Cannot find localhost

Hi,

I've installed an old version of Corel Linux / Debian on my PC and I wanted
to try the webserver Apache. When I start the webserver, however I get an
error in the logfile, something like 'cannot resolve
gethostbyname("catbert5")'. The webserver isn't running afterwards even
after I do a 'Apache start' so the error must be critical.

I believe it's a DNS error but I don't know how to solve the problem.

Thanks in advance!

"Dr. O" <dr.o@xxxxx> wrote in message
news:3fcca272$0$121$(E-Mail Removed)...
> Hi,
>
> I've installed an old version of Corel Linux / Debian on my PC and I
wanted
> to try the webserver Apache. When I start the webserver, however I get an
> error in the logfile, something like 'cannot resolve
> gethostbyname("catbert5")'. The webserver isn't running afterwards even
> after I do a 'Apache start' so the error must be critical.
>
> I believe it's a DNS error but I don't know how to solve the problem.

Someone else helped me solve it. My 'hosts' file looked like

127.0.0.1 localhost

I just added the line

127.0.0.1 catbert5

to it and now it works!

Dr. O <dr.o@xxxxx> wrote:
> "Dr. O" <dr.o@xxxxx> wrote in message
> news:3fcca272$0$121$(E-Mail Removed)...
> > I've installed an old version of Corel Linux / Debian on my PC and I wanted
> > to try the webserver Apache. When I start the webserver, however I get an
> > error in the logfile, something like 'cannot resolve
> > gethostbyname("catbert5")'. The webserver isn't running afterwards even
> > after I do a 'Apache start' so the error must be critical.
> >
> > I believe it's a DNS error but I don't know how to solve the problem.

Fix your domain name service resolution.

> Someone else helped me solve it. My 'hosts' file looked like

> 127.0.0.1 localhost

> I just added the line

> 127.0.0.1 catbert5

This is incorrect.

1) it should be "127.0.0.2", not "127.0.0.1"
2) it should be "catbert5.foo.org catbert5", not "catbert5"

> to it and now it works!

But only because it is less broken than before. Fix it properly. Why do
you think up such brokenesses in the first place? If you didn't invent
them, you wouldn't have to invent fixes for them either!

Peter

On Tue, 02 Dec 2003 18:30:21 GMT, P.T. Breuer <(E-Mail Removed)> wrote:
> Dr. O <dr.o@xxxxx> wrote:
>> "Dr. O" <dr.o@xxxxx> wrote in message
>> news:3fcca272$0$121$(E-Mail Removed)...
>> > I've installed an old version of Corel Linux / Debian on my PC and I wanted
>> > to try the webserver Apache. When I start the webserver, however I get an
>> > error in the logfile, something like 'cannot resolve
>> > gethostbyname("catbert5")'. The webserver isn't running afterwards even
>> > after I do a 'Apache start' so the error must be critical.
>> >
>> > I believe it's a DNS error but I don't know how to solve the problem.
>
> Fix your domain name service resolution.
>
>> Someone else helped me solve it. My 'hosts' file looked like
>
>> 127.0.0.1 localhost
>
>> I just added the line
>
>> 127.0.0.1 catbert5
>
> This is incorrect.
>
> 1) it should be "127.0.0.2", not "127.0.0.1"
> 2) it should be "catbert5.foo.org catbert5", not "catbert5"

or at least:

127.0.0.1 localhost
127.0.0.2 catbert5

Generally the 127.0.0.1 line should NOT be altered, or it may break other
daemons or programs, leaving the OP wondering why those do not work. If
the user does have a local domain the FQDN of the hostname would be listed
first followed by a whitespace (space, tab, etc.) separated list of
aliases (per 'man 5 resolver').

>> to it and now it works!
>
> But only because it is less broken than before. Fix it properly. Why do
> you think up such brokenesses in the first place? If you didn't invent
> them, you wouldn't have to invent fixes for them either!
>
> Peter


--
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"P.T. Breuer" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Dr. O <dr.o@xxxxx> wrote:
> > "Dr. O" <dr.o@xxxxx> wrote in message
> > news:3fcca272$0$121$(E-Mail Removed)...
> > > I've installed an old version of Corel Linux / Debian on my PC and I
wanted
> > > to try the webserver Apache. When I start the webserver, however I get
an
> > > error in the logfile, something like 'cannot resolve
> > > gethostbyname("catbert5")'. The webserver isn't running afterwards
even
> > > after I do a 'Apache start' so the error must be critical.
> > >
> > > I believe it's a DNS error but I don't know how to solve the problem.
>
> Fix your domain name service resolution.
>
> > Someone else helped me solve it. My 'hosts' file looked like
>
> > 127.0.0.1 localhost
>
> > I just added the line
>
> > 127.0.0.1 catbert5
>
> This is incorrect.
>
> 1) it should be "127.0.0.2", not "127.0.0.1"
> 2) it should be "catbert5.foo.org catbert5", not "catbert5"
>
> > to it and now it works!
>
> But only because it is less broken than before. Fix it properly. Why do
> you think up such brokenesses in the first place? If you didn't invent
> them, you wouldn't have to invent fixes for them either!
>

Because of brievity I didn't print the actual contents of the host file. The
actual content was:

127.0.0.1 localhost localdomain

127.0.0.1 catbert5 localdomain

I'll change the second line to 127.0.0.2.

Dr. O <dr.o@xxxxx> wrote:
> [ptb]
> > 1) it should be "127.0.0.2", not "127.0.0.1"
> > 2) it should be "catbert5.foo.org catbert5", not "catbert5"
> >
> Because of brievity I didn't print the actual contents of the host file. The
> actual content was:
>
> 127.0.0.1 localhost localdomain
> 127.0.0.1 catbert5 localdomain
>
> I'll change the second line to 127.0.0.2.

But it's broken still! How do you invent these brokenesses? Why do you
think "localdomain" should be an alias for "localhost"? And why for
"catbert5" too?

The correct lines are

127.0.0.1 localhost localhost.localdomain
127.0.0.2 catbert5 catbert5.localdomain

if I understand your intention correctly.

Peter

My problem with can not find local host was the firwall.
can you ping 127.0.0.1



P.T. Breuer wrote:
> Dr. O <dr.o@xxxxx> wrote:
>
>>[ptb]
>>
>>> 1) it should be "127.0.0.2", not "127.0.0.1"
>>> 2) it should be "catbert5.foo.org catbert5", not "catbert5"
>>>
>>
>>Because of brievity I didn't print the actual contents of the host file. The
>>actual content was:
>>
>>127.0.0.1 localhost localdomain
>>127.0.0.1 catbert5 localdomain
>>
>>I'll change the second line to 127.0.0.2.
>
>
> But it's broken still! How do you invent these brokenesses? Why do you
> think "localdomain" should be an alias for "localhost"? And why for
> "catbert5" too?
>
> The correct lines are
>
> 127.0.0.1 localhost localhost.localdomain
> 127.0.0.2 catbert5 catbert5.localdomain
>
> if I understand your intention correctly.
>
> Peter