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ansible-dse

Best Practices for installing Datastax Enterprise

Currently no disk formating occurs but will likely be added soon for provisioning a data dir

Instructions:

When provisioning DSE on existing infrastructure:

  • Edit inventory/hosts to include all hosts you expect to install DSE on

  • Edit playbooks/groupvars/all

    name your cluster
     cluster_name: testcluster

    replace user and pass with your datastax credentials to use repo:
     dserepouser: 'user'
     dserepopass: 'pass'

    if necessary replace these with your internal and external net device names
     external_int: 'eth0'
     internal_int: 'eth1'

    JMX is not currently enabled in the code but here for future use
     jmxuser: cassandra
     jmxpass: cassandra

bash dse-dedicated.sh

To provision Rackspace public cloud use these steps:

To customize, change the variables under playbooks/group_vars/cassandra-nodes:

modify cloud_nodes_count to control the number of nodes in your cluster

[Requirements] (id:requirements)

  • Ansible >= 1.9.2

  • Expects CentOS 7

  • Building the cloud environment requires the pyrax Python module: https://github.com/rackspace/pyrax

    Also recommended is to run pip install oslo.config netifaces.

  • The cloud environment requires the standard pyrax credentials file that looks like this:

    [rackspace_cloud]
username = my_username
api_key = 01234567890abcdef

    This file will be referenced in playbooks/group_vars/all (the rax_credentials_file variable).

    By default, the file is expected to be: ~/.raxpub

[Scripts] (id:scripts)

To provision a cloud environment, run the provision_rax.sh script after you've customized the variables under:

bash provision_rax.sh

bash dse-rax.sh

[Additionally] (id:additionally)

All firewall rules provided here allow the cluster to access itself and only allows ssh access from outside.

Opscenter is configured to be installed on the first server alpha-numerically in the list.

to access opscenter:

ssh -D 12345 root@{{ opscenter-node }}

configure a browser to use localhost port 12345 as socks proxy

browse to the opscenter node ip port 8888