Hi,
Looks like the ipv6 listener can’t start.
> =SUPERVISOR REPORT==== 24-Nov-2019::18:36:42.045104 ===
> supervisor: {local,zotonic_sup}
> errorContext: start_error
> reason: eprotonosupport
> offender: [{pid,undefined},
> {id,webmachine_mochiweb_v6},
> {mfargs,
> {webmachine_mochiweb,start,
> [webmachine_mochiweb_v6,
> [{port,8000},
> {ip,any6},
> {dispatcher,z_sites_dispatcher},
> {dispatch_list,[]},
> {backlog,500},
> {acceptor_pool_size,75}]]}},
> {restart_type,permanent},
> {shutdown,5000},
> {child_type,worker}]
We check if ipv6 is available and if it is we start the listener.
This is in zotonic_sup.erl:
> ipv6_supported() ->
> case (catch inet:getaddr("localhost", inet6)) of
> {ok, _Addr} -> true;
> {error, _} -> false
> end.
Apparently the system pretend there is ip6 but doesn’t really support it.
You can disable starting the ipv6 listener by providing a specific listener
port instead of ‘any’ in the zotonic.config
Replace this
> %%% IP address on which Zotonic will listen for HTTP requests.
> %%% Always overridden by the ZOTONIC_IP environment variable.
> %%% Use 'any' for all IP addresses.
> {listen_ip, any},
With this:
> %%% IP address on which Zotonic will listen for HTTP requests.
> %%% Always overridden by the ZOTONIC_IP environment variable.
> %%% Use 'any' for all IP addresses.
> {listen_ip, {0,0,0,0}},
If this fixes the problem then we can look into a better ipv6 detection method.
One of the methods I am thinking of is by actually opening the port before
proceeding.
Cheers, Marc
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