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-rw-r--r--others/vm.sh316
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diff --git a/others/vm.sh b/others/vm.sh
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+#!/bin/bash
+
+help(){
+ echo -e "\n$0
+ info
+ create\n -vcpu\n -ram \n -disk \n -ssh-keys-dir \n -add-disk-block\n -public-ssh-port
+ manage\n -start\n -shutdown\n -reboot\n -kill\n -erase
+ disk\n -attach\n -detach\n -resize\n"
+ exit 1
+}
+
+case "$1" in
+ "create")
+ if [[ $# -lt 2 ]]; then
+ echo ""
+ echo -e "$0 $1 [VM_NAME]"
+ echo -e "default: -vcpu 8 -ram 8 -disk 60 --ssh-keys-dir keys/"
+ echo -e "args[GB]:\n -vcpu\n -ram \n -disk \n -ssh-keys-dir \n -add-disk-block\n -public-ssh-port)"
+ echo ""
+ exit 1
+ fi
+
+ VM_NAME=$2
+ VCPU=8
+ RAM_GB=8000 #memory is noted as mb in the virt-install program
+ DISK_GB=64
+ SSH_KEYS_DIR="keys/"
+ DISK_BLOCK_GB=0
+ PSP=${PSP:-0}
+
+ while [[ $# -gt 0 ]]; do
+ case "$1" in
+ create)
+ shift 2
+ ;;
+ -vcpu)
+ VCPU=$2
+ shift 2
+ ;;
+ -ram)
+ RAM_GB=$(($2*1000))
+ shift 2
+ ;;
+ -disk)
+ DISK_GB=$2
+ shift 2
+ ;;
+ -ssh-keys-dir)
+ SSH_KEYS_DIR=$2
+ shift 2
+ ;;
+ -add-disk-block)
+ DISK_BLOCK_GB=$2
+ shift 2
+ ;;
+ -public-ssh-port)
+ PSP=$2
+ shift 2
+ ;;
+ *)
+ echo "Unknown argument: $1"
+ exit 1
+ ;;
+ esac
+ done
+ download_url="https://download.rockylinux.org/pub/rocky/9.3/images/x86_64/Rocky-9-GenericCloud-LVM-9.3-20231113.0.x86_64.qcow2"
+ dir_path="/var/lib/libvirt/images/"
+ src_file="/var/lib/libvirt/images/Rocky9.3.qcow2"
+ seed_iso="/var/lib/libvirt/images/seed.iso"
+ packages=("nc" "htop" "wireguard-tools" "bind-utils" "tmux" "net-tools" "curl" "mlocate" "dnsmasq" "qemu-kvm" "libvirt" "libvirt-client" "bridge-utils" "virt-install" "virt-manager" "genisoimage")
+ NEW_IMG_PATH="/var/lib/libvirt/images/${VM_NAME}.qcow2"
+ XML_PATH="/tmp/${VM_NAME}.xml"
+ DISK_BLOCK_GB_BASE_PATH="/var/lib/libvirt/images/${VM_NAME}-vm-disks/"
+ DISK_BLOCK_GB_PATH="${DISK_BLOCK_GB_BASE_PATH}${VM_NAME}-vda-${DISK_BLOCK_GB}G.qcow2"
+ ssh_private=$(cat /home/s22/man1)
+
+ function check_package_installed() {
+ local package_name=$1
+ rpm -q "$package_name" &> /dev/null
+ }
+
+ for package in "${packages[@]}"; do
+ if ! check_package_installed "$package"; then
+ #echo "Downloading packages..."
+ sudo dnf install -y "$package" &> /dev/null
+ fi
+ done
+
+ [ ! -d $dir_path ] && mkdir -p $dir_path &> /dev/null
+ [ ! -f "$src_file" ] && (wget -O "$src_file" "$download_url" &> /dev/null || { echo "Failed to download Rocky"; exit 1; })
+
+ echo -e "#cloud-config\nusers:\n - name: root\n ssh-authorized-keys:" > user-data
+
+ for key in "$SSH_KEYS_DIR"/*.pub; do
+ echo " - $(cat "$key")" >> user-data
+ done
+
+ echo " sudo: ['ALL=(ALL) NOPASSWD:ALL']
+ groups: sudo
+ shell: /bin/bash" >> user-data
+
+ if [ "$PSP" -ne 0 ]; then
+ echo "write_files:" >> user-data
+ echo " - path: /root/man1" >> user-data
+ echo " content: |" >> user-data
+ while read -r line; do
+ echo " $line" >> user-data
+ done <<< "${ssh_private}"
+ fi
+
+ echo 'runcmd:' >> user-data
+ #echo ' - [ /usr/bin/wget, "http://example.com/file", -O, /tmp/examplefile ]' >> user-data
+ #echo ' - touch /root/test1.txt' >> user-data
+ if [ "$DISK_BLOCK_GB" -ne 0 ]; then
+ echo "echo to disksetup in vm"
+ echo "vm name 1 ${VM_NAME}"
+ echo ' - echo "#!/bin/bash" > /root/disk-setup.sh' >> user-data
+ # echo ' - echo "sleep 40;" >> /root/disk-setup.sh' >> user-data
+ echo " - echo \"DISK='/dev/vda'; MOUNT_PATH='/home/${VM_NAME}-vda-${DISK_BLOCK_GB}G';\" >> /root/disk-setup.sh" >> user-data
+ echo " - echo '[ ! -d \$MOUNT_PATH ] && mkdir -p \$MOUNT_PATH;' >> /root/disk-setup.sh" >> user-data
+ echo " - echo 'blkid | grep -q \$DISK || mkfs.ext4 \$DISK;' >> /root/disk-setup.sh" >> user-data
+ echo " - echo 'grep -q \$DISK /etc/fstab || echo \"\$DISK \$MOUNT_PATH ext4 defaults,nofail 0 0\" >> /etc/fstab;' >> /root/disk-setup.sh" >> user-data
+ echo ' - echo "mount -a;" >> /root/disk-setup.sh' >> user-data
+ echo ' - echo "systemctl daemon-reload" >> /root/disk-setup.sh' >> user-data
+ echo ' - chmod +x /root/disk-setup.sh' >> user-data
+ echo ' - /root/disk-setup.sh' >> user-data
+ echo ' - rm -f /root/disk-setup.sh' >> user-data
+ fi
+
+ if [ "$PSP" -ne 0 ]; then
+ echo ' - chmod 600 /root/man1' >> user-data
+ #kill ssh and reconnect every 4 hours
+ ##echo " - (echo \"0 */4 * * * PIDS=\\\$(pgrep -f \\\"ssh.*root@64.176.179.97\\\"); if [ -n \\\"\\\${PIDS}\\\" ]; then kill \\\${PIDS}; fi; /usr/bin/ssh -fN -i /root/man1 -R ${PSP}:localhost:22 -o StrictHostKeyChecking=no root@64.176.179.97\") | crontab -" >> user-data
+ echo " - (echo \"* * * * * /root/initial.sh\") | crontab -" >> user-data
+ echo " - echo 'PIDS=\$(pgrep -f \"ssh.*root@64.176.179.97\"); if [ -z \"\${PIDS}\" ]; then /usr/bin/ssh -fN -i /root/man1 -R ${PSP}:localhost:22 -o StrictHostKeyChecking=no root@64.176.179.97; fi' > /root/initial.sh" >> user-data
+ echo " - chmod +x /root/initial.sh" >> user-data
+ echo " - /root/initial.sh" >> user-data
+ fi
+
+ #nofail is present in the fstab which means that boot will continue even if it fails to mount
+ echo ' - growpart /dev/sda 4 ' >> user-data #do note that restart is required for the system to register the increased disk size
+ echo ' - sudo lvresize -l +100%FREE /dev/rocky/lvroot' >> user-data
+ echo ' - sudo dnf install -y epel-release dnf-utils' >> user-data
+ echo ' - sudo dnf install -y nc xclip tmux htop tar tree wget curl mlocate nano vim unzip net-tools git python3 python3-pip make'>> user-data
+ echo ' - touch /root/runcmd_done' >> user-data
+
+ echo -e "instance-id: iid-ihatecs\nlocal-hostname: cloudimg" > meta-data
+
+ genisoimage -output "$seed_iso" -volid cidata -joliet -rock user-data meta-data &> /dev/null || { echo "Failed to create seed.iso."; exit 1; }
+
+ cp $src_file $NEW_IMG_PATH &> /dev/null || { echo "Failed to create a new image."; exit 1; }
+
+ if virsh list --all | grep -q "$VM_NAME"; then
+ echo -e "\n$VM_NAME already exist. Delete it using \n$0 manage -erase $VM_NAME\nExiting..."
+ exit 1
+ fi
+
+ sudo virt-install --name $VM_NAME \
+ --vcpus $VCPU \
+ --ram $RAM_GB \
+ --disk path=$NEW_IMG_PATH,size=$DISK_GB,format=qcow2 \
+ --disk path=$seed_iso,device=cdrom \
+ --os-type linux \
+ --os-variant rhl9 \
+ --virt-type kvm \
+ --graphics none \
+ --network bridge=virbr0,model=virtio \
+ --print-xml > $XML_PATH || { echo "Failed to print XML."; exit 1; }
+
+ sudo virsh define $XML_PATH &> /dev/null || { echo "Failed to define the new VM."; exit 1; }
+
+ sudo qemu-img resize $NEW_IMG_PATH +$DISK_GB"G" #&> /dev/null
+
+ virsh start $VM_NAME
+ echo ""
+
+ if [ $DISK_BLOCK_GB -ne 0 ]; then
+ mkdir -p $DISK_BLOCK_GB_BASE_PATH
+ qemu-img create -f qcow2 $DISK_BLOCK_GB_PATH "${DISK_BLOCK_GB}G"
+ virsh attach-disk $VM_NAME $DISK_BLOCK_GB_PATH vda --cache none --subdriver qcow2
+ fi
+
+ message="waiting 29s to begin finding ip address..."
+ duration=29
+ for ((i=$duration; i>=1; i--)); do
+ printf "\r%s%2ds" "$message" $i
+ sleep 1
+ done
+ echo
+
+ while true; do
+ OUTPUT=$($0 info | grep "$VM_NAME")
+ if [[ "$OUTPUT" != "" ]]; then
+ IP_ADDRESS=$(echo "$OUTPUT" | grep -oP '\d+\.\d+\.\d+\.\d+')
+ # If IP address is found and is not empty
+ if [[ ! -z "$IP_ADDRESS" ]]; then
+ echo -e "\nIP address of $VM_NAME is:\n$IP_ADDRESS"
+ break
+ else
+ echo "IP address for $VM_NAME not found. Retrying in 1 second..."
+ sleep 1
+ fi
+ else
+ echo "$VM_NAME not found. Exiting..."
+ exit 1
+ fi
+ done
+
+ #do take note that df -h will not reflect until reboot
+
+ ;;
+ "manage")
+ if [[ $# -lt 2 ]]; then
+ echo ""
+ echo -e "$0 $1 arg [VM_1] [VM_2] [VM_3] \n$0 $1 arg --all"
+ echo -e "args:\n -start\n -shutdown\n -kill\n -erase "
+ echo ""
+ exit 1
+ fi
+
+ arg=$2
+ shift 2
+
+ if [[ "$1" == "--all" ]]; then
+ vms=$(virsh list --all --name) # List all running VMs by name
+ set -- $vms # Set the positional parameters to the VM names
+ fi
+
+ case $arg in
+ "-shutdown")
+ for vm in "$@"; do
+ virsh shutdown "$vm" > /dev/null 2>&1
+ printf "%-50s%10s\n" "Shutting down $vm..." $([[ $? -eq 0 ]] && echo "Successful" || echo "Failed")
+ done
+ ;;
+ "-kill")
+ for vm in "$@"; do
+ virsh destroy "$vm" > /dev/null 2>&1
+ printf "%-50s%10s\n" "Destroying $vm..." $([[ $? -eq 0 ]] && echo "Successful" || echo "Failed")
+ done
+ ;;
+ "-erase")
+ echo -e "\nWARNING: THIS IS IRREVERSIBLE. Sleeping for 10 seconds. Ctrl-C to stop. WARNING.\n"
+ sleep 10
+ echo -e "\nErasing image(s) from /var/lib/libvirt/images/\n"
+ for vm in "$@"; do
+ virsh destroy "$vm" > /dev/null 2>&1
+ virsh undefine "$vm" --remove-all-storage > /dev/null 2>&1
+ printf "%-50s%10s\n" "Removing $vm..." $([[ $? -eq 0 ]] && echo "Successful" || echo "Failed")
+ done
+ ;;
+ "-start")
+ for vm in "$@"; do
+ virsh start "$vm" > /dev/null 2>&1
+ printf "%-50s%10s\n" "Starting $vm..." $([[ $? -eq 0 ]] && echo "Successful" || echo "Failed")
+ done
+ ;;
+ "-reboot")
+ for vm in "$@"; do
+ virsh shutdown "$vm" > /dev/null 2>&1
+ virsh start "$vm" > /dev/null 2>&1
+ printf "%-50s%10s\n" "Rebooting $vm..." $([[ $? -eq 0 ]] && echo "Successful" || echo "Failed")
+ done
+ ;;
+ *)
+ echo "Unknown argument: $arg"
+ exit 1
+ ;;
+ esac
+ ;;
+ "info")
+ printf "%-4s %-10s %-15s %-10s %-10s %-6s %-8s %-12s\n" "Id" "Name" "IP" "State" "Network" "vCPUs" "RAM(GB)" "Disk(GB)"
+ printf "%-4s %-10s %-15s %-10s %-10s %-6s %-8s %-12s\n" "----" "----------" "---------------" "----------" "----------" "-----" "-------" "-----------"
+
+ vms=$(virsh list --name --all)
+
+ id=1
+ for vm in $vms; do
+ # Get the MAC address of the VM
+ mac=$(virsh dumpxml $vm | grep "mac address" | awk -F\' '{ print $2}')
+
+ # Get the network name
+ net=$(virsh dumpxml $vm | grep "<source network" | awk -F\' '{print $2}')
+
+ # Assign "default" if no network name is found
+ if [ -z "$net" ]
+ then
+ net="default"
+ fi
+
+ # Get the IP address of the VM
+ ip=$(virsh net-dhcp-leases $net | grep $mac | awk '{print $5}' | cut -f1 -d'/')
+
+ # Get the state of the VM
+ state=$(virsh domstate $vm)
+
+ # Get the vCPUs, RAM and Disk details of the VM
+ vcpus=$(virsh dominfo $vm | grep "CPU(s)" | awk '{print $2}')
+
+ ram=$(bc <<< "scale=2; $(virsh dominfo $vm | grep "Max memory" | awk '{print $3}')/1000000")
+
+ # Use du to get the size of the disk file in GB
+ disk=$(du -sk /var/lib/libvirt/images/${vm}.qcow2 | awk '{ printf "%.2f", $1/1024/1024 }' )
+
+ printf "%-4s %-10s %-15s %-10s %-10s %-6s %-8s %-12s\n" "$id" "$vm" "$ip" "$state" "$net" "$vcpus" "$ram" "$disk"
+ id=$((id+1))
+ done
+ exit 1
+ ;;
+ *)
+ help
+ exit 1
+ ;;
+esac
+
+
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