Debian 8 - Lan connection works but no internet [Unknown host]
Clash Royale CLAN TAG#URR8PPP
I have a Debian 8 server that has been running great for about a year. All of a sudden I am no longer getting internet access.
The server is connected over an ethernet cable and I can SSH into over the local network.
When I do ping www.google.com then I get Unknown Host. If I do ping 8.8.8.8 then it works.
So I would guess that it is a DNS issue? My /etc/network/interfaces file looks like this..
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
Where else should I be lookgin to resolve this?
linux debian dns
edited Feb 9 at 23:08
AnFi
1,11959
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
add a comment |
I have a Debian 8 server that has been running great for about a year. All of a sudden I am no longer getting internet access.
The server is connected over an ethernet cable and I can SSH into over the local network.
When I do ping www.google.com then I get Unknown Host. If I do ping 8.8.8.8 then it works.
So I would guess that it is a DNS issue? My /etc/network/interfaces file looks like this..
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
Where else should I be lookgin to resolve this?
linux debian dns
edited Feb 9 at 23:08
AnFi
1,11959
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
1
What does it show in/etc/resolv.conf?
– Jesse_b
Feb 9 at 20:26
1
/etc/resolv.conf is blank
– fightstarr20
Feb 9 at 20:30
Weird that it would become blank. Do you have any configuration management software in your environment, and are you hosting your own DNS servers?
– Jesse_b
Feb 9 at 20:39
add a comment |
I have a Debian 8 server that has been running great for about a year. All of a sudden I am no longer getting internet access.
The server is connected over an ethernet cable and I can SSH into over the local network.
When I do ping www.google.com then I get Unknown Host. If I do ping 8.8.8.8 then it works.
So I would guess that it is a DNS issue? My /etc/network/interfaces file looks like this..
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
Where else should I be lookgin to resolve this?
linux debian dns
edited Feb 9 at 23:08
AnFi
1,11959
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
I have a Debian 8 server that has been running great for about a year. All of a sudden I am no longer getting internet access.
The server is connected over an ethernet cable and I can SSH into over the local network.
When I do ping www.google.com then I get Unknown Host. If I do ping 8.8.8.8 then it works.
So I would guess that it is a DNS issue? My /etc/network/interfaces file looks like this..
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
Where else should I be lookgin to resolve this?
linux debian dns
linux debian dns
edited Feb 9 at 23:08
AnFi
1,11959
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
edited Feb 9 at 23:08
AnFi
1,11959
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
edited Feb 9 at 23:08
AnFi
1,11959
edited Feb 9 at 23:08
AnFi
1,11959
edited Feb 9 at 23:08
AnFi
1,11959
1,11959
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
asked Feb 9 at 20:24
fightstarr20fightstarr20
13016
13016
1
What does it show in/etc/resolv.conf?
– Jesse_b
Feb 9 at 20:26
1
/etc/resolv.conf is blank
– fightstarr20
Feb 9 at 20:30
Weird that it would become blank. Do you have any configuration management software in your environment, and are you hosting your own DNS servers?
– Jesse_b
Feb 9 at 20:39
add a comment |
1
What does it show in/etc/resolv.conf?
– Jesse_b
Feb 9 at 20:26
1
/etc/resolv.conf is blank
– fightstarr20
Feb 9 at 20:30
Weird that it would become blank. Do you have any configuration management software in your environment, and are you hosting your own DNS servers?
– Jesse_b
Feb 9 at 20:39
1
1
What does it show in
/etc/resolv.conf ?– Jesse_b
Feb 9 at 20:26
What does it show in
/etc/resolv.conf ?– Jesse_b
Feb 9 at 20:26
1
1
/etc/resolv.conf is blank
– fightstarr20
Feb 9 at 20:30
/etc/resolv.conf is blank
– fightstarr20
Feb 9 at 20:30
Weird that it would become blank. Do you have any configuration management software in your environment, and are you hosting your own DNS servers?
– Jesse_b
Feb 9 at 20:39
Weird that it would become blank. Do you have any configuration management software in your environment, and are you hosting your own DNS servers?
– Jesse_b
Feb 9 at 20:39
add a comment |
1 Answer
1
active
oldest
votes
I would try updating your /etc/resolv.conf file with the following:
nameserver 8.8.8.8
nameserver 8.8.4.4
search local
8.8.8.8 and 8.8.4.4 are Google's public DNS servers as you seem to already be aware of.
nameserver Name server IP address
Internet address of a name server that the resolver should
query, either an IPv4 address (in dot notation), or an IPv6
address in colon (and possibly dot) notation as per RFC 2373.
Up to MAXNS (currently 3, see ) name servers may be
listed, one per keyword. If there are multiple servers, the
resolver library queries them in the order listed. If no
nameserver entries are present, the default is to use the name
server on the local machine. (The algorithm used is to try a
name server, and if the query times out, try the next, until
out of name servers, then repeat trying all the name servers
until a maximum number of retries are made.)
search Search list for host-name lookup.
The search list is normally determined from the local domain
name; by default, it contains only the local domain name.
This may be changed by listing the desired domain search path
following the search keyword with spaces or tabs separating
the names. Resolver queries having fewer than ndots dots
(default is 1) in them will be attempted using each component
of the search path in turn until a match is found. For
environments with multiple subdomains please read options
ndots:n below to avoid man-in-the-middle attacks and
unnecessary traffic for the root-dns-servers. Note that this
process may be slow and will generate a lot of network traffic
if the servers for the listed domains are not local, and that
queries will time out if no server is available for one of the
domains.
The search list is currently limited to six domains with a
total of 256 characters.
resolv.conf(5)
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
1
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
add a comment |
Your Answer
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f499684%2fdebian-8-lan-connection-works-but-no-internet-unknown-host%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I would try updating your /etc/resolv.conf file with the following:
nameserver 8.8.8.8
nameserver 8.8.4.4
search local
8.8.8.8 and 8.8.4.4 are Google's public DNS servers as you seem to already be aware of.
nameserver Name server IP address
Internet address of a name server that the resolver should
query, either an IPv4 address (in dot notation), or an IPv6
address in colon (and possibly dot) notation as per RFC 2373.
Up to MAXNS (currently 3, see ) name servers may be
listed, one per keyword. If there are multiple servers, the
resolver library queries them in the order listed. If no
nameserver entries are present, the default is to use the name
server on the local machine. (The algorithm used is to try a
name server, and if the query times out, try the next, until
out of name servers, then repeat trying all the name servers
until a maximum number of retries are made.)
search Search list for host-name lookup.
The search list is normally determined from the local domain
name; by default, it contains only the local domain name.
This may be changed by listing the desired domain search path
following the search keyword with spaces or tabs separating
the names. Resolver queries having fewer than ndots dots
(default is 1) in them will be attempted using each component
of the search path in turn until a match is found. For
environments with multiple subdomains please read options
ndots:n below to avoid man-in-the-middle attacks and
unnecessary traffic for the root-dns-servers. Note that this
process may be slow and will generate a lot of network traffic
if the servers for the listed domains are not local, and that
queries will time out if no server is available for one of the
domains.
The search list is currently limited to six domains with a
total of 256 characters.
resolv.conf(5)
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
1
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
add a comment |
I would try updating your /etc/resolv.conf file with the following:
nameserver 8.8.8.8
nameserver 8.8.4.4
search local
8.8.8.8 and 8.8.4.4 are Google's public DNS servers as you seem to already be aware of.
nameserver Name server IP address
Internet address of a name server that the resolver should
query, either an IPv4 address (in dot notation), or an IPv6
address in colon (and possibly dot) notation as per RFC 2373.
Up to MAXNS (currently 3, see ) name servers may be
listed, one per keyword. If there are multiple servers, the
resolver library queries them in the order listed. If no
nameserver entries are present, the default is to use the name
server on the local machine. (The algorithm used is to try a
name server, and if the query times out, try the next, until
out of name servers, then repeat trying all the name servers
until a maximum number of retries are made.)
search Search list for host-name lookup.
The search list is normally determined from the local domain
name; by default, it contains only the local domain name.
This may be changed by listing the desired domain search path
following the search keyword with spaces or tabs separating
the names. Resolver queries having fewer than ndots dots
(default is 1) in them will be attempted using each component
of the search path in turn until a match is found. For
environments with multiple subdomains please read options
ndots:n below to avoid man-in-the-middle attacks and
unnecessary traffic for the root-dns-servers. Note that this
process may be slow and will generate a lot of network traffic
if the servers for the listed domains are not local, and that
queries will time out if no server is available for one of the
domains.
The search list is currently limited to six domains with a
total of 256 characters.
resolv.conf(5)
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
1
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
add a comment |
I would try updating your /etc/resolv.conf file with the following:
nameserver 8.8.8.8
nameserver 8.8.4.4
search local
8.8.8.8 and 8.8.4.4 are Google's public DNS servers as you seem to already be aware of.
nameserver Name server IP address
Internet address of a name server that the resolver should
query, either an IPv4 address (in dot notation), or an IPv6
address in colon (and possibly dot) notation as per RFC 2373.
Up to MAXNS (currently 3, see ) name servers may be
listed, one per keyword. If there are multiple servers, the
resolver library queries them in the order listed. If no
nameserver entries are present, the default is to use the name
server on the local machine. (The algorithm used is to try a
name server, and if the query times out, try the next, until
out of name servers, then repeat trying all the name servers
until a maximum number of retries are made.)
search Search list for host-name lookup.
The search list is normally determined from the local domain
name; by default, it contains only the local domain name.
This may be changed by listing the desired domain search path
following the search keyword with spaces or tabs separating
the names. Resolver queries having fewer than ndots dots
(default is 1) in them will be attempted using each component
of the search path in turn until a match is found. For
environments with multiple subdomains please read options
ndots:n below to avoid man-in-the-middle attacks and
unnecessary traffic for the root-dns-servers. Note that this
process may be slow and will generate a lot of network traffic
if the servers for the listed domains are not local, and that
queries will time out if no server is available for one of the
domains.
The search list is currently limited to six domains with a
total of 256 characters.
resolv.conf(5)
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
I would try updating your /etc/resolv.conf file with the following:
nameserver 8.8.8.8
nameserver 8.8.4.4
search local
8.8.8.8 and 8.8.4.4 are Google's public DNS servers as you seem to already be aware of.
nameserver Name server IP address
Internet address of a name server that the resolver should
query, either an IPv4 address (in dot notation), or an IPv6
address in colon (and possibly dot) notation as per RFC 2373.
Up to MAXNS (currently 3, see ) name servers may be
listed, one per keyword. If there are multiple servers, the
resolver library queries them in the order listed. If no
nameserver entries are present, the default is to use the name
server on the local machine. (The algorithm used is to try a
name server, and if the query times out, try the next, until
out of name servers, then repeat trying all the name servers
until a maximum number of retries are made.)
search Search list for host-name lookup.
The search list is normally determined from the local domain
name; by default, it contains only the local domain name.
This may be changed by listing the desired domain search path
following the search keyword with spaces or tabs separating
the names. Resolver queries having fewer than ndots dots
(default is 1) in them will be attempted using each component
of the search path in turn until a match is found. For
environments with multiple subdomains please read options
ndots:n below to avoid man-in-the-middle attacks and
unnecessary traffic for the root-dns-servers. Note that this
process may be slow and will generate a lot of network traffic
if the servers for the listed domains are not local, and that
queries will time out if no server is available for one of the
domains.
The search list is currently limited to six domains with a
total of 256 characters.
resolv.conf(5)
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
answered Feb 9 at 20:31
Jesse_bJesse_b
13.2k23369
13.2k23369
1
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
add a comment |
1
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
1
1
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
Thank you that did it. This server has reached EOL so it only has to survive for another 3 weeks. This will do until then :) Thanks for your solution, much appreciated
– fightstarr20
Feb 9 at 20:46
add a comment |
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f499684%2fdebian-8-lan-connection-works-but-no-internet-unknown-host%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
What does it show in
/etc/resolv.conf?– Jesse_b
Feb 9 at 20:26
1
/etc/resolv.conf is blank
– fightstarr20
Feb 9 at 20:30
Weird that it would become blank. Do you have any configuration management software in your environment, and are you hosting your own DNS servers?
– Jesse_b
Feb 9 at 20:39