ping tweaks

README.md

@@ -20,7 +20,11 @@ Contains scrips and files to create a fielded ros kubernetes cluster.
   * [Links With More Information](#links-with-more-information)
 
 <!-- remote desktop tutorial:
-https://www.e2enetworks.com/help/knowledge-base/how-to-install-remote-desktop-xrdp-on-ubuntu-18-04/ -->
+https://www.e2enetworks.com/help/knowledge-base/how-to-install-remote-desktop-xrdp-on-ubuntu-18-04/
+
+start docker registry: "docker run -d -p 5000:5000 --name registry registry:2.7"
+then build and tag images "docker tag <orig>:latest localhost:5000/<orig>:latest" and follow with "docker push localhost:5000/<orig>:latest" then kubernetes should be able to find the image
+-->
 
 ## Image building
 

clusterStartup.sh

 #!/bin/bash
 
-IP=$(ip route get 8.8.8.8 | awk -F"src " 'NR==1{split($2,a," ");print a[1]}')
-INTERFACE=$(ip route get 8.8.8.8 | awk -F"dev " 'NR==1{split($2,a," ");print a[1]}')
+# IP=$(ip route get 8.8.8.8 | awk -F"src " 'NR==1{split($2,a," ");print a[1]}')
+# INTERFACE=$(ip route get 8.8.8.8 | awk -F"dev " 'NR==1{split($2,a," ");print a[1]}')
 
-OLDIFS=$IFS
-IFS="."
-read ip1 ip2 ip3 ip4 <<< "$IP"
-VIP="$ip1.$ip2.$ip3.25" # virtual ip addr
-IFS=$OLDIFS
+# OLDIFS=$IFS
+# IFS="."
+# read ip1 ip2 ip3 ip4 <<< "$IP"
+# VIP="$ip1.$ip2.$ip3.25" # virtual ip addr
+# IFS=$OLDIFS
+
+VIP="192.168.1.25" # vip for load balancer
+INTERFACE="wlp0s20f3" # laptop interface
+JINTERFACE="wlan0" # jetson interface
 
+echo "Using interface: $INTERFACE"
+echo "Using jetson interface: $JINTERFACE"
+echo "And load-balancer IP: $VIP"
 
 sudo swapoff -a # turn off swap memory
 # put load balancer pod spec in the manifests directory
@@ -63,13 +70,9 @@ IFS=$OLDIFS
 
 echo "------------------------------------------"
 newKey=$(sudo kubeadm init phase upload-certs --upload-certs | sed -n '3~0p')
-
-# create vip.yaml in manifests of new control plane
-# echo "$(ip route get 8.8.8.8 | awk -F"dev " 'NR==1{split($2,a," ");print a[1]}')"
-
 # was working here
 echo "$vipCMD && sudo $(kubeadm token create --print-join-command) --control-plane --certificate-key $newKey" | xclip -sel clip
 echo "..."
-echo "Done starting cluster, control-plane join command is copied, don't forget to move load-balancer virtual ip yaml over to new nodes"
+echo "Done starting cluster, control-plane join command is copied to clipboard."
 
 exit 0

docker/pinger/ping.sh

 #!/usr/local/bin/bash
 
-# endpoints="localhost" filename="/home/llh/pingstats.json"
+echo "pinging: $endpoints"
+echo "through: $interface"
+echo "save to: $filename"
+echo " "
 
 if test -f "$filename"; then
   echo "file $filename already exists."
@@ -9,20 +12,18 @@ else
   echo "{}" > "$filename"
 fi
 
-if [[ -n "$nfsFilename" ]]; then
-  if test -f "$nfsFilename"; then
-    echo "NFS file $nfsFilename already exists."
-  else
-    touch "$nfsFilename"
-    echo "{}" > "$nfsFilename"
-  fi
-fi
+# if [[ -n "$nfsFilename" ]]; then
+#   if test -f "$nfsFilename"; then
+#     echo "NFS file $nfsFilename already exists."
+#   else
+#     touch "$nfsFilename"
+#     echo "{}" > "$nfsFilename"
+#   fi
+# fi
 
 echo ping "${endpoints} every ${downtime:=3} sec, saving to ${filename}"
 # for endpoints in "${endpoints[@]}"; do
 # done
-
-# --------------------------------------
 while true; do
 
   # for endpoints in "${endpoints[@]}"; do
@@ -53,12 +54,6 @@ while true; do
     echo "{}" > "$filename"
   fi
 
-  echo "debugging:"
-  echo $num1
-  echo $num2
-  echo $num3
-  echo $num4
-
   # keep a diary
   if [[ -n "$num4" ]]; then
     jq --arg timedate $(date +"%H:%M_%F") --arg target $endpoints --argjson rttMin $num1 --argjson rttAvg $num2 --argjson rttMax $num3 --argjson stdDev $num4 '.[$target][$timedate] += [{"min":$rttMin,"avg":$rttAvg,"max":$rttMax,"std":$stdDev}]' "$filename" > "$filename.tmp" && mv "$filename.tmp" "$filename"
@@ -66,17 +61,6 @@ while true; do
     jq --arg timedate $(date +"%H:%M_%F") --arg target $endpoints --argjson rttMin $num1 --argjson rttAvg $num2 --argjson rttMax $num3 '.[$target][$timedate] += [{"min":$rttMin,"avg":$rttAvg,"max":$rttMax}]' "$filename" > "$filename.tmp" && mv "$filename.tmp" "$filename"
   fi
 
-  # write home about it (if connected)
-  if [[ -n "$nfsFilename" ]]; then
-    if [[ -n "$num4" ]]; then
-      jq --arg timedate $(date +"%H:%M_%F") --arg hostname $HOSTNAME --arg target $endpoints --argjson rttMin $num1 --argjson rttAvg $num2 --argjson rttMax $num3 --argjson stdDev $num4 '.[$hostname][$target][$timedate] += [{"min":$rttMin,"avg":$rttAvg,"max":$rttMax,"std":$stdDev}]' "$nfsFilename" > "$nfsFilename.tmp" && mv "$nfsFilename.tmp" "$nfsFilename"
-    else
-      jq --arg timedate $(date +"%H:%M_%F") --arg hostname $HOSTNAME --arg target $endpoints --argjson rttMin $num1 --argjson rttAvg $num2 --argjson rttMax $num3 '.[$hostname][$target][$timedate] += [{"min":$rttMin,"avg":$rttAvg,"max":$rttMax}]' "$nfsFilename" > "$nfsFilename.tmp" && mv "$nfsFilename.tmp" "$nfsFilename"
-    fi
-  fi
-
-  # done
-
   sleep ${downtime:=3}
 done
 
@@ -84,6 +68,6 @@ if test -f "$filename.tmp"; then
   rm "$filename.tmp"
 fi
 
-if test -f "$nfsFilename.tmp"; then
-  rm "$nfsFilename.tmp"
-fi
+# if test -f "$nfsFilename.tmp"; then
+#   rm "$nfsFilename.tmp"
+# fi

kubernetes/ping-deployment.yaml

@@ -17,7 +17,7 @@ spec:
         node: ping
         app: cluster
     spec:
-      hostname: service-ping
+      hostname: pinger
       tolerations:
       - key: "node-role.kubernetes.io/master"
         effect: "NoSchedule"
@@ -40,18 +40,16 @@ spec:
           mountPath: /tmp/pingStats
         image: localhost:5000/doorbell:latest
         imagePullPolicy: Always
-        command: ["/usr/local/bin/bash"]       # You need to run some task inside a
-        args: ["-c", "/ping.sh & while true; do sleep 10; done;"] # Our simple program just sleeps inside
-        # args: ["-c", "/ping.sh" & while true; do sleep 10; done;"] # Our simple program just sleeps inside
-        # args: ["-c", "./ping.sh"] # Our simple program just sleeps inside
+        command: ["/usr/local/bin/bash"]
+        args: ["-c", "/ping.sh & while true; do sleep 10; done;"]
         env:
         - name: endpoints
-          value: "localhost"
+          value: "192.168.1.230"
         - name: filename
           value: "/tmp/pingStats/pingStats.json"
         ports:
         - containerPort: 11311
           name: pingport
       nodeSelector:
-        kubernetes.io/hostname: pop-os # to run on control plane
+        kubernetes.io/hostname: neruda # to run on control plane
         # kubernetes.io/hostname: sentinel