Cobbler Server：自动修改IP设定

By Adamhuan | 2018年6月11日

Cobbler Server所在的主机如果IP地址改掉了，那么Cobbler服务端也是需要做出相应变更的。

下面的脚本可以让你一键完成所有关于IP变更的配置：
使用方法：
auto_cobbler_change_ip.sh [新的IP地址]

如：
auto_cobbler.sh192.168.23.3

就好了。

代码脚本如下：

#!/bin/bash

# var
purpose_ip="$1"
purpose_ip_3slot=$(echo $purpose_ip | awk -F'.' '{print $1"."$2"."$3}')

# display
echo "Purpose IP = [$purpose_ip]"
echo "3 Slot is: [$purpose_ip_3slot]"

# function

function modify_file_by_search() {

  # var
  target_filename="$1"
  string_search="$2"
  split_by=$3
  string_purpose="$4"

  slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

  # display
  echo "=========================="
  echo "File: $target_filename"
  echo "Search: $string_search"
  echo "Split by: [$split_by]"
  echo "Purpose is = [$string_purpose]"
  echo "Slot number = [$slot_number]"

  # var by compute
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)
  string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')
  # display
  echo "Old content is --> [$string_content]"

  # do
  echo "-------"
  echo "do modify"
  sed -i "/$string_search/s/$string_content/$string_purpose/g" $target_filename

  # after
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | rev | cut -d' ' -f1 | rev)
  string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev |sed 's/.$//')

  echo "-------"
  echo "after modify"
  echo "Content is --> [$string_content]"


}

function modify_file_by_search_1() {

  # var
  target_filename="$1"
  #string_search="$2"
  #split_by=$3
  string_purpose="$2"

  slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

  # display
  echo "=========================="
  echo "File: $target_filename"
  #echo "Search: $string_search"
  #echo "Split by: [$split_by]"
  echo "Purpose is = [$string_purpose]"
  echo "Slot number = [$slot_number]"

  # var by compute
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)
  string_content=$(cat $target_filename | grep "subnet" | grep "netmask" | grep  "{" | awk '{print $2}' | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')
  # display
  echo "Old content is --> [$string_content]"

  # do
  echo "-------"
  echo "do modify"
  sed -i "/subnet/s/$string_content/$string_purpose/g" $target_filename

  # after
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | rev | cut -d' ' -f1 | rev)
  string_content=$(cat $target_filename | grep "subnet" | grep "netmask" | grep  "{" | awk '{print $2}' | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

  echo "-------"
  echo "after modify"
  echo "Content is --> [$string_content]"


}

function modify_file_by_search_2() {

  # var
  target_filename="$1"
  string_search="$2"
  #split_by=$3
  string_purpose="$3"

  slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

  # display
  echo "=========================="
  echo "File: $target_filename"
  echo "Search: $string_search"
  #echo "Split by: [$split_by]"
  echo "Purpose is = [$string_purpose]"
  echo "Slot number = [$slot_number]"

  # var by compute
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)
  string_content=$(cat $target_filename | grep "$string_search" | awk '{print $3}' | grep -v "iface" | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')
  # display
  echo "Old content is --> [$string_content]"

  # do
  echo "-------"
  echo "do modify"
  sed -i "/$string_search/s/$string_content/$string_purpose/g" $target_filename

  # after
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | rev | cut -d' ' -f1 | rev)
  string_content=$(cat $target_filename | grep "$string_search" | awk '{print $3}' | grep -v "iface" | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

  echo "-------"
  echo "after modify"
  echo "Content is --> [$string_content]"


}

function modify_file_by_search_3() {

  # var
  target_filename="$1"
  string_search="$2"
  #split_by=$3
  string_purpose="$3"

  slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

  # display
  echo "=========================="
  echo "File: $target_filename"
  echo "Search: $string_search"
  #echo "Split by: [$split_by]"
  echo "Purpose is = [$string_purpose]"
  echo "Slot number = [$slot_number]"

  # var by compute
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)
  string_content=$(cat $target_filename | grep "$string_search" | awk '{print $2}' | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')
  # display
  echo "Old content is --> [$string_content]"

  # do
  echo "-------"
  echo "do modify"
  sed -i "/$string_search/s/$string_content/$string_purpose/g" $target_filename

  # after
  #string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | rev | cut -d' ' -f1 | rev)
  string_content=$(cat $target_filename | grep "$string_search" | awk '{print $2}' | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

  echo "-------"
  echo "after modify"
  echo "Content is --> [$string_content]"


}

# settings
modify_file_by_search "/etc/cobbler/settings" "^server" ':' $purpose_ip
modify_file_by_search "/etc/cobbler/settings" "^next_server" ':' $purpose_ip

# dhcp

modify_file_by_search_3 "/etc/dhcp/dhcpd.conf" "next-server" $purpose_ip

modify_file_by_search_1 "/etc/cobbler/dhcp.template" $purpose_ip_3slot
modify_file_by_search_1 "/etc/dhcp/dhcpd.conf"  $purpose_ip_3slot

modify_file_by_search_2 "/etc/cobbler/dhcp.template" "option routers" $purpose_ip_3slot
modify_file_by_search_2 "/etc/dhcp/dhcpd.conf" "option routers" $purpose_ip_3slot

modify_file_by_search_2 "/etc/cobbler/dhcp.template" "option domain-name-servers" $purpose_ip_3slot
modify_file_by_search_2 "/etc/dhcp/dhcpd.conf" "option domain-name-servers" $purpose_ip_3slot

modify_file_by_search_2 "/etc/cobbler/dhcp.template" "range dynamic-bootp" $purpose_ip_3slot
modify_file_by_search_2 "/etc/dhcp/dhcpd.conf" "range dynamic-bootp" $purpose_ip_3slot

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#!/bin/bash

# var

purpose_ip="$1"

purpose_ip_3slot=$(echo $purpose_ip | awk -F'.' '{print $1"."$2"."$3}')

# display

echo "Purpose IP = [$purpose_ip]"

echo "3 Slot is: [$purpose_ip_3slot]"

# function

function modify_file_by_search() {

# var

target_filename="$1"

string_search="$2"

split_by=$3

string_purpose="$4"

slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

# display

echo "=========================="

echo "File: $target_filename"

echo "Search: $string_search"

echo "Split by: [$split_by]"

echo "Purpose is = [$string_purpose]"

echo "Slot number = [$slot_number]"

# var by compute

#string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)

string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2 | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

# display

echo "Old content is --> [$string_content]"

# do

echo "-------"

echo "do modify"

sed -i "/$string_search/s/$string_content/$string_purpose/g" $target_filename

# after

echo "-------"

echo "after modify"

echo "Content is --> [$string_content]"

}

function modify_file_by_search_1() {

# var

target_filename="$1"

#string_search="$2"

#split_by=$3

string_purpose="$2"

slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

# display

echo "=========================="

echo "File: $target_filename"

#echo "Search: $string_search"

#echo "Split by: [$split_by]"

echo "Purpose is = [$string_purpose]"

echo "Slot number = [$slot_number]"

# var by compute

#string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)

string_content=$(cat $target_filename | grep "subnet" | grep "netmask" | grep "{" | awk '{print $2}' | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

# display

echo "Old content is --> [$string_content]"

# do

echo "-------"

echo "do modify"

sed -i "/subnet/s/$string_content/$string_purpose/g" $target_filename

# after

echo "-------"

echo "after modify"

echo "Content is --> [$string_content]"

}

function modify_file_by_search_2() {

# var

target_filename="$1"

string_search="$2"

#split_by=$3

string_purpose="$3"

slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

# display

echo "=========================="

echo "File: $target_filename"

echo "Search: $string_search"

#echo "Split by: [$split_by]"

echo "Purpose is = [$string_purpose]"

echo "Slot number = [$slot_number]"

# var by compute

#string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)

string_content=$(cat $target_filename | grep "$string_search" | awk '{print $3}' | grep -v "iface" | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

# display

echo "Old content is --> [$string_content]"

# do

echo "-------"

echo "do modify"

sed -i "/$string_search/s/$string_content/$string_purpose/g" $target_filename

# after

echo "-------"

echo "after modify"

echo "Content is --> [$string_content]"

}

function modify_file_by_search_3() {

# var

target_filename="$1"

string_search="$2"

#split_by=$3

string_purpose="$3"

slot_number=$(echo "$string_purpose" | awk -F'.' -v count=0 '{for(i=1;i<=NF;i++){count=i} print count}')

# display

echo "=========================="

echo "File: $target_filename"

echo "Search: $string_search"

#echo "Split by: [$split_by]"

echo "Purpose is = [$string_purpose]"

echo "Slot number = [$slot_number]"

# var by compute

#string_content=$(cat $target_filename | grep "$string_search" | cut -d $split_by -f2)

string_content=$(cat $target_filename | grep "$string_search" | awk '{print $2}' | awk -F'.' -v slot_num=$slot_number '{for(i=1;i<=slot_num;i++){ printf $i"."} print "\n"}' | rev | cut -d' ' -f1 | rev | sed 's/.$//')

# display

echo "Old content is --> [$string_content]"

# do

echo "-------"

echo "do modify"

sed -i "/$string_search/s/$string_content/$string_purpose/g" $target_filename

# after

echo "-------"

echo "after modify"

echo "Content is --> [$string_content]"

}

# settings

modify_file_by_search "/etc/cobbler/settings" "^server" ':' $purpose_ip

modify_file_by_search "/etc/cobbler/settings" "^next_server" ':' $purpose_ip

# dhcp

modify_file_by_search_3 "/etc/dhcp/dhcpd.conf" "next-server" $purpose_ip

modify_file_by_search_1 "/etc/cobbler/dhcp.template" $purpose_ip_3slot

modify_file_by_search_1 "/etc/dhcp/dhcpd.conf" $purpose_ip_3slot

modify_file_by_search_2 "/etc/cobbler/dhcp.template" "option routers" $purpose_ip_3slot

modify_file_by_search_2 "/etc/dhcp/dhcpd.conf" "option routers" $purpose_ip_3slot

modify_file_by_search_2 "/etc/cobbler/dhcp.template" "option domain-name-servers" $purpose_ip_3slot

modify_file_by_search_2 "/etc/dhcp/dhcpd.conf" "option domain-name-servers" $purpose_ip_3slot

modify_file_by_search_2 "/etc/cobbler/dhcp.template" "range dynamic-bootp" $purpose_ip_3slot

modify_file_by_search_2 "/etc/dhcp/dhcpd.conf" "range dynamic-bootp" $purpose_ip_3slot

——————————————
Done。

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