[root@sht-sgmhadoopcm- ~]# echo "vm.max_map_count=131072" >> /etc/sysctl.conf

[root@sht-sgmhadoopcm- ~]# echo "vm.swappiness = 1" >> /etc/sysctl.conf

[root@sht-sgmhadoopcm- ~]# sysctl -p

[root@sht-sgmhadoopcm- ~]# echo "cassandra  soft    memlock unlimited" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandra  hard    memlock unlimited" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandrasoft    nofile  65536" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandrahard    nofile  65536" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandrasoft    nproc  65536" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandrahard    nproc  65536" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandrasoft    as  unlimited" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# echo "cassandrahard    as  unlimited" >>  /etc/security/limits.conf

[root@sht-sgmhadoopcm- ~]# wget https://www.python.org/ftp/python/2.7.15/Python-2.7.15.tgz

[root@sht-sgmhadoopcm- ~]# tar -zxf Python-2.7..tgz

[root@sht-sgmhadoopcm- ~]# cd Python-2.7.

[root@sht-sgmhadoopcm- Python-2.7.]# ./configure --prefix=/usr/local/python-2.7.

[root@sht-sgmhadoopcm- Python-2.7.]# make && make install

[root@sht-sgmhadoopcm- Python-2.7.]# /usr/local/python-2.7./bin/python -V

Python 2.7.

[root@sht-sgmhadoopcm- ~]# wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u171-b11/512cd62ec5174c3487ac17c61aaa89e8/jdk-8u171-linux-x64.tar.gz

[root@sht-sgmhadoopcm- ~]# tar -zxf jdk-8u171-linux-x64.tar.gz -C /usr/java

[root@sht-sgmhadoopcm- ~]# /usr/java/jdk1..0_171/bin/java -version

java version "1.8.0_171"

Java(TM) SE Runtime Environment (build 1.8.0_171-b11)

Java HotSpot(TM) -Bit Server VM (build 25.171-b11, mixed mode)

[root@sht-sgmhadoopcm- ~]# groupadd -r dba -g

[root@sht-sgmhadoopcm- ~]# useradd -r -u  -g dba cassandra -d /home/cassandra

[root@sht-sgmhadoopcm- ~]# su - cassandra

[cassandra@sht-sgmhadoopcm- ~]$ vim ~/.bash_profile

# .bash_profile

# Get the aliases and functions

if [ -f ~/.bashrc ]; then

        . ~/.bashrc

fi

# User specific environment and startup programs

export CASSANDRA_HOME=/usr/local/cassandra

export JAVA_HOME=/usr/java/jdk1..0_171

export PYTHON_HOME=/usr/local/python-2.7.

export PATH=$PYTHON_HOME/bin:$JAVA_HOME/bin:$CASSANDRA_HOME/bin:$CASSANDRA_HOME/tools/bin:$PATH:$HOME/bin:/usr/local/bin

[root@sht-sgmhadoopcm- ~]# wget http://archive.apache.org/dist/cassandra/2.1.20/apache-cassandra-2.1.20-bin.tar.gz

[root@sht-sgmhadoopcm- ~]# tar -zxf apache-cassandra-2.1.-bin.tar.gz -C /usr/local/

[root@sht-sgmhadoopcm- ~]# cd /usr/local/

[root@sht-sgmhadoopcm- local]# ln -s apache-cassandra-2.1. cassandra

[root@sht-sgmhadoopcm- local]# chown -R cassandra.dba apache-cassandra-2.1./

[root@sht-sgmhadoopcm- local]# echo 'su - cassandra -c "cd /usr/local/cassandra/bin/ && nohup ./cassandra "' >> /etc/rc.local

[root@sht-sgmhadoopcm- local]# su - cassandra

[cassandra@sht-sgmhadoopcm- ~]$ mkdir /usr/local/cassandra/{data,commitlog,saved_caches,logs}

[cassandra@sht-sgmhadoopcm- ~]$ cat -n  /usr/local/cassandra/conf/cassandra.yaml

…………………

        cluster_name: 'MyCluster'

       data_file_directories:

            - /usr/local/cassandra/data

       commitlog_directory: /usr/local/cassandra/commitlog

       saved_caches_directory: /usr/local/cassandra/saved_caches

                 - seeds: "172.16.101.54"

       listen_address: 172.16.101.54

       start_native_transport: true

       start_rpc: true

       rpc_address: 0.0.0.0

       broadcast_rpc_address: 172.16.101.54

…………………

[cassandra@sht-sgmhadoopcm- ~]$ cat -n /usr/local/cassandra/conf/cassandra-env.sh

…………………

       MAX_HEAP_SIZE="4G"

       HEAP_NEWSIZE="400M"

…………………

[cassandra@sht-sgmhadoopcm- ~]$ /usr/local/cassandra/bin/cassandra

....................

INFO  :: No gossip backlog; proceeding

....................

[cassandra@sht-sgmhadoopcm- ~]$ cat /usr/local/cassandra/logs/system.log

.........................

INFO  [main] -- ::, Server.java: - Starting listening for CQL clients on /0.0.0.0:...

INFO  [main] -- ::, ThriftServer.java: - Binding thrift service to /0.0.0.0:

INFO  [Thread-] -- ::, ThriftServer.java: - Listening for thrift clients...

[cassandra@sht-sgmhadoopcm- ~]$ cqlsh 172.16.101.54

Connected to MyCluster at 172.16.101.54:.

[cqlsh 5.0. | Cassandra 2.1. | CQL spec 3.2. | Native protocol v3]

Use HELP for help.

cqlsh>

[cassandra@sht-sgmhadoopcm- ~]$ cassandra-cli --host 172.16.101.54 --port

Connected to: "MyCluster" on 172.16.101.54/

Welcome to Cassandra CLI version 2.1.

The CLI is deprecated and will be removed in Cassandra 2.2.  Consider migrating to cqlsh.

CQL is fully backwards compatible with Thrift data; see http://www.datastax.com/dev/blog/thrift-to-cql3

Type 'help;' or '?' for help.

Type 'quit;' or 'exit;' to quit.

[default@unknown]