ansible-role-elasticsearch/templates/elasticsearch.j2

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

# Elasticsearch home directory
ES_HOME={{es_home}}

# Elasticsearch temp directory
ES_TMPDIR={{ es_tmp_dir }}

# Elasticsearch Java path
{% if es_java_home | length > 0 %}
ES_JAVA_HOME={{ es_java_home }}
{% else %}
#ES_JAVA_HOME=
{% endif %}

# Elasticsearch configuration directory
ES_PATH_CONF={{ es_conf_dir }}

# Elasticsearch PID directory
PID_DIR={{ es_pid_dir }}

# Additional Java OPTS
ES_JAVA_OPTS="{% if es_proxy_host is defined and es_proxy_host != '' %}-Dhttp.proxyHost={{ es_proxy_host }} -Dhttp.proxyPort={{ es_proxy_port }} -Dhttps.proxyHost={{ es_proxy_host }} -Dhttps.proxyPort={{ es_proxy_port }}{% endif %}"

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

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

# SysV init.d
#
# 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
#MAX_OPEN_FILES=65535
{% if es_max_open_files is defined %}
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, LimitMEMLOCK must be set in a unit file such as
# /etc/systemd/system/elasticsearch.service.d/override.conf.
#MAX_LOCKED_MEMORY=unlimited
{% 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 %}