Sharing simple steps to configure Cassandra cluster in few minutes ,
Prerequisite :
Install Java ( Jre ) from oracle site and verify java version , But our installing step will be take care of java installation as well
java --versionInstalling Cassandra repository :
What are repositories ?
"Authentication keys" are usually obtained from the maintainer of the software repository. The maintainer will often place a copy of the authentication key on a public key server such as www.keyserver.net. The key can then be retrieved using the command.
Install the Cassandra repository into /etc/apt/sources.list.d/cassandra.sources.list using below command
Depends on requirement , update the 36x values into below command
echo "deb http://www.apache.org/dist/cassandra/debian 36x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.listif we didn't know the public key to authenticate for download packages , just run apt-get update commands and get the authentication key for Cassandra software
root@datablogs:~# sudo apt-get update
Hit:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:5 http://security.ubuntu.com/ubuntu xenial-security InRelease [109 kB]
Hit:6 http://apt.postgresql.org/pub/repos/apt xenial-pgdg InRelease
Get:4 https://downloads.apache.org/cassandra/debian 36x InRelease [267 B]
Ign:4 https://downloads.apache.org/cassandra/debian 36x InRelease
Get:7 https://downloads.apache.org/cassandra/debian 36x/main amd64 Packages [678 B]
Fetched 113 kB in 1s (79.6 kB/s)
Reading package lists... Done
W: GPG error: https://downloads.apache.org/cassandra/debian 36x InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 749D6EEC0353B12C
W: The repository 'http://www.apache.org/dist/cassandra/debian 36x InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Here , 749D6EEC0353B12C is the public key . Add the public key to install Cassandra ,
root@datablogs:~# sudo apt-key adv --keyserver pool.sks-keyservers.net --recv-key 749D6EEC0353B12C
Executing: /tmp/tmp.HUY7Ncexdr/gpg.1.sh --keyserver
pool.sks-keyservers.net
--recv-key
749D6EEC0353B12C
gpg: requesting key 0353B12C from hkp server pool.sks-keyservers.net
gpg: key 0353B12C: public key "T Jake Luciani <jake@apache.org>" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
Installing Apache Cassandra :
Start updating the repository and install Cassandra cluster , Java Packages included with installation
root@datablogs:~# sudo apt-get update
Hit:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:5 http://security.ubuntu.com/ubuntu xenial-security InRelease [109 kB]
Hit:6 http://apt.postgresql.org/pub/repos/apt xenial-pgdg InRelease
Get:4 https://downloads.apache.org/cassandra/debian 36x InRelease [267 B]
Fetched 112 kB in 1s (95.7 kB/s)
Reading package lists... Done
root@datablogs:~# sudo apt-get install cassandra
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
ca-certificates-java fontconfig-config fonts-dejavu-core java-common libavahi-client3 libavahi-common-data libavahi-common3 libcups2 libfontconfig1 libjpeg-turbo8
libjpeg8 liblcms2-2 libnspr4 libnss3 libnss3-nssdb libopts25 libpcsclite1 libpython-stdlib libpython2.7-minimal libpython2.7-stdlib libxi6 libxrender1 libxtst6 ntp
openjdk-8-jre-headless python python-minimal python2.7 python2.7-minimal x11-common
Suggested packages:
cassandra-tools default-jre cups-common liblcms2-utils pcscd ntp-doc libnss-mdns fonts-dejavu-extra fonts-ipafont-gothic fonts-ipafont-mincho fonts-wqy-microhei
fonts-wqy-zenhei fonts-indic python-doc python-tk python2.7-doc binutils binfmt-support
The following NEW packages will be installed:
ca-certificates-java cassandra fontconfig-config fonts-dejavu-core java-common libavahi-client3 libavahi-common-data libavahi-common3 libcups2 libfontconfig1
libjpeg-turbo8 libjpeg8 liblcms2-2 libnspr4 libnss3 libnss3-nssdb libopts25 libpcsclite1 libpython-stdlib libpython2.7-minimal libpython2.7-stdlib libxi6
libxrender1 libxtst6 ntp openjdk-8-jre-headless python python-minimal python2.7 python2.7-minimal x11-common
0 upgraded, 31 newly installed, 0 to remove and 9 not upgraded.
Need to get 63.1 MB of archives.
After this operation, 167 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/main amd64 libjpeg-turbo8 amd64 1.4.2-0ubuntu3.4 [111 kB]
Get:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/main amd64 x11-common all 1:7.7+13ubuntu3.1 [22.9 kB]
Get:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial/main amd64 libxtst6 amd64 2:1.2.2-1 [14.1 kB]
.....
.....
.....Configuring Apache Cassandra :
Needs to configure required variables in cassandra.yaml file ,
cluster_name: Name of the cluster
cluster_name: 'Test Cluster' ( Should be same in all Cassandra nodes ) -seeds: This is a comma-delimited list of the IP address of each node in the cluster
- seeds: "172.31.x.20,172.31.x.21,172.31.x.22,172.31.x.23,172.31.x.24,172.31.x.25"listen_address: This is IP address that other nodes in the cluster will use to connect to this one. It defaults to localhost and needs changed to the IP address of the node
listen_address: 10.225.x.20 ( Cassandra Node 1 Address )rpc_address: This is the IP address for remote procedure calls. It defaults to localhost. If the server’s host name is properly configured, leave this as is. Otherwise, change to server’s IP address or the loop back address (127.0.0.1)
rpc_address: 10.225.x.20 ( Cassandra Node 1 Address )Once updated variables , restart Cassandra cluster in each nodes
Cluster status :
Verify Cassandra running status using below command ,
nodetool status 