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Version Number might change!! The versions of all softwares mentioned here, including Cassandra will change as newer versions are launched.
Download Cassandra Personal Use font for PC/Mac for free, take a test-drive and see the entire character set. Moreover, you can embed it to your website with @font-face support. Mac OS; Eclipse IDE; Maven; Command; How to install Cassandra on MacOS. June 9, 2015 May 23, 2016 Laxmi NoSQL, Terminal. 1) Download the Apache Cassandra from the.
Install Homebrew
Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:
Cassandra free download - Cassandra Project, Cassandra tips and predictions, JRecoverer for Cassandra Passwords, and many more programs. Enter to Search. My Profile Logout.
Install Python
Mac OS X has a copy of Python preinstalled, but this makes sure you get the newest version.
Two Ways to Install Cassandra
A] Using Homebrew (This led to connection refused and compilatoin errors during cassandra and cqlsh startups for me)B] Using Binaries
A] Using Homebrew
Install cql
To use cqlsh, the Cassandra query language shell, you need to install cql:
Install Cassandra
This installs Apache Cassandra:
Starting Cassandra
Mac OS X has a copy of Python preinstalled, but this makes sure you get the newest version.
Two Ways to Install Cassandra
A] Using Homebrew (This led to connection refused and compilatoin errors during cassandra and cqlsh startups for me)B] Using Binaries
A] Using Homebrew
Install cql
To use cqlsh, the Cassandra query language shell, you need to install cql:
Install Cassandra
This installs Apache Cassandra:
Starting Cassandra
At the end of the install, brew will tell you about two ways to launch Cassandra. The first will launch it when the computer restarts, but this isn't recommended because you may not want to always run Cassandra. Instead use this command:
Or even easier:
and to stop:
On Mavericks, Homebrew failed to move the plist file into LaunchAgents. Which gives this error message:
To fix this just issue the following command. Then, try using the launchctl load
command again:
Cassandra file locations
Properties: /usr/local/etc/cassandra
Logs: /usr/local/var/log/cassandra
Data: /usr/local/var/lib/cassandra/data
Finally cqlsh should connect to cassandra:
B] Using Binaries
Here, we use Apache Cassandra as well as it's own bundled cqlsh
tool instead of an external one.We install Cassandra 3.5 as a standalone, single node cluster. A single node cluster is an easy way to get started learning Cassandra on your laptop.
These installation steps show how to install a local copy of Cassandra. The benefits of a local copy are that you do not need root or sudo to install Cassandra, updating versions is quick and easy, and you can control how/when to install updates.
Install the Oracle JDK
Ensure that you have at least Java JDK version 7 installed.
Install 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
:
- data_file_directories: ~/opt/cassandra/data/data
- commitlog_directory: ~/opt/cassandra/data/commitlog
- saved_caches_directory: ~/opt/cassandra/data/saved_caches
The logs
directory is used by logback which is configured via the conf/logback.xml
file.
Add Cassandra to your PATH
Update your PATH to include Cassandra.open -a TextEdit ~/.bash_profile
Paste the following into your .bash_profile
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Source your .bash_profile
file.source .bash_profile
Start the Cassandra server
We're going to run Cassandra in the foreground during development. Cassandra will output a lot of information to the terminal when we start the server. However, this information can be useful during development in case there is a problem with the server.cassandra -f
Press Ctrl + C
when you are ready to stop the server.
Use Apache's bundled cqlsh
One can also use a symlink, but I created an alias in my .zshrc file to point to Cassandra's own cqlsh
tool instead of an external one:
Now type and hit return:
You should see this:
Thanks!
References
A combination of below posts and my own workarounds was used to create this.
- [Download Apache Cassandra] (http://cassandra.apache.org/download/) (This is different from the Datastax distro)
- [Install Cassandra 2.1 on Mac OS X] (http://exponential.io/blog/2015/01/28/install-cassandra-2_1-on-mac-os-x/)
- [This Gist] (https://gist.github.com/Micka33/89897e1490240a56c036)
If you use Mac OS X as your platform for development work, then you may be interested to know how easy it is to use Apache Cassandra on the Mac. The following shows you how to download and setup Cassandra, its utilities, and also use DataStax OpsCenter, which is a browser-based, visual management and monitoring tool for Cassandra.
Download the Software
DataStax makes available the DataStax Community Edition, which contains the latest community version of Apache Cassandra, along with the Cassandra Query Language (CQL) utility, and a free edition of DataStax OpsCenter. To get Datastax Community Edition, go to Planet Cassandra and download both Cassandra and OpsCenter, and select the tar downloads of both the DataStax Community Server and OpsCenter. You can also use the curl
command on Mac to directly download the files to your machine. For example, to download the DataStax Community Server, you could enter the following at terminal prompt: curl -OL http://downloads.datastax.com/community/dsc.tar.gz
Install Cassandra
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Once your download of Cassandra finishes, move the file to whatever directory you'd like to use for testing Cassandra. Then uncompress the file (whose name will change depending on the version you're downloading):
Then switch to the new Cassandra bin directory and start up Cassandra:
Now that you have Cassandra running, the next thing to do is connect to the server and begin creating database objects. This is done with the Cassandra Query Language (CQL) utility. CQL is a very SQL-like language that lets you create objects as you're likely used to doing in the RDBMS world. The CQL utility (cqlsh) is in the same bin directory as the cassandra executable:
[cqlsh 2.3.0 | Cassandra 1.2.2 | CQL spec 3.0.0 | Thrift protocol 19.35.0]
Cassandra has the concept of a keyspace, which is similar to a database in a RDBMS. A keyspace holds data objects and is the level where you specify options for a data partitioning and replication strategy. For this brief introduction, we'll just create a basic keyspace to hold some example data objects we'll create:
Download Cassandra Mac
Now that you have a keyspace created, it's time to create a data object to store data. Because Cassandra is based on Google Bigtable, you'll use column families /tables to store data. Tables in Cassandra are similar to RDBMS tables, but are much more flexible and dynamic. Cassandra tables have rows like RDBMS tables, but they are a sparse column type of object, meaning that rows in a column family can have different columns depending on the data you want to store for a particular row. Let's create a base table to hold employee data:
The column family is named emp and contains four columns, including the employee ID, which acts as the primary key of the table. Note that a column family must have a primary key that's used for initial query activity. Let's now go ahead and insert data into our new column family using the CQL INSERT command:
Notice how Cassandra's CQL is literally identical to the RDBMS INSERT command. Other DML statements are as well:
Querying data uses the familiar SELECT statement:
However, look what happens when you try to use a WHERE predicate and reference a non-primary key column:
In Cassandra, if you want to query columns other than the primary key, you need to create a secondary index on them:
Installing and using DataStax OpsCenter
Installing DataStax OpsCenter on Mac involves working through the following steps in a terminal window:
- Untar the package (
tar –xzf
) in the directory you want to use for OpsCenter. - Change directories to the OpsCenter home bin directory, and run the
./setup.py
script. - You can now start the primary OpsCenter process in the background by entering the command
./opscenter &
from the bin directory. - Now you need to get the agent configured to monitor the Cassandra instance you likely already have running on your Mac. Change to the agent/bin directory and run the setup script passing the localhost IP (usually 127.0.0.1) twice:
./setup 127.0.0.1 127.0.0.1
. - Start the agent from the agent/bin directory:
./datastax-agent
. - Open either a Firefox, Chrome, or Safari web browser and enter the following in the address bar: http://127.0.0.1:8888/opscenter/index.html.
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Conclusion
That's it – you've now got Cassandra and DataStax OpsCenter installed and running on your Mac. Intel q45 q43 express chipset driver windows 10. For other software such as various application drivers and client libraries, visit the DataStax downloads page.