Configuring Solr on a remote host

This assumes you have Solr configured as explained in my post on installing Solr 3.6 on Ubuntu 12.04.

1. Make Solr accessible from outside the localhost

sudo nano /etc/default/jetty

JETTY_HOST=0.0.0.0

2. Add user authentication

sudo nano /usr/share/solr/WEB-INF/web.xml

Add this to the <web-app> section:

<security-constraint>
  <web-resource-collection>
    <web-resource-name>Protected Resource</web-resource-name>
    <url-pattern>/*</url-pattern>
  </web-resource-collection>
  <auth-constraint>
    <role-name>user</role-name>
  </auth-constraint>
</security-constraint>

<login-config>
  <auth-method>BASIC</auth-method>
  <realm-name>Test Realm</realm-name>
</login-config>

3. Configure jetty.xml

Ensure the following is in /etc/jetty/jetty.xml

<Set name="UserRealms">
  <Array type="org.mortbay.jetty.security.UserRealm">
    <Item>
      <New class="org.mortbay.jetty.security.HashUserRealm">
        <Set name="name">Test Realm</Set>
        <Set name="config"><SystemProperty name="jetty.home" default="."/>/etc/realm.properties</Set>
        <Set name="refreshInterval">0</Set>
      </New>
    </Item>
  </Array>
</Set>

4. Add username and password

sudo nano /usr/share/jetty/etc/realm.properties

my_username_here: MD5:md5_hash_here,user

5. Restart jetty

sudo /etc/init.d/jetty restart

You should now be prompted for a password when accessing mysite:8080/solr

Or go to http://my_username_here:my_password_here@mysite:8080/solr/