+
projects / arvados.git / blobdiff