Uncategorized

# echo 'enabled=0' >> /etc/default/apport

Add package repository to 2 nodes

# add-apt-repository ppa:semiosis/ubuntu-glusterfs-3.5 && apt-get update

Install package

# apt-get install glusterfs-server

Join peers into cluster (where “d510” and “d610” are 2 server names known to each other either by dns or /etc/hosts)

# gluster peer probe d510
# gluster peer probe d610

Create a volume and start it

# gluster volume create vol1 replica 2 transport tcp d510:/gluster-storage d610:/gluster-storage force
# gluster volume start vol1

Check volume status

# gluster volume info all

Check peer status

# gluster peer status

Mount a glusterfs volume in a glusterfs client server

# mount -t glusterfs d510:/vol1 /glustermount

Remove a volume

# gluster volume stop volume1 && gluster volume delete volume1

Remove a node (server) from gluster

# gluster peer detach aspireone

Install a gluster client

#apt-get install glusterfs-client

Remove a brick from a volume with 3 bricks, telling gluster we will now have only 2 replicas:

gluster volume remove-brick replica 2 volume1 aspireone:/gluster-storage

A typical entry in /etc/fstab for a client gluster fs is

 d510:/vol1 /glustermount glusterfs defaults 0 0 

You could use this script snoopdcp.sh, usage is like this:

# ./snoopdcp.sh nxge1

The script goes like this:

#!/bin/bash

Interface=$1

if [[ -z "$Interface" ]]
then
  echo "[FATAL]Usage $0 "
  exit 1
fi


#snoopfile=$(mktemp /tmp/snoopy.XXXX)
snoopfile=/tmp/snoopy.XXXX.$$
snoop -d $Interface -c 1 -vv  -o $snoopfile 'dst 01:00:0c:cc:cc:cc and length > 50'
instr=$(snoop -i $snoopfile  -x 26 | nawk -F: ' { print $2 } ' |  cut -b1-41|  sed -e 's/ //g' | nawk 'BEGIN {ORS=""} {print toupper($1)}')
rm -f -- $snoopfile

while  [[ -n "$instr" ]]
do
  typ=`echo $instr | cut -b1-4`
  lhex=`echo $instr | cut -b5-8`
  length=$(echo "ibase=16; $lhex*2" | bc)
  next=$(echo "ibase=16; $lhex*2+1" | bc)
  if [ $length -gt 8 ]
  then
    texthex=`echo $instr | cut -b9-$length`
  else
    texthex=""
  fi
  #  echo "$typ $lhex $texthex"
  if [ $typ == "0001" ]
  then
    printf "Switchname: "
    while  [ $texthex ]
    do
      charhex=`echo $texthex | cut -b1-2`
      chardec=$(echo "ibase=16; $charhex" | bc)
      printf "%b" `printf '\x%x' $chardec 2>/dev/null`
      texthex=`echo $texthex | cut -b3-`
    done
    echo " "
  fi
  if [ $typ == "0003" ]
  then
    printf "Switchport: "
    while  [ $texthex ]
    do
      charhex=`echo $texthex | cut -b1-2`
      chardec=$(echo "ibase=16; $charhex" | bc)
      printf "%b" `printf '\x%x' $chardec 2>/dev/null`
      texthex=`echo $texthex | cut -b3-`
    done
    echo " "
  fi
  if [ $typ == "000A" ]
  then
    echo "VLAN: 0x$texthex $(echo "ibase=16; $texthex" | bc)"
  fi
  if [ $typ == "000B" ]
  then
    echo "Duplex: $texthex"
  fi
  instr=`echo $instr | cut -b$next-`
done

Start the webserver

sudo launchctl load -w /System/Library/LaunchDaemons/org.apache.httpd.plist

If you want to restart it:

sudo launchctl stop -w /System/Library/LaunchDaemons/org.apache.httpd.plist

sudo launchctl start -w /System/Library/LaunchDaemons/org.apache.httpd.plist

Documents are in:

/Library/WebServer/Documents

Configuration is in:

/etc/apache2/httpd.conf

I automated a twitter update from a random fortune quote, using python and the tweepy library.
First i installed tweepy

# pip install tweepy

Then, created /opt/bin/tweepy

#!/opt/bin/python
import tweepy, sys, commands
quote=commands.getoutput("/opt/bin/fortune")
consumer_key, consumer_secret, access_token, access_token_secret = "xxxxxx", "xxxx", "xxx", "xxx"
auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
api = tweepy.API(auth)
#print "Successfully logged in as " + api.me().name + "."
api.update_status(quote)

And.. that’s it!. As easy as 1..2..

#!/opt/bin/bash

cd /opt/fortunes
size=200

while [ $size -gt 130 ];do

file=$(ls /opt/fortunes/| /opt/bin/shuf -n 1)
Q=$(awk -v RS='%'  '
  BEGIN { srand(); } 
  rand() < 1.0/NR { s=$0; }  
  END { print s; }
 ' $file| /opt/bin/sed ':a;N;$!ba;s/\n/ /g;s/\t\t*/ /g' | tr -s ' ')
size=$(echo $Q | wc -c)
done

echo "QOTD: $Q"

alter table Doctor modify column id bigint auto_increment;

afsctool -c /some/directory

this compresses the directory online!

cp /etc/vx/disk.info /etc/vx/disk.info.old
echo > /etc/vx/disk.info
vxconfigd -k
vxdisk -o alldgs list

powermt check force