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#!/bin/bash
# functions.sh
# Logger functions for all toolkits postinstalls

#
# Globals
##########################################################

RAM_SIZE=$(awk '/^DirectMap.*kB/ { sum+=$2} END {memMb=sum / 1024; printf "%.0f\n", memMb}' /proc/meminfo)
RAM_FUDGE=200
KCARE_CONTACT='kernelcare-issues@liquidweb.com'

#
# functions
##########################################################

function set_firewalld_backend() {
  sed -i 's/FirewallBackend=.*/FirewallBackend=iptables/g' /etc/firewalld/firewalld.conf
  systemctl restart firewalld.service
}

function firewalld_allow_http() {
  firewall-cmd --zone=public --add-service=http
  firewall-cmd --zone=public --add-service=https
}

function set_update_cron_debuntu() {
  logger "START" "Install daily apt-get update/upgrade cron"
  local MINUTE=$((( RANDOM % 60 )))
  local HOUR=$((( RANDOM % 24 )))
  cat << EOFUPDATES > /etc/cron.d/liquidweb_pkg_updates
$MINUTE $HOUR * * * root export DEBIAN_FRONTEND='noninteractive'; apt-get update; apt-get -y upgrade
EOFUPDATES
  chmod 755 /etc/cron.d/liquidweb_pkg_updates
  logger "END" "Install daily apt-get update/upgrade cron"
}

function set_update_cron_centos() {
  logger "START" "Install daily yum update/upgrade cron"
  local MINUTE=$((( RANDOM % 60 )))
  local HOUR=$((( RANDOM % 24 )))
  cat << EOFUPDATES > /etc/cron.d/liquidweb_pkg_updates
$MINUTE $HOUR * * * root yum clean all > /dev/null 2>&1; yum update -y > /dev/null 2>&1
EOFUPDATES
  chmod 644 /etc/cron.d/liquidweb_pkg_updates
  logger "END" "Install daily yum update/upgrade cron"
}

function set_csf_update_cron_centos() {
  logger "START" "Install daily csf update/upgrade cron"
  local MINUTE=$((( RANDOM % 60 )))
  local HOUR=$((( RANDOM % 24 )))
  cat << EOFUPDATES > /etc/cron.d/csf_update
$MINUTE $HOUR * * * root /usr/sbin/csf -u > /dev/null 2>&1
EOFUPDATES
  chmod 644 /etc/cron.d/csf_update
  logger "END" "Install daily csf update/upgrade cron"
}

function logger() {
  LOGDIR='/usr/local/lp/logs'
  LOGFILE="${LOGDIR}/postinstall.log"
  [[ ! -d ${LOGDIR} ]] && mkdir -p ${LOGDIR}

  [ -z "$1" ] || [ -z "$2" ] && {
    echo "FATAL: logger called with invalid arguments" >> ${LOGFILE}
    exit 1
  }

  echo "[$1 STEP:] $2" >> ${LOGFILE}
  shopt -s nocasematch
  [[ $1 = "END" ]] && echo -e "...\n..." >> ${LOGFILE}
  shopt -u nocasematch

}

function run_and_log() {
  [ -z "$1" ] && {
    echo "run_and_log() missing an argument"
    exit 1
  }
  logger "START" "[$1]"
  ((time $1 1>&3 >> ${LOGFILE} ) 2>&1 | awk '/^real[\t]+[0-9]+m[0-9]+\.[0-9]+s/ {print "[END STEP:] " $2}' 1>&2 >> ${LOGFILE} ) 3>&1
  echo -e "...\n..." >> ${LOGFILE}
}

function fetch_domainname_from_fqdn() {
  # So this isn't ideal; but probably good enough for our use case
  # here. What im doing is just returning everything after the first
  # dot as the domain name. If this ends up not meeting our use case
  # someday, then I suggest we parse something like this:
  #
  #   https://publicsuffix.org/list/effective_tld_names.dat
  #
  echo $(echo ${1} | sed 's/[^.]*.//')
}

function wait_for_mysql_pid() {
  local -i loop_pass_mysql_pid
  local -i timeout

  if [ -z "$1" ]; then
    timeout=600 # 10 minutes, default
  else
    timeout=$1
  fi

  if which pgrep > /dev/null 2>&1 ; then
    loop_pass_mysql_pid=0
    while ! pgrep mysqld > /dev/null 2>&1 ; do
      if [[ ${loop_pass_mysql_pid} -ge ${timeout} ]]; then
        logger "ERROR" "Timeout of [${timeout}] seconds; MySQL PID"
        # Met timeout, return indicating failure.
        return 1
      fi
      sleep 1
      loop_pass_mysql_pid=$((loop_pass_mysql_pid + 1))
    done
    # If we got this far, MySQL is running. Indicate this.
    return 0
  else
    logger "ERROR" "Unable to determine if mysql is running. Is pgrep installed?"
    return 1
  fi
}

function fetch_mysql_pw() {
  mysql_pw_raw=$(awk '/^password=/ { print substr($0,10) }' /root/.my.cnf)

  mysql_pw=$(strip_string_ini ${mysql_pw_raw})

  echo "${mysql_pw}"
}

function fetch_mysql_user() {
  mysql_user_raw=$(awk '/^user=/ { print substr($0,6) }' /root/.my.cnf)

  mysql_user=$(strip_string_ini ${mysql_user_raw})

  echo "${mysql_user}"
}

function strip_string_ini() {
  str=$1

  # *If* the string is between "s OR 's, remove them.
  [[ ${str:0:1}${str: -1} == '""' ]] || [[ ${str:0:1}${str: -1} == "''" ]] && {
    # Remove first char
    str=$(echo "${str/${str:0:1}/}")

    # Remove last char
    str=$(echo ${str%?})
  }

  echo "${str}"
}

function verify_root_my_cnf() {
  [ -e '/root/.my.cnf' ] && {
    return 0
  } || {
    logger "ERROR" "[/root/.my.cnf] does not exist"
    return 1
  }
}

function wait_for_mysql() {
  local -i loop_pass_mysql_conn
  local -i timeout

  if [ -z "$1" ]; then
    timeout=600 # 10 minutes, default
  else
    timeout=$1
  fi

  wait_for_mysql_pid ${timeout}
  if [ $? -eq 0 ]; then
    # mysql is running, verify its accepting connections.
    if which mysqladmin > /dev/null 2>&1 ; then

      mysqladmin=$(fetch_mysqladmin_prefix)
      [[ -z $mysqladmin ]] && return 1

      while ! $mysqladmin proc > /dev/null 2>&1 ; do
        if [[ ${loop_pass_mysql_conn} -ge ${timeout} ]]; then
          logger "ERROR" "Timeout of [${timeout}] seconds; MySQL connection"
          # Met timeout, return indicating failure.
          return 1
        fi
        sleep 1
        loop_pass_mysql_conn=$((loop_pass_mysql_conn + 1))
      done
      # If we made it here, mysql is running; and accepting connections.
      # Give the all clear.
      return 0
    else
      logger "ERROR" "mysqladmin is not in the PATH"
      return 1
    fi
  else
    return 1
  fi
}

function fetch_mysqladmin_prefix() {
  # When postinstall is ran from ttyS0 (serial console) /root/.my.cnf i
  # not read by mysqladmin automatically like it is through a normal SSH
  # connection. Remedy this by parsing it manually and always invoking
  # mysqladmin with user/pw flags.

  [ verify_root_my_cnf ] || {
    return 1
  }

  mysql_pass=$(fetch_mysql_pw)
  mysql_user=$(fetch_mysql_user)

  echo "mysqladmin --password=${mysql_pass} --user=${mysql_user}"
}

function randomize_mysql_root_pw() {
  local -i timeout
  local MYSQL_ROOT_PASS

  if [ -z "$1" ]; then
    timeout=600 # 10 minutes, default
  else
    timeout=$1
  fi

  if [ -f '/root/TEMPLATE_DEF_CHANGE_ME' ]; then
    wait_for_mysql ${timeout}
    if [ $? -eq 0 ]; then
      logger "START" "Randomize template default MySQL root password"
      MYSQL_ROOT_PASS=`cat /dev/urandom| tr -dc 'a-zA-Z0-9' | head -c 13`

      mysqladmin=$(fetch_mysqladmin_prefix)
      [[ -z $mysqladmin ]] && return 1

      $mysqladmin password ${MYSQL_ROOT_PASS} &>/dev/null
      # Place /root/.my.cnf for later postinstall modification.
      cat << EOF > /root/.my.cnf
[client]
password=${MYSQL_ROOT_PASS}
user=root
EOF
      chmod 600 /root/.my.cnf
      logger "END" "Randomize template default MySQL root password"
    else
      logger "ERROR" "MySQL not responding, unable to randomize MySQL root pw."
    fi
    # Remove it, so we only run on fresh create.
    rm -f /root/TEMPLATE_DEF_CHANGE_ME
  fi
}

# Installation instructions provided per rt#162949.
# Per above, this needs to be installed here because
# we need to have the assigned FQDN and IP(s) at time
# of installation.
function install_kcare_el() {
  logger "START" "Install kernelcare (EL)"
  [[ -e '/root/KCARE_TEMPLATE_IS_BUILDING' ]] && rm -f /root/KCARE_TEMPLATE_IS_BUILDING
  export KCARE_PATCH_SERVER=https://kernelcare.liquidweb.com/
  export KCARE_REGISTRATION_URL=https://kernelcare.liquidweb.com/admin/api/kcare
  export KCARE_MAILTO=${KCARE_CONTACT}
  run_and_log "wget -O /root/kernelcare-latest.x86_64.rpm http://patches.kernelcare.com/kernelcare-latest.x86_64.rpm"
  run_and_log "yum -y localinstall /root/kernelcare-latest.x86_64.rpm --nogpgcheck"
  run_and_log "rm -f /root/kernelcare-latest.x86_64.rpm"
  run_and_log "yum -y update kernelcare"
  # Bypass logger so the key isnt logged.
  kcarectl --register Y6n1V956wKGTv46u --register-autoretry
  run_and_log "kcarectl -u"
  logger "END" "Install kernelcare (EL)"
}

function install_kcare_ubuntu() {
  logger "START" "Install kernelcare (Ubuntu)"
  export KCARE_PATCH_SERVER=https://kernelcare.liquidweb.com/
  export KCARE_REGISTRATION_URL=https://kernelcare.liquidweb.com/admin/api/kcare
  export KCARE_MAILTO=${KCARE_CONTACT}
  run_and_log "wget -O /root/kernelcare-latest.deb http://patches.kernelcare.com/kernelcare-latest.deb"
  run_and_log "dpkg -i /root/kernelcare-latest.deb"
  run_and_log "rm -f /root/kernelcare-latest.deb"
  run_and_log "apt-get -y install --only-upgrade kernelcare"
  # Bypass logger so the key isnt logged.
  kcarectl --register Y6n1V956wKGTv46u --register-autoretry
  run_and_log "kcarectl -u"
  logger "END" "Install kernelcare (Ubuntu)"
}

# Replace the given string in the given file.
function replace_string_in_file() {
  local file=$1
  local match_string=$2
  local string_to_insert=$3
  [[ -e ${file} ]] && {
    logger "START" "Replace match of [${match_string}] with [${string_to_insert}] in [${file}]"
    local file_orig=$(<${file})
    local file_new=''
    while read -r line; do
      [[ ${line} =~ ${match_string} ]] && {
        file_new+="${string_to_insert}
"
      } || {
        file_new+="${line}
"
      }
    done <<< "${file_orig}"
    echo "${file_new}" > ${file}
    logger "END" "Replace match of [${match_string}] with [${string_to_insert}] in [${file}]"
  } || {
    logger "WARNING" "Instructed to modify [${file}] but it doesn't exist"
  }
}

# This refreshes the softaculous license
function refresh_softaculous_license {
 logger "START" "Refresh Softaculous license"
 run_and_log "timeout 180s /usr/local/cpanel/3rdparty/bin/php /usr/local/cpanel/whostmgr/docroot/cgi/softaculous/cron.php"
 logger "END" "Refresh Softaculous license"
}

# This disables all emails softaculous sends to an end user.
function set_softaculous_enduser_emails_off() {
  replace_string_in_file '/usr/local/cpanel/whostmgr/docroot/cgi/softaculous/enduser/universal.php' 'off_email_link' "\$globals['off_email_link'] = 1;"
}

# Set softaculous from_email. Prevents emails from (unknown sender) when installing apps
# via Softaculous.
function set_softaculous_from_email() {
  replace_string_in_file '/usr/local/cpanel/whostmgr/docroot/cgi/softaculous/enduser/universal.php' 'from_email' "\$globals['from_email'] = 'root@${HOSTNAME}';"
}

function place_randomized_upcp_cron() {
  logger "START" "Place randomized upcp cron"
  [[ -z $(crontab -l|grep 'scripts/upcp --cron') ]] && {
    hour=$(awk -v seed=${RANDOM} 'BEGIN{srand(seed);print int(rand()*(23-0)) }')
    min=$(awk -v seed=${RANDOM} 'BEGIN{srand(seed);print int(rand()*(59-0)) }')
    { crontab -l -u root; echo "${min} ${hour} * * * /usr/local/cpanel/scripts/upcp --cron > /dev/null 2>&1"; } | crontab -u root -
  } || {
    logger "ERROR" "upcp --cron entry already exists!"
  }
  logger "END" "Place randomized upcp cron"
}

function install_cloudlinux {
  logger "START" "CloudLinux Registration"
  run_and_log "wget http://repo.cloudlinux.com/cloudlinux/sources/cln/cldeploy -O /root/cldeploy"
  run_and_log "/bin/sh /root/cldeploy -i"
  run_and_log "/usr/local/lp/temp/lw-cloudlinux-build-request"
	logger "END" "CloudLinux Registration"
}

function fix_passive_ftp {
  logger "START" "Fix passive FTP"
  if [ -f '/etc/pure-ftpd.conf' ]; then
    sed -i '/ForcePassiveIP/ s/^/#/' /etc/pure-ftpd.conf
    sed -i '/ForcePassiveIP/d' /var/cpanel/conf/pureftpd/main
    run_and_log "/scripts/restartsrv_pureftpd"
  else
    logger "WARNING" "pure-ftpd.conf not present, this is likely not a cPanel template"
  fi
  logger "END" "Fix passive FTP"
}

function enable_submission_plesk() {
  logger "START" "Enable submission port for postfix"
  run_and_log "/usr/local/psa/bin/mailserver --set-message-submission true"
  logger "END" "Enable submission port for postfix"
}

function remove_fail2ban() {
  logger "START" "Remove fail2ban"
  run_and_log "yum -y remove fail2ban"
  logger "END" "Remove fail2ban"
}

function lwadmin_reconcile {
  logger "START" "Running lwadmin_reconcile script"
  if [ -f "/usr/local/lp/bin/lwadmin_reconcile" ]; then
    run_and_log "/usr/local/lp/bin/lwadmin_reconcile"
  else
    logger "WARNING" "/usr/local/lp/bin/lwadmin_reconcile not present. lwauth package is likely not installed"
  fi
  logger "END" "Running lwadmin_reconcile script"
}

function prom_exporters_setup_mysql_user {
  logger "START" "PromExporters: Setting up MySQL user"
  if [[ -x /usr/local/lp/opt/exporters/scripts/setup_mysql_user.sh ]]; then
    if [[ -z ${HOME} ]]; then
      export HOME=/root
    fi
    run_and_log "/usr/local/lp/opt/exporters/scripts/setup_mysql_user.sh --force"
  fi
  logger "END" "PromExporters: Setting up MySQL user"
}

function install_lw-ef-cpanel {
  logger "START" "Installing lw-ef-cpanel"
  yum clean all && yum -y install lw-ef-cpanel
  logger "END" "Installing lw-ef-cpanel"
}

function set_memcached_conf {
  local dist=${1}
  local redhat_memcached_conf='/etc/sysconfig/memcached'
  [[ -z ${RAM_SIZE} ]] && {
    logger "WARNING" "set_memcached_conf() unable to determine RAM size; unable to tweak memcached configs"
    return
  }
  [[ ${dist} == 'wpopt' ]] && {
    [[ -f ${redhat_memcached_conf} ]] || {
      logger "WARNING" "set_memcached_conf() [${redhat_memcached_conf}] doesn't exist, cannot tweak memcached configs"
      return
    }
    local ram_configs=('4000' '8000')
    for ram_config in "${ram_configs[@]}"
    do
      local ram_lowest=$(( ${RAM_SIZE} - ${RAM_FUDGE} ))
      local ram_highest=$(( ${RAM_SIZE} + ${RAM_FUDGE} ))
      if [[ ${ram_config} -eq '4000' ]] ; then
        if [[ ${ram_config} -le ${ram_highest} ]] && [[ ${ram_config} -ge ${ram_lowest} ]]; then
          logger "START" "Apply memcached configs for 4GB"
          sed -i 's/CACHESIZE=.*/CACHESIZE="512"/g' ${redhat_memcached_conf}
          logger "END" "Apply memcached configs for 4GB"
          break
        fi
      elif [[ ${ram_config} -eq '8000' ]] ; then
        if [[ ${ram_config} -le ${ram_highest} ]] && [[ ${ram_config} -ge ${ram_lowest} ]]; then
          logger "START" "Apply memcached configs for 8GB"
          sed -i 's/CACHESIZE=.*/CACHESIZE="1024"/g' ${redhat_memcached_conf}
          logger "END" "Apply memcached configs for 8GB"
          break
        fi
      fi
    done
  }
}

function enable_exim_rbls {
  local changes=0
  [[ -n $(grep 'acl_spamhaus_rbl=0' /etc/exim.conf.localopts) ]] && {
    logger "START" "enable spamhaus exim RBL"
    run_and_log "sed -i 's/acl_spamhaus_rbl=0/acl_spamhaus_rbl=1/g' /etc/exim.conf.localopts"
    logger "END" "enable spamhaus exim RBL"
    local changes=1
  }
  [[ -n $(grep 'acl_spamcop_rbl=0' /etc/exim.conf.localopts) ]] && {
    logger "START" "enable spamcop exim RBL"
    run_and_log "sed -i 's/acl_spamcop_rbl=0/acl_spamcop_rbl=1/g' /etc/exim.conf.localopts"
    logger "END" "enable spamcop exim RBL"
    local changes=1
  }
  [[ ${changes} == 1 ]] && run_and_log "/scripts/buildeximconf"
}

function iw_set_php_upload_max() {
        sed -e 's|upload_max_filesize = 2M|upload_max_filesize = 40M|g' -i /etc/php.ini
        sed -e 's|upload_max_filesize = 2M|upload_max_filesize = 40M|g' -i /etc/opt/remi/php*/php.ini
}

function iw_set_php_post_max() {
        sed -e 's|post_max_size = 8M|post_max_size = 40M|g' -i /etc/php.ini
        sed -e 's|post_max_size = 8M|post_max_size = 40M|g' -i /etc/opt/remi/php*/php.ini
}

function cpanel_set_email() {
  sed -e "s/CONTACTEMAIL.*/CONTACTEMAIL ${EMAIL}/g" -i /etc/wwwacct.conf
}

function cpanel_set_nameservers() {
  sed -e '/^NS/d' -i /etc/wwwacct.conf
  echo "NS ns1.${DOMAIN_NAME}" >> /etc/wwwacct.conf
  echo "NS2 ns2.${DOMAIN_NAME}" >> /etc/wwwacct.conf
  echo "NSTTL 86400" >>  /etc/wwwacct.conf
}

function cpanel_set_addr() {
  INST_IP=$(ifconfig eth0| awk '/^\s+inet\s+/ {print $2}')
  sed -e '/^ADDR/d' -i /etc/wwwacct.conf
  echo "ADDR ${INST_IP}" >> /etc/wwwacct.conf
}

function cpanel_set_ethdev() {
  sed -e 's/ETHDEV.*/ETHDEV eth0/g' -i /etc/wwwacct.conf
}
function PSSI-365_tweaks() {
  whmapi1 --output=jsonpretty   set_tweaksetting   key='autodiscover_proxy_subdomains' value=1
  whmapi1 --output=jsonpretty   set_tweaksetting   key='conserve_memory' value=1

}
function set_fcgi_conf {
  PHP_INI=/usr/local/lib/php.ini
  PRE_VHOST2_CONF=/usr/local/apache/conf/includes/pre_virtualhost_2.conf
  logger "START" "Checking for ${PHP_INI} and ${PRE_VHOST2_CONF}"
  if [ -f "${PHP_INI}" ] && [ -f "${PRE_VHOST2_CONF}" ]; then
    logger "Notice" "${PHP_INI} & ${PRE_VHOST2_CONF} exist"
  else
    logger "ERROR" "${PHP_INI} & ${PRE_VHOST2_CONF} Not Found No Fcgid config to apply"
    return 1
  fi
  logger "END" "Checking for ${PHP_INI} and ${PRE_VHOST2_CONF}"
  [[ -z ${RAM_SIZE} ]] && {
    logger "WARNING" "set_fcgi_conf() unable to determine RAM size; unable to tweak fcgid configs"
    return
  }
  KNOWN_RAM_CONFIGS=('2000' '4000' '8000' '16000')
  for RAM_CONFIG in "${KNOWN_RAM_CONFIGS[@]}"
  do
    :
    RAM_LOWEST=$(( ${RAM_SIZE} - ${RAM_FUDGE} ))
    RAM_HIGHEST=$(( ${RAM_SIZE} + ${RAM_FUDGE} ))

    if [[ ${RAM_CONFIG} -eq '2000' ]] ; then
      if [[ ${RAM_CONFIG} -le ${RAM_HIGHEST} ]] && [[ ${RAM_CONFIG} -ge ${RAM_LOWEST} ]]; then
        logger "START" "Apply Fcgid configs for 2GB"
        run_and_log "sed -i 's/FcgidMaxProcesses.*/FcgidMaxProcesses 40/g' ${PRE_VHOST2_CONF}"
        run_and_log "sed -i 's/FcgidMaxProcessesPerClass.*/FcgidMaxProcessesPerClass 20/g' ${PRE_VHOST2_CONF}"
        logger "END" "Apply Fcgid configs for 2GB"
        logger "START" "Apply Zend OPcache configs for 2GB"
        run_and_log "sed -i 's/opcache.memory_consumption=.*/opcache.memory_consumption=64/g' ${PHP_INI}"
        logger "END" "Apply Zend OPcache configs for 2GB"
        break
      fi
    elif [[ ${RAM_CONFIG} -eq '4000' ]] ; then
      if [[ ${RAM_CONFIG} -le ${RAM_HIGHEST} ]] && [[ ${RAM_CONFIG} -ge ${RAM_LOWEST} ]]; then
        logger "START" "Apply Fcgid configs for 4GB"
        run_and_log "sed -i 's/FcgidMaxProcesses.*/FcgidMaxProcesses 80/g' ${PRE_VHOST2_CONF}"
        run_and_log "sed -i 's/FcgidMaxProcessesPerClass.*/FcgidMaxProcessesPerClass 40/g' ${PRE_VHOST2_CONF}"
        logger "END" "Apply Fcgid configs for 4GB"
        logger "START" "Apply Zend OPcache configs for 4GB"
        run_and_log "sed -i 's/opcache.memory_consumption=.*/opcache.memory_consumption=64/g' ${PHP_INI}"
        logger "END" "Apply Zend OPcache configs for 4GB"
        break
      fi
    elif [[ ${RAM_CONFIG} -eq '8000' ]] ; then
      if [[ ${RAM_CONFIG} -le ${RAM_HIGHEST} ]] && [[ ${RAM_CONFIG} -ge ${RAM_LOWEST} ]]; then
        logger "START" "Apply Fcgid configs for 8GB"
        run_and_log "sed -i 's/FcgidMaxProcesses.*/FcgidMaxProcesses 160/g' ${PRE_VHOST2_CONF}"
        run_and_log "sed -i 's/FcgidMaxProcessesPerClass.*/FcgidMaxProcessesPerClass 80/g' ${PRE_VHOST2_CONF}"
        logger "END" "Apply Fcgid configs for 8GB"
        logger "START" "Apply Zend OPcache configs for 8GB"
        run_and_log "sed -i 's/opcache.memory_consumption=.*/opcache.memory_consumption=64/g' ${PHP_INI}"
        logger "END" "Apply Zend OPcache configs for 8GB"
        break
      fi
    elif [[ ${RAM_CONFIG} -eq '16000' ]] ; then
      if [[ ${RAM_CONFIG} -le ${RAM_HIGHEST} ]] && [[ ${RAM_CONFIG} -ge ${RAM_LOWEST} ]]; then
        logger "START" "Apply Fcgid configs for 16GB"
        run_and_log "sed -i 's/FcgidMaxProcesses.*/FcgidMaxProcesses 320/g' ${PRE_VHOST2_CONF}"
        run_and_log "sed -i 's/FcgidMaxProcessesPerClass.*/FcgidMaxProcessesPerClass 160/g' ${PRE_VHOST2_CONF}"
        logger "END" "Apply Fcgid configs for 16GB"
        logger "START" "Apply Zend OPcache configs for 16GB"
        run_and_log "sed -i 's/opcache.memory_consumption=*./opcache.memory_consumption=64/g' ${PHP_INI}"
        logger "END" "Apply Zend OPcache configs for 16GB"
        break
      fi
    else
      logger "NOTICE" "No specific memcached/Fcgid config to apply for this RAM size [${RAM_SIZE}]mib. Known RAM sizes: [${KNOWN_RAM_CONFIGS[*]}]mib"
      break
    fi
  done
}

function install_lw-telegraf() {
  if [[ -f /etc/redhat-release ]]; then
    yum -y install lw-telegraf
  elif [[ -f /etc/debian_version ]]; then
    apt -y install lw-telegraf
  fi
}

function cpanel_apache_ssl_ciphers() {
  sed -e 's/"sslciphersuite" : ".*/"sslciphersuite" : "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384",/g' -i /etc/cpanel/ea4/ea4.conf
}

function disable_clamav() {
  FREEMEM=$(free |grep Mem:|awk '{print $2}')

  if [[ ${FREEMEM} -le 4000000 ]]; then
    whmapi1 configureservice service=clamd enabled=0 monitored=0 && systemctl disable clamd --now
  else
    echo "Greater than 4GB of RAM. Not disabling clamd."
  fi
}

function install_insight_el() {
  if [[ -f /etc/redhat-release ]]; then
    logger "START" "Install lw-insight (EL)"
	run_and_log "yum -y install lw-insight"
    logger "END" "Install lw-insight (EL)"
  fi
}