Gugu Ncube

, , , ,

Apache Cassandra – Installation in Ubuntu

—

by

Gugu Ncube
in , , , ,

Installation


# add cassandra sources to /etc/apt/sources.list.d/cassandra.sources.list
# cassandra version 21x

sudo tee /etc/apt/sources.list.d/cassandra.sources.list <<_EOF_
deb http://www.apache.org/dist/cassandra/debian 21x main
deb-src http://www.apache.org/dist/cassandra/debian 21x main
_EOF_

# check if file written properly
#cat /etc/apt/sources.list.d/cassandra.sources.list

# add apache cassandra keys
gpg --keyserver keyserver.ubuntu.com --recv-keys 4BD736A82B5C1B00
gpg --export --armor 4BD736A82B5C1B00 | sudo apt-key add -
gpg --keyserver keyserver.ubuntu.com --recv-keys F758CE318D77295D
gpg --export --armor F758CE318D77295D | sudo apt-key add -

#sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 4BD736A82B5C1B00

# update repository
sudo apt-get update

# install
sudo apt-get install -y cassandra

# More sane default configurations - the default 50% free memory allocation is too much for me
if [ "`grep 'MAX_HEAP_SIZE="' /etc/default/cassandra`" == "" ] ; then
   sudo tee -a  /etc/default/cassandra <<"_EOF_"

# Set the Max Memory used by Cassandra, change to whatever value you like
MAX_HEAP_SIZE="700M"
HEAP_NEWSIZE="200M"

# Performance Tuning
# see also : http://wiki.apache.org/cassandra/PerformanceTuning
JVM_OPTS="$JVM_OPTS -XX:+UseThreadPriorities" # To lower compaction priority
JVM_OPTS="$JVM_OPTS -XX:ThreadPriorityPolicy=42" # To lower compaction priority
JVM_OPTS="$JVM_OPTS -Dcassandra.compaction.priority=1" # To lower compaction priority
JVM_OPTS="$JVM_OPTS -XX:+UseCompressedOops" # enables compressed references, reducing memory overhead on 64bit JVMs

_EOF_

fi;

# restart Cassandra
sudo service cassandra restart

# check Cassandra status
sudo service cassandra status
sudo /etc/init.d/cassandra status

# in case of errors, check the cassandra log files
ls -l /var/log/cassandra/
#total 7228
#-rw------- 1 root      root      3193386 Apr 10 14:33 output.log
#-rw------- 1 cassandra cassandra 4194769 Apr 10 14:33 system.log
# less /var/log/cassandra/system.log

# Optional - Get Version Info about the running Cassandra Instance

# 1. check Cassandra version using nodetool (best option)
nodetool -h localhost version

# 2. check Cassandra version using debian package manager
dpkg -s cassandra |grep Version

# 3. check Cassandra version using cassandra-cli and expect module
sudo apt-get install -y expect
expect -c "spawn cassandra-cli;expect \"exit\";send \"quit;\r\n\";"

/etc/init.d/cassandra script

I deleted the start and stop script when cleaning up the installation.
All subsequent cassandra installion never copied the cassandra init.d script anymore.
so here goes:

# download cassandra init.d script
wget https://raw.github.com/guguncube/bash/master/cassandra

# copy to init.d directory and set permissions
sudo cp cassandra /etc/init.d/
sudo chmod +x /etc/init.d/cassandra

# ensure data directory exists and has the correct permissions
sudo mkdir /var/lib/cassandra/data
sudo chown cassandra:cassandra -R /var/lib/cassandra

Manual installation


#create directories
mkdir -p ~/build/cassandra
cd ~/build/cassandra

# download
version="1.2.4"
wget http://apache.openmirror.de/cassandra/$version/apache-cassandra-$version-bin.tar.gz
tar -xvf apache-cassandra-$version-bin.tar.gz

cd apache-cassandra-$version
sudo ./bin/cassandra

#@TODO: with time on my side - installation of init.d script and required files
# e.g.
#/etc/cassandra/cassandra-env.sh
#/etc/cassandra/cassandra.yaml
#/usr/share/cassandra/apache-cassandra.jar

References

1. Home: http://cassandra.apache.org/
2. Documentation: http://www.datastax.com/docs/1.2/index
3. Debian Packages: http://wiki.apache.org/cassandra/DebianPackaging
4. Apache Cassandra Version: http://stackoverflow.com/questions/3604857/how-do-i-tell-what-version-of-cassandra-im-running