Once Xen Orchestra is installed, you can configure some parameters in the configuration file. Let's see how to do that.


The configuration file is in /etc/xo-server/config.yaml.

WARNING: YAML is very strict with indentation: use spaces, not tabs.

User to run XO-server as

By default, XO-server is running as 'root'. You can change that by uncommenting these lines and choose whatever user/group you want:

user: 'nobody'
group: 'nogroup'

Warning! A non-privileged user:

  • can't bind to a port < 1024
  • can't mount NFS shares

HTTP listen address and port

By default, XO-server listens to all addresses ( and runs on port 80. You can change this if you want in the # Basic HTTP section:

host: ''
port: 80


XO-server can also run in HTTPS (both HTTP and HTTPS can cohabit) - just modify what's needed in the # Basic HTTPS section, this time with certificates/keys you want and their path:

host: ''
port: 443
certificate: './certificate.pem'
key: './key.pem'

If a chain of certificates authorities is needed, you may bundle them directly in the certificate. Note: the order of certificates does matter, your certificate should come first followed by the certificate of the above certificate authority up to the root.

HTTPS redirection

If you want to redirect everything to HTTPS, you can modify the configuration like this:

# If set to true, all HTTP traffic will be redirected to the first HTTPs configuration.

  redirectToHttps: true

This should be written just before the mount option, inside the http: block.

You shouldn't have to change this. It's the path were "xo-web" files are served by "xo-server.

      - '../xo-web/dist/'

Redis server

By default, XO-server will try to contact Redis server on localhost, with the port 6379. But you can define anything else you want:

  uri: 'tcp://db:password@hostname:port'

Proxy for XenServer updates and patches

To check if your hosts are up-to-date, we need to access

And to download the patches, access to

To do that behind a corporate proxy, just add the httpProxy variable to fit in your current proxy configuration.

You can add this at the end of your config file:

# HTTP proxy configuration used by xo-server to fetch resources on the Internet.
# See:

httpProxy: 'http://username:password@proxyAddress:port'

Log file

On XOA, the log file for XO-server is in /var/log/syslog. It contains all the server information returned and can be a real help when you have trouble.

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