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Re: what's the right way to resolve localhost's IPs

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On 23/3/23 07:33, Greg Wooledge wrote:
> On Thu, Mar 23, 2023 at 07:06:55AM +0800, Jeremy Ardley wrote:
>> I am the guilty party who had docker. I have not raised any issue about it. The instance is not used any more and was an experiment in running nextcloud on an arm server
> Then perhaps you can enlighten me: why does anyone (Docker user or
> otherwise) need to write a shell script to list the IPv4 addresses
> of the local system's network interfaces?
>
> I can't think of any reasons other than "I want to update dynamic DNS"
> (for which a dhclient hook is better suited, with the new IP address
> being supplied in the environment), or "I need to use it to set up
> firewall rules", a topic with which I'll admit I'm not very experienced,
> but which doesn't seem particularly important on exposed servers.  I
> would think you'd simply shut down all the services you don't want
> running, rather than leaving them in place but trying to block them
> with a firewall.
>
I am not the op. I mistakenly used an old server to illustrate how to 
extract ip addresses and it just happened it had been used once to run 
nextcloud in docker.

On your second topic I don't usually run firewalls on my cloud severs. 
In the AWS case they do it for you and in the linode case I just run the 
minimum services required.

-- 
Jeremy
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what's the right way to resolve localhost's IPs fh@dnsbed.com - 2023-03-22 02:20 +0100
  Re: what's the right way to resolve localhost's IPs Jeremy Ardley <jeremy@ardley.org> - 2023-03-22 03:10 +0100
    Re: what's the right way to resolve localhost's IPs fh@dnsbed.com - 2023-03-22 03:40 +0100
    Re: what's the right way to resolve localhost's IPs Gregory Seidman <gsslist+debian@anthropohedron.net> - 2023-03-22 21:40 +0100
    Re: what's the right way to resolve localhost's IPs Tom Furie <tom@furie.org.uk> - 2023-03-22 22:20 +0100
      Re: what's the right way to resolve localhost's IPs Greg Wooledge <greg@wooledge.org> - 2023-03-22 22:50 +0100
        Re: what's the right way to resolve localhost's IPs Jeremy Ardley <jeremy@ardley.org> - 2023-03-23 00:10 +0100
          Re: what's the right way to resolve localhost's IPs Greg Wooledge <greg@wooledge.org> - 2023-03-23 00:40 +0100
            Re: what's the right way to resolve localhost's IPs Jeremy Ardley <jeremy@ardley.org> - 2023-03-23 01:00 +0100
              Re: what's the right way to resolve localhost's IPs Nicolas George <george@nsup.org> - 2023-03-23 08:50 +0100
                Re: what's the right way to resolve localhost's IPs Jeremy Ardley <jeremy@ardley.org> - 2023-03-23 09:00 +0100
                Re: what's the right way to resolve localhost's IPs Lee <ler762@gmail.com> - 2023-03-23 12:00 +0100
  Re: what's the right way to resolve localhost's IPs Emanuel Berg <incal@dataswamp.org> - 2023-03-30 07:50 +0200
    Re: what's the right way to resolve localhost's IPs fh@dnsbed.com - 2023-03-30 10:10 +0200

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