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This commit is contained in:
Muhammad Hussein Fattahizdeh
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696c67f6ec
87
README.md
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87
README.md
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# Ubuntu Overssh Reinstallation
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If your ISP/Datacenter dosn't provide standard or trusted iso for your server. Get ugly server from it with installed version of Ubuntu server.
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I have same situation installed ubuntu has bad partition table or huge list of stupid package installed. Datacenter network is my primary concern or it's really cheap price but administrators dosn't care. What should i do? That's my way to solve this issue easily.
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Ask them to install ubuntu server what ever is it. re install it over ssh.
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Create your own netiso and reinstall it over ssh. You can partion yor server as you desire. And set more configuration using [ubuntu preseed](https://help.ubuntu.com/lts/installation-guide/armhf/apbs02.html) just over ssh; no kvm/ipmi/vnc required.
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### Requirement
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1. Installed ubuntu version on server via ssh access
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2. Clone this repo to your server
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3. Copy `config.sample` to `config` file and edit field by field exactly:
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```
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#!/bin/bash
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# country
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COUNTRY='IR'
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# network: check network before create iso file
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INTERFACE_DEV='eth0'
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INTERFACE_IP='10.1.1.100'
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INTERFACE_NETMASK='255.255.255.0'
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INTERFACE_GATEWAY='10.1.1.1'
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INTERFACE_NAMESERVERS='4.2.2.4'
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# preseed file: upload created preseed.cfg to your own host before reboot system
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PRESEED_URL="http://10.1.1.2/preseed.cfg"
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# ssh installer password
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PASSWORD="tHISiSpASSWORD"
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# hostname and domain
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HOSTNAME="${INTERFACE_IP//\./\-}-$COUNTRY_LOWER"
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DOMAIN="servers.aasaam.net"
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# lowercase of country code dont change it
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COUNTRY_LOWER="${COUNTRY,,}"
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```
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4. Upload your `preseed.cfg` file to your own host.
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#### Clone repository
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```
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cd /tmp
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git clone https://github.com/mhf-ir/ubuntu-overssh-reinstallation.git
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cd ubuntu-overssh-reinstallation
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```
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#### Config
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See `config.sample` and change it. Carefull about your network settings. It's can hold your server until get new kvm/ipmi/vnc to restore the ssh again.
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```
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cp config.sample config
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vim config
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```
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#### Download network mini iso from ubuntu website
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```
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wget http://archive.ubuntu.com/ubuntu/dists/xenial/main/installer-amd64/current/images/netboot/mini.iso
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```
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#### Build iso
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Remember you must do as root user
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```
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./create-iso.sh
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...
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Your network iso is ready '/tmp//ubuntu-overssh-reinstallation/ubuntu-overssh-reinstall.iso'
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```
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#### Update grub imageboot
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Remember you must do as root user also
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```
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./grub.sh
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...
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Your password is tHISiSpASSWORD
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```
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#### Reboot
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```
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reboot
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```
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#### Get ssh
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Wait it until boot to iso complete and install require packages then
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```
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ssh installer@10.1.1.100
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```
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#### Continue installation of ubuntu
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---
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This script test on Ubuntu 16.04 Server.
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24
config.sample
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24
config.sample
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#!/bin/bash
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# country
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COUNTRY='IR'
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# network: check network before create iso file
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INTERFACE_DEV='eth0'
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INTERFACE_IP='10.1.1.100'
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INTERFACE_NETMASK='255.255.255.0'
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INTERFACE_GATEWAY='10.1.1.1'
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INTERFACE_NAMESERVERS='4.2.2.4'
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# preseed file: upload created preseed.cfg to your own host before reboot system
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PRESEED_URL="http://10.1.1.2/preseed.cfg"
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# ssh installer password
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PASSWORD="tHISiSpASSWORD"
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# hostname and domain
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HOSTNAME="${INTERFACE_IP//\./\-}-$COUNTRY_LOWER"
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DOMAIN="servers.aasaam.net"
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# lowercase of country code dont change it
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COUNTRY_LOWER="${COUNTRY,,}"
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84
create-iso.sh
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84
create-iso.sh
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#!/bin/bash
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# logo
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echo -e "Ubuntu Overssh Reinstallation: Create iso file"
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# check for root user
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if [ "$EUID" -ne 0 ]
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then echo "Please run as root"
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exit
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fi
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# default iso url
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DEFAULT_ISO_URL='http://archive.ubuntu.com/ubuntu/dists/xenial/main/installer-amd64/current/images/netboot/mini.iso'
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# check dependencies
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echo "Checking dependencies...".
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REQUIRE_COMMAND[0]='realpath'
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REQUIRE_COMMAND[1]='mkisofs'
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REQUIRE_COMMAND[2]='dirname'
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REQUIRE_COMMAND[3]='awk'
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REQUIRE_COMMAND[4]='cut'
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REQUIRE_COMMAND[5]='head'
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REQUIRE_COMMAND[6]='grep'
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REQUIRE_COMMAND[7]='apt-get'
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REQUIRE_COMMAND[8]='update-grub'
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for command in "${REQUIRE_COMMAND[@]}"
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do
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if ! type ${command} > /dev/null 2>&1; then
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echo "Please install '${command}' for continue installation"
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exit 1
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fi
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done
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echo "Done"
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SCRIPT=`realpath $0`
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PROJECTPATH=`dirname $SCRIPT`
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CONFIGFILE=$PROJECTPATH/config
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if [ ! -f $CONFIGFILE ]; then
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echo "Please create config file config"
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exit 1
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fi
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source $CONFIGFILE
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ISO_FILE=$PROJECTPATH/mini.iso
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if [ ! -f $ISO_FILE ]; then
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echo "File mini.iso not found. Download it $DEFAULT_ISO_URL"
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exit 1
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fi
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# copy iso
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umount /mnt/ubuntu-overssh-iso 2> /dev/null
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mkdir -p /mnt/ubuntu-overssh-iso
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mount -o loop $ISO_FILE /mnt/ubuntu-overssh-iso 2> /dev/null
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rm -rf $PROJECTPATH/ubuntu-overssh-iso
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mkdir $PROJECTPATH/ubuntu-overssh-iso
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cp -rT /mnt/ubuntu-overssh-iso $PROJECTPATH/ubuntu-overssh-iso
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# create preseed
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cp $PROJECTPATH/preseed.cfg.template $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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# replace vairables
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sed -i 's/timeout 0/timeout 1/g' $PROJECTPATH/ubuntu-overssh-iso/prompt.cfg
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sed -i 's/timeout 0/timeout 1/g' $PROJECTPATH/ubuntu-overssh-iso/isolinux.cfg
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sed -i "s/INTERFACE_DEV/$INTERFACE_DEV/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/INTERFACE_IP/$INTERFACE_IP/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/INTERFACE_NAMESERVERS/$INTERFACE_NAMESERVERS/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/INTERFACE_NETMASK/$INTERFACE_NETMASK/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/INTERFACE_GATEWAY/$INTERFACE_GATEWAY/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/COUNTRY_LOWER/$COUNTRY_LOWER/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/COUNTRY/$COUNTRY/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/HOSTNAME/$HOSTNAME/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/DOMAIN/$DOMAIN/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s/PASSWORD/$PASSWORD/g" $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg
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sed -i "s#append #append priority=critical auto=true preseed/url=$PRESEED_URL netcfg/hostname=$HOSTNAME netcfg/domain=$DOMAIN interface=$INTERFACE_DEV netcfg/disable_dhcp=true netcfg/get_ipaddress=$INTERFACE_IP netcfg/get_netmask=$INTERFACE_NETMASK netcfg/get_gateway=$INTERFACE_GATEWAY netcfg/get_nameservers=$INTERFACE_NAMESERVERS #g" $PROJECTPATH/ubuntu-overssh-iso/txt.cfg
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cp $PROJECTPATH/ubuntu-overssh-iso/preseed.cfg $PROJECTPATH/preseed.cfg
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mkisofs -D -r -V UBUNTU_SERVER -cache-inodes -J -l -b isolinux.bin -c boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o $PROJECTPATH/ubuntu-overssh-reinstall.iso $PROJECTPATH/ubuntu-overssh-iso
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echo "Your network iso is ready '$PROJECTPATH/ubuntu-overssh-reinstall.iso'"
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87
grub.sh
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87
grub.sh
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#!/bin/bash
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# logo
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echo -e "Ubuntu Overssh Reinstallation: Update grub"
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# check for root user
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if [ "$EUID" -ne 0 ]
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then echo "Please run as root"
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exit
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fi
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# default iso url
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DEFAULT_ISO_URL='http://archive.ubuntu.com/ubuntu/dists/xenial/main/installer-amd64/current/images/netboot/mini.iso'
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# check dependencies
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echo "Checking dependencies...".
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REQUIRE_COMMAND[0]='realpath'
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REQUIRE_COMMAND[1]='mkisofs'
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REQUIRE_COMMAND[2]='dirname'
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REQUIRE_COMMAND[3]='awk'
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REQUIRE_COMMAND[4]='cut'
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REQUIRE_COMMAND[5]='head'
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REQUIRE_COMMAND[6]='grep'
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REQUIRE_COMMAND[7]='apt-get'
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REQUIRE_COMMAND[8]='update-grub'
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for command in "${REQUIRE_COMMAND[@]}"
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do
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if ! type ${command} > /dev/null 2>&1; then
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echo "Please install '${command}' for continue installation"
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exit 1
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fi
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done
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echo "Done"
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SCRIPT=`realpath $0`
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PROJECTPATH=`dirname $SCRIPT`
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CONFIGFILE=$PROJECTPATH/config
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if [ ! -f $CONFIGFILE ]; then
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echo "Please create config file config"
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exit 1
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fi
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UBUNTUOVERSSHISO_FILE=$PROJECTPATH/ubuntu-overssh-reinstall.iso
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if [ ! -f $UBUNTUOVERSSHISO_FILE ]; then
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echo "Please create image first."
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exit 1
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fi
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source $CONFIGFILE
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apt-get install -y -qq grub-imageboot
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if [ ! -f /etc/default/grub ]; then
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echo "Seems be grub dosnt install or not matched version"
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exit 1
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fi
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rm /boot/images -rf
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mkdir -p /boot/images/
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cp $UBUNTUOVERSSHISO_FILE /boot/images/iso.iso
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update-grub
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BOOTABLEGRUBNAME=`cat /boot/grub/grub.cfg | grep iso | head -n 1 | cut -d \" -f2`
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if [ -z "$BOOTABLEGRUBNAME" ]; then
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echo "Seems be grub imageboot not work as expected. try manual"
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exit 1
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fi
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GRUBBACKUPFILE=$PROJECTPATH/grub.backup
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if [ ! -f $GRUBBACKUPFILE ]; then
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cp /etc/default/grub $GRUBBACKUPFILE
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fi
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sed -i "s/GRUB_DEFAULT=0/GRUB_DEFAULT='$BOOTABLEGRUBNAME'/g" /etc/default/grub
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update-grub
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echo "1. Upload 'preseed.cfg' file for $PRESEED_URL"
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echo " ==================================== "
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cat $PROJECTPATH/preseed.cfg
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echo " ==================================== "
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echo "2. Reboot current machine and wait to init to ssh installer"
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echo "3. Connect using ssh client ssh installer@$INTERFACE_IP"
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echo "4. Your password is $PASSWORD"
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21
preseed.cfg.template
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21
preseed.cfg.template
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d-i debian-installer/locale string en_US
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d-i debian-installer/language string en
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d-i debian-installer/country string COUNTRY
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d-i debian-installer/locale string en_US.UTF-8
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d-i netcfg/choose_interface select INTERFACE_DEV
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d-i netcfg/link_wait_timeout string 1
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d-i netcfg/disable_autoconfig boolean true
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d-i netcfg/dhcp_failed note
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d-i netcfg/dhcp_options select Configure network manually
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d-i netcfg/get_ipaddress string INTERFACE_IP
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d-i netcfg/get_netmask string INTERFACE_NETMASK
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d-i netcfg/get_gateway string INTERFACE_GATEWAY
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d-i netcfg/get_nameservers string INTERFACE_NAMESERVERS
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d-i netcfg/confirm_static boolean true
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d-i netcfg/hostname string HOSTNAME
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d-i netcfg/domain string DOMAIN
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d-i netcfg/wireless_wep string
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d-i hw-detect/load_firmware boolean true
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d-i anna/choose_modules string network-console
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d-i network-console/password password PAASWORD
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d-i network-console/password-again password PAASWORD
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