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[Unit]
Description=Elasticsearch %I
Documentation=https://www.elastic.co
Wants=elasticsearch-keystore@%i.service
Wants=network-online.target
After=elasticsearch-keystore@%i.service
After=network-online.target
[Service]
Type=notify
# the elasticsearch process currently sends the notifications back to systemd
# and for some reason exec does not work (even though it is a child). We should change
# this notify access back to main (the default), see https://github.com/elastic/elasticsearch/issues/86475
NotifyAccess=all
RuntimeDirectory=elasticsearch
PrivateTmp=true
Environment=ES_HOME=/usr/share/elasticsearch
Environment=ES_PATH_CONF=/etc/elasticsearch/%I
Environment=PID_DIR=/run/elasticsearch
Environment=ES_SD_NOTIFY=true
EnvironmentFile=-/etc/default/elasticsearch
PIDFile=/run/elasticsearch/%I.pid
WorkingDirectory=/usr/share/elasticsearch
User=elasticsearch
Group=elasticsearch
ExecStartPre=+/usr/share/elasticsearch/bin/elasticsearch-keystore upgrade
ExecStart=/usr/share/elasticsearch/bin/systemd-entrypoint -p ${PID_DIR}/%I.pid --quiet
# StandardOutput is configured to redirect to journalctl since
# some error messages may be logged in standard output before
# elasticsearch logging system is initialized. Elasticsearch
# stores its logs in /var/log/elasticsearch and does not use
# journalctl by default. If you also want to enable journalctl
# logging, you can simply remove the "quiet" option from ExecStart.
StandardOutput=journal
StandardError=inherit
# Specifies the maximum file descriptor number that can be opened by this process
LimitNOFILE=65535
# Specifies the maximum number of processes
LimitNPROC=4096
# Specifies the maximum size of virtual memory
LimitAS=infinity
# Specifies the maximum file size
LimitFSIZE=infinity
# Disable timeout logic and wait until process is stopped
TimeoutStopSec=0
# SIGTERM signal is used to stop the Java process
KillSignal=SIGTERM
# Send the signal only to the JVM rather than its control group
KillMode=process
# Java process is never killed
SendSIGKILL=no
# When a JVM receives a SIGTERM signal it exits with code 143
SuccessExitStatus=143
# Allow a slow startup before the systemd notifier module kicks in to extend the timeout
TimeoutStartSec=75
[Install]
WantedBy=multi-user.target
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