This tool is made to perform Cassandra Snapshot and store them on a Hadoop cluster.

NOTE: this is currently in development

First of all you need to get the EPEL repository to be able to install pip then:

yum install epel-release

Then, you will need the following packages to get it work:

yum install python python-pip

If you need to build python libraries, you'll need the following packages:

yum install gcc krb5-devel python-devel libcurl-devel

You can use your package manager to install python libraries dependancies or yu can use pip:

pip install -r requirements.txt

A keytab usage is required in order to perform a Kerberos authentication against a Hadoop Cluster. To begin, be sure you've got your krb5.conf updated with your Kerberos server information. Then create a Kerberos client ticket:

$ ktutil
ktutil:  addent -password -p <username>@<DOMAIN> -k 1 -e aes256-cts
Password for <username>@<DOMAIN>: [enter your password]
ktutil:  wkt username.keytab
ktutil:  quit 

You will need 'krb5-workstation' package on Centos to get kinit command.

To finish, request a Kerberos ticket:

kinit <username|principal>@<DOMAIN> -k -t username.keytab

You may encounter issues when you'll want to connect to Kerberos. Following the opened issue requests/requests-kerberos#54, you may need to patch the kerberos_.py library as described here:

@@ -149,6 +149,7 @@
         response.content
         response.raw.release_conn()
 
+        self.deregister(response)
         _r = response.connection.send(response.request, **kwargs)
         _r.history.append(response)

To build dependencies and make an RPM, there is an existing Dockerfile at the root directory of the project. You only need to run it to build everything:

docker build -t cass_snap .
CONTAINER=$(docker run -d -v "`pwd`:/mnt" cass_snap bash -c "cp -Rfv /root/rpmbuild /mnt/")
docker attach $CONTAINER
docker rm -f $CONTAINER

You now have a folder "rpmbuild" with the compiled sources and the RPM.