diff --git a/README.rst b/README.rst
index d5323a2..575e9c7 100644
--- a/README.rst
+++ b/README.rst
@@ -1,14 +1,19 @@
 OpenStack Nova GCE API README
 -----------------------------
 
-Support of GCE-API for OpenStack. 
+Support of GCE-API for OpenStack.
 
 Installation
 =====
 
 Make sure that python-pip package is installed.
-Run "install.sh". You can check and correct default options in this file.
-Check for keystone options in api-paste.ini and other options in gceapi.conf in /etc/gceapi
+
+Check and correct default options in the begining of 'install.sh' file.
+
+Run "install.sh".
+
+Check for other options in /etc/gceapi/gceapi.conf if needed.
+
 Run it - "gce-api".
 
 Usage
@@ -23,7 +28,7 @@ There are two ways for using it:
 	python google-cloud-sdk/platform/gcutil/gcutil --authorization_uri_base=http://localhost:8787 auth
   and next any other commands:
 	python google-cloud-sdk/platform/gcutil/gcutil --api_host=http://localhost:8787/ --authorization_uri_base=http://localhost:8787 --project demo listzones
-	
+
 2. You have to have Google account
   You can activate an already-authorized account with
 	gcloud config set account <account>
diff --git a/etc/gceapi/api-paste.ini b/etc/gceapi/api-paste.ini
index e75a1cd..05f4a69 100644
--- a/etc/gceapi/api-paste.ini
+++ b/etc/gceapi/api-paste.ini
@@ -7,9 +7,6 @@ paste.filter_factory = gceapi.auth:GceapiKeystoneContext.factory
 
 [filter:authtoken]
 paste.filter_factory = keystoneclient.middleware.auth_token:filter_factory
-auth_port = 35357
-auth_protocol = http
-auth_version = v2.0
 
 #######
 # GCE #
diff --git a/install.sh b/install.sh
index 5b3a0b4..b82283e 100755
--- a/install.sh
+++ b/install.sh
@@ -1,21 +1,146 @@
 #!/bin/bash -e
 
-if [[ $EUID -ne 0 ]]; then
-    echo "This script must be run as root" >&2
+#Parameters to configure
+SERVICE_USERNAME=gceapi
+SERVICE_PASSWORD=gceapi
+SERVICE_TENANT=service
+CONNECTION="mysql://root:password@127.0.0.1/gceapi?charset=utf8"
+LOG_DIR=/var/log/gceapi
+CONF_DIR=/etc/gceapi
+SIGNING_DIR=/var/cache/gceapi
+
+#Check for environment
+if [[ -z "$OS_AUTH_URL" || -z "$OS_USERNAME" || -z "$OS_PASSWORD" || -z "$OS_TENANT_NAME" ]]; then
+    echo "Please set OS_AUTH_URL, OS_USERNAME, OS_PASSWORD and OS_TENANT_NAME"
     exit 1
 fi
 
-LOG_DIR=/var/log/gceapi
-CONF_DIR=/etc/gceapi
-CONF_FILE=$CONF_DIR/gceapi.conf
-APIPASTE_FILE=$CONF_DIR/api-paste.ini
-AUTH_CACHE_DIR=${AUTH_CACHE_DIR:-/var/cache/gceapi}
-AUTH_HOST=127.0.0.1
-CONNECTION="mysql://root:password@127.0.0.1/gceapi?charset=utf8"
-SIGNING_DIR=/var/cache/gceapi
-KEYSTONE_URL="http://$AUTH_HOST:5000/v2.0"
 
 
+#### utilities functions merged from devstack to check required parameter is not empty
+# Prints line number and "message" in error format
+# err $LINENO "message"
+function err() {
+    local exitcode=$?
+    errXTRACE=$(set +o | grep xtrace)
+    set +o xtrace
+    local msg="[ERROR] ${BASH_SOURCE[2]}:$1 $2"
+    echo $msg 1>&2;
+    if [[ -n ${SCREEN_LOGDIR} ]]; then
+        echo $msg >> "${SCREEN_LOGDIR}/error.log"
+    fi
+    $errXTRACE
+    return $exitcode
+}
+# Prints backtrace info
+# filename:lineno:function
+function backtrace {
+    local level=$1
+    local deep=$((${#BASH_SOURCE[@]} - 1))
+    echo "[Call Trace]"
+    while [ $level -le $deep ]; do
+        echo "${BASH_SOURCE[$deep]}:${BASH_LINENO[$deep-1]}:${FUNCNAME[$deep-1]}"
+        deep=$((deep - 1))
+    done
+}
+
+
+# Prints line number and "message" then exits
+# die $LINENO "message"
+function die() {
+    local exitcode=$?
+    set +o xtrace
+    local line=$1; shift
+    if [ $exitcode == 0 ]; then
+        exitcode=1
+    fi
+    backtrace 2
+    err $line "$*"
+    exit $exitcode
+}
+
+
+# Checks an environment variable is not set or has length 0 OR if the
+# exit code is non-zero and prints "message" and exits
+# NOTE: env-var is the variable name without a '$'
+# die_if_not_set $LINENO env-var "message"
+function die_if_not_set() {
+    local exitcode=$?
+    FXTRACE=$(set +o | grep xtrace)
+    set +o xtrace
+    local line=$1; shift
+    local evar=$1; shift
+    if ! is_set $evar || [ $exitcode != 0 ]; then
+        die $line "$*"
+    fi
+    $FXTRACE
+}
+
+# Test if the named environment variable is set and not zero length
+# is_set env-var
+function is_set() {
+    local var=\$"$1"
+    eval "[ -n \"$var\" ]" # For ex.: sh -c "[ -n \"$var\" ]" would be better, but several exercises depends on this
+}
+
+#######################################
+
+get_data() {
+    local match_column=$(($1 + 1))
+    local regex="$2"
+    local output_column=$(($3 + 1))
+    shift 3
+
+    output=$("$@" | \
+           awk -F'|' \
+               "! /^\+/ && \$${match_column} ~ \"^ *${regex} *\$\" \
+                { print \$${output_column} }")
+
+    echo "$output"
+}
+
+get_id () {
+    get_data 1 id 2 "$@"
+}
+
+get_user() {
+    local username=$1
+
+    local user_id=$(get_data 2 $username 1 keystone user-list)
+
+    if [ -n "$user_id" ]; then
+        echo "Found existing $username user" >&2
+        echo $user_id
+    else
+        echo "Creating $username user..." >&2
+        get_id keystone user-create --name=$username \
+                                    --pass="$SERVICE_PASSWORD" \
+                                    --tenant $SERVICE_TENANT \
+                                    --email=$username@example.com
+    fi
+}
+
+add_role() {
+    local user_id=$1
+    local tenant=$2
+    local role_id=$3
+    local username=$4
+
+    user_roles=$(keystone user-role-list \
+                          --user_id $user_id\
+                          --tenant $tenant 2>/dev/null)
+    die_if_not_set $LINENO user_roles "Fail to get user_roles for tenant($tenant) and user_id($user_id)"
+    existing_role=$(get_data 1 $role_id 1 echo "$user_roles")
+    if [ -n "$existing_role" ]
+    then
+        echo "User $username already has role $role_id" >&2
+        return
+    fi
+    keystone user-role-add --tenant $tenant \
+             --user_id $user_id \
+             --role_id $role_id
+}
+
 
 # Determines if the given option is present in the INI file
 # ini_has_option config-file section option
@@ -24,7 +149,7 @@ function ini_has_option() {
     local section=$2
     local option=$3
     local line
-    line=$(sed -ne "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ p; }" "$file")
+    line=$(sudo sed -ne "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ p; }" "$file")
     [ -n "$line" ]
 }
 
@@ -37,20 +162,34 @@ function iniset() {
     local value=$4
     if ! grep -q "^\[$section\]" "$file"; then
         # Add section at the end
-        echo -e "\n[$section]" >>"$file"
+        sudo echo -e "\n[$section]" >>"$file"
     fi
     if ! ini_has_option "$file" "$section" "$option"; then
         # Add it
-        sed -i -e "/^\[$section\]/ a\\
+        sudo sed -i -e "/^\[$section\]/ a\\
 $option = $value
 " "$file"
     else
         # Replace it
-        sed -i -e "/^\[$section\]/,/^\[.*\]/ s|^\($option[ \t]*=[ \t]*\).*$|\1$value|" "$file"
+        sudo sed -i -e "/^\[$section\]/,/^\[.*\]/ s|^\($option[ \t]*=[ \t]*\).*$|\1$value|" "$file"
     fi
 }
 
 
+#create keystone user with admin privileges
+ADMIN_ROLE=$(get_data 2 admin 1 keystone role-list)
+die_if_not_set $LINENO ADMIN_ROLE "Fail to get ADMIN_ROLE by 'keystone role-list' "
+SERVICE_TENANT_ID=$(get_data 2 service 1 keystone tenant-list)
+die_if_not_set $LINENO SERVICE_TENANT_ID "Fail to get service tenant 'keystone tenant-list' "
+
+echo ADMIN_ROLE $ADMIN_ROLE
+echo SERVICE_TENANT $SERVICE_TENANT
+
+SERVICE_USERID=$(get_user $SERVICE_USERNAME)
+die_if_not_set $LINENO SERVICE_USERID "Fail to get user for $SERVICE_USERNAME"
+echo SERVICE_USERID $SERVICE_USERID
+add_role $SERVICE_USERID $SERVICE_TENANT $ADMIN_ROLE $SERVICE_USERNAME
+
 #create log dir
 echo Creating log dir
 install -d $LOG_DIR
@@ -59,34 +198,50 @@ install -d $LOG_DIR
 echo Creating configs
 mkdir -p /etc/gceapi > /dev/null
 if [ ! -s $CONF_FILE ]; then
-    cp etc/gceapi/gceapi.conf $CONF_FILE
+    sudo cp etc/gceapi/gceapi.conf $CONF_FILE
 fi
 if [ ! -s $APIPASTE_FILE ]; then
-    cp etc/gceapi/api-paste.ini $APIPASTE_FILE
+    sudo cp etc/gceapi/api-paste.ini $APIPASTE_FILE
 fi
+
+AUTH_HOST=${OS_AUTH_URL#*//}
+AUTH_HOST=${AUTH_HOST%:*}
+CONF_FILE=$CONF_DIR/gceapi.conf
+APIPASTE_FILE=$CONF_DIR/api-paste.ini
+AUTH_CACHE_DIR=${AUTH_CACHE_DIR:-/var/cache/gceapi}
+AUTH_PORT=${OS_AUTH_URL#*//}
+AUTH_PORT=${AUTH_PORT#*:}
+AUTH_PORT=${AUTH_PORT%/*}
+AUTH_PROTO=${OS_AUTH_URL%%:*}
+
 #update default config with some values
 iniset $CONF_FILE DEFAULT api_paste_config $APIPASTE_FILE
 iniset $CONF_FILE DEFAULT logging_context_format_string "%(asctime)s.%(msecs)03d %(levelname)s %(name)s [%(request_id)s %(user_name)s %(project_name)s] %(instance)s%(message)s"
 iniset $CONF_FILE DEFAULT verbose True
-iniset $CONF_FILE DEFAULT keystone_gce_url "$KEYSTONE_URL"
+iniset $CONF_FILE DEFAULT keystone_gce_url "$OS_AUTH_URL"
 iniset $CONF_FILE database connection "$CONNECTION"
+
 iniset $CONF_FILE keystone_authtoken signing_dir $SIGNING_DIR
-iniset $CONF_FILE keystone_authtoken auth_host "$AUTH_HOST"
-iniset $CONF_FILE keystone_authtoken admin_password password
-iniset $CONF_FILE keystone_authtoken admin_user nova
-iniset $CONF_FILE keystone_authtoken admin_tenant_name service
+iniset $CONF_FILE keystone_authtoken auth_host $AUTH_HOST
+iniset $CONF_FILE keystone_authtoken admin_user $SERVICE_USERNAME
+iniset $CONF_FILE keystone_authtoken admin_password $SERVICE_PASSWORD
+iniset $CONF_FILE keystone_authtoken admin_tenant_name $SERVICE_TENANT
+iniset $CONF_FILE keystone_authtoken auth_protocol $AUTH_PROTO
+iniset $CONF_FILE keystone_authtoken auth_port $AUTH_PORT
+
 
 #init cache dir
 echo Creating signing dir
-mkdir -p $AUTH_CACHE_DIR
-chown $SUDO_USER $AUTH_CACHE_DIR
-rm -f $AUTH_CACHE_DIR/*
+sudo mkdir -p $AUTH_CACHE_DIR
+sudo chown $USER $AUTH_CACHE_DIR
+sudo rm -f $AUTH_CACHE_DIR/*
 
 #install it
 echo Installing package
-python setup.py install
-rm -rf build gce_api.egg-info
+sudo python setup.py install
+sudo rm -rf build gce_api.egg-info
 
 #recreate database
 echo Setuping database
-bin/gceapi-db-setup deb
+sudo bin/gceapi-db-setup deb
+