I moved my WHM/cPanel installation to a new server. After changing the nameserver IP's and then after a little while the domains to started pointing to the new server.
However the hostname doesn't resolve to an IP address.
/scripts/ipcheck --verbose
IMPORTANT: Do not ignore this email.
Your hostname (xxx.example.com) could not be resolved to an
IP address. This means that /etc/hosts is not set up correctly,
and/or there is no dns entry for xxx.example.com. Please be
sure that the contents of /etc/hosts are configured correctly, and
also that there is a correct 'A' entry for the domain in the zone
file.
Some or all of these problems can be caused by /etc/resolv.conf
being setup incorrectly. Please check that file if you believe
everything else is correct.
You may be able to automatically correct this problem by using the
'Add an A entry for your hostname' option under 'Dns Functions' in
your Web Host Manager.
I ran:
nano /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
XXX.XXX.XXX.XXX xxx.example.com xxx
I also check:
nano /etc/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.4.4
Also:
nano /etc/nameserverips
XXX.XXX.XXX.XXX=ns1.example.com
XXX.XXX.XXX.XXX=ns2.example.com
I checked the "Add an A Entry for your hostname" in WHM:
Hostname | Server Main IP
xxx.example.com | XXX.XXX.XXX.XXX
I checked and rebuilt dnsconfig
/scripts/rebuildingdnsconfig
I am really not sure what else to check, i have rebooted the server. The domains pointing to the name servers work fine. THe problem i am having is i route all cpanel access and SSL configs for the emails through https://xxx.example.com because this has the SSL cert. I have compared the settings to the older server and they are the same except the IP address.
Centos 6.4
WHM 11.40.0 Build 19
XXX.XXX.XXX = Server IPs
xxx.example.com = hostname
Any help would be appreciated.
Solved this:
Go to WHM, "add an entry for your hostname" and just submit again.
Even though it was correct submitting it again worked. This fix came from cPanel support.
I know its an old post, but here are a few checkpoints in addition to above if someone might need help in future with similar issue:
1> Check the content of
/etc/wwwacct.conf
2> Investigate your hostname & NS for proper results
dig ns1.example.com
dig hostname.exmple.com
host ns1.example.com
host (HOST IP)
nslookup hostname.exmple.com
3) Make sure you have registered your hostname.example.com and ns1.example.com at your domain registrar and they are pointing to right IP.
4) Ensure that no firewall is blocking port UDP:53 and others essential ports.
Related
I have a new Linux database server I am working on with a certain hostname and ipaddress. I want to change it's hostname and ipaddress with my old Linux database server's at the time of going live with the new server. I understand this requires only update on the new server's hosts file.
My team says it would need a DNS update. I don't see why it would require a DNS update. Because a DNS is a mapping between hostname and ipaddress and it hasn't changed.
Could anyone clarify?
Thank You, Madhuri Dara
normally, yes indeed, a DNS is a mapping between IP addresses and hostname.
However, I would also recommend to delete the old one an re-create them to perform a re-discovery of the routes.
The best option for you would be here to have a DNS manager into your domain, this way, you could modify them here, instead of into your DNS file in each machine.
I got the message when I use live server at VS code.
This page isn’t working 127.0.0.1
I checked use local up option. but it still doesn't working.
I tried changing live server : host ip address to my ip address. But it still doesn't working.
what can I do?
*use local ip as host option picture:
https://i.stack.imgur.com/COq2I.png
In your given image, you have checked the option that hosts the liveserver on your IP, so you should have a look at yourip:port.
For example, if you is 10.43.156.141, and post is 5500 then
the server will be on http://10.43.156.141:5500
EDIT
To get your IP
If you are using Windows, use:
C:\User>ipconfig
If you have Linux, use:
$ ifconfig
Or just visit https://api.ipify.org/ to get your IP.
Note: When you visit https://api.ipify.org/ disable your VPN or Brave Shield or any Privacy Booster if you have
Edit:
The port is shown here
Edit the port in the live server
If you dont know the port, just add the below code in vscode's settings.json
"liveServer.settings.port": 5500
Change the 5500 to the port you want. Mostly 5500 is used.
Try using IPv4 Address.
Fo example if your IPv4 Address is 172.31.96.1 and your file name is index.html, Then change the URL in the browser from http://127.0.0.1:5500/index.html to http://172.31.96.1:5500/index.html
If you deleted a VM on Google Compute Engine on a Centos 6 Cpanel server and then create it with the same disk, you often are assigned a new local IP address even if you kept the static IP. This does not properly update in the NAT configuration on Cpanel/WHM servers.
This stops any sites from working and the only way to fix it is manually edit the http.conf file. Inside Web Host Manager you can fix the public facing IP, but there is no place to edit the local IP. Does anyone know how to edit the nat configuration on centos 6 on Google Compute Engine to fix the local IP so that all new sites created will have the correct local IP in the http.conf?
Here is a pic of the current nat configuration on my Centos 6 server.
Here is a pic showing my correct local IP in Compute Engine, you can see it does not match the one Cpanel has, which causes the http.conf file to generate new virtual hosts with the wrong IP.
Its a configuration issue within WHM/Cpanel that can not be corrected with any configuration settings in the interfaces. I contacted Cpanel Support and they provided me with a command line shell script to run from root to fix the issue. It worked flawlessly:
# /scripts/build_cpnat
This resolved the issue, but they gave this additional info if that does not solve your problem:
If this does not resolve your issue, please review our NAT
documentation and ensure that your server is configured in a supported
1:1 NAT configuration:
http://documentation.cpanel.net/display/ALD/1%3A1+NAT
The Compute Engine does not allow you to create an instance with a specific network IP address. You will have to use a combination of routes and an instance's --can-ip-forward ability to add an IP address as a static network IP address that then maps to your desired virtual machine instance.
For example, if you want to assign 10.1.1.1 specifically as a network IP address to a virtual machine instance, you can create a static route that sends traffic from 10.1.1.1 to your instance, even if the instance's network IP address assigned by Compute Engine doesn't match your desired network IP address.
Take a look at this link: https://cloud.google.com/compute/docs/instances-and-network#staticnetworkaddress
The best and the simplest solution for this is to use the WHM/Cpanel IP Migration Wizard option to change the existing Private IP with the new one and then wait for few hours to make those changes propagate and you will see the new Private IP and Public IP in sync in your WHM platform.
I had the same issue with AWS and CentOS 7 hosting latest WHM/ cPanel. each time the instance restarts then a new private/ local IP address. I deleted cpnat from /var/cpanel/.
So I disabled the NAT, then I created another eth so I can configure it with static IP which is the Public IP, then for the main account only which own the hostname and domain name for WHM I assigned it to the local IP address, but as the local IP address keep changing so I created a script fires up at the start after each boot collecting the new local IP address and assign it automatically to the main account and if there is no new local IP address then the script exit without doing anything.
here are the steps been done:
nano /etc/sysconfig/network-scripts/ifcfg-eth0:cp1
and inside that file put the following: (change IPADDR & DNS)
DEVICE="eth0:cp1"
BOOTPROTO="static"
ONBOOT="yes"
IPADDR="13.54.100.XX"
NETMASK="255.255.255.0"
DNS1="172.31.0.2"
TYPE="Ethernet"
IPV6INIT="no"
now we would like this interface to stay upon reboot and start on the reboot so run:
ifup eth0:cp1
then restart the network service by:
service network restart
now disable NAT mode by deleting the file cpnat in /var/cpanel
now check the file /var/cpanel/mainip and make sure our external ip is there 13.54.100.XX
create the following file with nano:
nano /etc/init.d/fixdhcp
add the following to the file and save it:
#!/bin/bash
# # This script assigns available DHCP IP to ACCOUNT-NAME user on Reboot or Restart, please change ACCOUNT-NAME to the main WHM domain account name
# apache service will restart when done.
/scripts/rebuildippool
export mydhcp10=$(cat /etc/ipaddrpool)
echo $mydhcp10
# Exit if no available IPs
if [ "${mydhcp10}" == "" ]; then
echo "ipaddrpool is empty" && exit 1
else
echo "ipaddrpool is not empty"
fi
/usr/local/cpanel/bin/setsiteip -u ACCOUNT-NAME $mydhcp10
chmod +x /etc/rc.d/rc.local
echo finished now restarting services
/scripts/rebuildhttpdconf
/scripts/rebuildippool
/scripts/cleandns
/scripts/fixvaliases
/scripts/modify_accounts --theme=paper_lantern --all-users
/usr/local/cpanel/scripts/updateuserdomains
service httpd restart
make the file excutable:
chmod +x /etc/init.d/fixdhcp
add it to rc.d
nano /etc/rc.local
then add it like this:
/etc/init.d/fixdhcp
save then run:
chmod +x /etc/rc.d/rc.local
If it still won't change, try this:
(i.e. when you List Accounts you see the old internal IP listed for each account)
WHM -> List Accounts expand desired account (+)
=> Change IP Address
=> select the IP address (even if it is the same external IP)
=> click change.
repeat for each affected account.
output:
The remote dns zone is not consistent with the httpd.conf.
The current ip in httpd.conf is: 10.240.0.3.
The current ip in the dns zone is: 104.154.68.68!
104.154.68.68 will be switched to the new ip as well!
The local dns zone is not consistent with the httpd.conf.
The current ip in httpd.conf is: 10.240.0.3.
The current ip in the dns zone is: 10.240.0.2!
10.240.0.2 will be switched to the new ip as well!
Warning, serious database inconsistency. httpd.conf, local dns, and remote dns all
have different ideas about what the ip address of this site really is. They will now all be changed
to the new ip: 10.240.0.2!
Changed all instances of [10.240.0.3,104.154.68.68] -> [104.154.68.68] in dcmetroc.kellen.hosting
Changed all instances of [10.240.0.3,104.154.68.68] -> [104.154.68.68] in dcmetrocollaborative.org
Updating httpd.conf....Done
System has 0 free ips.
if you're using nginx, don't forget to rebuild vhosts in ngnix plugin!
I just needed to change the local IP with the new one in:
/var/cpanel/cpnat
/etc/hosts
/etc/ips.dnsmaster
For my development process I need to access a webserver which is behind a VPN and has no DNS entry.
What I was doing on 4.x was to edit /etc/hosts on the iPhone, and add it to the hosts file.
Now I'm on 5.0 beta, and don't want to jailbreak for now just for this purpose.
Is there a way I can add a line to /etc/hosts, just for development purposes (the final, distribution application does not need this hack), without jailbreaking? Can I use other means (declare a fake DNS entry by some unknown means at application launch, for example)?
EDIT: If you're willing to purchase a small license, I recommend using Charles Proxy, a web debugging proxy tool. It will also resolve domains from your local /etc/hosts, and it gives a lot of bonus features (i.e. inspect requests/responses and throttle network speeds). I only stumbled upon this tool from a WWDC video and I'm not affiliated with the product at all. I recommend reading Chris Ching's tutorial for iPhone and Charles Proxy to get you started.
To add to Ramon's answer, a way around it is to setup your local computer as a DNS server and have your iPhone point to your computer as a DNS server. This would also work for Android devices as well
The instructions are for Mac OSX via Homebrew:
brew install dnsmasq
dnsmasq is a lightweight dns server that will fallback to the original DNS server when it encounters an unknown domain
Add the line address=/.your.domain.com/10.0.0.5 to the file /usr/local/etc/dnsmasq.conf
The IP Address 10.0.0.5 is whatever the IP address assigned to your local computer by your router. You can find this via Network Utility (if you want to be fancy, you can assign a static IP to your local computer in your router)
sudo dnsmasq
This starts dnsmasq process, and it will listen on the DNS ports
Assign your local computer and your router as your DNS servers for your computer via System Preferences -> Network -> Advanced -> DNS Tab
You'll have two entries, one for your local computer (127.0.0.1) and one for your router. The reason why you include your router's IP is dnsmasq will fulfill unknown entries through the other known DNS servers. Without the router entry, you're whatever devices connected to you dnsmasq won't know how to connect to the internet.
Set your local computer's IP Address as your DNS Server your iPhone, go to Settings -> Wi-Fi -> Info icon for your connected router -> DNS
Some things to consider:
If you shut down your machine, your iPhone won't connect to the internet anymore. Make sure to reset your iPhone's DNS server to your router's IP
By default dnsmasq will look at your /etc/hosts, so if you had pointed your.domain.com to 127.0.0.1, your iPhone will resolve your.domain.com to 127.0.0.1, which means you won't connect to anything. To change this behaviour edit uncomment the #no-hosts line in the dnsmasq config.
Sources
http://www.davesouth.org/stories/how-to-set-up-dnsmasq-on-snow-leopard-for-local-wildcard-domains
Set up a real DNS entry, either by setting up a local DNS server on your wireless network, or by using a dynamic DNS service, or by adding an A record to a domain you control DNS for.
You can also set up dnsmasq (available from macports/brew), it acts as a DNS forwarder which allows you to set all kinds of alternative records.
You can then set up the DNS on the iphone/ipad to point to the box running DNSmasq, and any host on /etc/hosts on the dnsmasq box will be returned first. If not found, dnsmasq will send the query to the upstream DNS.
Also you can add SRV records to dnsmasq.conf:
srv-host=_sip._udp.devel.foo.com,devel.foo.com,5070
And many other niceties.
Check this error and please help me.
2009-07-24 15:58:34.209 LBS[2636] Host 'staging.common.virtualearth.net' not found using 'gethostbyname()' - perhaps the hostname is wrong or networking is not set up on your machine
2009-07-24 15:58:34.209 LBS[2636] Attempt to lookup host entry for bad IP address (staging.common.virtualearth.net)
NOTE: you should run 'diskperf -y' to enable the disk statistics
I am running the objC codes for hitting a webservice on GNU for Windows.
Why is this error?
The first line says it can't find the IP address off the DNS servers.
The second is some kind of fallback with an incredibly cryptic error. Looks like it's trying reverse DNS using hostname as the IP address (hence bad IP address) or ARP resolution using hostname as IP address.
Basically fix the DNS to that host and both will be solved.