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

---

# Configure Elasticsearch Node

- set_fact: pid_dir={{es_pid_dir}}/{{inventory_hostname}}-{{ es_instance_name }}

- set_fact: data_dir={{ es_data_dir }}/{{inventory_hostname}}-{{ es_instance_name }}

- set_fact: log_dir={{ es_log_dir }}/{{inventory_hostname}}-{{ es_instance_name }}

- set_fact: work_dir={{ es_work_dir }}/{{inventory_hostname}}-{{ es_instance_name }}


# Create an instance specific default file
- name: Copy Default File for Instance
  command: creates={{instance_default_file}} cp "{{default_file}}"  "{{instance_default_file}}"
  when: instance_default_file != default_file

# Create an instance specific init file
- name: Copy Init File for Instance
  command: creates={{instance_init_script}} cp "{{init_script}}" "{{instance_init_script}}"
  when: instance_init_script != init_script

#Create Config directory
- name: Create Config Directory
  file: path={{ instance_config_directory }} state=directory owner={{ es_user }} group={{ es_group }}

#Copy the config template
- name: Copy configuration file
  template: src=elasticsearch.yml.j2 dest={{instance_config_directory}}/elasticsearch.yml owner={{ es_user }} group={{ es_group }} mode=0644 force=yes

# Apply changes to the default file for this instance
- name: Configure config directory
  lineinfile: dest={{instance_default_file}} regexp="^CONF_DIR" insertafter="^#CONF_DIR" line="CONF_DIR={{ instance_config_directory }}"
  register: elasticsearch_configure

- name: Configure config file
  lineinfile: dest={{instance_default_file}} regexp="^CONF_FILE" insertafter="^#CONF_FILE" line="CONF_FILE={{ instance_config_directory }}/elasticsearch.yml"
  register: elasticsearch_configure

- name: Configure memory in defaults
  lineinfile: dest={{instance_default_file}} regexp="^ES_HEAP_SIZE" insertafter="^#ES_HEAP_SIZE" line="ES_HEAP_SIZE={{ es_heap_size }}"
  when: es_heap_size is defined
  register: elasticsearch_configure

- name: Remove memory in defaults
  lineinfile: dest={{instance_default_file}} regexp="^ES_HEAP_SIZE" line="ES_HEAP_SIZE=" state=absent
  when: es_heap_size is not defined
  register: elasticsearch_configure

- debug: msg="{{elasticsearch_configure}}"

#We only have to set these if they are specified. The start scripts will by default set this value.
- name: Configure max open files
  lineinfile: dest={{instance_default_file}} regexp="^MAX_OPEN_FILES" insertafter="^#MAX_OPEN_FILES" line="MAX_OPEN_FILES={{ es_max_open_files }}"
  when: es_max_open_files is defined
  register: elasticsearch_configure

#If the setting is not specified we remove it if its present.  This will mean it reverts to the value in the init script.
- name: Remove max open files
  lineinfile: dest={{instance_default_file}} regexp="^MAX_OPEN_FILES" line="MAX_OPEN_FILES=" state=absent
  when: es_max_open_files is not defined
  register: elasticsearch_configure

#For directories we also use the {{inventory_hostname}}-{{ es_instance_name }} - this helps if we have a shared SAN.

#Create PID directory
- name: Create PID Directory
  file: path={{ pid_dir }} state=directory owner={{ es_user }} group={{ es_group }}

- name: Configure PID directory
  lineinfile: dest={{instance_default_file}} regexp="^PID_DIR" insertafter="^#PID_DIR" line="PID_DIR={{ pid_dir }}"
  register: elasticsearch_configure

#include the host name as potentially shared SAN
- name: Create data dir
  file: state=directory path={{ data_dir }} owner={{ es_user }} group={{ es_group }}

- name: Configure data store
  lineinfile: dest={{instance_default_file}} regexp="^DATA_DIR" insertafter="^#DATA_DIR" line="DATA_DIR={{ data_dir }}"
  register: elasticsearch_configure

- name: Create work dir
  file: state=directory path={{ work_dir }} owner={{ es_user }} group={{ es_group }}

- name: Configure work directory
  lineinfile: dest={{instance_default_file}} regexp="^WORK_DIR" insertafter="^#WORK_DIR" line="WORK_DIR={{ work_dir }}"
  register: elasticsearch_configure

- name: Create log dir
  file: state=directory path={{ log_dir }} owner={{ es_user }} group={{ es_group }}

- name: Configure log directory
  lineinfile: dest={{instance_default_file}} regexp="^LOG_DIR" insertafter="^#LOG_DIR" line="LOG_DIR={{ log_dir }}"
  register: elasticsearch_configure

#required so that the ES_HOME does not change between instances

- name: Configure elasticsearch home
  lineinfile: dest={{instance_default_file}} regexp="^ES_HOME" insertafter="^#ES_HOME" line="ES_HOME={{es_home}}"
  register: elasticsearch_configure

- name: Configure elasticsearch user
  lineinfile: dest={{instance_default_file}} regexp="^ES_USER" insertafter="^#ES_USER" line="ES_USER={{ es_user }}"
  when: es_user is defined
  register: elasticsearch_configure

- name: Configure elasticsearch group
  lineinfile: dest={{instance_default_file}} regexp="^ES_GROUP" insertafter="^#ES_GROUP" line="ES_GROUP={{ es_group }}"
  when: es_group is defined
  register: elasticsearch_configure

#Apply changes to init script - NAME can be changed in Debian start script
- name: Name Node in Init Script
  lineinfile: dest={{instance_init_script}} regexp="^NAME" line="NAME={{es_instance_name}}_{{default_file | basename}}"
  register: elasticsearch_configure
  when: ansible_os_family == 'Debian'

- debug: msg="For {{ instance_init_script }} using default {{ instance_default_file }}"

- name: Environment in Init Script
  lineinfile: dest={{instance_init_script}} regexp="^ES_ENV_FILE" line="ES_ENV_FILE={{instance_default_file}}"
  register: elasticsearch_configure
  when: ansible_os_family == 'RedHat'

#Copy the logging.yml
- name: Copy Logging.yml for Instance
  command: creates={{instance_config_directory}}/logging.yml cp "{{ es_conf_dir }}/logging.yml" "{{instance_config_directory}}/logging.yml"
  when: instance_init_script != init_script

- file: path={{instance_config_directory}}/logging.yml state=touch owner={{ es_user }} group={{ es_group }}
  changed_when: false

- set_fact: m_lock_enabled={{ es_config['bootstrap.mlockall'] is defined and es_config['bootstrap.mlockall'] == True }}

#Configure mlock if enabled
- name: Configure mlock
  lineinfile: dest={{instance_default_file}} regexp="^MAX_LOCKED_MEMORY" insertafter="^#MAX_LOCKED_MEMORY" line="MAX_LOCKED_MEMORY=unlimited"
  when: m_lock_enabled
  register: elasticsearch_configure

#Removed mlock if not enabled and present
- name: Remove mlock
  lineinfile: dest={{instance_default_file}} regexp="^MAX_LOCKED_MEMORY" line="MAX_LOCKED_MEMORY=unlimited" state=absent
  when: not m_lock_enabled

- stat: path=/usr/lib/systemd/system/elasticsearch.service
  register: systemd_service
  when: m_lock_enabled

#Change for systemd setting to ensure mlock is achieved
- name: Configure systemd
  lineinfile: dest=/usr/lib/systemd/system/elasticsearch.service regexp="^LimitMEMLOCK" insertafter="^#LimitMEMLOCK" line="LimitMEMLOCK=infinity"
  when: m_lock_enabled and systemd_service.stat.exists == True
  register: elasticsearch_configure

#Remove setting if mlock is disabled
- name: Remove systemd
  lineinfile: dest=/usr/lib/systemd/system/elasticsearch.service regexp="^LimitMEMLOCK" line="LimitMEMLOCK=infinity" state=absent
  when: not m_lock_enabled