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ansible-elk

Ansible Playbook for setting up the ELK/EFK Stack and Filebeat client on remote hosts

ELK

What does it do?

  • Automated deployment of a full 6.5+ ELK or EFK stack (Elasticsearch, Logstash/Fluentd, Kibana)
    • 5.6 and 2.4 ELK versions are maintained as branches and master branch will be 6.x currently.
    • Uses Nginx as a reverse proxy for Kibana
    • Generates SSL certificates for Filebeat or Logstash-forwarder
    • Adds either iptables or firewalld rules if firewall is active
    • Tunes Elasticsearch heapsize to half your memory, to a max of 32G
    • Deploys ELK clients using SSL and Filebeat for Logstash (Default)
    • Deploys rsyslog if Fluentd is chosen over Logstash, picks up the same set of OpenStack-related logs in /var/log/*
    • All service ports can be modified in install/group_vars/all.yml
    • Optionally install curator
    • Optionally install Elastic X-Pack Suite
    • This is also available on Ansible Galaxy

Requirements

  • RHEL7 or CentOS7+ server/client with no modifications
  • ELK/EFK server with at least 8G of memory (you can try with less but 5.x series is quite demanding - try 2.4 series if you have scarce resources).
    • Fedora 23 or higher needs to have yum python2 python2-dnf libselinux-python packages.
      • You can run this against Fedora clients prior to running Ansible ELK:
      • ansible fedora-client-01 -u root -m shell -i hosts -a "dnf install yum python2 libsemanage-python python2-dnf -y"
  • You may want to modify vm.swappiness as ELK/EFK is demanding and swapping kills the responsiveness.
    • I am leaving this up to your judgement.
echo "vm.swappiness=10" >> /etc/sysctl.conf
sysctl -p

Notes

  • Current ELK version is 6.x but you can checkout the 5.6 or 2.4 branch if you want that series
  • Sets the nginx htpasswd to admin/admin initially
  • nginx ports default to 80/8080 for Kibana and SSL cert retrieval (configurable)
  • Uses OpenJDK for Java
  • It's fairly quick, takes around 3minutes on a test VM
  • Fluentd can be substituted for the default Logstash
    • Set logging_backend: fluentd in group_vars/all.yml
  • Install curator by setting install_curator_tool: true in install/group_vars/all.yml
  • Install Elastic X-Pack Suite for Elasticsearch, LogStash or Kibana via:
    • install_elasticsearch_xpack: true
    • install_kibana_xpack: true
    • install_logstash_xpack: true
    • Note: Deploying X-Pack will wrap your ES with additional authentication and security, Kibana for example will have it's own credentials now - the default is username: elastic and password: changeme

ELK/EFK Server Instructions

  • Clone repo and setup your hosts file
git clone https://github.com/sadsfae/ansible-elk
cd ansible-elk
sed -i 's/host-01/elkserver/' hosts
sed -i 's/host-02/elkclient/' hosts
  • If you're using a non-root user for Ansible, e.g. AWS EC2 likes to use ec2-user then set the follow below, default is root.
ansible_system_user: ec2-user
  • Run the playbook
ansible-playbook -i hosts install/elk.yml
  • (see playbook messages)
  • Navigate to the ELK at http://host-01:80
  • Default login is:
    • username: admin
    • password: admin

Create your Kibana Index Pattern

  • Next you'll login to your Kibana instance and create a Kibana index pattern.

ELK

  • Note: Sample data can be useful, you can try it later however.

ELK

ELK

ELK

ELK

  • At this point you can setup your client(s) to start sending data via Filebeat/SSL

ELK Client Instructions

  • Run the client playbook against the generated elk_server variable
ansible-playbook -i hosts install/elk-client.yml --extra-vars 'elk_server=X.X.X.X'
  • Once this completes return to your ELK and you'll see log results come in from ELK/EFK clients via filebeat

ELK

5.6 ELK/EFK (Deprecated)

  • The 5.6 series of ELK/EFK is also available, to use this just use the 5.6 branch
git clone https://github.com/sadsfae/ansible-elk
cd ansible-elk
git checkout 5.6

2.4 ELK/EFK (Deprecated)

  • The 2.4 series of ELK/EFK is also available, to use this just use the 2.4 branch
git clone https://github.com/sadsfae/ansible-elk
cd ansible-elk
git checkout 2.4
  • You can view a deployment video here:

Ansible Elk

File Hierarchy

.
├── hosts
├── install
│   ├── elk-client.yml
│   ├── elk.yml
│   ├── group_vars
│   │   └── all.yml
│   └── roles
│       ├── curator
│       │   ├── files
│       │   │   └── curator.repo
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       ├── curator-action.yml.j2
│       │       └── curator-config.yml.j2
│       ├── elasticsearch
│       │   ├── files
│       │   │   ├── elasticsearch.in.sh
│       │   │   └── elasticsearch.repo
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       └── elasticsearch.yml.j2
│       ├── elk_client
│       │   ├── files
│       │   │   └── elk.repo
│       │   └── tasks
│       │       └── main.yml
│       ├── filebeat
│       │   ├── meta
│       │   │   └── main.yml
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       ├── filebeat.yml.j2
│       │       └── rsyslog-openstack.conf.j2
│       ├── firewall
│       │   ├── handlers
│       │   │   └── main.yml
│       │   └── tasks
│       │       └── main.yml
│       ├── fluentd
│       │   ├── files
│       │   │   ├── filebeat-index-template.json
│       │   │   └── fluentd.repo
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       ├── openssl_extras.cnf.j2
│       │       └── td-agent.conf.j2
│       ├── heartbeat
│       │   ├── meta
│       │   │   └── main.yml
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       └── heartbeat.yml.j2
│       ├── instructions
│       │   └── tasks
│       │       └── main.yml
│       ├── kibana
│       │   ├── files
│       │   │   ├── filebeat-dashboards.zip
│       │   │   ├── kibana.repo
│       │   │   └── logstash.repo
│       │   └── tasks
│       │       └── main.yml
│       ├── logstash
│       │   ├── files
│       │   │   ├── filebeat-index-template.json
│       │   │   └── logstash.repo
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       ├── 02-beats-input.conf.j2
│       │       ├── logstash.conf.j2
│       │       └── openssl_extras.cnf.j2
│       ├── metricbeat
│       │   ├── meta
│       │   │   └── main.yml
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       └── metricbeat.yml.j2
│       ├── nginx
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       ├── kibana.conf.j2
│       │       └── nginx.conf.j2
│       ├── packetbeat
│       │   ├── meta
│       │   │   └── main.yml
│       │   ├── tasks
│       │   │   └── main.yml
│       │   └── templates
│       │       └── packetbeat.yml.j2
│       └── xpack
│           └── tasks
│               └── main.yml
└── meta
    └── main.yml

52 directories, 50 files