Connecting with Portainer: "resource is online but isn't responding to connection attempts" - docker

Question

I installed Ubuntu on an older Laptop. Now there is Docker with Portainer running and I want to access Portainer via my main PC in the same network. When I try to connect to Portainer via my Laptop where it is runnig (not Localhost address) it works fine. But when I try to connect via my PC, I get a timeout. Windows diagnostics says: "resource is online but isn't responding to connection attempts". How can I open Portainer to my local network? Or is this a problem with Ubuntu?

Answer 1

so check if you have openssh server running for ssh! disable firewall on terminal sudo ufw disable check if your network card is running on name eth0 ifconfig if not change following this step below
Using netplan which is the default these days. File /etc/netplan/00-installer-config.yaml file. but b4 you need to get serial/mac
Find the target devices mac/hw address using the lshw command:
lshw -C network
You'll see some output which looks like:
root#ys:/etc# lshw -C network
*-network
description: Ethernet interface
physical id: 2
logical name: eth0
serial: dc:a6:32:e8:23:19
size: 1Gbit/s
capacity: 1Gbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bcmgenet driverversion=5.8.0-1015-raspi duplex=full ip=192.168.0.112 link=yes multicast=yes port=MII speed=1Gbit/s
So then you take the serial
dc:a6:32:e8:23:19
Note the set-name option.
This works for the wifi section as well.
if you using calbe you can delete everything add the example only change for your serial "mac" sudo nano /etc/netplan/00-installer-config.yaml file.
network:
version: 2
ethernets:
eth0:
dhcp4: true
match:
macaddress: <YOUR MAC ID HERE>
set-name: eth0
Then then to test this config run.
netplan try
When your happy with it
netplan apply
reboot you ubuntu
after restart
stop portainer container
sudo docker stop portainer
remove portainer container
sudo docker rm portainer
now run again on the last version
docker run -d -p 8000:8000 -p 9000:9000 \
--name=portainer --restart=always \
-v /var/run/docker.sock:/var/run/docker.sock \
-v portainer_data:/data \
portainer/portainer-ce:2.13.1