Add some debug info

Author: angelnu

README.md

@@ -3,6 +3,8 @@
 This container includes scripts used to route traafic from pods through another gateway pod. Typically
 the gateway pod then runs a openvpn client to forward the traffic.
 
+This container is typically used by the [pod-gateway]()
+
 The connection between the pods is done via a vxlan. The gatway provides a DHCP server to let client
 pods to get automatically an IP.
 
@@ -29,7 +31,7 @@ This container provides the required init/sidecar containers for clients and gat
      Optionally, if a VPN is used in the gateway, blocks non VPN outbound traffic.
    - [gateway_sidecar.sh](bin/gateway_sidecar.sh): deploys a DHCP and DNS server
 
-Settings are expected in the `/config` folder - see examples [config](config):
+Settings are expected in the `/config` folder - see examples under [config](config):
 - [config/settings.sh](config/settings.sh): variables used by all helper scripts
 - [config/nat.sh](config/nat.sh): static IP and nat rules for PODs exposing ports through the gateway (and optional VPN) POD
 Default settings might be overwritten by attachin a container volume with the new values to the helper pods.

bin/client_init.sh

@@ -28,12 +28,23 @@ if ping -c 1 -W 1000 8.8.8.8; then
   exit 255
 fi
 
+# For debugging reasons print some info
+ip addr
+ip route
+
 # Derived settings
 K8S_DNS_IP="$(echo ${K8S_DNS_IPS} | cut -d ' ' -f 1)"
 GATEWAY_IP="$(dig +short ${GATEWAY_NAME} @${K8S_DNS_IP})"
 #GW_ORG=$(route |awk '$1=="default"{print $2}')
 NAT_ENTRY="$(grep $(hostname) /config/nat.conf||true)"
 
+# For debugging reasons print some info
+ip addr
+ip route
+
+# Check we can connect to the GATEWAY IP
+ping -c1 $GATEWAY_IP
+
 # Create tunnel NIC
 ip link add vxlan0 type vxlan id $VXLAN_ID dev eth0 dstport 0 || true
 bridge fdb append to 00:00:00:00:00:00 dst $GATEWAY_IP dev vxlan0
@@ -63,7 +74,7 @@ interface \"vxlan0\"
 #Configure IP and default GW though the gateway docker
 if [ -z "$NAT_ENTRY" ]; then
   echo "Get dynamic IP"
-  dhclient -cf /etc/dhclient.conf vxlan0
+  dhclient -v -cf /etc/dhclient.conf vxlan0
 else
   IP=$(echo $NAT_ENTRY|cut -d' ' -f2)
   VXLAN_IP="${VXLAN_IP_NETWORK}.${IP}"
@@ -72,6 +83,12 @@ else
   route add default gw $VXLAN_GATEWAY_IP
   #echo "nameserver $VXLAN_GATEWAY_IP">/etc/resolv.conf.dhclient
 fi
+
+# For debugging reasons print some info
+ip addr
+ip route
+
+# Check we can connect to the gateway ussing the vxlan device
 ping -c1 $VXLAN_GATEWAY_IP
 
 echo "Gateway ready and reachable"