ansible-role-elasticsearch/tasks/elasticsearch-parameters.yml

# Check for mandatory parameters

- fail: msg="es_instance_name must be specified and cannot be blank"
  when: es_instance_name is not defined or es_instance_name == ''

- fail: msg="es_proxy_port must be specified and cannot be blank when es_proxy_host is defined"
  when: (es_proxy_port is not defined or es_proxy_port == '') and (es_proxy_host is defined and es_proxy_host != '')

- set_fact: multi_cast={{ (es_version | version_compare('2.0', '<') and es_config['discovery.zen.ping.multicast.enabled'] is not defined) or (es_config['discovery.zen.ping.multicast.enabled'] is defined and es_config['discovery.zen.ping.multicast.enabled'])}}

- debug: msg="WARNING - It is recommended you specify the parameter 'http.port' when multicast is disabled"
  when: not multi_cast and es_config['http.port'] is not defined

- debug: msg="WARNING - It is recommended you specify the parameter 'transport.tcp.port' when multicast is disabled"
  when: not multi_cast and es_config['transport.tcp.port'] is not defined

- debug: msg="WARNING - It is recommended you specify the parameter 'discovery.zen.ping.unicast.hosts' when multicast is disabled"
  when: not multi_cast and es_config['discovery.zen.ping.unicast.hosts'] is not defined

#If the user attempts to lock memory they must specify a heap size
- fail: msg="If locking memory with bootstrap.mlockall a heap size must be specified"
  when: es_config['bootstrap.mlockall'] is defined and es_config['bootstrap.mlockall'] == True and es_heap_size is not defined

#Check if working with shield we have an es_api_basic_auth_username and es_api_basic_auth_username - otherwise any http calls wont work
- fail: msg="Enabling shield requires an es_api_basic_auth_username and es_api_basic_auth_password to be provided to allow cluster operations"
  when: es_enable_xpack and '"shield" in es_xpack_features' and es_api_basic_auth_username is not defined and es_api_basic_auth_password is not defined

- set_fact: instance_default_file={{default_file | dirname}}/{{es_instance_name}}_{{default_file | basename}}
- set_fact: instance_init_script={{init_script | dirname }}/{{es_instance_name}}_{{init_script | basename}}
- set_fact: conf_dir={{ es_conf_dir }}/{{es_instance_name}}
- set_fact: m_lock_enabled={{ es_config['bootstrap.mlockall'] is defined and es_config['bootstrap.mlockall'] == True }}

#Use systemd for the following distributions:
#Ubuntu 15 and up
#Debian 8 and up
#Centos 7 and up
#Relies on elasticsearch distribution installing a serviced script to determine whether one should be copied.


- set_fact: use_system_d={{(ansible_distribution == 'Debian' and ansible_distribution_version | version_compare('8', '>=')) or (ansible_distribution == 'CentOS' and ansible_distribution_version | version_compare('7', '>=')) or (ansible_distribution == 'Ubuntu' and ansible_distribution_version | version_compare('15', '>=')) }}

- set_fact: instance_sysd_script={{sysd_script | dirname }}/{{es_instance_name}}_{{sysd_script | basename}}
  when: use_system_d
#For directories we also use the {{inventory_hostname}}-{{ es_instance_name }} - this helps if we have a shared SAN.

- set_fact: instance_suffix={{inventory_hostname}}-{{ es_instance_name }}
- set_fact: pid_dir={{ es_pid_dir }}/{{instance_suffix}}
- set_fact: log_dir={{ es_log_dir }}/{{instance_suffix}}
- set_fact: work_dir={{ es_work_dir }}/{{instance_suffix}}
- set_fact: data_dirs={{ es_data_dirs | append_to_list('/'+instance_suffix) }}