In SWARM not able to access service from worker node

Question

I am new to the docker world. During learning I have created the below setup:

1.Virtual machine - Ubuntu 20 running on VMware workstation 15 Player. IP - 192.168.0.106. I am able to access the internet from this VM(say it VM1) and able to ping that system from my physical system OS( Windows 10)

2.Virtual Machine - Ubuntu 20 running on VMware workstation 15 Player. IP - 192.168.0.105. I am able to access the internet from this VM(say it VM2) and able to ping that system from my physical system OS( Windows 10)

3. Now I have created the swarm as follows from VM1:

   sudo docker swarm init --advertise-addr 192.168.0.106:2377 --listen-addr 192.168.0.106:2377

4. Then I added the VM2 in this swarm as follows:

   sudo docker swarm join --token SWMTKN-1-4i56y47l6o4aycrmg7un21oegmfmwnllcsxaf4zxd05ggqg0zh-9qp67bejerq9dhl3f0suaauvl 192.168.0.106:2377 --advertise-addr 192.168.0.105:2377 --listen-addr 192.168.0.105:2377

5. After that I checked the swarm details:

sudo docker node ls

ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION

ogka7rdjohri9elcbjjcpdlbp * ubuntumaster Ready Active Leader 19.03.12

7qu9kiprcz7oowfk2ol31k1mx ubuntuslave Ready Active 19.03.13

6. Then deployed the nginx service as follows from VM1:

   sudo docker service create -d --name myweb1 --mode global -p9090:80 nginx:1.19.3

7. Service status:

   sudo docker service ls

ID NAME MODE REPLICAS IMAGE PORTS

e1o9cbm3e0t myweb1 global 2/2 nginx:1.19.3 *:9090->80/tcp

8. Service details:

sudo docker service ps zf6kfw7aqhag

ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS

egd8oliwngf3 myweb1.ogka7rdjohri9elcbjjcpdlbp nginx:1.19.3 ubuntumaster Running Running 14 minutes ago

1o4q8dlt94jj myweb1.7qu9kiprcz7oowfk2ol31k1mx nginx:1.19.3 ubuntuslave Running Running 14 minutes ago

9. Now I am able to access the nginx from VM1 using URL: 192.168.0.106:9090 and localhost:9090. But I am not able to access nginx from VM2 using URL: 192.168.0.105:9090 and localhost:9090. My understanding that the nginx are running on both the VMs and can be accessible on both.

10. in both the VM1 I am able to see the nginx container is running.

VM1 :

sudo docker container ls

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

7a4e13e49dfd nginx:1.19.3 "/docker-entrypoint.…" 16 minutes ago Up 15 minutes 80/tcp myweb1.ogka7rdjohri9elcbjjcpdlbp.egd8oliwngf35wwpjcieew323

VM2:

sudo docker container ls

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

999062110f0 nginx:1.19.3 "/docker-entrypoint.…" 16 minutes ago Up 16 minutes 80/tcp myweb1.7qu9kiprcz7oowfk2ol31k1mx.1o4q8dlt94jj4uufysnhsbamd

Please guide me on this if I am doing any mistakes.

TIA,

Deb

Answer 1

Problem solved! it was an issue was the ip clashing. Restarted the whole systems including the VM and router to solve this issue.