[Nut-upsuser] Can't get NUT slave to connect to master

[Roger Price]

On Fri, 25 Nov 2016, Jonah Naylor wrote:

> I don't think nut is built with TCP wrappers support, although the 
> package is listed as depending on libwrap...

Why would you have such a dependency if nut didn't use TCP Wrappers?

> I ran this command: ldd /sbin/upsd | grep libwrap.so and it has returned 
> no output.

If I run that command I get

maria:~ # ldd /usr/sbin/upsd
 	linux-vdso.so.1 (0x00007ffff8fa8000)
 	libssl.so.1.0.0 => /lib64/libssl.so.1.0.0 (0x00007f05a4ea6000)
 	libcrypto.so.1.0.0 => /lib64/libcrypto.so.1.0.0 (0x00007f05a4ab9000)
 	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f05a489b000)
 	libc.so.6 => /lib64/libc.so.6 (0x00007f05a44ed000)
 	libdl.so.2 => /lib64/libdl.so.2 (0x00007f05a42e9000)
 	libz.so.1 => /lib64/libz.so.1 (0x00007f05a40d3000)
 	/lib64/ld-linux-x86-64.so.2 (0x00007f05a510e000)
maria:~ #

No mention of libwrap, yet I have TCP wrappers compiled in.

> Does this mean I have to compile from source or is there a way to add 
> the tcp wrapper support?

If your binary does not include TCP Wrappers, then you don't need to add 
it, and you don't need /etc/hosts.allow.  If your binary does include it, 
you need /etc/hosts.allow.  You don't have to have TCP Wrappers, and you 
don't have to recompile.

Does your distribution have a mailing list which could answer the 
configuration question?

Roger