2019-02-04: CP;AC; update to bionic (which is not using ifupdown)

hooks/install

@@ -3,6 +3,7 @@
 # e.g. apt install -y foo
 # Make sure this hook exits cleanly and is idempotent.
 set -e
+set -x
 status-set maintenance "Setting the default gateway"
 
 GATEWAY="$(config-get gateway)"
@@ -14,44 +15,64 @@ if [ -z "$GATEWAY" ]; then
 fi
 
 GATEWAY_IP=`echo "$GATEWAY" | awk -F "/" '{print $1}'`
-OLD_GATEWAY_IP=`grep -s gateway /etc/network/interfaces /etc/network/interfaces.d/*.cfg | head -1 | awk '{print $NF}'`
 
-if [ "$GATEWAY_IP" == "$OLD_GATEWAY_IP" ]; then
-    juju-log "Default gateway is already set. Exiting..."
-    status-set active "Unit is ready."
-    exit 0
-fi
+source /etc/lsb-release
+
+RELEASE_MAJOR="$(echo $DISTRIB_RELEASE | awk -F '.' '{print $1}')"
+
+if [ "$RELEASE_MAJOR" -le "16" ]; then
+    OLD_GATEWAY_IP=`grep -s gateway /etc/network/interfaces /etc/network/interfaces.d/*.cfg | head -1 | awk '{print $NF}'`
+
+    if [ "$GATEWAY_IP" == "$OLD_GATEWAY_IP" ]; then
+        juju-log "Default gateway is already set. Exiting..."
+        status-set active "Unit is ready."
+        exit 0
+    fi
+
+    apt install -y sipcalc
 
-apt install -y sipcalc
+    GATEWAY_NET=`sipcalc $GATEWAY | grep "Network address" | awk '{print $NF}'`
 
-GATEWAY_NET=`sipcalc $GATEWAY | grep "Network address" | awk '{print $NF}'`
+    IFS=$'\n'
+    FOUND=0
+    for LINE in $(grep -s address /etc/network/interfaces /etc/network/interfaces.d/*.cfg); 
+    do
+        FILE=`echo $LINE | awk '{print substr($1, 0, length($1)-1)}'`  # drop ':'
+        ADDRESS=`echo $LINE | awk '{print $NF}'`
+        ADDRESS_NET=`sipcalc $ADDRESS | grep "Network address" | awk '{print $NF}'`
+        if [ "$ADDRESS_NET" == "$GATEWAY_NET" ]; then
+            FOUND=1
+        fi
+    done
+    unset IFS
 
-IFS=$'\n'
-FOUND=0
-for LINE in $(grep -s address /etc/network/interfaces /etc/network/interfaces.d/*.cfg); 
-do
-    FILE=`echo $LINE | awk '{print substr($1, 0, length($1)-1)}'`  # drop ':'
-    ADDRESS=`echo $LINE | awk '{print $NF}'`
-    ADDRESS_NET=`sipcalc $ADDRESS | grep "Network address" | awk '{print $NF}'`
-    if [ "$ADDRESS_NET" == "$GATEWAY_NET" ]; then
-	FOUND=1
+    if [ "$FOUND" -gt 0 ]; then
+        juju-log "Setting default gateway: $GATEWAY_IP ..."
+        sed -i "/${GATEWAY_IP}/a\    gateway $GATEWAY_IP" $FILE
+        if [ ! -z "$OLD_GATEWAY_IP" ]; then
+            juju-log "Removing old default gateway $OLD_GATEWAY_IP..."
+            sed -i "/${OLD_GATEWAY_IP}/d" $FILE
+        fi
+        ip route del default
+        ip route add default via $GATEWAY_IP
+        juju-log "Default gateway changed"
+        status-set active "Unit is ready"
+    else
+        juju-log "Network not found. Exiting..."
+        status-set blocked "Incorrect gateway IP."
     fi
-done
-unset IFS
-
-if [ "$FOUND" -gt 0 ]; then
-    juju-log "Setting default gateway: $GATEWAY_IP ..."
-    sed -i "/${GATEWAY_IP}/a\    gateway $GATEWAY_IP" $FILE
-    if [ ! -z "$OLD_GATEWAY_IP" ]; then
-	juju-log "Removing old default gateway $OLD_GATEWAY_IP..."
-	sed -i "/${OLD_GATEWAY_IP}/d" $FILE
+else # release is not less or equal than trusty
+    # copy metric 0 routes to routes with metric 1
+    ip route show default metric 0 | while read line; do ip route append $line metric 1 || true; done
+    # delete metric 0 routes
+    ip route show default metric 0 | while read line; do ip route del $line metric 0; done
+    # add our route
+    if ip route replace default via $GATEWAY_IP metric 0; then
+        juju-log "Default gateway set"
+        status-set active "Unit is ready"
+    else
+        juju-log "Route change failed. Exiting..."
+        status-set blocked "Incorrect gateway IP."
     fi
-    ip route del default
-    ip route add default via $GATEWAY_IP
-    juju-log "Default gateway changed"
-    status-set active "Unit is ready"
-else
-    juju-log "Network not found. Exiting..."
-    status-set blocked "Incorrect gateway IP."
 fi
 

metadata.yaml

@@ -7,6 +7,7 @@ description: |
 tags:
   - network
 series:
+  - bionic
   - xenial
   - trusty
 requires: