Note: Ansible module expect is current considered to be used to run installers in console mode wuth automated answers bropided by Ansible instead of the user. http://docs.ansible.com/ansible/latest/expect_module.html

• Become root ...

$ su -

• See if EPEL repository is already available

$ yum repolist | grep epel

• If there is no results, then:

$ yum -y install epel-release

• Then install Ansible

$ yum -y install ansible

• Once Ansible is installed, make sure it’s working properly

$ ansible --version
ansible x.y.z

• Install git

$ yum -y install git-all

• Clone this Ansible project on the host used to orchestrate deployment

$ cd ~
$ git clone https://github.com/olimatis/otif-ansible
...
$ cd otif-ansible/otif-ansible

• Modify the inventory file according to your cluster Host name (box1, ...) and ip most probably need to be updated.

$ nano inventory/hosts

• Modify the network adapter to use to get proper ip Take not of the adapter to use using 'ip ad' command. This variable is used by role set_hosts to generate a hosts file based on inventory information. We also assume that the same interface name is used on all nodes.

$ nano inventory/group_vars/all.yml
...

network_interface= ????
...

• Set up SSH This command will enable create a user otif-admin on all node and rotate key for SSH access

$ sudo ./ansible-role all set_ssh 

• Set hosts file This will add new entries to /etc/hosts file on each node. Set 'overwrite' to false (default value) if you want to create a file /etc/ansible-hosts for validation before to overwrite the existing hosts file and restart network service.

sudo ./ansible-role all set_hosts -e "overwrite=true"

$ ansible-playbook deploy-otif.yml

1. Check that all system requirements are met

• Get information about processor, os and resources on all hosts

$ ansible-playbook init-nodes.yml -t "get-node-info"

2. Modify Linux PAM limits on all nodes

$ ansible-playbook init-nodes.yml -t "set-limits"

3. Create and 'otif-admin' user on all nodes and enable passwordless ssh with public key for this user

$ ansible-playbook init-nodes.yml -t "set-ssh"

4. Update the hosts file according to the Ansible invetory (inventory/hosts)

• To create a host file with a custom domain with provided network adaper. Overwrite /etc/host and restart network service
• Use '$ ip ad' to know which network adapter is providing access you need. Default is "enp0s3"

$ ansible-playbook init-nodes.yml -t "set-hosts-file" -e "domain=magellan.net network_interface=enp0s3 overwrite=true"

5. Install InfoFusion dependencies

• This playbook (Oracle Java 8, PostgreSQL, MongoDB, Kafka) on nodes where with need according to our inventory.

$ ansible-playbook deploy-otif.yml -t "dependencies"

6. Install InfoFusion Text Mining

$ ansible-role all install_text_mining

7. Install InfoFusion Crawler for Web & Social Media (including PostgreSQL)

$ ansible-role all install_wsm_crawler

8. Install InfoFusion Ingestion Pipeline (including PostgreSQL)

$ TODO

This Ansible role expects that IP addresses have been provided in the Ansible inventory file. By default the /etc/hots file is nor replaced but a file /etc/ansible-hosts is created.

$ ansible-playbook devops-tasks.yml -t "set-hosts-file" -K

$ ansible-playbook deploy-otif.yml -t "set-hosts-file" -e "domain=magellan.net" -K -k

Use '$ ip ad' to know which network adapter is providing access you need. Default is "enp0s3"

$ ansible-playbook deploy-otif.yml -t "set-hosts-file" -e "domain=magellan.net adapter=enp0s3 overwrite=yes" -K -k

$ ansible-playbook deploy-otif.yml -t "set-ssh" -e "username=otif-admin passwrd=magellan" -k

$ ansible-playbook deploy-otif.yml -t "get-node-info" -k

or more directly:

$ ansible-playbook init-nodes.yml -t "get-node-info" -k

• Free momory on all hosts

$  ansible all -m setup -a "filter=ansible_memfree_mb"  -k

• Date & Time ...

$  ansible all -m setup -a "filter=ansible_date_time"  -k

• Linux distribution ... and processor.

$ otif-ansible]$ ansible all -m setup -a "filter=ansible_distribution"  -k
$ otif-ansible]$ ansible all -m setup -a "filter=ansible_processor" -k

• The following command provides all variable that can be read ...

$ ansible all -m setup -k

• The following command shows how you can send a shell command to all hosts

$ ansible all -a "df -h"
# or this one to extract only info for one specific drive
$ ansible all -a "df -h" | awk '/SUCCESS/,/centos-root/'

• Delete a user and home directorty on all nodes

$ sudo ansible all -a "userdel -r otif-admin" -k