How to install Apache Cassandra in Ubuntu
To install Apache Cassandra in Ubuntu
Apache Cassandra is a NoSQL database designed for storing large amounts of data. In this each node acts a cluster. NoSQL refers to a database with a data model other than the tabular relations used in relational databases such as MySQL, PostgreSQL, and Microsoft SQL. The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance.
Installation of Oracle JDK
Utilize the following command to install Oracle JDK.
root@linuxhelp:~# add-apt-repository -y ppa:webupd8team/java
gpg: keyring `/tmp/tmpyjqbv0pc/secring.gpg' created
gpg: keyring `/tmp/tmpyjqbv0pc/pubring.gpg' created
gpg: requesting key EEA14886 from hkp server keyserver.ubuntu.com
gpg: /tmp/tmpyjqbv0pc/trustdb.gpg: trustdb created
gpg: key EEA14886: public key " Launchpad VLC" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK
After adding the PPA, use the below command to update and install Java.
root@linuxhelp:~# apt-get update Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB] Hit:2 http://in.archive.ubuntu.com/ubuntu xenial InRelease Hit:3 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease Hit:4 http://in.archive.ubuntu.com/ubuntu xenial-updates InRelease Hit:5 http://in.archive.ubuntu.com/ubuntu xenial-backports InRelease Fetched 94.5 kB in 1s (60.6 kB/s) Reading package lists... Done root@linuxhelp:~# apt-get install oracle-java8-installer Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: gsfonts-x11 java-common Suggested packages: binfmt-support visualvm ttf-baekmuk | ttf-unfonts | ttf-unfonts-core ttf-kochi-gothic | ttf-sazanami-gothic ttf-kochi-mincho | ttf-sazanami-mincho ttf-arphic-uming The following NEW packages will be installed: gsfonts-x11 java-common oracle-java8-installer 0 upgraded, 3 newly installed, 0 to remove and 396 not upgraded. Need to get 38.6 kB of archives. After this operation, 227 kB of additional disk space will be used. Do you want to continue? [Y/n] y . . . Length: 181352138 (173M) [application/x-gzip] Saving to: ‘ jdk-8u101-linux-x64.tar.gz’ 0K ........ ........ ........ ........ ........ ........ 1% 249K 11m39s 3072K ........ ........ ........ ........ ........ ........ 3% 361K 9m40s 6144K ........ ........ ........ ........ ........ ........ 5% 370K 8m51s 9216K ........ ........ ........ ........ ........ ........ 6% 197K 10m0s 12288K ........ ........ ........ ........ ........ ........ 8% 146K 11m32s 15360K ........ ........ ........ ........ ........ ........ 10% 317K 10m49s 18432K ........ ........ ........ ........ ........ ........ 12% 465K 9m54s 21504K ........ ........ ........ ........ ........ ........ 13% 239K 9m49s 24576K ........ ........ ........ ........ ........ ........ 15% 508K 9m6s 27648K ........ ........ ........ ........ ........ ........ 17% 608K 8m25s 30720K ........ ........ ........ ........ ........ ........ 19% 468K 7m57s . . . update-alternatives: using /usr/lib/jvm/java-8-oracle/bin/xjc to provide /usr/bin/xjc (xjc) in auto mode Oracle JDK 8 installed update-alternatives: using /usr/lib/jvm/java-8-oracle/jre/lib/amd64/libnpjp2.so to provide /usr/lib/mozilla/plugins/libjavaplugin.so (mozilla-javaplugin.so) in auto mode Oracle JRE 8 browser plugin installed Setting up gsfonts-x11 (0.24) ...
Installation of Cassandra
Create a directory inside the location " /opt" and change the current directory as shown below.
root@linuxhelp:~# mkdir -p ~/opt/packages
root@linuxhelp:~# cd ~/opt/packages/
After creating the directory, download the Apache Cassandra binary files from the website.
root@linuxhelp:~/opt/packages# wget http://mirrors.koehn.com/apache/cassandra/3.9/apache-cassandra-3.9-bin.tar.gz
--2016-10-07 15:30:40-- http://mirrors.koehn.com/apache/cassandra/3.9/apache-cassandra-3.9-bin.tar.gz
Resolving mirrors.koehn.com (mirrors.koehn.com)... 74.91.25.210, 2604:4300:a:22::2
Connecting to mirrors.koehn.com (mirrors.koehn.com)|74.91.25.210|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 36719829 (35M) [application/x-gzip]
Saving to: ‘ apache-cassandra-3.9-bin.tar.gz’
apache-cassandra-3.9-bin.t 100%[=====================================> ] 35.02M 274KB/s in 2m 21s
2016-10-07 15:33:12 (254 KB/s) - ‘ apache-cassandra-3.9-bin.tar.gz’ saved [36719829/36719829]
Extract the downloaded binary files.
root@linuxhelp:~/opt/packages# tar -xzf apache-cassandra-3.9-bin.tar.gz
Create the soft link for Apache-Cassandra, by running the following command.
root@linuxhelp:~/opt/packages# ln -s ~/opt/packages/apache-cassandra-3.9 ~/opt/cassandra
Create data directories for Cassandra In this step we need to create several directories that are used by Cassandra. Each directory is used by the following configuration variable in conf/cassandra.yaml:
&bull data_file_directories: ~/opt/cassandra/data/data &bull commitlog_directory: ~/opt/cassandra/data/commitlog &bull saved_caches_directory: ~/opt/cassandra/data/saved_caches
The logs directory is used by logback which is configured via the conf/logback.xml file.
root@linuxhelp:~/opt/packages# mkdir -p ~/opt/cassandra/data/data
root@linuxhelp:~/opt/packages# mkdir -p ~/opt/cassandra/data/commitlog
root@linuxhelp:~/opt/packages# mkdir -p ~/opt/cassandra/data/saved_caches
root@linuxhelp:~/opt/packages# mkdir -p ~/opt/cassandra/logs
Start the Cassandra servers.
root@linuxhelp:~/opt/packages# ~/opt/cassandra/bin/cassandra -f -R
CompilerOracle: dontinline org/apache/cassandra/db/Columns$Serializer.deserializeLargeSubset (Lorg/apache/cassandra/io/util/DataInputPlus Lorg/apache/cassandra/db/Columns I)Lorg/apache/cassandra/db/Columns
CompilerOracle: dontinline org/apache/cassandra/db/Columns$Serializer.serializeLargeSubset (Ljava/util/Collection ILorg/apache/cassandra/db/Columns ILorg/apache/cassandra/io/util/DataOutputPlus )V
CompilerOracle: dontinline org/apache/cassandra/db/Columns$Serializer.serializeLargeSubsetSize (Ljava/util/Collection ILorg/apache/cassandra/db/Columns I)I
CompilerOracle: dontinline org/apache/cassandra/db/transform/BaseIterator.tryGetMoreContents ()Z
CompilerOracle: dontinline org/apache/cassandra/db/transform/StoppingTransformation.stop ()V
.
.
INFO 10:17:53 Starting listening for CQL clients on localhost/127.0.0.1:9042 (unencrypted)...
INFO 10:17:53 Not starting RPC server as requested. Use JMX (StorageService-> startRPCServer()) or nodetool (enablethrift) to start it
INFO 10:18:02 Scheduling approximate time-check task with a precision of 10 milliseconds
Lets start with Cassandra by login to Cassandra with the CQL shell cqlsh.
user1@linuxhelp:~$ sudo su [sudo] password for user1: root@linuxhelp:/home/user1# cd root@linuxhelp:~# pwd /root root@linuxhelp:~# ~/opt/cassandra/bin/cqlsh Connected to Test Cluster at 127.0.0.1:9042. [cqlsh 5.0.1 | Cassandra 3.9 | CQL spec 3.4.2 | Native protocol v4] Use HELP for help. cqlsh> cqlsh> help Documented shell commands: =========================== CAPTURE CLS COPY DESCRIBE EXPAND LOGIN SERIAL SOURCE UNICODE CLEAR CONSISTENCY DESC EXIT HELP PAGING SHOW TRACING CQL help topics: ================ AGGREGATES CREATE_KEYSPACE DROP_TRIGGER TEXT ALTER_KEYSPACE CREATE_MATERIALIZED_VIEW DROP_TYPE TIME ALTER_MATERIALIZED_VIEW CREATE_ROLE DROP_USER TIMESTAMP ALTER_TABLE CREATE_TABLE FUNCTIONS TRUNCATE ALTER_TYPE CREATE_TRIGGER GRANT TYPES ALTER_USER CREATE_TYPE INSERT UPDATE APPLY CREATE_USER INSERT_JSON USE ASCII DATE INT UUID BATCH DELETE JSON BEGIN DROP_AGGREGATE KEYWORDS BLOB DROP_COLUMNFAMILY LIST_PERMISSIONS BOOLEAN DROP_FUNCTION LIST_ROLES COUNTER DROP_INDEX LIST_USERS CREATE_AGGREGATE DROP_KEYSPACE PERMISSIONS CREATE_COLUMNFAMILY DROP_MATERIALIZED_VIEW REVOKE CREATE_FUNCTION DROP_ROLE SELECT CREATE_INDEX DROP_TABLE SELECT_JSON cqlsh>
Tag :
Cassandra
Gokul
Sep 10 2018
Could you please post the Complete Error
akashmusale
Sep 10 2018
No appropriate python interpreter found.
please solve the error
Q
What is Apache Cassandra?
A
*Apache Cassandra is a NoSQL database designed for storing large amounts of data
* The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance
* The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance
Q
How can we start the cassendra server?
A
Let's start with Cassandra by login to Cassandra with the CQL shell cqlsh
Q
How to Create the soft link for Apache-Cassandra in Ubuntu?
A
by run the following command
# ln -s ~/opt/packages/apache-cassandra-3.9 ~/opt/cassandra
# ln -s ~/opt/packages/apache-cassandra-3.9 ~/opt/cassandra
Q
Why bootstrapping a new node fails with a “Stream failed” error?
A
the GC may be creating long pauses disrupting the streaming process
compactions happening in the background hold streaming long enough that the TCP connection fails
In the first case, regular GC tuning advices apply. In the second case, you need to set TCP keepalive to a lower value (default is very high on Linux). Try to just run the following:
$ sudo /sbin/sysctl -w net.ipv4.tcp_keepalive_time=60 net.ipv4.tcp_keepalive_intvl=60 net.ipv4.tcp_keepalive_probes=5
compactions happening in the background hold streaming long enough that the TCP connection fails
In the first case, regular GC tuning advices apply. In the second case, you need to set TCP keepalive to a lower value (default is very high on Linux). Try to just run the following:
$ sudo /sbin/sysctl -w net.ipv4.tcp_keepalive_time=60 net.ipv4.tcp_keepalive_intvl=60 net.ipv4.tcp_keepalive_probes=5
Q
Nodetool says “Connection refused to host: 127.0.1.1” for any remote host. What gives?
A
If you are not using DNS, then make sure that your /etc/hosts files are accurate on both ends. If that fails, try setting the -Djava.rmi.server.hostname= JVM option near the bottom of cassandra-env.sh to an interface that you can reach from the remote machine.