lxc codes initialization

.gitignore

@@ -1 +1,2 @@
-.idea
+.idea
+/rejuvenation/setup/virtualbox/*.ova

rejuvenation/machine_resources_monitoring/processes/LxcProcessMonitoring.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+# Script to continuously monitor an LXC container process and log resource usage to a CSV file
+
+VM_NAME="debian12"
+log_file="logs/lxc_monitoring-${VM_NAME}.csv"
+mkdir -p logs
+echo "CPU;MEM;VMRSS;VSZ;Threads;Swap;Date_Time" > "$log_file"
+
+while true; do
+  pid=$(lxc-info -n "$VM_NAME" -pH)
+
+  date_time=$(date +%d-%m-%Y-%H:%M:%S)
+
+  if [ -n "$pid" ]; then
+    data=$(pidstat -u -h -p $pid -T ALL -r 1 1 | sed -n '4p')
+    thread=$(cat /proc/"$pid"/status | grep Threads | awk '{print $2}')
+    cpu=$(echo "$data" | awk '{print $8}')
+    mem=$(echo "$data" | awk '{print $14}')
+    vmrss=$(echo "$data" | awk '{print $13}')
+    vsz=$(echo "$data" | awk '{print $12}')
+    swap=$(cat /proc/"$pid"/status | grep VmSwap | awk '{print $2}')
+
+    echo "$cpu;$mem;$vmrss;$vsz;$thread;$swap;$date_time" >> "$log_file"
+  else
+    sleep 1
+    echo "0;0;0;0;0;0;$date_time" >> "$log_file"
+  fi
+done

rejuvenation/setup/lxc/Dependencies.sh

@@ -0,0 +1,81 @@
+#!/usr/bin/env bash
+
+# ############################## IMPORTS #############################
+source ../../machine_resources_monitoring/general_dependencies.sh
+# ####################################################################
+
+# SYSTEM_UPDATE()
+# DESCRIPTION:
+# Attempts to update the host's repositories and system apps
+SYSTEM_UPDATE() {
+  sudo apt-get update && sudo apt-get upgrade -y
+} 
+
+INSTALL_UTILS() {
+  echo "Instalando utilitários necessários: lxc-templates e bridge-utils..."
+  if sudo apt-get install lxc-templates bridge-utils -y; then
+    echo "Utilitários instalados com sucesso."
+  else
+    echo "Erro ao instalar utilitários." >&2
+    exit 1
+  fi
+}
+
+# LXC_INSTALL()
+# DESCRIPTION:
+# Install LXC if it's not installed
+LXC_INSTALL() {
+  if ! dpkg -l lxc | grep -q '^ii'; then
+    echo "LXC não está instalado, instalando..."
+    if ! sudo apt-get install lxc lxd lxd-client -y; then
+      echo -e "\nERRO: Erro ao tentar instalar o LXC/LXD\n" >&2
+      exit 1
+    fi
+    echo -e "\nLXC/LXD instalado com sucesso, inicializando LXD...\n"
+    INITIALIZE_LXD
+  else
+    echo "LXC/LXD já está instalado, verificando configuração..."
+    INITIALIZE_LXD
+  fi
+}
+
+# INITIALIZE_LXD()
+# DESCRIPTION:
+# Initialize LXD with a default storage pool and network
+INITIALIZE_LXD() {
+  # Check if a default storage pool exists
+  if ! sudo lxc storage list | grep -q "default"; then
+    sudo lxc storage create default dir
+  fi
+
+  # Check if a default NAT network exists
+  if ! sudo lxc network list | grep -q "lxdbr0"; then
+    sudo lxc network create lxdbr0 ipv4.address=auto ipv4.nat=true ipv6.address=none ipv6.nat=false
+  fi
+
+  echo "LXD configurado com storage pool padrão e rede NAT."
+}
+
+# INSTALL_DEPENDENCIES()
+# DESCRIPTION:
+# Starts dependency checking and installs dependencies requirements
+INSTALL_DEPENDENCIES() {
+  if [[ -f /etc/os-release ]]; then
+    . /etc/os-release
+  else
+    echo "Não foi possível determinar a distribuição do sistema."
+    exit 1
+  fi
+
+  if [ $ID = "debian" ]; then
+    SYSTEM_UPDATE
+    INSTALL_GENERAL_DEPENDENCIES
+    LXC_INSTALL
+    echo -e "\nInstalações completas\n"
+  else
+    echo "ERRO: Este script é apenas para Debian."
+    exit 1
+  fi
+}
+
+INSTALL_DEPENDENCIES

rejuvenation/setup/lxc/SetupVm.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+
+# ############################## IMPORTS #############################
+source ../../virtualizer_functions/LxcManager.sh
+# ####################################################################
+
+readonly VM_NAME="vmDebian"
+ISO_PATH="/software-aging/debian-12.5.0-arm64-netinst.iso"
+STORAGE_POOL="default"
+
+# FUNCTION=CREATE_VM()
+# DESCRIPTION:
+# Limits.cpu and limits.memory - configure cpu and memory limit
+# Disk source - adds and installation disk to the VM
+CREATE_VM() {
+  if lxc list | grep -q "$VM_NAME"; then
+    echo "$VM_NAME já existe. Parando a função."
+    return
+  fi
+
+  # Check if the storage pool exists
+  if ! lxc storage list | grep -q "$STORAGE_POOL"; then
+    echo "Storage pool '$STORAGE_POOL' não encontrado. Criando..."
+    lxc storage create "$STORAGE_POOL" dir
+  fi
+
+  # Create VM and configure
+  lxc init "$VM_NAME" --empty --vm --profile default -s "$STORAGE_POOL"
+  lxc config device add "$VM_NAME" root disk pool="$STORAGE_POOL" path=/
+  lxc config device add "$VM_NAME" iso disk source="$ISO_PATH" boot.priority=10
+  lxc config set "$VM_NAME" limits.cpu=2 limits.memory=512MB
+
+  lxc start "$VM_NAME"
+  echo "$VM_NAME iniciada com a ISO $ISO_PATH"
+}
+
+START_VM() {
+  lxc start "$VM_NAME"
+}
+
+STOP_VM() {
+  lxc stop "$VM_NAME"
+}
+
+DELETE_VM() {
+  lxc delete "$VM_NAME" --force
+}
+
+RESTART_VM() {
+  STOP_VM
+  sleep 5
+  START_VM
+}
+
+SETUP_LXC_VM() {
+  CREATE_VM
+  START_VM
+}
+
+SETUP_LXC_VM

rejuvenation/virtualizer_functions/LxcManager.sh

@@ -0,0 +1,119 @@
+#!/usr/bin/env bash
+
+######################################## LXC FUNCTIONS ########################################
+# Universidade Federal do Agreste de Pernambuco                                               #  
+# Uname Research Group                                                                        #
+#                                                                                             #
+# ABOUT:                                                                                      #
+# utilities for managing LXC virtual machines                                                 #
+###############################################################################################
+
+VM_NAME="vmDebian"
+
+START_VM() {
+  lxc start "$VM_NAME"
+}
+
+STOP_VM() {
+  lxc stop "$VM_NAME"
+}
+
+DELETE_VM() {
+  lxc delete "$VM_NAME" --force
+}
+
+# FUNCTION=GRACEFUL_REBOOT()
+# DESCRIPTION:
+#   Graceful reboot by turning vm off and on again
+GRACEFUL_REBOOT() {
+  STOP_VM
+  sleep 5
+  START_VM
+}
+
+# FUNCTION=FORCED_REBOOT()
+# DESCRIPTION:
+#   Forcibly reboot the virtual machine
+FORCED_REBOOT() {
+  lxc restart "$VM_NAME"
+}
+
+CREATE_DISKS() {
+  local count=1
+  local disks_quantity="$1"     
+  local allocated_disk_size="$2"
+
+  mkdir -p ./disks_lxc
+
+  while [[ "$count" -le "$disks_quantity" ]]; do
+    local disk_path="./disks_lxc/disk$count.img"
+    truncate -s "$allocated_disk_size" "$disk_path"
+    echo "Disco $disk_path criado com tamanho $allocated_disk_size."
+    ((count++))
+  done
+}
+
+REMOVE_DISKS() {
+  local disk_files=(./disks_lxc/*.img)
+
+  for disk_file in "${disk_files[@]}"; do
+    if [[ -f "$disk_file" ]]; then
+      echo -e "\n--->> Deletando o disco: $disk_file \n"
+      rm -f "$disk_file"
+      if [[ -f "$disk_file" ]]; then
+        echo -e "Erro: Falha ao deletar o disco: $disk_file \n"
+      else
+        echo "Disco $disk_file deletado com sucesso."
+      fi
+    fi
+  done
+}
+
+# FUNCTION=ATTACH_DISK()
+# DESCRIPTION:
+# Attaches disks to virtual machine
+#
+# PARAMETERS:
+# disk_path = $1
+# target = $2
+ATTACH_DISK() {
+  local disk_path="$1"
+  local target="$2"
+
+  if [[ -z "$disk_path" || -z "$target" ]]; then
+    echo "ERRO: Parâmetros ausentes para anexar o disco."
+    return 1
+  fi
+
+  if [[ ! -f "$disk_path" ]]; then
+    echo "ERRO: Arquivo de disco não encontrado em $disk_path."
+    return 1
+  fi
+
+  if lxc config device add "$VM_NAME" "$VM_NAME-disk" disk source="$disk_path" path="$target"; then
+    echo "Disco anexado com sucesso ao alvo $target."
+  else
+    echo "ERRO: Falha ao anexar o disco ao alvo $target."
+  fi
+}
+
+# FUNCTION=DETACH_DISK()
+# DESCRIPTION:
+#   Detach disks to virtual machine
+#
+# PARAMETERS:
+#   target = $1  #Name of the device to detach
+DETACH_DISK() {
+  local target="$1"
+
+  if [[ -z "$target" ]]; then
+    echo "ERRO: Parâmetro ausente para desanexar o disco."
+    return 1
+  fi
+
+  if lxc config device remove "$VM_NAME" "$device_name"; then
+    echo "Disco desanexado com sucesso do dispositivo $device_name."
+  else
+    echo "ERRO: Falha ao desanexar o disco do dispositivo $device_name."
+  fi
+}

rejuvenation/workloads/LxcWorkload.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+######################################## LXC - WORKLOAD #######################################
+# ABOUT:                                                                                      #
+#   used to simulate workload on (LXC) virtualization infrastructure                          #
+#                                                                                             #
+# WORKLOAD TYPE:                                                                              #
+#   DISKS                                                                                     #
+###############################################################################################
+
+# ####################### IMPORTS #######################
+source ./virtualizer_functions/LxcManager.sh
+# #######################################################
+
+readonly wait_time_after_attach=10
+readonly wait_time_after_detach=10
+
+LxcWorkloads() {
+  local count_disks=1
+  local max_disks=50
+  local disk_path="path/to/your/lxc/disks/disk"
+
+  while true; do
+    # attach
+    for port in {1..3}; do
+      local target="/mnt/disk$port"
+      ATTACH_DISK "${disk_path}${count_disks}.img" "$port"
+
+      if [[ "$count_disks" -eq "$max_disks" ]]; then
+        count_disks=1
+      else
+        ((count_disks++))
+      fi
+      sleep $wait_time_after_attach
+    done
+
+    # detach
+    for port in {1..3}; do
+      DETACH_DISK "disk$port"
+      sleep $wait_time_after_detach
+    done
+  done
+}
+
+LxcWorkloads