Posts tagged ubuntu
Posts tagged ubuntu
Ok here is what I did to install FreeSwitch on Ubuntu 10.04 LTS
Lets get into super-user mode, this can be done by issuing the command
sudo su
After you have entered the password then do the obligatory:
apt-get update
apt-get upgrade
apt-get dist-upgrade
packages install YMMV
apt-get install php5 php5-xcache php5-xmlrpc php5-mysql php5-gd php5-cli build-essential git-core autoconf libgdbm-dev libdb-dev subversion php5-curl automake libtool libncurses5 libncurses5-dev php-db mysql-server-5.1 mysql-client-5.1 libtiff4-dev
Next let’s download the latest daily FreeSwitch and compile it.
cd /usr/src/
git clone git://git.freeswitch.org/freeswitch.git
cd freeswitch
./bootstrap.sh
./configure
make
make install
Assuming all the above went well the last stage of the FreeSwitch installation is the sounds:
make sounds-install moh-install
That’s Free Switch installion complete!
You can if you feel so inclined, install the High definition sounds with:
make uhd-sounds-install uhd-moh-install hd-sounds-install hd-moh-install
start the Service using
/usr/local/freeswitch/bin/freeswitch -nc
You should be able to point a SIP device at your ubuntu box IP address, using extension 1000 and a secret/password of 1234 try calling 5000 to test.
An excellent walkthrough was found here after writing this post:
http://wiki.2600hz.org/display/bluebox/Install+blue.box+on+Ubuntu
As an aide de memoire, on the initial install screen press F4 and select Minimal Install.
After booting in and performing the normal apt-get update.
install the package that adds in the missing utilities such as nano.
apt-get install -y ubuntu-standard
add sudo as a prefix if you are not the root user.
Due to an untimely wipe of my partition table information from my 1TB hard drive on my desktop. I find myself once again questioning the OS I use on my desktop, my archiving capabilities, and the portability of my setup.
With all this in mind I have set down some concepts below; It will certainly be interesting to see if I keep to them, which fall by the wayside, when and why?
I am looking to run my desktop PC which is powerful; AMD 6 core CPU and 16GB of RAM as multiple machines.
This is not something new exactly, as I have been running multiple virtual machines on my desktop for years (that is why I have 16 Gig of RAM) the subtle difference is my desktop will comprise of multiple machines.
Goal is to remove and thin down the Host as much as possible.
Portable Apps should be used where possible and synced to network drive and be available for all windows desktops for use.
An attempt will be made to keep the disk drive image size down to below 64GB (e.g 63GB) , as these size flash drives are becoming cost effective it would be useful to be able to take any desktop environment with me.
I will be making an effort to try and use ubuntu when both OS provide the same application. I will see how this goes with MS Office as I cannot have files corrupted for work.
A word about the Host PC and the Guests:
I will have a slimmed down Host running win7 X64. it should take care of the following.
The DRP VM Guests initially identified:
The first question that hits me is “Should each machine have its own network identity?” or “Should i use a VMWare bridge network adaptor or NAT?”.
I think the initial answer is I can see more issues with using a single identity, so they will all have separate ones; leading on from that decision it would make sense that a virtual machine can be seen at the network level as a separate entitiy so they will all have bridged interfaces. Ok,
I think its time to start…. I will let you know how it goes!
This post has an install script towards the bottom which will install SNMP Daemon and its required configuration for you. That feat is the result of many hours of work. The BASH scripting only took an hour or two to knock together, the main effort was getting SNMP working with no errors with both IPv4 and IPv6 support; MIB support and SNMP Traps sent for notification of events.
I have tested the script using ubuntu 11.04 and more recently with revision 1.1 of the scrpt I have tested with ubuntu 8.04.
NOTE: With NET-SNMP version 5.4.1 on ubuntu 8.0.4 I did notice that the only way to remove the error “getaddrinfo: Name or service not known” on startup was to remove the IPv6 parameters from the listening address, IPv6 lookups do work on 8.0.4 but you do have to live with some early immature code issues.
I suggest you copy the script below and paste into a file on your ubuntu system and make sure you chmod the file to make it executable from root;
chmod 755 <script-name>
should do it.
If you have a number of machines to install SNMP on, I suggest you change the defaults towards the top of the script to match your network and environment requirements this will make for a simpler and faster install.
#!/bin/bash
#
# SNMP install
#by Paul Miller
#Revisions:
#1.0 - Initial
#1.1 - corrections after testing with ubuntu 8.04 LTS
#CHANGE DEFAULT script variables here before running
def_READ_ONLY_SECRET=”public”
def_READ_WRITE_SECRET=”private”
def_IPv4_SUBNET=”192.168.0.0/24”
def_IPv6_SUBNET=”2001:470:812c::/64”
def_SYS_LOC=”New Zealand”
def_SYS_CONT_NAME=”Paul Miller”
def_SYS_CONT_EMAIL=”idkpmiller@sip2serve.com”
def_TRAP_COMMUNITY=”idknet”
def_TRAP_RECEIVER=”nms.sip2serve.com” # IP or FQDN of a SNMP TRAP recievering
server
#====END of User Varables==================
#check current user is root
(( `id -u` )) && echo “Must be ran as root, try prefixxing with sudo.” && exit 1
#clear the screen
clear
# Get Input from User
echo “Capture User Options:”
echo “=====================”
echo “Please answer the following questions.”
echo “Hitting return will continue with the default option”
echo
echo
read -p “System Location [$def_SYS_LOC]: ” -e t1
if [ -n “$t1” ]; then def_SYS_LOC=”$t1”;fi
read -p “System Contact Name [$def_SYS_CONT_NAME]: ” -e t1
if [ -n “$t1” ]; then def_SYS_CONT_NAME=”$t1”;fi
read -p “System Contact Email [$def_SYS_CONT_EMAIL]: ” -e t1
if [ -n “$t1” ]; then def_SYS_CONT_EMAIL=”$t1”;fi
read -p “Trap Community String [$def_TRAP_COMMUNITY]: ” -e t1
if [ -n “$t1” ]; then def_TRAP_COMMUNITY=”$t1”;fi
read -p “NMS or Trap Reciever Address (IP or FQDN) [$def_TRAP_RECEIVER]: ” -e t1
if [ -n “$t1” ]; then def_TRAP_RECEIVER=”$t1”;fi
read -p “IPv4 subnets that can access SNMP on System [$def_IPv4_SUBNET]: ” -e t1
if [ -n “$t1” ]; then def_IPv4_SUBNET=”$t1”;fi
read -p “IPv6 subnets that can access SNMP on System [$def_IPv6_SUBNET]: ” -e t1
if [ -n “$t1” ]; then def_IPv6_SUBNET=”$t1”;fi
read -p “Read Only Community String [$def_READ_ONLY_SECRET]: ” -e t1
if [ -n “$t1” ]; then def_READ_ONLY_SECRET=”$t1”;fi
read -p “Read Write Community String [$def_READ_WRITE_SECRET]: ” -e t1
if [ -n “$t1” ]; then def_READ_WRITE_SECRET=”$t1”;fi
cat «EOF
=====================
The Answers provided:
=====================
System Location: $def_SYS_LOC
System Contact: $def_SYS_CONT_NAME
System Contact Email: $def_SYS_CONT_EMAIL
RO Community String: $def_READ_ONLY_SECRET
RW Community String $def_READ_WRITE_SECRET
Trap Community String: $def_TRAP_COMMUNITY
Trap Reciever Address: $def_TRAP_RECEIVER
IPv4 Subnet ACL: $def_IPv4_SUBNET
IPv6 Subnet ACL: $def_IPv6_SUBNET
EOF
read -p “Press Y to continue with Install.” -n 1
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
echo “”
echo “Goodbye!”
exit 1
fi
# update system
echo “”
echo “###############################################”
echo “update system”
apt-get -qq update
# install requirements
echo “install requirements”
apt-get -y -qq install snmp
apt-get -y -qq install snmp-mibs-downloader
apt-get -y -qq install snmpd
apt-get -y -qq install libsnmp-base
# Configure SNMP
echo “Configure SNMP”
echo “###############”
cat «EOF > /etc/snmp/snmp.conf
#
# As the snmp packages come without MIB files due to license reasons, loading
# of MIBs is disabled by default. If you added the MIBs you can reenable
# loaging them by commenting out the following line.
#mibs :
EOF
echo “/etc/snmp/snmp.conf - DONE.”
#==========================================
cat «EOF > /etc/snmp/snmpd.conf
############### Generic config information ###############
agentAddress udp:161,udp6:161
sysLocation $def_SYS_LOC
sysServices 72
sysContact $def_SYS_CONT_NAME <$def_SYS_CONT_EMAIL>
rocommunity $def_READ_ONLY_SECRET $def_IPv4_SUBNET
rocommunity6 $def_READ_ONLY_SECRET $def_IPv6_SUBNET
rwcommunity $def_READ_WRITE_SECRET
rwcommunity6 $def_READ_WRITE_SECRET
trapcommunity $def_TRAP_COMMUNITY
trap2sink $def_TRAP_RECEIVER
############### Common config directives ###############
disk /
disk /var
disk /usr
disk /tmp
swap 16000
#linkUpDownNotifications yes
#defaultMonitors yes
master agentx
############### Node specific config directives ###############
EOF
echo “/etc/snmp/snmpd.conf - DONE.”
#==========================================
cat «EOF > /etc/snmp/snmptrapd.conf
#
# PLEASE: read the snmptrapd.conf(5) manual page as well!
#
TRAPDRUN=yes
EOF
echo “/etc/snmp/snmptrapd.conf - DONE.”
#==========================================
cat «EOF > /etc/default/snmpd
SNMPDRUN=yes
SNMPDOPTS=’-Lsd -Lf /dev/null -u snmp -g snmp -I -smux -p /var/run/snmpd.pid’
TRAPDRUN=no
TRAPDOPTS=’-Lsd -p /var/run/snmptrapd.pid’
SNMPDCOMPAT=yes
EOF
echo “/etc/default/snmpd - DONE.”
#==========================================
echo ‘###############’
echo ‘Starting SNMP ‘
echo ‘###############’
/etc/init.d/snmpd restart
sleep 5
if [ “$(pidof snmpd)” ]
then
clear
cat «EOF
Installation and Configuration of snmp
was successful.
INSTRUCTIONS
============
you can test snmp by using the following commands
for IPv4 systems:
snmpwalk -c public -v 2c localhost sysname
for IPv6 systems:
snmpwalk -c public -v 2c udp6:::1 sysname
EOF
else
echo “snmpd FAILED! to start”
echo “Not sure what went wrong.”
fi
exit
Revision: 1.0 - Initial post
1.1 - corrections after testing with ubuntu 8.04
I have put a script together that allows me to install a specified version of Zabbix on a Ubuntu server, if you choose not to install the server the script assumes you want to install the Zabbix agent. It also provides an option to compile with IPv6 support.
Although there is some error checking, they can always be more added. If you decide to improve the script further please leave a comment with a link to the new improved version.
It is possibly that the CODE section of this blog provider mucks up some of the special formatting characters, if you have problems check what you see on this page to what has been copied into your script file.
As usual make sure you chmod +x the script file and I suggest you run this with root privelidges.
#!/bin/bash
#TODO
# error checking always needs improving
#Adapted from script found online
# CHANGES by Paul Miller:
#enhanced to offer IPv6 support
#Changed to support mysql
#added option for version support
#server or agent install
#added some error checking
####################################################
#Set Default script variables here before running
DATABASE=”mysql” # option ONLY mysql at present
IPv6=true # options true or false
VERSION=”1.8.8”
DB_USER=”zabbix”
DB_PASS=”zabb1x”
DB_HOST=”localhost”
SERVER_IP=”192.168.0.9” # IP of zabbix server for agents to communicate with.
SERVER_INSTALL=true # if false assumed to be agent only install
#====END of User Varables==================
IPv4_ADDR=`ifconfig | grep ‘inet addr:’| grep -v ‘127.0.0.1’ | cut -d: -f2 | awk ‘{ print $1}’`
MYSQL=”$(which mysql)”
HOSTNAME=$(hostname -f)
clear
# Get Input from Users
echo “Capture User Options:”
echo “=====================”
echo “Please answer the following questions.”
echo “Hitting return will continue with the default option”
echo
echo
# Get_Server - Do they require a Server Install?
read -p “Install Zabbix Server? true/false [$SERVER_INSTALL]: ” -e t1
if [ -n “$t1” ]
then
SERVER_INSTALL=”false”
#Now we ASSUME that this is a Agent ONLY install
# Get_Server_IP - What Version of Zabbix do they require?
read -p “What is the Zabbix Server IP Address? [$SERVER_IP]: ” -e t1
if [ -n “$t1” ]
then
SERVER_IP=”$t1”
else
SERVER_IP=”192.168.0.9”
fi
#====END Get_Server_IP
else
SERVER_INSTALL=”true”
fi
#====END Get_Server
# Get_Version - What Version of Zabbix do they require?
read -p “Which version? [$VERSION]: ” -e t1
if [ -n “$t1” ]
then
VERSION=”$t1”
else
VERSION=”1.8.8”
fi
#====END Get_Version
# Get_IPv6 - Do they require IPv6 support?
read -p “Is support for IPv6 required? true/false [$IPv6]: ” -e t1
if [ -n “$t1” ]
then
IPv6=”false”
else
IPv6=”true”
fi
#====END Get_IPv6
# Step 1 ================================
# nothing to do for agent only installs
echo
echo “Installation Step 1 Started”
################
#updating system
################
apt-get -qq update
if [ $? -eq 0 ]; then
echo “Step 1 completed successfully!”
else
echo “Step 1 FAILED!”
exit
fi
# Step 2 ================================
if $SERVER_INSTALL ; then
#####################
#install requirements
#####################
echo
echo “Installation Step 2 Started”
if ! dpkg-query -W fping; then apt-get install -qq -y fping; fi
if ! dpkg-query -W apache2; then apt-get install -qq -y apache2; fi
if ! dpkg-query -W php5; then apt-get install -qq -y php5; fi
if ! dpkg-query -W php5-gd; then apt-get install -qq -y php5-gd; fi
if ! dpkg-query -W libsnmp-dev; then apt-get install -qq -y libsnmp-dev; fi
if ! dpkg-query -W libcurl4-openssl-dev; then apt-get install -qq -y libcurl4-openssl-dev; fi
if ! dpkg-query -W libapache2-mod-php5; then apt-get install -qq -y libapache2-mod-php5; fi
if ! dpkg-query -W libiksemel-dev; then apt-get install -qq -y libiksemel-dev; fi
if ! dpkg-query -W libssh2-1-dev; then apt-get install -qq -y libssh2-1-dev; fi
if ! dpkg-query -W libopenipmi-dev; then apt-get install -qq -y libopenipmi-dev; fi
if ! dpkg-query -W libmysqlclient-dev; then apt-get install -qq -y libmysqlclient-dev; fi
if ! dpkg-query -W mysql-server; then apt-get install -qq -y mysql-server; fi
if ! dpkg-query -W libapache2-mod-auth-mysql; then apt-get install -qq -y libapache2-mod-auth-mysql; fi
if ! dpkg-query -W php5-mysql; then apt-get install -qq -y php5-mysql; fi
fi
if ! dpkg-query -W build-essential; then apt-get install -qq -y build-essential; fi
echo “Step 2 completed successfully!”
# Step 3 ================================
#######################
#Initial Database setup
#######################
echo
echo “Installation Step 3 Started”
# create zabbix system user
adduser zabbix —no-create-home —system —group —disabled-password —shell /bin/false —quiet
if [ $? -eq 0 ]; then
echo “ User zabbix created”
else
echo “ FAILED to create User zabbix”
exit 1
fi
if $SERVER_INSTALL ; then
if [ “$DATABASE” == “mysql” ]; then
echo -n “ Input the MySQL admin user name: “
read -e MySQLADMIN
echo -n “ Input the MySQL admin user password: “
read -e MySQLADMINPASS
$MYSQL -u$MySQLADMIN -p$MySQLADMINPASS -Bse ‘CREATE DATABASE zabbix;’
$MYSQL -u$MySQLADMIN -p$MySQLADMINPASS -Bse “GRANT ALL ON zabbix.* TO zabbix@localhost;”
echo “ mysql database and user created”
else
echo “postgresql initial DB setup”
#postgresql initial DB setup
echo -n “Input the postgre user name for this database: “
read -e DB_USER
echo -n “Input the MySQL admin user password: “
read -e MySQLADMINPASS
fi
echo “Step 3 completed successfully!”
fi
# Step 4 ================================
################
#Zabbix download
################
echo
echo “Installation Step 4 Started”
cd /tmp/
DIRECTORY=/tmp/install
if [ ! -d “$DIRECTORY” ]; then
mkdir /tmp/install
fi
cd /tmp/install
echo ” temporary install directory created”
echo ” downloading zabbix source”
if ! [ -e “zabbix-$VERSION.tar.gz” ]
then
wget -nv http://prdownloads.sourceforge.net/zabbix/zabbix-$VERSION.tar.gz
echo “ downloaded zabbix source”
else
echo “ zabbix source of correct version already exists”
fi
echo ” untar zabbix source”
tar zxf zabbix-$VERSION.tar.gz
echo ” prepare directory and file permissions”
chmod -R 777 /tmp/install/*
cd /tmp/install/zabbix-$VERSION
chmod +x ./configure
if $SERVER_INSTALL ; then
# DB integration
echo ” load mysql with provided schemas”
cd /tmp/install/zabbix-$VERSION/create/schema
cat mysql.sql | mysql -u$MySQLADMIN -p$MySQLADMINPASS zabbix
cd ../data
cat data.sql | mysql -u$MySQLADMIN -p$MySQLADMINPASS zabbix
cat images_mysql.sql | mysql -u$MySQLADMIN -p$MySQLADMINPASS zabbix
fi
echo ” prepare compile build options”
if $SERVER_INSTALL ; then
#Server DB and other build options
build_opts=” —prefix=/usr —mandir=\${prefix}/share/man —infodir=\${prefix}/share/info “
if $IPv6 ; then
build_opts=” —enable-ipv6 $build_opts”
fi
# —with-mysql
build_opts=” —with-mysql $build_opts”
cd /tmp/install/zabbix-$VERSION
echo “Using configure set like this: “
echo “configure —quiet —enable-server —with-net-snmp —with-libcurl —with-openipmi —with-jabber —with-ssh2 —enable-agent $build_opts”
echo “”
./configure —quiet —enable-server —with-net-snmp —with-libcurl —with-openipmi —with-jabber —with-ssh2 —enable-agent $build_opts
else
#Agents only build options
build_opts=” —prefix=/usr —mandir=\${prefix}/share/man —infodir=\${prefix}/share/info “
if $IPv6 ; then
build_opts=” —enable-ipv6 $build_opts”
fi
cd /tmp/install/zabbix-$VERSION
echo “Using configure set like this: “
echo “configure —quiet —enable-agent $build_opts”
echo “”
./configure —quiet —enable-agent $build_opts
fi
echo “ Ready to compile”
cd /tmp/install/zabbix-$VERSION
make -s install
if [ $? -eq 0 ]; then
echo “Step 4 completed successfully!”
else
echo “Step 4 Compile FAILED!”
exit
fi
sleep 5
#step 5 for Server installations
if $SERVER_INSTALL ; then
#############################
#Zabbix $VERSION installation
#FRONTEND installation
#############################
echo “Step 5 FRONTEND installation”
sed -i.backup -e “s/post_max_size = 8M/post_max_size = 32M/g” /etc/php5/apache2/php.ini
sed -i.backup -e “s/max_execution_time = 30/max_execution_time = 600/g” /etc/php5/apache2/php.ini
sed -i.backup -e “s/max_input_time = 60/max_input_time = 600/g” /etc/php5/apache2/php.ini
sed -i,backup -e ‘/date.timezon/a\date.timezone = “Pacific/Auckland”’ /etc/php5/apache2/php.ini
cd /tmp/install/zabbix-$VERSION/frontends/php
sleep 5
echo “ Make web directory”
DIRECTORY=/var/www/zabbix
if [ ! -d “$DIRECTORY” ]; then
mkdir /var/www/zabbix
fi
echo “ Copy zabbix web frontend to web directory”
cp -a . /var/www/zabbix
echo “ Change the permissions to default apache2”
chown www-data:www-data -R /var/www/zabbix
cat «EOF > /etc/apache2/sites-available/zabbix
<VirtualHost /zabbix>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/zabbix
<Directory />
Options FollowSymLinks Indexes MultiViews
AllowOverride None
</Directory>
</VirtualHost>
EOF
echo “ Zabbix $VERSION installation”
fi
#step 5 for agents only they join here…
ln -s /usr/bin/fping /usr/sbin/fping
if $IPv6 ; then
ln -s /usr/bin/fping6 /usr/sbin/fping6
fi
DIRECTORY=/etc/zabbix
if [ ! -d “$DIRECTORY” ]; then
mkdir $DIRECTORY
fi
DIRECTORY=/var/log/zabbix
if [ ! -d “$DIRECTORY” ]; then
mkdir $DIRECTORY
chown zabbix:zabbix -R $DIRECTORY
chmod 766 $DIRECTORY
fi
DIRECTORY=/var/run/zabbix
if [ ! -d “$DIRECTORY” ]; then
mkdir $DIRECTORY
chown zabbix:zabbix -R $DIRECTORY
chmod 766 $DIRECTORY
fi
cp /tmp/install/zabbix-$VERSION/misc/conf/zabbix_agentd.conf /etc/zabbix
#check for server install
if $SERVER_INSTALL ; then
cp /tmp/install/zabbix-$VERSION/misc/conf/zabbix_server.conf /etc/zabbix
sed -i.backup -e “s/DBUser=root/DBUser=$DB_USER/g” -e “s|/tmp/zabbix_server.log|/var/log/zabbix/zabbix_server.log|g” -e “s|# PidFile=/tmp/zabbix_server.pid|PidFile=/var/run/zabbix/zabbix_server.pid|g” /etc/zabbix/zabbix_server.conf
fi
sed -i.backup -e “s|/tmp/zabbix_agentd.log|/var/log/zabbix/zabbix_agentd.log|g” -e “s|# PidFile=/tmp/zabbix_agentd.pid|PidFile=/var/run/zabbix/zabbix_agentd.pid|g” /etc/zabbix/zabbix_agentd.conf
chown zabbix:zabbix -R /etc/zabbix
cp /tmp/install/zabbix-$VERSION/misc/init.d/debian/zabbix* /etc/init.d/
#check for server install
if $SERVER_INSTALL ; then
sed -i.backup -e “s|/usr/local/sbin/|/usr/sbin/|” /etc/init.d/zabbix-server
chmod 775 /etc/init.d/zabbix-server
update-rc.d zabbix-server defaults
echo “ Starting the zabbix server”
/etc/init.d/zabbix-server start
echo “ Restarting Apache for changes to take effect”
/etc/init.d/apache2 restart
sleep 5
if [ “$(pidof zabbix_server)” ]
then
echo “Server Installation Complete!”
echo “zabbix can be found at: “
echo “http://$IPv4_ADDR/zabbix”
echo “ Login: admin”
echo “ Passwd: zabbix”
else
echo “Installation FAILED!”
echo “zabbix server process is NOT running.”
echo “Not sure what went wrong.”
fi
else
sed -i.backup -e “s|/tmp/zabbix_agentd.log|/var/log/zabbix/zabbix_agentd.log|g” -e “s|# PidFile=/tmp/zabbix_agentd.pid|PidFile=/var/run/zabbix/zabbix_agentd.pid|g” -e “s|Server=127.0.0.1|Server=$SERVER_IP|g” -e “s|Hostname=Zabbix server|Hostname=$HOSTNAME|g” /etc/zabbix/zabbix_agentd.conf
fi
sed -i.backup -e “s|/usr/local/sbin/|/usr/sbin/|” /etc/init.d/zabbix-agent
chmod 775 /etc/init.d/zabbix-agent
update-rc.d zabbix-agent defaults
echo “ Starting the zabbix agent”
/etc/init.d/zabbix-agent start
sleep 5
if [ “$(pidof zabbix_agentd)” ]
then
#cleaning up
rm -rf /tmp/install
echo “Agent Installation Complete!”
else
echo “Agent Installation FAILED!”
echo “zabbix agent process is NOT running.”
echo “Not sure what went wrong.”
fi
exit
Revision History
Ok, so its not rocket science to install webmin on Ubuntu, however as I spend a reasonable amount of time building up servers to try new applications or test particular versions of applications that I already use, I find I spend a fair amount of time repeating the same boring tasks; one of them being installing Webmin.
To use this script sudo in root using
sudo su
Make sure the script has the execute permision flag set you can simply ‘cd’ to the directory where you copied the script and type:
chmod +x webmin_install.sh
run the script by typing
./webmin_install.sh
This script will install the latest version of webmin on your machine.
Hmm… I cannot see how to attach the script file to this post, so instead I have copied the contents below, the details above assume you copy the script below into a file called webmin_install.sh
#!/bin/bash
#
# webmin install
# update system
echo ‘###############’
echo ‘update system’
echo ‘###############’
apt-get update
# install requirements
echo ‘###############’
echo ‘install requirements’
echo ‘###############’
apt-get install -y perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python
#update repo
echo ‘###############’
echo ‘ Repo setup ‘
echo ‘###############’
echo “deb http://download.webmin.com/download/repository sarge contrib” » /etc/apt/sources.list
echo “deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib” » /etc/apt/sources.list
#Install GPG key
echo ‘###############’
echo ‘ Install GPG ‘
echo ‘###############’
cd /root
wget http://www.webmin.com/jcameron-key.asc
apt-key add jcameron-key.asc
#Download and Install webmin
echo ‘###############’
echo ‘Install Webmin ‘
echo ‘###############’
apt-get update
apt-get install -y webmin
Well this issue is not expected to be seen by many as it is particular scenario where the issue arises.
If your network has IPv4 DHCP and IPv6 DHCP enabled then you may see this issue.
Your newly installed off the CD ubuntu 11.10 requests and receives both an IPv4 and a IPv6 address making your freshly installed system a dual stacked one.
You would think that having both IPv4 and IPv6 would make IP communications possible with a wider audience than a simply IPv4 or IPv6 only system. In reality you get the same connectivity as a native IPv6 attached host, Why?
Well as ubuntu ONLY adds IPv6 DNS server entries from the DHCP information received to /etc/resolv.conf this causes an issue whereby standard sites that do not operate IPv6 are not accessible. The simply answer is to add a new nameserver entry for your IPv4 DNS servers.
This does mean as a side effect that even if you only have two name servers per IP stack, it can cause slow response when a DNS server has failed, to help combat this I use the following line at the end my resolv.conf file.
options timeout:1 attempts:2 # reduce DNS timeout to 3 seconds
My full /etc/resolv.conf file looks similar to this:
domain example.com
search example.com
nameserver 2001:470:1::6
nameserver 2001:470:2::8
nameserver 192.168.0.6
nameserver 192.168.254.8
options timeout:1 attempts:2 # reduce DNS timeout to 3 seconds
