AKHQ failed to connect issue when running in a Linux RHEL VM

[mtukus]

Hi all,

I run the following command on a Azure RHEL Linux VM: podman run -d --name akhq_mert -p 8080:8080 -v /tmp/application.yml:/app/application.yml docker.io/tchiotludo/akhq:0.23.0

The application.yml I provide is:

micronaut:
  server:
    cors:
      enabled: true
    host: 0.0.0.0
    port: 8080

akhq:
  connections:
    dev:
      properties:
        bootstrap.servers: "20.86.65.24:9092, 20.86.65.62:9092, 20.86.65.203:9092"

Besides host:0.0.0.0 I also tried running 'host' with the values host:localhost and host:public_ip_address_myvm. Port 8080 is opened for outbound and inbound connections in Azure.

However, for each case I can' t open the GUI in my browser through http://publicipvm:8080 and when I inspect my podman container I get:

"Failed to connect to localhost port 8080 after 0 ms: Connection refused"

Has anyone ever faced such a problem?

[tchiotludo]

difficult to debug with the hand on the servers but some highlights:

• by default, akhq listen to 0.0.0.0 on port 8080, so no need to configure it
• we don't validate the hostname by default
• you only need to open the host (which seems to be done with -p 8080:8080)
  So I didn't see any issue at first from what I could see

[mtukus]

Thank you for your quick answer!

I changed the application.yml file to:

micronaut:
server:
cors:
enabled: true

akhq:
connections:
dev:
properties:
bootstrap.servers: "20.86.65.24:9092, 20.86.65.62:9092, 20.86.65.203:9092"

(above linting is correct, but github copy doesnt add the linting)

I killed all my containers and again run the command: podman run -d --name teddy_secondtry -p 8080:8080 -v /tmp/application.yml:/app/application.yml docker.io/tchiotludo/akhq:0.23.0

The output was:

ad2b82233b3d50d3d08164218781d39fc60a4064e22a6b1c039615e786e30fde

Then I checked the logs:

[confluent@rhelmachine1 ~]$ podman logs ad2b82233b3d50d3d08164218781d39fc60a4064e22a6b1c039615e786e30fde

---

| / () ___ _ __ ___ _ __ __ _ _ | |
| |/| | |/ | '/ _ | ' \ / ` | | | | |
| | | | | (| | | () | | | | (| | || | |_
|| |||___|| ___/|| ||_,|_,|__|
Micronaut (v3.7.3)

2023-04-04 07:16:33,897 INFO main i.m.runtime.Micronaut Startup completed in 3520ms. Server Running: http://ad2b82233b3d:8080

---

However, when I try to access the url above through different browsers it doesnt work. Also when I try to access the application through another url such as: http://74.234.141.68:8080 it doesn't work, see image underneath:

Also, I provide you with a picture of my test Azure environment so you can see that I opened the port 8080 for the rhelmachine1 (74.234.141.68) for inbound and outbound traffic.

--

After all this, I run the command: podman inspect ad2b82233b3d50d3d08164218781d39fc60a4064e22a6b1c039615e786e30fde
and I saw this part that got my attention:

"Health": {
"Status": "unhealthy",
"FailingStreak": 13,
"Log": [
{
"Start": "2023-04-04T07:24:38.358840048Z",
"End": "2023-04-04T07:24:38.500503934Z",
"ExitCode": 1,
"Output": " % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\r 0 83 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\ncurl: (22) The requested URL returned error: 404"
},
{
"Start": "2023-04-04T07:25:39.356696405Z",
"End": "2023-04-04T07:25:39.485210989Z",
"ExitCode": 1,
"Output": " % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\r 0 83 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\ncurl: (22) The requested URL returned error: 404"
},
{
"Start": "2023-04-04T07:26:40.356521293Z",
"End": "2023-04-04T07:26:40.49694666Z",
"ExitCode": 1,
"Output": " % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\r 0 83 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\ncurl: (22) The requested URL returned error: 404"
},
{
"Start": "2023-04-04T07:27:41.357104593Z",
"End": "2023-04-04T07:27:41.486833695Z",
"ExitCode": 1,
"Output": " % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\r 0 83 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\ncurl: (22) The requested URL returned error: 404"
},
{
"Start": "2023-04-04T07:28:42.361175546Z",
"End": "2023-04-04T07:28:42.503262939Z",
"ExitCode": 1,
"Output": " % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\r 0 83 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0\ncurl: (22) The requested URL returned error: 404"
}
]
},
"CgroupPath": "/user.slice/user-1000.slice/session-1.scope",
"CheckpointedAt": "0001-01-01T00:00:00Z",
"RestoredAt": "0001-01-01T00:00:00Z"
},

      ------

Is this more useful info for you? Already thanks for you answer, I really appreciate it.

[mtukus]

Solved! Problem was a firewall within the RHEL machine that overrules the Azure firewall.