diff --git a/config.yaml b/config.yaml
index 8ad6aa3..c257b6b 100644
--- a/config.yaml
+++ b/config.yaml
@@ -12,7 +12,19 @@ options:
   install-url:
     type: string
     default: "https://nexus.opendaylight.org/content/groups/public/org/opendaylight/integration/distribution-karaf/0.2.2-Helium-SR2/distribution-karaf-0.2.2-Helium-SR2.tar.gz"
-    description: Web addressable location of OpenDayLight binaries to install
+    description: |
+      Web addressable location of OpenDayLight binaries to install
+
+      If unset, the charm will install binaries from the opendaylight-karaf
+      package.
+  install-sources:
+    type: string
+    description: |
+      Package sources to install. Can be used to specify where to install the
+      opendaylight-karaf package from.
+  install-keys:
+    type: string
+    description: Apt keys for package install sources
   http-proxy:
     type: string
     default:
diff --git a/hooks/odl_controller_hooks.py b/hooks/odl_controller_hooks.py
index ca563e8..bd093ce 100755
--- a/hooks/odl_controller_hooks.py
+++ b/hooks/odl_controller_hooks.py
@@ -21,12 +21,14 @@ from charmhelpers.core.host import (
     service_start
 )
 
-from charmhelpers.fetch import apt_install, install_remote
+from charmhelpers.fetch import (
+    configure_sources, apt_install, install_remote)
 
 from odl_controller_utils import write_mvn_config, process_odl_cmds
 from odl_controller_utils import PROFILES
 
 PACKAGES = ["default-jre-headless", "python-jinja2"]
+KARAF_PACKAGE = "opendaylight-karaf"
 
 hooks = Hooks()
 config = config()
@@ -50,26 +52,37 @@ def controller_api_joined(r_id=None):
 
 @hooks.hook()
 def install():
-    # install dependencies
+    if config.get("install-sources"):
+        configure_sources(update=True, sources_var="install-sources",
+                          keys_var="install-keys")
+
+    # install packages
     apt_install(PACKAGES, fatal=True)
 
-    # install opendaylight
     install_url = config["install-url"]
-    install_remote(install_url, dest="/opt")  # this extracts the archive too
+    if install_url:
+        # install opendaylight from tarball
 
-    # The extracted dirname. Look at what's on disk instead of mangling, so
-    # the distribution tar.gz's name doesn't matter.
-    name = [f for f in os.listdir("/opt")
+        # this extracts the archive too
+        install_remote(install_url, dest="/opt")
+        # The extracted dirname. Look at what's on disk instead of mangling, so
+        # the distribution tar.gz's name doesn't matter.
+        install_dir_name = [
+            f for f in os.listdir("/opt")
             if f.startswith("distribution-karaf")][0]
-
-    if not os.path.exists("/opt/opendaylight-karaf"):
-        os.symlink(name, "/opt/opendaylight-karaf")
+        if not os.path.exists("/opt/opendaylight-karaf"):
+            os.symlink(install_dir_name, "/opt/opendaylight-karaf")
+    else:
+        apt_install([KARAF_PACKAGE], fatal=True)
+        install_dir_name = "opendaylight-karaf"
 
     shutil.copy("files/odl-controller.conf", "/etc/init")
     adduser("opendaylight", system_user=True)
     mkdir("/home/opendaylight", owner="opendaylight", group="opendaylight",
           perms=0755)
-    check_call(["chown", "-R", "opendaylight:opendaylight", "/opt/" + name])
+    check_call(
+        ["chown", "-R", "opendaylight:opendaylight",
+         os.path.join("/opt", install_dir_name)])
     mkdir("/var/log/opendaylight", owner="opendaylight", group="opendaylight",
           perms=0755)