@@ -53,10 +53,18 @@ NOVA_AUTH_CACHE_DIR=${NOVA_AUTH_CACHE_DIR:-/var/cache/nova}

 NOVA_CONF_DIR=/etc/nova

 NOVA_CONF=$NOVA_CONF_DIR/nova.conf

 NOVA_CELLS_CONF=$NOVA_CONF_DIR/nova-cells.conf

+NOVA_CPU_CONF=$NOVA_CONF_DIR/nova-cpu.conf

 NOVA_FAKE_CONF=$NOVA_CONF_DIR/nova-fake.conf

 NOVA_CELLS_DB=${NOVA_CELLS_DB:-nova_cell}

 NOVA_API_DB=${NOVA_API_DB:-nova_api}

+# The total number of cells we expect. Must be greater than one and doesn't

+# count cell0.

+NOVA_NUM_CELLS=${NOVA_NUM_CELLS:-1}

+# Our cell index, so we know what rabbit vhost to connect to.

+# This should be in the range of 1-$NOVA_NUM_CELLS

+NOVA_CPU_CELL=${NOVA_CPU_CELL:-1}

+

 NOVA_API_PASTE_INI=${NOVA_API_PASTE_INI:-$NOVA_CONF_DIR/api-paste.ini}

 if is_suse; then

@@ -479,7 +487,7 @@ function create_nova_conf {

     # require them running on the host. The ensures that n-cpu doesn't

     # leak a need to use the db in a multinode scenario.

     if is_service_enabled n-api n-cond n-sched; then

-        iniset $NOVA_CONF database connection `database_connection_url nova`

+        iniset $NOVA_CONF database connection `database_connection_url nova_cell0`

         iniset $NOVA_CONF api_database connection `database_connection_url nova_api`

     fi

@@ -614,6 +622,20 @@ function create_nova_conf {

     if [ "$NOVA_USE_SERVICE_TOKEN" == "True" ]; then

         init_nova_service_user_conf

     fi

+

+    if is_service_enabled n-cond; then

+        for i in $(seq 1 $NOVA_NUM_CELLS); do

+            local conf

+            local vhost

+            conf=$(conductor_conf $i)

+            vhost="nova_cell${i}"

+            iniset $conf database connection `database_connection_url nova_cell${i}`

+            iniset $conf conductor workers "$API_WORKERS"

+            iniset $conf DEFAULT debug "$ENABLE_DEBUG_LOG_LEVEL"

+            rpc_backend_add_vhost $vhost

+            iniset_rpc_backend nova $conf DEFAULT $vhost

+        done

+    fi

 }

 function init_nova_service_user_conf {

@@ -628,6 +650,11 @@ function init_nova_service_user_conf {

     iniset $NOVA_CONF service_user auth_strategy keystone

 }

+function conductor_conf {

+    local cell="$1"

+    echo "${NOVA_CONF_DIR}/nova_cell${cell}.conf"

+}

+

 function init_nova_cells {

     if is_service_enabled n-cell; then

         cp $NOVA_CONF $NOVA_CELLS_CONF

@@ -694,8 +721,6 @@ function init_nova {

         recreate_database $NOVA_API_DB

         $NOVA_BIN_DIR/nova-manage --config-file $NOVA_CONF api_db sync

-        # (Re)create nova databases

-        recreate_database nova

         recreate_database nova_cell0

         # map_cell0 will create the cell mapping record in the nova_api DB so

@@ -707,6 +732,12 @@ function init_nova {

         # Migrate nova and nova_cell0 databases.

         $NOVA_BIN_DIR/nova-manage --config-file $NOVA_CONF db sync

+        # (Re)create nova databases

+        for i in $(seq 1 $NOVA_NUM_CELLS); do

+            recreate_database nova_cell${i}

+            $NOVA_BIN_DIR/nova-manage --config-file $(conductor_conf $i) db sync

+        done

+

         if is_service_enabled n-cell; then

             recreate_database $NOVA_CELLS_DB

         fi

@@ -715,9 +746,13 @@ function init_nova {

         # Needed for flavor conversion

         $NOVA_BIN_DIR/nova-manage --config-file $NOVA_CONF db online_data_migrations

+        # FIXME(danms): Should this be configurable?

+        iniset $NOVA_CONF workarounds disable_group_policy_check_upcall True

+

         # create the cell1 cell for the main nova db where the hosts live

-        nova-manage cell_v2 create_cell --transport-url $(get_transport_url) \

-            --name 'cell1'

+        for i in $(seq 1 $NOVA_NUM_CELLS); do

+            nova-manage --config-file $NOVA_CONF --config-file $(conductor_conf $i) cell_v2 create_cell --name "cell$i"

+        done

     fi

     create_nova_cache_dir

@@ -825,25 +860,38 @@ function start_nova_api {

 # start_nova_compute() - Start the compute process

 function start_nova_compute {

+    local nomulticellflag="$1"

     # Hack to set the path for rootwrap

     local old_path=$PATH

     export PATH=$NOVA_BIN_DIR:$PATH

     if is_service_enabled n-cell; then

         local compute_cell_conf=$NOVA_CELLS_CONF

+        # NOTE(danms): Don't setup conductor fleet for cellsv1

+        nomulticellflag='nomulticell'

     else

         local compute_cell_conf=$NOVA_CONF

     fi

+    if [ "$nomulticellflag" = 'nomulticell' ]; then

+        # NOTE(danms): Grenade doesn't setup multi-cell rabbit, so

+        # skip these bits and use the normal config.

+        NOVA_CPU_CONF=$compute_cell_conf

+        echo "Skipping multi-cell conductor fleet setup"

+    else

+        cp $compute_cell_conf $NOVA_CPU_CONF

+        iniset_rpc_backend nova $NOVA_CPU_CONF DEFAULT "nova_cell${NOVA_CPU_CELL}"

+    fi

+

     if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then

         # The group **$LIBVIRT_GROUP** is added to the current user in this script.

         # ``sg`` is used in run_process to execute nova-compute as a member of the

         # **$LIBVIRT_GROUP** group.

-        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $compute_cell_conf" $LIBVIRT_GROUP

+        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CPU_CONF" $LIBVIRT_GROUP

     elif [[ "$VIRT_DRIVER" = 'lxd' ]]; then

-        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $compute_cell_conf" $LXD_GROUP

+        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CPU_CONF" $LXD_GROUP

     elif [[ "$VIRT_DRIVER" = 'docker' || "$VIRT_DRIVER" = 'zun' ]]; then

-        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $compute_cell_conf" $DOCKER_GROUP

+        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CPU_CONF" $DOCKER_GROUP

     elif [[ "$VIRT_DRIVER" = 'fake' ]]; then

         local i

         for i in `seq 1 $NUMBER_FAKE_NOVA_COMPUTE`; do

@@ -852,13 +900,13 @@ function start_nova_compute {

             # gets its own configuration and own log file.

             local fake_conf="${NOVA_FAKE_CONF}-${i}"

             iniset $fake_conf DEFAULT nhost "${HOSTNAME}${i}"

-            run_process "n-cpu-${i}" "$NOVA_BIN_DIR/nova-compute --config-file $compute_cell_conf --config-file $fake_conf"

+            run_process "n-cpu-${i}" "$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CPU_CONF --config-file $fake_conf"

         done

     else

         if is_service_enabled n-cpu && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

             start_nova_hypervisor

         fi

-        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $compute_cell_conf"

+        run_process n-cpu "$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CPU_CONF"

     fi

     export PATH=$old_path

@@ -878,7 +926,6 @@ function start_nova_rest {

     fi

     # ``run_process`` checks ``is_service_enabled``, it is not needed here

-    run_process n-cond "$NOVA_BIN_DIR/nova-conductor --config-file $compute_cell_conf"

     run_process n-cell-region "$NOVA_BIN_DIR/nova-cells --config-file $api_cell_conf"

     run_process n-cell-child "$NOVA_BIN_DIR/nova-cells --config-file $compute_cell_conf"

@@ -901,8 +948,38 @@ function start_nova_rest {

     export PATH=$old_path

 }

+function enable_nova_fleet {

+    if is_service_enabled n-cond; then

+        enable_service n-super-cond

+        for i in $(seq 1 $NOVA_NUM_CELLS); do

+            enable_service n-cond-cell${i}

+        done

+    fi

+}

+

+function start_nova_conductor {

+    if is_service_enabled n-cell; then

+        echo "Starting nova-conductor in a cellsv1-compatible way"

+        run_process n-cond "$NOVA_BIN_DIR/nova-conductor --config-file $NOVA_CELLS_CONF"

+        return

+    fi

+

+    enable_nova_fleet

+    if is_service_enabled n-super-cond; then

+        run_process n-super-cond "$NOVA_BIN_DIR/nova-conductor --config-file $NOVA_CONF"

+    fi

+    for i in $(seq 1 $NOVA_NUM_CELLS); do

+        if is_service_enabled n-cond-cell${i}; then

+            local conf

+            conf=$(conductor_conf $i)

+            run_process n-cond-cell${i} "$NOVA_BIN_DIR/nova-conductor --config-file $conf"

+        fi

+    done

+}

+

 function start_nova {

     start_nova_rest

+    start_nova_conductor

     start_nova_compute

 }

@@ -931,14 +1008,24 @@ function stop_nova_rest {

     # Kill the nova screen windows

     # Some services are listed here twice since more than one instance

     # of a service may be running in certain configs.

-    for serv in n-api n-net n-sch n-novnc n-xvnc n-cauth n-spice n-cond n-cell n-cell n-api-meta n-sproxy; do

+    for serv in n-api n-net n-sch n-novnc n-xvnc n-cauth n-spice n-cell n-cell n-api-meta n-sproxy; do

         stop_process $serv

     done

 }

+function stop_nova_conductor {

+    enable_nova_fleet

+    for srv in n-super-cond $(seq -f n-cond-cell%0.f 1 $NOVA_NUM_CELLS); do

+        if is_service_enabled $srv; then

+            stop_process $srv

+        fi

+    done

+}

+

 # stop_nova() - Stop running processes (non-screen)

 function stop_nova {

     stop_nova_rest

+    stop_nova_conductor

     stop_nova_compute

 }

@@ -1301,7 +1301,9 @@ fi

 # Unable to use LUKS passphrase that is exactly 16 bytes long

 # https://bugzilla.redhat.com/show_bug.cgi?id=1447297

 if is_service_enabled nova; then

-    iniset $NOVA_CONF key_manager fixed_key $(generate_hex_string 36)

+    key=$(generate_hex_string 36)

+    iniset $NOVA_CONF key_manager fixed_key "$key"

+    iniset $NOVA_CPU_CONF key_manager fixed_key "$key"

 fi

 # Launch the nova-api and wait for it to answer before continuing