[o.e.d.z.UnicastZenPing ] [es-coordination] failed to resolve host [master3]

[ravibhooshan]

Hi,
Thanks for this repo. I am trying to build a ES 6.8.23 cluster on 3 node Docker SWARM. I am following your code, but not able to run.
Always get this error:
[2022-02-01T17:48:19,911][WARN ][o.e.d.z.ZenDiscovery ] [es-coordination] not enough master nodes discovered during pinging (found [[]], but needed [2]), pinging again
[2022-02-01T17:48:19,919][WARN ][o.e.d.z.UnicastZenPing ] [es-coordination] failed to resolve host [master1]

Below is stack file.
Can you please help me on figuring out this error.

version: "3.7"

services:
coordination:
image: XXXXXXXX.com:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-coordination
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-coordination
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
ports:
- target: 9200
published: 9200
protocol: tcp
mode: host
deploy:
endpoint_mode: dnsrr
mode: "replicated"
replicas: 2
resources:
limits:
memory: 4G

master1:
image: XXXXXXX.com:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-master1
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-master
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
volumes:
- esmaster1:/usr/share/elasticsearch/data
deploy:
placement:
constraints: [ node.hostname == XXXXXsahdb01 ]
endpoint_mode: dnsrr
mode: "replicated"
replicas: 1
resources:
limits:
memory: 4G

master2:
image: XXXXXXX.com:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-master2
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-master
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
volumes:
- esmaster2:/usr/share/elasticsearch/data
deploy:
placement:
constraints: [ node.hostname == XXXXXsahdb02 ]
endpoint_mode: dnsrr
mode: "replicated"
replicas: 1
resources:
limits:
memory: 4G

master3:
image: XXXXXXX.com:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-master3
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-master
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
volumes:
- esmaster3:/usr/share/elasticsearch/data
deploy:
placement:
constraints: [ node.hostname == XXXXXlsahdb03 ]
endpoint_mode: dnsrr
mode: "replicated"
replicas: 1
resources:
limits:
memory: 4G

data1:
image: XXXXXXXX.com:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-data1
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-data
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
volumes:
- esdata1:/usr/share/elasticsearch/data
deploy:
placement:
constraints: [ node.hostname == XXXXsahdb01 ]
endpoint_mode: dnsrr
mode: "replicated"
replicas: 1
resources:
limits:
memory: 4G
data2:
image: XXXXXXXX.com:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-data2
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-data
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
volumes:
- esdata2:/usr/share/elasticsearch/data
deploy:
placement:
constraints: [ node.hostname == XXXXsahdb02 ]
endpoint_mode: dnsrr
mode: "replicated"
replicas: 1
resources:
limits:
memory: 4G
data3:
image: XXXXXX:8444/elastic:main
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test: curl -fs http://localhost:9200/_cat/health || exit 1
interval: 30s
timeout: 5s
retries: 3
start_period: 45s
configs:
- source: es-data3
target: /usr/share/elasticsearch/config/elasticsearch.yml
- source: jvm-options-data
target: /usr/share/elasticsearch/config/jvm.options
networks:
- esnet
volumes:
- esdata3:/usr/share/elasticsearch/data
deploy:
placement:
constraints: [ node.hostname == XXXXsahdb03 ]
endpoint_mode: dnsrr
mode: "replicated"
replicas: 1
resources:
limits:
memory: 4G

networks:
esnet:
driver: overlay
attachable: true
name: esnet
proxy:
driver: overlay
name: proxy

volumes:
esmaster1:
esmaster2:
esmaster3:

esdata1:
esdata2:
esdata3:

configs:
es-coordination:
name: es-coordination
file: es-config/es-coordination.yml
es-master1:
name: es-master1
file: es-config/es-master1.yml
es-master2:
name: es-master2
file: es-config/es-master2.yml
es-master3:
name: es-master3
file: es-config/es-master3.yml

es-data1:
name: es-data1
file: es-config/es-data1.yml
es-data2:
name: es-data2
file: es-config/es-data2.yml
es-data3:
name: es-data3
file: es-config/es-data3.yml
es-data4:
name: es-data4
file: es-config/es-data4.yml

[Sandeepbharmoria]

Yes , I confirm same issue at my side as well.
The docker file have issues, which I fixed , but still on esnet network master nodes are unable to find each other as per yml files.