Difference between revisions of "Network troubleshooting"
| (25 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
<div style="border: 1px solid #B66; padding: .5em 1em; color: #000; background-color: #FEE; margin: 3px 3px 1em 3px;"> | <div style="border: 1px solid #B66; padding: .5em 1em; color: #000; background-color: #FEE; margin: 3px 3px 1em 3px;"> | ||
| − | ''' | + | '''RULE #1: <u>DO NOT</u> turn off the DHCP server in your router until your HDA has full network connectivity''' |
</div> | </div> | ||
| − | Your HDA should be capable of browsing all the major sites and http://www.amahi.org before doing anything else. | + | Your HDA should be capable of browsing all the major sites and <nowiki>http://www.amahi.org</nowiki> before doing anything else. |
If you do not have connectivity, you may want to check that the settings that you programmed in amahi.org for your network and router match that of your actual network and the router in it. Amahi assumes a regular, typical home network and the settings there should be done to match what you have. The most common error is that the gateway is not set up properly. We have a page on how to [[Find Your Gateway IP]]. | If you do not have connectivity, you may want to check that the settings that you programmed in amahi.org for your network and router match that of your actual network and the router in it. Amahi assumes a regular, typical home network and the settings there should be done to match what you have. The most common error is that the gateway is not set up properly. We have a page on how to [[Find Your Gateway IP]]. | ||
| − | Please note that '''only the first NIC/ethernet card | + | Please note that '''only the first NIC/ethernet card''' is supported out of the box. If you have two, please make sure you disable the one not used in your network. |
| − | + | There is a final critical step to [[Transition to Amahi]] for your network. Your clients need to be using Amahi for DNS for it all to be working as expected. | |
| − | = Amahi 7 (Fedora 19) Prerequisite = | + | == Amahi 7/8/9/10/11 (Fedora 19/21/23/25/27) Prerequisite == |
| − | You will need to install the network tools package: | + | You will need to install the network tools package (or [https://www.amahi.org/apps/hda-troubleshooting-tools HDA Troubleshooting Tools] web application): |
yum install net-tools bind-utils | yum install net-tools bind-utils | ||
| − | = Identify the problem = | + | ::'''NOTE:''' <code>yum</code> (deprecated) has been replaced with <code>dnf</code> as the package manager for Fedora 23 and greater. |
| + | |||
| + | == Identify the problem == | ||
To help you identify a network problem you might have, try using the [http://www.amahi.net Interactive Amahi Network Troubleshooter]. | To help you identify a network problem you might have, try using the [http://www.amahi.net Interactive Amahi Network Troubleshooter]. | ||
If it fails along the way, it will give you instructions on how to get additional help, and how to provide us with the information we need to help you understand and fix the problem. | If it fails along the way, it will give you instructions on how to get additional help, and how to provide us with the information we need to help you understand and fix the problem. | ||
| − | = Additional Diagnosis = | + | == Additional Diagnosis == |
| − | |||
| − | |||
| − | |||
| − | + | If the [http://www.amahi.net Interactive Amahi Network Troubleshooter] can't help, you can try the steps below, and tell us (on IRC, or in the forums) what step you get stuck at. | |
| − | == Step 1 == | + | === Step 1 === |
From your hda itself (via ssh or at the desktop in a terminal), can you: | From your hda itself (via ssh or at the desktop in a terminal), can you: | ||
| Line 34: | Line 33: | ||
# ping hda <small>(it should ping the IP of your HDA; this ensures the dns server is working)</small> | # ping hda <small>(it should ping the IP of your HDA; this ensures the dns server is working)</small> | ||
# ping router <small> (it should ping the IP of the router; this ensures your HDA can see the router)</small> | # ping router <small> (it should ping the IP of the router; this ensures your HDA can see the router)</small> | ||
| − | # ping | + | # ping 8.8.8.8 <small>(this ensures you can see the rest of the world)</small> |
# ping yahoo.com <small> (this ensures your dns server can see the world)</small> | # ping yahoo.com <small> (this ensures your dns server can see the world)</small> | ||
| − | # Access http://hda in a browser (or use curl in a terminal) | + | # Access <nowiki>http://hda</nowiki> in a browser (or use curl in a terminal) |
| + | |||
If the above does not work, try and fix it by double checking the settings. | If the above does not work, try and fix it by double checking the settings. | ||
| Line 42: | Line 42: | ||
After the above works, you should be able to access | After the above works, you should be able to access | ||
| − | <code>http://hda</code> | + | <code><nowiki>http://hda</nowiki></code> |
from the HDA machine's desktop! | from the HDA machine's desktop! | ||
| − | If the above works, '''then and only then''' you may turn off the DHCP server in your router. '''IMPORTANT: after turning off the DHCP server in your router, you must [[RenewIP|renew your client's IP addresses]]. | + | If the above works, '''then and only then''' you may turn off the DHCP server in your router. |
| + | |||
| + | '''IMPORTANT:''' after turning off the DHCP server in your router, you must [[RenewIP|renew your client's IP addresses]]. | ||
| − | == Step 2 == | + | === Step 2 === |
If you want to use the full functionality of your HDA, you '''must make sure your client has a DHCP lease from your HDA''' from here on, so let's move to one or more of the clients (after their network has restarted: | If you want to use the full functionality of your HDA, you '''must make sure your client has a DHCP lease from your HDA''' from here on, so let's move to one or more of the clients (after their network has restarted: | ||
| Line 63: | Line 65: | ||
* At what point, relative to the above, did you restart (or ''release and'' renew the DHCP lease on the) clients | * At what point, relative to the above, did you restart (or ''release and'' renew the DHCP lease on the) clients | ||
| − | = Non Default Network Set-ups = | + | == Non Default Network Set-ups == |
If your router does not have an IP of 192.168.1.1, the following command will make the process easy to allow your HDA to work: | If your router does not have an IP of 192.168.1.1, the following command will make the process easy to allow your HDA to work: | ||
| Line 77: | Line 79: | ||
<b>NOTE:</b> You will need to restart your server after applying the change. | <b>NOTE:</b> You will need to restart your server after applying the change. | ||
| − | = When all else fails = | + | == Can't Disable Router DHCP == |
| + | It's unusual, but not unheard of, to not be able to disable DHCP on the router. Most notable is the case of using an Airport Express for DHCP service. | ||
| + | |||
| + | Refer to the Apple [[Airport express|Airport Express]] guidance for a work around. | ||
| + | |||
| + | This same technique may work with other router brands. | ||
| + | |||
| + | == When all else fails == | ||
In some cases, it could be the client OS causing issues. | In some cases, it could be the client OS causing issues. | ||
| Line 83: | Line 92: | ||
One known issue is the [[Vista_Networking_Issue|Windows Networking Issue]] | One known issue is the [[Vista_Networking_Issue|Windows Networking Issue]] | ||
| − | + | ||
| + | Back to the [[Troubleshooting]]. | ||
Latest revision as of 01:21, 4 October 2018
RULE #1: DO NOT turn off the DHCP server in your router until your HDA has full network connectivity
Your HDA should be capable of browsing all the major sites and http://www.amahi.org before doing anything else.
If you do not have connectivity, you may want to check that the settings that you programmed in amahi.org for your network and router match that of your actual network and the router in it. Amahi assumes a regular, typical home network and the settings there should be done to match what you have. The most common error is that the gateway is not set up properly. We have a page on how to Find Your Gateway IP.
Please note that only the first NIC/ethernet card is supported out of the box. If you have two, please make sure you disable the one not used in your network.
There is a final critical step to Transition to Amahi for your network. Your clients need to be using Amahi for DNS for it all to be working as expected.
Contents
Amahi 7/8/9/10/11 (Fedora 19/21/23/25/27) Prerequisite
You will need to install the network tools package (or HDA Troubleshooting Tools web application):
yum install net-tools bind-utils
- NOTE:
yum(deprecated) has been replaced withdnfas the package manager for Fedora 23 and greater.
- NOTE:
Identify the problem
To help you identify a network problem you might have, try using the Interactive Amahi Network Troubleshooter. If it fails along the way, it will give you instructions on how to get additional help, and how to provide us with the information we need to help you understand and fix the problem.
Additional Diagnosis
If the Interactive Amahi Network Troubleshooter can't help, you can try the steps below, and tell us (on IRC, or in the forums) what step you get stuck at.
Step 1
From your hda itself (via ssh or at the desktop in a terminal), can you:
- ping hda (it should ping the IP of your HDA; this ensures the dns server is working)
- ping router (it should ping the IP of the router; this ensures your HDA can see the router)
- ping 8.8.8.8 (this ensures you can see the rest of the world)
- ping yahoo.com (this ensures your dns server can see the world)
- Access http://hda in a browser (or use curl in a terminal)
If the above does not work, try and fix it by double checking the settings.
After the above works, you should be able to access
http://hda
from the HDA machine's desktop!
If the above works, then and only then you may turn off the DHCP server in your router.
IMPORTANT: after turning off the DHCP server in your router, you must renew your client's IP addresses.
Step 2
If you want to use the full functionality of your HDA, you must make sure your client has a DHCP lease from your HDA from here on, so let's move to one or more of the clients (after their network has restarted:
- ping hda (this ensures the client can see the DNS server in your HDA)
- ping router (this ensures the client can see your network gateway)
- ping yahoo.com (this ensures the client can see the world)
If you want to stop by the IRC channel for help, it would speed things up to report where you are "stuck" in that list, like step 1.3, or 2.2. You should also say:
- What client operating system are your other machines in the network using
- At what point did you turn off your router DHCP (if you did)
- At what point, relative to the above, did you restart (or release and renew the DHCP lease on the) clients
Non Default Network Set-ups
If your router does not have an IP of 192.168.1.1, the following command will make the process easy to allow your HDA to work:
su - hda-change-gw [gateway IP]
Example if your default gateway (router) has an IP of 192.168.0.1:
hda-change-gw 192.168.0.1
NOTE: You will need to restart your server after applying the change.
Can't Disable Router DHCP
It's unusual, but not unheard of, to not be able to disable DHCP on the router. Most notable is the case of using an Airport Express for DHCP service.
Refer to the Apple Airport Express guidance for a work around.
This same technique may work with other router brands.
When all else fails
In some cases, it could be the client OS causing issues.
One known issue is the Windows Networking Issue
Back to the Troubleshooting.
