Cassandra

Synopsis

Apache Cassandra is an open source distributed database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure. Cassandra offers robust support for clusters spanning multiple datacenters, with asynchronous master less replication allowing low latency operations for all clients.

Cassandra’s data model is a partitioned row store with tunable consistency. Rows are organized into tables; the first component of a table’s primary key is the partition key; within a partition, rows are clustered by the remaining columns of the key. Other columns may be indexed separately from the primary key.

Help Command

This command helps to determine the usage of Cassandra module. The user will come to know about the different way/format to execute this module. This command guides the end user to know the purpose of this command. Below given are the command and the screenshot of the same.

ptconfigure cassandra help

The pictorial representation of the above command is shown below,

kevell@corp:/# ptconfigure cassandra help

******************************


 This command allows you to update Cassandra.

 Cassandra, cassandra

       - install
       Installs the latest version of Cassandra
       example: ptconfigure cassandra install

------------------------------
End Help
******************************

Installation

This command helps in installing Cassandra in system. The below given command will execute the process of installation.

ptconfigure cassandra install

The pictorial representation of the above command is shown below,

kevells@corp:/#  ptconfigure cassandra install

Install Cassandra? (Y/N)
Y
*******************************
*        Pharaoh Tools        *
*         Cassandra!        *
*******************************
Creating /tmp/ptconfigure-temp-script-10553509319.sh
chmod 755 /tmp/ptconfigure-temp-script-10553509319.sh 2>/dev/null
Changing /tmp/ptconfigure-temp-script-10553509319.sh Permissions
Executing /tmp/ptconfigure-temp-script-10553509319.sh
gpg: directory `/home/deepak/.gnupg' created
gpg: new configuration file `/home/deepak/.gnupg/gpg.conf' created
gpg: WARNING: options in `/home/deepak/.gnupg/gpg.conf' are not yet active during this run
gpg: keyring `/home/deepak/.gnupg/secring.gpg' created
gpg: keyring `/home/deepak/.gnupg/pubring.gpg' created
gpg: requesting key 8D77295D from hkp server pgp.mit.edu
gpg: /home/deepak/.gnupg/trustdb.gpg: trustdb created
gpg: key 8D77295D: public key "Eric Evans <eevans@sym-link.com>" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
gpg: requesting key 2B5C1B00 from hkp server pgp.mit.edu
gpg: key 2B5C1B00: public key "Sylvain Lebresne (pcmanus) <sylvain@datastax.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
gpg: requesting key 0353B12C from hkp server pgp.mit.edu
gpg: key 0353B12C: public key "T Jake Luciani <jake@apache.org>" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
W: GPG error: http://packages.elasticsearch.org stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D27D666CD88E42B4
W: GPG error: http://packages.elasticsearch.org stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D27D666CD88E42B4
W: GPG error: http://packages.elasticsearch.org stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D27D666CD88E42B4
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
deb-src http://www.apache.org/dist/cassandra/debian 21x main
OK
OK
OK
Get:1 http://www.apache.org 21x InRelease [3167 B]
Get:2 http://www.apache.org 21x/main amd64 Packages [696 B]
Ign http://extras.ubuntu.com trusty InRelease
Get:3 http://www.apache.org 21x/main i386 Packages [696 B]
Hit http://extras.ubuntu.com trusty Release.gpg
Hit http://extras.ubuntu.com trusty Release
Hit http://extras.ubuntu.com trusty/main Sources
Ign http://www.apache.org 21x/main Translation-en
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Ign http://packages.elasticsearch.org stable InRelease
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Hit http://dl.hhvm.com trusty InRelease
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Hit http://us.archive.ubuntu.com precise Release.gpg
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Get:4 http://packages.elasticsearch.org stable Release.gpg [490 B]
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Hit http://packages.elasticsearch.org stable Release
Ign http://packages.elasticsearch.org stable Release
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Hit http://archive.canonical.com trusty/partner Sources
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Ign http://pkg.jenkins-ci.org binary/ InRelease
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Get:11 http://in.archive.ubuntu.com trusty-updates Release.gpg [933 B]
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Ign http://ppa.launchpad.net trusty InRelease
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Ign http://wireframesketcher.com  InRelease
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Hit http://apt.newrelic.com newrelic Release.gpg
Ign https://repo.varnish-cache.org precise InRelease
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Hit http://ppa.launchpad.net trusty Release
Get:17 https://repo.varnish-cache.org precise Release.gpg
Hit http://wireframesketcher.com  Release
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Ign http://packages.dotdeb.org squeeze/all Translation-en
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Get:18 https://repo.varnish-cache.org precise Release
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Get:20 https://repo.varnish-cache.org precise/varnish-4.0 i386 Packages
Hit http://in.archive.ubuntu.com trusty/main Translation-en
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Ign http://packages.elasticsearch.org stable/main Translation-en
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Get:21 https://repo.varnish-cache.org precise/varnish-4.0 Translation-en
Hit http://packages.elasticsearch.org stable/main amd64 Packages
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Get:22 http://in.archive.ubuntu.com trusty-updates/main Sources [160 kB]
Ign http://packages.elasticsearch.org stable/main Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Get:23 http://security.ubuntu.com trusty-security/restricted amd64 Packages [8875 B]
Get:24 http://security.ubuntu.com trusty-security/universe amd64 Packages [85.3 kB]
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Ign https://repo.varnish-cache.org precise/varnish-4.0 Translation-en
Get:25 http://security.ubuntu.com trusty-security/multiverse amd64 Packages [1161 B]
Hit http://wireframesketcher.com  Packages
Get:26 http://security.ubuntu.com trusty-security/main i386 Packages [190 kB]
Get:27 http://in.archive.ubuntu.com trusty-updates/restricted Sources [2061 B]
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Get:29 http://security.ubuntu.com trusty-security/restricted i386 Packages [8846 B]
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Get:31 http://in.archive.ubuntu.com trusty-updates/multiverse Sources [4502 B]
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Ign http://pkg.jenkins-ci.org binary/ Translation-en
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Ign http://wireframesketcher.com  Translation-en
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Get:34 http://in.archive.ubuntu.com trusty-updates/restricted amd64 Packages [8875 B]
Get:35 http://in.archive.ubuntu.com trusty-updates/universe amd64 Packages [243 kB]
Get:36 http://in.archive.ubuntu.com trusty-updates/multiverse amd64 Packages [11.2 kB]
Get:37 http://in.archive.ubuntu.com trusty-updates/main i386 Packages [399 kB]
Get:38 http://in.archive.ubuntu.com trusty-updates/restricted i386 Packages [8846 B]
Get:39 http://in.archive.ubuntu.com trusty-updates/universe i386 Packages [243 kB]
Get:40 http://in.archive.ubuntu.com trusty-updates/multiverse i386 Packages [11.4 kB]
Hit http://in.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://in.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://in.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit http://in.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://in.archive.ubuntu.com trusty-backports/main Sources
Hit http://in.archive.ubuntu.com trusty-backports/restricted Sources
Hit http://in.archive.ubuntu.com trusty-backports/universe Sources
Hit http://in.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://in.archive.ubuntu.com trusty-backports/main amd64 Packages
Hit http://in.archive.ubuntu.com trusty-backports/restricted amd64 Packages
Hit http://in.archive.ubuntu.com trusty-backports/universe amd64 Packages
Hit http://in.archive.ubuntu.com trusty-backports/multiverse amd64 Packages
Hit http://in.archive.ubuntu.com trusty-backports/main i386 Packages
Hit http://in.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://in.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://in.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://in.archive.ubuntu.com trusty-backports/main Translation-en
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Hit http://in.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://in.archive.ubuntu.com trusty-backports/universe Translation-en
Get:41 http://us.archive.ubuntu.com precise/main Translation-en [726 kB]
Get:42 http://us.archive.ubuntu.com precise/universe Translation-en [3341 kB]
Fetched 10.2 MB in 4min 2s (42.1 kB/s)
Temp File /tmp/ptconfigure-temp-script-10553509319.sh Removed
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free amd64 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-amd64_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://repos.zend.com/zend-server/6.1/deb/ server/non-free i386 Packages (/var/lib/apt/lists/repos.zend.com_zend-server_6.1_deb_dists_server_non-free_binary-i386_Packages)
W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise_main_binary-amd64_Packages)
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W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 amd64 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-amd64_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 amd64 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-amd64_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 amd64 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-amd64_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 amd64 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-amd64_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 amd64 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-amd64_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 amd64 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-amd64_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 i386 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-i386_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 i386 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-i386_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 i386 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-i386_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 i386 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-i386_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 i386 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-i386_Packages)
W: Duplicate sources.list entry https://repo.varnish-cache.org/ubuntu/ precise/varnish-4.0 i386 Packages (/var/lib/apt/lists/repo.varnish-cache.org_ubuntu_dists_precise_varnish-4.0_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
[Pharaoh Logging] Adding Package cassandra from the Packager Apt did not execute correctly
... All done!
*******************************
Thanks for installing , visit www.pharaohtools.com for more
******************************


Single App Installer:
--------------------------------------------
Cassandra: Success
------------------------------
Installer Finished
******************************

Options

Parameters Alternative Parameter Options Comments
ptconfigure cassandra Install There are two alternative parameters which can be used in command line. Cassandra , cassandra Eg: Cleapatra cassandra install Cleapatra Cassandra install Y System starts installation process
ptconfigure cassandra Install There are two alternative parameters which can be used in command line. Cassandra , cassandra Eg: Cleapatra cassandra install Cleapatra Cassandra install| N System stops installation process

Benefits

  • Decentralized - Every node in the cluster has the same role. There is no single point of failure. Data is distributed across the cluster (so each node contains different data), but there is no master as every node can service any request.
  • Supports replication and multi data center replication - Replication strategies are configurable. Cassandra is designed as a distributed system, for deployment of large numbers of nodes across multiple data centers. Key features of Cassandra’s distributed architecture are specifically tailored for multiple-data center deployment, for redundancy, for failover and disaster recovery.
  • Scalability - Read and write throughput both increase linearly as new machines are added, with no downtime or interruption to applications.
  • Fault-tolerant - Data is automatically replicated to multiple nodes for fault-tolerance. Replication across multiple data centers is supported. Failed nodes can be replaced with no downtime.
  • Tunable consistency - Writes and reads offer a tunable level of consistency, all the way from “writes never fail” to “block for all replicas to be readable”, with the quorum level in the middle.
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