Added a new remote node configuration script to set rmem/wmem (#1647)

* Added a new remote node configuration script to set rmem/wmem

* Update common.sh for rmem/wmem configuration

multinode-demo/common.sh

@@ -104,16 +104,16 @@ tune_networking() {
       # test the existence of the sysctls before trying to set them
       # go ahead and return true and don't exit if these calls fail
       sysctl net.core.rmem_max 2>/dev/null 1>/dev/null &&
-          sudo sysctl -w net.core.rmem_max=67108864 1>/dev/null 2>/dev/null
+          sudo sysctl -w net.core.rmem_max=1610612736 1>/dev/null 2>/dev/null
 
       sysctl net.core.rmem_default 2>/dev/null 1>/dev/null &&
-          sudo sysctl -w net.core.rmem_default=26214400 1>/dev/null 2>/dev/null
+          sudo sysctl -w net.core.rmem_default=1610612736 1>/dev/null 2>/dev/null
 
       sysctl net.core.wmem_max 2>/dev/null 1>/dev/null &&
-          sudo sysctl -w net.core.wmem_max=67108864 1>/dev/null 2>/dev/null
+          sudo sysctl -w net.core.wmem_max=1610612736 1>/dev/null 2>/dev/null
 
       sysctl net.core.wmem_default 2>/dev/null 1>/dev/null &&
-          sudo sysctl -w net.core.wmem_default=26214400 1>/dev/null 2>/dev/null
+          sudo sysctl -w net.core.wmem_default=1610612736 1>/dev/null 2>/dev/null
     ) || true
   fi
 

net/gce.sh

@@ -376,6 +376,7 @@ $(
     install-earlyoom.sh \
     install-libssl-compatability.sh \
     install-rsync.sh \
+    network-config.sh \
 )
 
 cat > /etc/motd <<EOM

net/remote/remote-node.sh

@@ -35,9 +35,6 @@ else
   setupArgs="-l"
 fi
 
-sudo sysctl -w net.core.rmem_default=1610612736
-sudo sysctl -w net.core.wmem_default=1610612736
-
 case $deployMethod in
 snap)
   SECONDS=0

net/scripts/network-config.sh

@@ -0,0 +1,11 @@
+#!/bin/bash -ex
+#
+
+[[ $(uname) = Linux ]] || exit 1
+[[ $USER = root ]] || exit 1
+
+sudo sysctl -w net.core.rmem_default=1610612736
+sudo sysctl -w net.core.rmem_max=1610612736
+
+sudo sysctl -w net.core.wmem_default=1610612736
+sudo sysctl -w net.core.wmem_max=1610612736