Question

ElasticSearch Not Starting on Ubuntu 20.04 with 4GB RAM and OpenJDK 11

Posted July 9, 2020 237 views
ElasticsearchUbuntu 20.04

ElasticSearch Not Starting on Ubuntu 20.04 with 4GB RAM and OpenJDK 11

by following https://www.digitalocean.com/community/tutorials/how-to-install-java-with-apt-on-ubuntu-20-04 by this doc

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3 answers

Hi there @technewwings,

What is the exact error that you get?

What I could suggest is following this tutorial here on how to install ElasticSearch on Ubuntu 20.04:

https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-elasticsearch-on-ubuntu-20-04

Regards,
Bobby

by Erin Glass
Elasticsearch is a platform for distributed search and analysis of data in real time. This article will guide you through installing Elasticsearch, configuring it for your use case, securing your installation, and beginning to work with your Elasticsearch server.

Hi I can see the error log like this

sammy@cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01:~$ sudo systemctl start elasticsearch
Job for elasticsearch.service failed because the control process exited with error code.
See "systemctl status elasticsearch.service" and "journalctl -xe" for details.
sammy@cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01:~$ sudo tail -100 /var/log/elasticsearch/elasticsearch.log
    at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:178) [elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:393) [elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170) [elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) [elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127) [elasticsearch-cli-7.8.0.jar:7.8.0]
    at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) [elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-7.8.0.jar:7.8.0]
[2020-07-11T16:10:05,925][WARN ][o.e.b.Natives            ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cannot check if running as root because JNA is not available
[2020-07-11T16:10:05,926][WARN ][o.e.b.Natives            ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cannot install system call filter because JNA is not available
[2020-07-11T16:10:05,926][WARN ][o.e.b.Natives            ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cannot register console handler because JNA is not available
[2020-07-11T16:10:05,931][WARN ][o.e.b.Natives            ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cannot getrlimit RLIMIT_NPROC because JNA is not available
[2020-07-11T16:10:05,931][WARN ][o.e.b.Natives            ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cannot getrlimit RLIMIT_AS because JNA is not available
[2020-07-11T16:10:05,932][WARN ][o.e.b.Natives            ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cannot getrlimit RLIMIT_FSIZE because JNA is not available
[2020-07-11T16:10:06,321][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] version[7.8.0], pid[124014], build[default/deb/757314695644ea9a1dc2fecd26d1a43856725e65/2020-06-14T19:35:50.234439Z], OS[Linux/5.4.0-37-generic/amd64], JVM[AdoptOpenJDK/OpenJDK 64-Bit Server VM/14.0.1/14.0.1+7]
[2020-07-11T16:10:06,323][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] JVM home [/usr/share/elasticsearch/jdk]
[2020-07-11T16:10:06,324][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] JVM arguments [-Xshare:auto, -Des.networkaddress.cache.ttl=60, -Des.networkaddress.cache.negative.ttl=10, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -XX:+ShowCodeDetailsInExceptionMessages, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dio.netty.allocator.numDirectArenas=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.locale.providers=SPI,COMPAT, -Xms1g, -Xmx1g, -XX:+UseG1GC, -XX:G1ReservePercent=25, -XX:InitiatingHeapOccupancyPercent=30, -Djava.io.tmpdir=/tmp/elasticsearch-16716871485915090185, -XX:+HeapDumpOnOutOfMemoryError, -XX:HeapDumpPath=/var/lib/elasticsearch, -XX:ErrorFile=/var/log/elasticsearch/hs_err_pid%p.log, -Xlog:gc*,gc+age=trace,safepoint:file=/var/log/elasticsearch/gc.log:utctime,pid,tags:filecount=32,filesize=64m, -XX:MaxDirectMemorySize=536870912, -Des.path.home=/usr/share/elasticsearch, -Des.path.conf=/etc/elasticsearch, -Des.distribution.flavor=default, -Des.distribution.type=deb, -Des.bundled_jdk=true]
[2020-07-11T16:10:09,655][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [aggs-matrix-stats]
[2020-07-11T16:10:09,655][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [analysis-common]
[2020-07-11T16:10:09,656][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [constant-keyword]
[2020-07-11T16:10:09,656][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [flattened]
[2020-07-11T16:10:09,656][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [frozen-indices]
[2020-07-11T16:10:09,656][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [ingest-common]
[2020-07-11T16:10:09,657][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [ingest-geoip]
[2020-07-11T16:10:09,657][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [ingest-user-agent]
[2020-07-11T16:10:09,657][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [kibana]
[2020-07-11T16:10:09,658][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [lang-expression]
[2020-07-11T16:10:09,658][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [lang-mustache]
[2020-07-11T16:10:09,658][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [lang-painless]
[2020-07-11T16:10:09,658][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [mapper-extras]
[2020-07-11T16:10:09,659][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [parent-join]
[2020-07-11T16:10:09,659][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [percolator]
[2020-07-11T16:10:09,659][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [rank-eval]
[2020-07-11T16:10:09,659][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [reindex]
[2020-07-11T16:10:09,660][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [repository-url]
[2020-07-11T16:10:09,660][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [search-business-rules]
[2020-07-11T16:10:09,660][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [searchable-snapshots]
[2020-07-11T16:10:09,660][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [spatial]
[2020-07-11T16:10:09,661][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [systemd]
[2020-07-11T16:10:09,661][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [tasks]
[2020-07-11T16:10:09,661][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [transform]
[2020-07-11T16:10:09,661][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [transport-netty4]
[2020-07-11T16:10:09,662][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [vectors]
[2020-07-11T16:10:09,662][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-analytics]
[2020-07-11T16:10:09,662][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-async-search]
[2020-07-11T16:10:09,662][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-autoscaling]
[2020-07-11T16:10:09,663][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-ccr]
[2020-07-11T16:10:09,663][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-core]
[2020-07-11T16:10:09,663][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-deprecation]
[2020-07-11T16:10:09,664][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-enrich]
[2020-07-11T16:10:09,664][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-eql]
[2020-07-11T16:10:09,664][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-graph]
[2020-07-11T16:10:09,664][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-identity-provider]
[2020-07-11T16:10:09,664][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-ilm]
[2020-07-11T16:10:09,665][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-logstash]
[2020-07-11T16:10:09,665][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-ml]
[2020-07-11T16:10:09,665][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-monitoring]
[2020-07-11T16:10:09,665][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-ql]
[2020-07-11T16:10:09,666][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-rollup]
[2020-07-11T16:10:09,666][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-security]
[2020-07-11T16:10:09,666][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-sql]
[2020-07-11T16:10:09,666][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-voting-only-node]
[2020-07-11T16:10:09,667][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] loaded module [x-pack-watcher]
[2020-07-11T16:10:09,667][INFO ][o.e.p.PluginsService     ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] no plugins loaded
[2020-07-11T16:10:09,744][INFO ][o.e.e.NodeEnvironment    ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] using [1] data paths, mounts [[/ (/dev/vda1)]], net usable_space [67.8gb], net total_space [77.3gb], types [ext4]
[2020-07-11T16:10:09,745][INFO ][o.e.e.NodeEnvironment    ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] heap size [1gb], compressed ordinary object pointers [true]
[2020-07-11T16:10:09,872][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] node name [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01], node ID [VIIMclatT62b7Hfg5Nl-TA], cluster name [elasticsearch]
[2020-07-11T16:10:16,388][INFO ][o.e.x.s.a.s.FileRolesStore] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] parsed [0] roles from file [/etc/elasticsearch/roles.yml]
[2020-07-11T16:10:17,153][INFO ][o.e.x.m.p.l.CppLogMessageHandler] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] [controller/124205] [Main.cc@110] controller (64 bit): Version 7.8.0 (Build 58ff6912e20047) Copyright (c) 2020 Elasticsearch BV
[2020-07-11T16:10:18,541][INFO ][o.e.d.DiscoveryModule    ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] using discovery type [zen] and seed hosts providers [settings]
[2020-07-11T16:10:20,141][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] initialized
[2020-07-11T16:10:20,147][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] starting ...
[2020-07-11T16:10:20,337][INFO ][o.e.t.TransportService   ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] publish_address {localhost/127.0.0.1:9300}, bound_addresses {127.0.0.1:9300}
[2020-07-11T16:10:20,641][WARN ][o.e.b.BootstrapChecks    ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[2020-07-11T16:10:20,642][WARN ][o.e.b.BootstrapChecks    ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
[2020-07-11T16:10:20,644][INFO ][o.e.c.c.Coordinator      ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] cluster UUID [Yt2MWu65TN2nbaMyiCmlGg]
[2020-07-11T16:10:20,665][INFO ][o.e.c.c.ClusterBootstrapService] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] no discovery configuration found, will perform best-effort cluster bootstrapping after [3s] unless existing master is discovered
[2020-07-11T16:10:20,848][INFO ][o.e.c.s.MasterService    ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] elected-as-master ([1] nodes joined)[{cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01}{VIIMclatT62b7Hfg5Nl-TA}{mTpu48uiSfOkS1J79tVQnw}{localhost}{127.0.0.1:9300}{dilmrt}{ml.machine_memory=4127444992, xpack.installed=true, transform.node=true, ml.max_open_jobs=20} elect leader, _BECOME_MASTER_TASK_, _FINISH_ELECTION_], term: 19, version: 33, delta: master node changed {previous [], current [{cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01}{VIIMclatT62b7Hfg5Nl-TA}{mTpu48uiSfOkS1J79tVQnw}{localhost}{127.0.0.1:9300}{dilmrt}{ml.machine_memory=4127444992, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}]}
[2020-07-11T16:10:20,953][INFO ][o.e.c.s.ClusterApplierService] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] master node changed {previous [], current [{cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01}{VIIMclatT62b7Hfg5Nl-TA}{mTpu48uiSfOkS1J79tVQnw}{localhost}{127.0.0.1:9300}{dilmrt}{ml.machine_memory=4127444992, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}]}, term: 19, version: 33, reason: Publication{term=19, version=33}
[2020-07-11T16:10:21,049][INFO ][o.e.h.AbstractHttpServerTransport] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] publish_address {localhost/127.0.0.1:9200}, bound_addresses {127.0.0.1:9200}
[2020-07-11T16:10:21,050][INFO ][o.e.n.Node               ] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] started
[2020-07-11T16:10:21,052][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01] fatal error in thread [main], exiting
java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native
    at org.elasticsearch.systemd.Libsystemd.lambda$static$0(Libsystemd.java:34) ~[?:?]
    at java.security.AccessController.doPrivileged(AccessController.java:312) ~[?:?]
    at org.elasticsearch.systemd.Libsystemd.<clinit>(Libsystemd.java:33) ~[?:?]
    at org.elasticsearch.systemd.SystemdPlugin.sd_notify(SystemdPlugin.java:126) ~[?:?]
    at org.elasticsearch.systemd.SystemdPlugin.onNodeStarted(SystemdPlugin.java:137) ~[?:?]
    at java.util.ArrayList.forEach(ArrayList.java:1510) ~[?:?]
    at org.elasticsearch.node.Node.start(Node.java:823) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Bootstrap.start(Bootstrap.java:317) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:402) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127) ~[elasticsearch-cli-7.8.0.jar:7.8.0]
    at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) ~[elasticsearch-7.8.0.jar:7.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-7.8.0.jar:7.8.0]
sammy@cyberpanel-ubuntu-s-2vcpu-4gb-blr1-01:~$ 
edited by bobbyiliev
  • Hi there,

    I have not been able to replicate this error at my end, I set up a new Ubuntu 20.04 Droplet, followed the instructions from the tutorial and it worked as expected:

    ● elasticsearch.service - Elasticsearch
         Loaded: loaded (/lib/systemd/system/elasticsearch.service; disabled; vendor preset: enabled)
         Active: active (running) since Thu 2020-07-16 09:41:06 UTC; 8s ago
           Docs: https://www.elastic.co
       Main PID: 15601 (java)
          Tasks: 68 (limit: 4683)
         Memory: 1.2G
         CGroup: /system.slice/elasticsearch.service
                 ├─15601 /usr/share/elasticsearch/jdk/bin/java -Xshare:auto -Des.networkaddress.cache.ttl=60 -Des.networkaddress.cache.negative.ttl=10 -XX:+AlwaysPreTouch -Xss1m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djna.nosys=t>
                 └─15799 /usr/share/elasticsearch/modules/x-pack-ml/platform/linux-x86_64/bin/controller
    
    Jul 16 09:40:50 do-question-bobby systemd[1]: Starting Elasticsearch...
    Jul 16 09:41:06 do-question-bobby systemd[1]: Started Elasticsearch.
    

    Did you have any other packages installed on that Droplet and did you make any other changes to the ElasticSearch installation which could be affecting the service?

    Regards,
    Bobby

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