Entries in /etc/hosts are being ingored.

I added
209.132.176.175 bugzilla.gnome.org
to /etc/hosts and restarted Xserver, network service and my pppoe connection.
And the entry in /etc/hosts is is being ignored. Any idea how to debug this weird behavior?

Ah, now I see what your problem is :-)
What if you ping bugzilla.gnome.org? Does that reach 209.132.176.175?
-edit-
It seems that Firefox simply doesn't use /etc/hosts at all. Solution (if don't want to wait for your DNS servers to get updated): install dnsmasq, cp /etc/resolv.conf /etc/resolv.conf.2, change nameserver in resolv.conf to 127.0.0.1, change resolv-file to resolv.conf.2 and add bugzilla.gnome.org to address field in dnsmasq.conf and start /etc/rc.d/dnsmasq. You'd have to make sure ppooe doesn't overwrite resolv.conf (it'd have to write to resolv.conf.2). Additional benefit: local caching of DNS queries (=> faster browsing).
Last edited by lucke (2007-10-21 23:23:42)

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Mac osx 10.7.5 /etc/hosts file being ignored

Hi guys, i am a web developer and use my macbook pro for work, recently i upgraded my OSX to 10.7.5 and all **** broke loose. i use ubuntu server to on virtual box to host my webserver and now it seems like my hosts file is not being read because i cant ssh into my server anymore.
i googled around and discovered this was actually intentional by apple( i wonder why?) and have tried several solutions. one of them actually worked last week, where i had to go systempreference/network/advanced and added 127.0.0.1 to the top of the list, copied /etc/resolv.conf to /etc/resolve.dnsmasq.conf and loaded dnsmasq.
this worked for the last couple of days. today i restarted my macbookpro and im back to the same problem only this time a lot worse cause the past solution does not seem to wrk anymore and all solutions i have found on google dont seem to help anymore
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thanks...

Take each of the following steps that you haven't already tried, until the problem is resolved.
Step 1
Restart the router. Many problems are solved that way.
Step 2
Change the name of the wireless network, if applicable, to eliminate any characters other than letters and digits. You do that on your router via its web page, if it's not an Apple device, or via AirPort Utility, if it is an Apple device.
Step 3
Run the Network Diagnostics assistant.
Step 4
Back up all data.
Launch the Keychain Access application in any of the following ways:
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Step 5
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SCAN LISTENER runs from only one node at a time from /etc/hosts !

Dear all ,
Recently I have to configure RAC in oracle 11g(r2) in AIX 6.1 . Since in this moment it is not possible to configure DNS, so I dont use SCAN ip into the DNS/GNS, I just add the SCAN ip into the host file like :
cat /etc/hosts
SCAN 172.17.0.22
Got the info from : http://www.freeoraclehelp.com/2011/12/scan-setup-for-oracle-11g-release211gr2.html#ORACLE11GR2RACINS
After configuring all the steps of RAC , Every services are ok except SCAN_LISTENER . This listener is up only one node at a time . First time when I chek it from node1 , it shows :
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr1
now when I relocate it from node 2 using
"srvctl relocate scan -i 1-n DCDBSVR2" , then the output shows :
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr2
Baring these , we have to try to relocate it from the node2 by the following way, then it shows the error :
srvctl relocate scan -i 2 -n DCDBSVR2
resource ora.scan2.vip does not exists
Now my question , How can I run the SCAN and SCAN_LISTENER both of the NODES ?
Here is my listener file (which is in the GRID home location) configuration :
Listener File OF NODE1 AND NODE 2:
==================================
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON
LISTENER_SCAN1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC) (KEY = LISTENER_SCAN1)
ADR_BASE_LISTENER_SCAN1 = /U01/APP/ORACLE
2)
Another issue , when I give the command : " ifconfig -a " , then it shows the SCAN ip either node1 or node2 . suppose if the SCAN ip is in the node1 , and then if I run the "relocate" command from node2 , the ip goes to the Node 2 . is it a correct situation ? advice plz ... ...
thx in advance .. ...
Edited by: shipon_97 on Jan 10, 2012 7:22 AM
Edited by: shipon_97 on Jan 10, 2012 7:31 AM

After configuring all the steps of RAC , Every services are ok except SCAN_LISTENER . This listener is up only one node at a time . First time when I chek it from node1 , it shows :If I am not wrong and after looking at the document you sent, you will be able to use only once scan in case you use /etc/host file and this will be up on only one node where you added this scan entry in /etc/hosts file.
Now my question , How can I run the SCAN and SCAN_LISTENER both of the NODES ?Probably you can't in your case, you might run only one i think and on one node only
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr1
now when I relocate it from node 2 using
"srvctl relocate scan -i 1 -n DCDBSVR2" , then the output shows :
srvctl status scan_listener
SCAN listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node dcdbsvr2You moved scan listener from node 1 to node 2, OK
Baring these , we have to try to relocate it from the node2 by the following way, then it shows the error :
srvctl relocate scan -i 2 -n DCDBSVR2
resource ora.scan2.vip does not exists
--------------------------------------------------------------------------------Since you have only one scan, you can't relocate "2". So ise "1" instead here also
FYI
http://www.oracle.com/technetwork/database/clustering/overview/scan-129069.pdf
Salman

/etc/hosts is ignored

I configured my computer to use tor and dnsmasq to resolve dns queries exactly how the arch wiki said to. This seems to work fine, however, when I try to add a entry into /etc/hosts it is ignored. To fix this I tried commenting out no-resolv but it did no good. Why is it ignoring my /etc/hosts file?
Here is my /etc/hosts file:
# /etc/hosts: static lookup table for host names
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost
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Last edited by SteveDeFacto (2013-12-21 21:20:47)

WonderWoofy wrote:If you are using dnsmasq, why not just put it in your dnsmasq.conf? The formatting will obviously be different, but if that is what is resolving the dns, it would make more sense to put it there.
Actually, the main reason I was trying to modify /etc/hosts is because I am wanting to build a decentralized peer-to-peer service. I need to redirect the user to localhost upon entering a url with ".mydomain" The only way I can think to do this is to add an entry into /etc/hosts.
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/etc/hosts vs DNS & sendmail

Hi All,
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2) can sendmail send to hosts per FQDN listed in /etc/hosts & use a DNS server at the same time?
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When I have entries in /etc/hosts that are not in DNS
and I run say nslookup the utility will not find the
ip. Correct. nslookup and /etc/hosts are controlled by /etc/nsswitch.conf.
Files says to search /etc/hosts.
Anything else says to use that name service.
Put if I ping the entry in /etc/hosts it will
find it.If it is in /etc/hosts and /etc/nsswitch.conf says to search /etc/hosts.
and in /etc/hosts I have a entry with mailhost added
to it at the end. nslookup does not find the box ping
does and sendmail can't send mail to it and I can not
verify that it ever worked correctly. Sendmail can be compiled to use or disregard name server lookups in addition to the /etc/nsswitch.conf file.
sendmail -v e-mail_addr, should show you some basic diagnostics.
1) what is up with nslookup no seeing /etc/hosts?That's the way it works.
2) can sendmail send to hosts per FQDN listed in
/etc/hosts & use a DNS server at the same time?sure, see /etc/nsswitch.conf and the sendmail compile time options.
http://www.ilkda.com/sendmail/
alan

/etc/hosts Private Host Name Fully Qualified Domain Name does it matter?

During installation of 11gR1 on Windows 2003 the examples in the installation guide show adding the Private IP and host name to /etc/hosts
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10.0.0.1 racnode1
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e.g.
10.0.0.1 racnode1 racnode1.mycompany.com
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Does anyone have a recommendation or experience with either situation?
Will (using/ or not using) the FQDN cause me issues in the future?

If it's a problem, the assistent will tell you :-)
I don't think it's a problem.
Please mind that the first entry will be the name of the ip address, if it's not in DNS and a utility tries to get the name. (that's the reason 127.0.0.1 resolves to localhost.localdomain, it's the first entry in /etc/hosts)

SAP on Ubuntu Correct settings for etc/hosts?

Hi,
I installed the SAP test drive version on Ubuntu (VirtualBox). After starting the SAP GUI (
/home/minisap/SAPClients/SAPGUI7.20rev5/bin/guistart /H/ubuntu64/S/3242
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Error: partner 'ubuntu64:3242' not reached
Sun Feb 5 14:07:26 2012
Release 720
Component NI (network interface), version 40
rc = -10, module nixxi.cpp, line 3286
Detail NiPConnect2: 127.0.0.1:3242
System Call connect
Error No 111
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10.0.2.15    ubuntu64    # Added by NetworkManager
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ff02::1 ip6-allnodes
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127.0.0.1      localhost
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OK, I logged on as user nnpladm and typed
startsap nplhost
ps -ef|grep sap
ps -ef|grep sap
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npladm    5209 5187 0 16:16 ?        00:00:00 ms.sapNPL_SCS00 pf=/usr/sap/NPL/SYS/profile/NPL_SCS00_nplhost
npladm    5210 5187 0 16:16 ?        00:00:00 en.sapNPL_SCS00 pf=/usr/sap/NPL/SYS/profile/NPL_SCS00_nplhost
npladm    6414     1 0 16:16 ?        00:00:00 /usr/sap/NPL/DVEBMGS42/exe/sapstartsrv pf=/usr/sap/NPL/SYS/profile/START_DVEBMGS42_nplhost -D
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npladm    6740 6700 0 16:17 ?        00:00:00 ms.sapNPL_DVEBMGS42 pf=/usr/sap/NPL/SYS/profile/NPL_DVEBMGS42_nplhost
npladm    6742 6700 0 16:17 ?        00:00:00 ig.sapNPL_DVEBMGS42 -mode=profile pf=/usr/sap/NPL/SYS/profile/NPL_DVEBMGS42_nplhost
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telnet ubuntu64 3242
Trying ::1...
Trying 127.0.1.1...
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Hello,
I am calling gethostbyname(native_machine_name) in our code, and we do not want this to be dependent on /etc/hosts file. So when we remove all entries from /etc/hosts file, it works well on sparc machine, but the same doesnt work on solaris x86 machine. gethostbyname returns null with errno 2.
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Entries in /etc/hosts are being ingored.

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