• 2 Posts
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Joined 4 years ago
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Cake day: September 14th, 2021

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  • The only two important columns are “Local address: port” and “process”. The later is what process is listening whille the former is the interface that process is listening on and the port.

    So you see that I don’t have any process listening on any port other than 80 and 443 iin the host and the regular ones.

    That said, you containers will still listen on the ports you want but only on a virtual network interface.

    Basically you only need to publish ports 80 amd 443 on the container or pod you have your reverse proxy on. Other containers need to only be attached to the same network as you already did.



  • For spending, calculate your daily spend limit (monthly income divided by 31) and try not to spend anything more than that any given day. If you need to spend more then you have to save that money from thee day before. Do not lend money from future days. Only accumulate from money not spent in the past. For example your monthly income 3100, then your daily spend limit is 100. You cannot spend 150 and hope that tomorrow you will only spend 50. Do it I. Reverse. Today spend 50. If you manage it, tomorrow spend 100. Only if necessary that you can spend 100 + the 50 you saved the day before.

    Also try getting rid of the pets. I can’t believe you pay insurance for the pet. We do have people that have no insurance even for themselves. I know you love them, but it times are hard. Maybe be give them to someone you know so you can get them back once you are doing better.

    You haven’t spoken much about food but you have cook your own food and snacks. Do not eat out. Do not but snacks. Your health and pocket will thank you. You can have snacks for really cheap. Just find inspiration in the internet or your relatives.


  • It is good you have solved you initial issue. However, as you say, your rules are too permissive. You should not publish ports from containers to the host. Your container ports should only be accessible over reverse-proxy network. Said otherwise <my domain>:3000 should not resolve to anything.

    This can be simply acheive by not publishing any port on your service containers.

    Here is an example of my VPS:

    Exposed ports:

    $ ss -ntlp
    State                Recv-Q               Send-Q                             Local Address:Port                             Peer Address:Port              Process                                                  
    LISTEN               0                    128                                      0.0.0.0:22                                    0.0.0.0:*                  users:(("sshd",pid=4084094,fd=3))                       
    LISTEN               0                    4096                                     0.0.0.0:443                                   0.0.0.0:*                  users:(("conmon",pid=3436659,fd=6))                     
    LISTEN               0                    4096                                     0.0.0.0:5355                                  0.0.0.0:*                  users:(("systemd-resolve",pid=723,fd=11))               
    LISTEN               0                    4096                                     0.0.0.0:80                                    0.0.0.0:*                  users:(("conmon",pid=3436659,fd=5))                     
    LISTEN               0                    4096                                  127.0.0.54:53                                    0.0.0.0:*                  users:(("systemd-resolve",pid=723,fd=19))               
    LISTEN               0                    4096                               127.0.0.53%lo:53                                    0.0.0.0:*                  users:(("systemd-resolve",pid=723,fd=17))  
    

    Redacted list of containers:

    $ podman container ls
    CONTAINER ID  IMAGE                                        COMMAND               CREATED        STATUS                 PORTS                                     NAMES
    [...]
    docker.io/tootsuite/mastodon-streaming:v4.3  node ./streaming      2 months ago   Up 2 months (healthy)                                            social_streaming
    docker.io/eqalpha/keydb:alpine               keydb-server /etc...  2 months ago   Up 2 months (healthy)                                            cloud_cache
    localhost/podman-pause:4.4.1-1111111111                            2 months ago   Up 2 months            0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp  1111111111-infra
    docker.io/library/traefik:3.2                traefik               2 months ago   Up 2 months            0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp  traefik
    docker.io/library/nginx:1.27-alpine          nginx -g daemon o...  3 weeks ago    Up 3 weeks                                                       cloud_web
    docker.io/library/nginx:1.27-alpine          nginx -g daemon o...  3 weeks ago    Up 3 weeks                                                       social_front
    [...]