Add quickstart scripts for easy cluster setup

scripts/1.qemu.sh

@@ -0,0 +1,78 @@
+#! /bin/sh
+#
+# This collection of scripts aims to install a NOVIT cluster easily, with help of QEMU
+#
+# Admin token to unlock the DLS store
+DLS_UNLOCK_TOKEN=changeme
+#
+# QEMU local bridge name. If you specificy a custom name, you may have to configure qemu bridge helper to allow it
+QEMU_BR_NAME=virbr0
+#
+# QEMU VM default disk size
+QEMU_DISK_SIZE=30G
+# Allocated CPUs to QEMU VMs
+QEMU_VM_CPU=4
+# Allocated Memory to QEMU VMs
+QEMU_VM_MEM=8096
+################
+
+
+## QEMU functions
+#
+prereqs_qemu() {
+  for com in qemu-system-x86_64 truncate docker iptables ; do
+    command -v $com 1>/dev/null || error Command $com not found, please install it. Aborting...
+  done
+}
+setup_network_qemu() {
+  #
+  ip li show $QEMU_BR_NAME &>/dev/null && ip li del $QEMU_BR_NAME
+  ip li add name $QEMU_BR_NAME type bridge
+  ip li set $QEMU_BR_NAME up
+  QEMU_BR_IP=$(extract_var clusters gateway)
+  QEMU_BR_MASK=$(extract_var clusters netmask)
+  if [ $(echo $QEMU_BR_IP | wc -w) -gt 1 ]; then
+    perror "More than one cluster is configured, not compatible with our quick-start setup, exiting"
+  fi
+  pinfo "Using detected gateway IP $QEMU_BR_IP for bridge $QEMU_BR_NAME"
+  ip a add $QEMU_BR_IP dev $QEMU_BR_NAME && {
+    sudo iptables -t nat -I POSTROUTING -j MASQUERADE -s $QEMU_BR_IP/$QEMU_BR_MASK \! -o $QEMU_BR_NAME
+    sudo iptables -I FORWARD -o $QEMU_BR_NAME -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+    sudo iptables -I FORWARD -j ACCEPT -i $QEMU_BR_NAME
+  }
+}
+run_qemu() {
+  id=1
+  for host in ${!hosts[*]}; do
+    ip route add ${hosts[$host]} dev $QEMU_BR_NAME
+    info "Starting host $host with ip ${hosts[$host]}"
+    if test -f $ctxdir/data/$host/pid ; then
+      info "Detected a pid file, killing process in case VM was already started"
+      kill $(<$ctxdir/$host/pid) && sleep 1
+    fi
+    qemu-system-x86_64 -enable-kvm -smp $QEMU_VM_CPU -m $QEMU_VM_MEM \
+      -nic bridge,br=$QEMU_BR_NAME,mac=42:42:42:42:42:0${id} \
+      -kernel $ctxdir/data/$host/kernel -initrd $ctxdir/data/$host/initrd-v2 -vga qxl \
+      -hda $ctxdir/data/$host/disk.raw &
+    echo $! >$ctxdir/data/$host/pid
+    ((++id))
+  done
+  info "$(ls $ctxdir/data/*/pid|wc -w) host(s) have been started"
+}
+# # # # # # # #
+
+source .common
+prereqs
+prereqs_qemu
+check_conf
+fresh_start
+#unlock_store
+trap clean SIGINT SIGTERM SIGKILL
+declare -A hosts
+setup_network_qemu
+get_hosts
+get_parts
+run_qemu
+create_kubeconfig
+clean
+