ansible-role-elasticsearch/templates/elasticsearch.j2

################################
# Elasticsearch
################################

# Elasticsearch home directory
ES_HOME={{es_home}}

# Elasticsearch Java path
#JAVA_HOME=

# Elasticsearch configuration directory
CONF_DIR={{ es_conf_dir }}
ES_PATH_CONF={{ es_conf_dir }}

# Elasticsearch data directory
DATA_DIR={{ es_data_dirs | array_to_str }}

# Elasticsearch logs directory
LOG_DIR={{ es_log_dir }}

# Elasticsearch PID directory
PID_DIR={{ es_pid_dir }}

ES_JVM_OPTIONS={{ es_conf_dir }}/jvm.options

# Configure restart on package upgrade (true, every other setting will lead to not restarting)
#ES_RESTART_ON_UPGRADE=true

# Path to the GC log file
#ES_GC_LOG_FILE=/var/log/elasticsearch/gc.log

################################
# Elasticsearch service
################################

# The number of seconds to wait before checking if Elasticsearch started successfully as a daemon process
ES_STARTUP_SLEEP_TIME=5

################################
# System properties
################################

# Specifies the maximum file descriptor number that can be opened by this process
# When using Systemd, this setting is ignored and the LimitNOFILE defined in
# /usr/lib/systemd/system/elasticsearch.service takes precedence
{% if es_max_open_files is defined %}
#MAX_OPEN_FILES
MAX_OPEN_FILES={{es_max_open_files}}
{% endif %}

# The maximum number of bytes of memory that may be locked into RAM
# Set to "unlimited" if you use the 'bootstrap.memory_lock: true' option
# in elasticsearch.yml
# When using Systemd, the LimitMEMLOCK property must be set
# in /usr/lib/systemd/system/elasticsearch.service
#MAX_LOCKED_MEMORY=
{% if m_lock_enabled %}
MAX_LOCKED_MEMORY=unlimited
{% endif %}

# Maximum number of VMA (Virtual Memory Areas) a process can own
# When using Systemd, this setting is ignored and the 'vm.max_map_count'
# property is set at boot time in /usr/lib/sysctl.d/elasticsearch.conf
#MAX_MAP_COUNT=262144
{% if es_max_map_count is defined %}
MAX_MAP_COUNT={{es_max_map_count}}
{% endif %}

# Specifies the maximum number of threads that can be started.
# Elasticsearch requires a minimum of 2048.
{% if es_max_threads is defined %}
MAX_THREADS={{ es_max_threads }}
{% endif %}