[Doc] Compute Identity Nodes Common Code +

Compute identity nodes are required for Standard Controller configuration
setups. Move their creation and removal functions to common file:

  - create_compute
  - destroy_compute

Allow also to specify the number of Compute nodes to be created.

Change-Id: I5d687b4daf16745758c65ed0d44eec5307e0f7f4
Signed-off-by: Abraham Arce <abraham.arce.moreno@intel.com>

deployment/libvirt/destroy_standard_controller.sh

@@ -5,25 +5,14 @@ SCRIPT_DIR="$(dirname "$(readlink -f "${BASH_SOURCE[0]}" )" )"
 source ${SCRIPT_DIR}/functions.sh
 
 CONFIGURATION="standardcontroller"
-BRIDGE_INTERFACE=${BRIDGE_INTERFACE:-stxbr}
 CONTROLLER=${CONTROLLER:-controller}
 COMPUTE=${COMPUTE:-compute}
+COMPUTE_NODES_NUMBER=${COMPUTE_NODES_NUMBER:-1}
 DOMAIN_DIRECTORY=vms
 
 destroy_controller ${CONFIGURATION} ${CONTROLLER}
 
-for i in {0..1}; do
+for ((i=0; i<=$COMPUTE_NODES_NUMBER; i++)); do
     COMPUTE_NODE=${COMPUTE}-${i}
-    DOMAIN_FILE=$DOMAIN_DIRECTORY/$COMPUTE_NODE.xml
+    destroy_compute $COMPUTE_NODE
-    if virsh list --all --name | grep ${COMPUTE_NODE}; then
-        STATUS=$(virsh list --all | grep ${COMPUTE_NODE} | awk '{ print $3}')
-        if ([ "$STATUS" == "running" ])
-        then
-            sudo virsh destroy ${COMPUTE_NODE}
-        fi
-        sudo virsh undefine ${COMPUTE_NODE}
-        delete_disk /var/lib/libvirt/images/${COMPUTE_NODE}-0.img
-        delete_disk /var/lib/libvirt/images/${COMPUTE_NODE}-1.img
-        [ -e ${DOMAIN_FILE} ] && delete_xml ${DOMAIN_FILE}
-    fi
 done

deployment/libvirt/functions.sh

@@ -132,3 +132,39 @@ destroy_controller() {
         fi
     done
 }
+
+# Create a Compute node
+create_compute() {
+    local COMPUTE_NODE=$1
+    local DOMAIN_FILE=${DOMAIN_DIRECTORY}/${COMPUTE_NODE}.xml
+    sudo qemu-img create -f qcow2 /var/lib/libvirt/images/${COMPUTE_NODE}-0.img 200G
+    sudo qemu-img create -f qcow2 /var/lib/libvirt/images/${COMPUTE_NODE}-1.img 200G
+    cp compute.xml ${DOMAIN_FILE}
+    sed -i -e "
+        s,NAME,${COMPUTE_NODE},;
+        s,DISK0,/var/lib/libvirt/images/${COMPUTE_NODE}-0.img,;
+        s,DISK1,/var/lib/libvirt/images/${COMPUTE_NODE}-1.img,
+        s,%BR1%,${BRIDGE_INTERFACE}1,
+        s,%BR2%,${BRIDGE_INTERFACE}2,
+        s,%BR3%,${BRIDGE_INTERFACE}3,
+        s,%BR4%,${BRIDGE_INTERFACE}4,
+    " ${DOMAIN_FILE}
+    sudo virsh define ${DOMAIN_FILE}
+}
+
+# Delete a Compute node
+destroy_compute() {
+    local COMPUTE_NODE=$1
+    local DOMAIN_FILE=$DOMAIN_DIRECTORY/$COMPUTE_NODE.xml
+    if virsh list --all --name | grep ${COMPUTE_NODE}; then
+        STATUS=$(virsh list --all | grep ${COMPUTE_NODE} | awk '{ print $3}')
+        if ([ "$STATUS" == "running" ])
+        then
+            sudo virsh destroy ${COMPUTE_NODE}
+        fi
+        sudo virsh undefine ${COMPUTE_NODE}
+        delete_disk /var/lib/libvirt/images/${COMPUTE_NODE}-0.img
+        delete_disk /var/lib/libvirt/images/${COMPUTE_NODE}-1.img
+        [ -e ${DOMAIN_FILE} ] && delete_xml ${DOMAIN_FILE}
+    fi
+}

deployment/libvirt/setup_standard_controller.sh

@@ -27,6 +27,7 @@ CONFIGURATION="standardcontroller"
 BRIDGE_INTERFACE=${BRIDGE_INTERFACE:-stxbr}
 CONTROLLER=${CONTROLLER:-controller}
 COMPUTE=${COMPUTE:-compute}
+COMPUTE_NODES_NUMBER=${COMPUTE_NODES_NUMBER:-1}
 DOMAIN_DIRECTORY=vms
 
 bash ${SCRIPT_DIR}/destroy_standard_controller.sh
@@ -35,22 +36,9 @@ bash ${SCRIPT_DIR}/destroy_standard_controller.sh
 
 create_controller $CONFIGURATION $CONTROLLER $BRIDGE_INTERFACE $ISOIMAGE
 
-for i in {0..1}; do
+for ((i=0; i<=$COMPUTE_NODES_NUMBER; i++)); do
     COMPUTE_NODE=${COMPUTE}-${i}
-    sudo qemu-img create -f qcow2 /var/lib/libvirt/images/${COMPUTE_NODE}-0.img 200G
+    create_compute ${COMPUTE_NODE}
-    sudo qemu-img create -f qcow2 /var/lib/libvirt/images/${COMPUTE_NODE}-1.img 200G
-    DOMAIN_FILE=${DOMAIN_DIRECTORY}/${COMPUTE_NODE}.xml
-    cp ${SCRIPT_DIR}/compute.xml ${DOMAIN_FILE}
-    sed -i -e "
-        s,NAME,${COMPUTE_NODE},;
-        s,DISK0,/var/lib/libvirt/images/${COMPUTE_NODE}-0.img,;
-        s,DISK1,/var/lib/libvirt/images/${COMPUTE_NODE}-1.img,
-        s,%BR1%,${BRIDGE_INTERFACE}1,
-        s,%BR2%,${BRIDGE_INTERFACE}2,
-        s,%BR3%,${BRIDGE_INTERFACE}3,
-        s,%BR4%,${BRIDGE_INTERFACE}4,
-    " ${DOMAIN_FILE}
-    sudo virsh define ${DOMAIN_FILE}
 done
 
 sudo virt-manager