[RESOLVED] My CentOS 6 (new install) is NOT keeping my machine name.

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Goody1959
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[RESOLVED] My CentOS 6 (new install) is NOT keeping my machine name.

Post by Goody1959 » 2012/04/03 03:07:49

Perhaps I have a deficiency. But, when I did my install of CentOS 6, I was asked to name the machine. I did so. The name is "grandpa01". I completed the install. Rebooted. Did the updates. And, my machine is still called localhost. Am I working with an incorrect assumption that the machine should carry the name that I gave it? Is my expectation unreasonable? This is the "main" of 2 machines on this home network. (soon to be 3). I thought that they should all have identifiers that are unique in the network. Can someone please give me some information that will help me understand the naming of machines on a home network?Despite the pages of things that I have read since my first attempt, I do not get it.

jwd45244
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Joined: 2011/12/20 20:40:43

Re: My CentOS 6 (new install) is NOT keeping my machine name.

Post by jwd45244 » 2012/04/03 11:53:28

All boxes have the localhost name associated with 127.0.0.1 This is normal

pschaff
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[RESOLVED] My CentOS 6 (new install) is NOT keeping my machi

Post by pschaff » 2012/04/03 15:26:52

Welcome to the CentOS fora. Please see the recommended reading for new users linked in my signature.

Try[code]cat /etc/sysconfig/network[/code]Does the result show your desired hostame? If not then specify it there. You may also want to read [url=http://wiki.centos.org/TipsAndTricks/EmulateFixedAddressByDHCP]TipsAndTricks/EmulateFixedAddressByDHCP[/url] and check out the DNS capabilities of your router.

If more help is needed then please [url=http://www.centos.org/modules/newbb/viewtopic.php?topic_id=28723&forum=54]provide more information about your system[/url] by running "./getinfo.sh network" and showing us the output file.

Goody1959
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Location: NYC, NY

Re: My CentOS 6 (new install) is NOT keeping my machine name.

Post by Goody1959 » 2012/04/04 02:26:03

Okay, here is the getinfo.

Information for general problems.
[code]
== BEGIN uname -rmi ==
2.6.32-220.7.1.el6.i686 i686 i386
== END uname -rmi ==

== BEGIN rpm -qa \*-release\* ==
adobe-release-i386-1.0-1.noarch
centos-release-6-2.el6.centos.7.i686
== END rpm -qa \*-release\* ==

== BEGIN cat /etc/redhat-release ==
CentOS release 6.2 (Final)
== END cat /etc/redhat-release ==

== BEGIN getenforce ==
Enforcing
== END getenforce ==

== BEGIN free -m ==
total used free shared buffers cached
Mem: 3038 2060 977 0 176 1255
-/+ buffers/cache: 628 2409
Swap: 5087 0 5087
== END free -m ==

== BEGIN rpm -qa yum\* rpm-\* python | sort ==
python-2.6.6-29.el6.i686
rpm-libs-4.8.0-19.el6.i686
rpm-python-4.8.0-19.el6.i686
yum-3.2.29-22.el6.centos.2.noarch
yum-metadata-parser-1.1.2-16.el6.i686
yum-plugin-fastestmirror-1.1.30-10.el6.noarch
yum-plugin-security-1.1.30-10.el6.noarch
yum-utils-1.1.30-10.el6.noarch
== END rpm -qa yum\* rpm-\* python | sort ==

== BEGIN ls /etc/yum.repos.d ==
adobe-linux-i386.repo
CentOS-Base.repo
CentOS-Debuginfo.repo
CentOS-Media.repo
== END ls /etc/yum.repos.d ==

== BEGIN cat /etc/yum.conf ==
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
bugtracker_url=http://bugs.centos.org/set_project.php?project_id=16&ref=http://bugs.centos.org/bug_report_page.php?category=yum
distroverpkg=centos-release

== BEGIN yum repolist all ==
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: centos.aol.com
* extras: mirror.umd.edu
* updates: centos.mirror.choopa.net
repo id repo name status
adobe-linux-i386 Adobe Systems Incorporated enabled: 17
base CentOS-6 - Base enabled: 4,764
c6-media CentOS-6 - Media disabled
centosplus CentOS-6 - Plus disabled
contrib CentOS-6 - Contrib disabled
debug CentOS-6 - Debuginfo disabled
extras CentOS-6 - Extras enabled: 4
updates CentOS-6 - Updates enabled: 512
repolist: 5,297
== END yum repolist all ==



# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_grandpa01-lv_root / ext4 defaults 1 1
UUID=bb52e1cf-966b-4070-9d92-3ce59e017f48 /boot ext4 defaults 1 2
/dev/mapper/vg_grandpa01-lv_home /home ext4 defaults 1 2
/dev/mapper/vg_grandpa01-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
== END cat /etc/fstab ==

== BEGIN fdisk -l ==
Disk /dev/mapper/vg_grandpa01-lv_root doesn't contain a valid partition table
Disk /dev/mapper/vg_grandpa01-lv_swap doesn't contain a valid partition table
Disk /dev/mapper/vg_grandpa01-lv_home doesn't contain a valid partition table



== BEGIN cat /proc/mdstat ==
Personalities :
unused devices: <none>
== END cat /proc/mdstat ==

== BEGIN pvs ==
File descriptor 12 (pipe:[48351]) leaked on pvs invocation. Parent PID 15516: /bin/bash
File descriptor 13 (pipe:[48351]) leaked on pvs invocation. Parent PID 15516: /bin/bash
PV VG Fmt Attr PSize PFree
/dev/sda2 vg_grandpa01 lvm2 a-- 372.12g 0
== END pvs ==

== BEGIN vgs ==
File descriptor 12 (pipe:[48351]) leaked on vgs invocation. Parent PID 15516: /bin/bash
File descriptor 13 (pipe:[48351]) leaked on vgs invocation. Parent PID 15516: /bin/bash
VG #PV #LV #SN Attr VSize VFree
vg_grandpa01 1 3 0 wz--n- 372.12g 0
== END vgs ==

== BEGIN lvs ==
File descriptor 12 (pipe:[48351]) leaked on lvs invocation. Parent PID 15516: /bin/bash
File descriptor 13 (pipe:[48351]) leaked on lvs invocation. Parent PID 15516: /bin/bash
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv_home vg_grandpa01 -wi-ao 317.15g
lv_root vg_grandpa01 -wi-ao 50.00g
lv_swap vg_grandpa01 -wi-ao 4.97g
== END lvs ==

== BEGIN rpm -qa kernel\* | sort ==
kernel-2.6.32-220.7.1.el6.i686
kernel-2.6.32-220.el6.i686
kernel-firmware-2.6.32-220.7.1.el6.noarch
== END rpm -qa kernel\* | sort ==

== BEGIN lspci -nn ==

== END lspci -nn ==

== BEGIN lsusb ==
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 046d:08d9 Logitech, Inc. QuickCam IM/Connect
Bus 002 Device 003: ID 045e:0084 Microsoft Corp. Basic Optical Mouse
Bus 002 Device 004: ID 22b8:4285 Motorola PCS Droid X (Mass storage)
Bus 001 Device 009: ID 0bb4:0ff9 High Tech Computer Corp. Desire / Desire HD / Hero (Charge Mode)
Bus 001 Device 013: ID 069b:0717 Thomson, Inc.
== END lsusb ==

== BEGIN rpm -qa kmod\* kmdl\* ==
== END rpm -qa kmod\* kmdl\* ==

== BEGIN ifconfig -a ==
eth0 Link encap:Ethernet HWaddr 00:24:21:1C:42:B4
inet addr:192.168.1.7 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::224:21ff:fe1c:42b4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:866350 errors:1 dropped:0 overruns:0 frame:1
TX packets:569674 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1272589022 (1.1 GiB) TX bytes:43782504 (41.7 MiB)
Interrupt:27 Base address:0x6000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:480 (480.0 b) TX bytes:480 (480.0 b)

== END ifconfig -a ==

== BEGIN brctl show ==
bridge name bridge id STP enabled interfaces
== END brctl show ==

== BEGIN route -n ==
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
== END route -n ==

== BEGIN cat /etc/resolv.conf ==
# Generated by NetworkManager
nameserver 192.168.1.1
== END cat /etc/resolv.conf ==

== BEGIN grep net /etc/nsswitch.conf ==
#networks: nisplus [NOTFOUND=return] files
#netmasks: nisplus [NOTFOUND=return] files
netmasks: files
networks: files
netgroup: nisplus
== END grep net /etc/nsswitch.conf ==

== BEGIN chkconfig --list | grep -Ei 'network|wpa' ==
NetworkManager 0:off 1:off 2:on 3:on 4:on 5:on 6:off
network 0:off 1:off 2:off 3:off 4:off 5:off 6:off
wpa_supplicant 0:off 1:off 2:off 3:off 4:off 5:off 6:off
== END chkconfig --list | grep -Ei 'network|wpa' ==

[/code]

pschaff
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Re: My CentOS 6 (new install) is NOT keeping my machine name.

Post by pschaff » 2012/04/04 11:32:45

Nothing too odd there other than no [b]lspci -nn[/b] output. How about [b]/etc/sysconfig/network[/b]? Did you read the DHCP article?

Goody1959
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Location: NYC, NY

Re: My CentOS 6 (new install) is NOT keeping my machine name.

Post by Goody1959 » 2012/04/04 17:59:40

First, thanks to those that offered assistance.

I think that the problem I had was that I only gave "grandpa01" as the name for the machine. There was no domain info( grandpa01.grandpa.net ) so I think the system defaulted to localhost.localdomain..

I went to the library this morning and took out "The Centos Bible". While it was written for 5.3 I think that I might find it a bit easier at first to work with a book to get some of the concepts and tool usage figured out. Once I have a better understanding of the system I (hopefully ) won't ask questions that could have been avoided. I will spend a couple of weeks working with the book, and, going wherever that leads me on the web. I hope it will help me target my issues better and save some bandwidth.
One again, thanks.

Moderator: Should this be marked solved or resolved??

pschaff
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Re: [RESOLVED] My CentOS 6 (new install) is NOT keeping my machine name.

Post by pschaff » 2012/04/04 18:44:53

[quote]
Goody1959 wrote:
First, thanks to those that offered assistance.

I think that the problem I had was that I only gave "grandpa01" as the name for the machine. There was no domain info( grandpa01.grandpa.net ) so I think the system defaulted to localhost.localdomain.. [/quote]
Having a domain part of the name may indeed help, but the hostname needs to be specified in the right place to "stick".

[quote]
I went to the library this morning and took out "The Centos Bible". While it was written for 5.3 I think that I might find it a bit easier at first to work with a book to get some of the concepts and tool usage figured out.[/quote]
That's rather dated for CentOS-6 but probably OK for general concepts. For something closer to the mark that can be had for a song, an older Fedora book such as [url=http://www.google.com/products/catalog?q=fedora+bible&oe=utf-8&rls=org.mozilla:en-US:unofficial&client=firefox-a&um=1&ie=UTF-8&tbm=shop&cid=9326655267448941255&sa=X&ei=HJR8T6O8BsqTgweRuNXfCw&ved=0CGcQ8wIwBA]"Fedora Bible 2010 Edition: Featuring Fedora Linux 12" by Christopher Negus, Eric Foster-Johnson[/url] would be closer to the mark, as CentOS-6 is derived from Fedora 12/13, whereas CentOS-5 is most closely related to Fedora 6 - quite a lot different.

[quote]
Once I have a better understanding of the system I (hopefully ) won't ask questions that could have been avoided. I will spend a couple of weeks working with the book, and, going wherever that leads me on the web. I hope it will help me target my issues better and save some bandwidth. [/quote]
Good plan. :-)

[quote]
Moderator: Should this be marked solved or resolved??[/quote]
Either will do, but I'd probably say [RESOLVED] which is a bit [i]squishier[/i].

Goody1959
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Location: NYC, NY

Re: [RESOLVED] My CentOS 6 (new install) is NOT keeping my machine name.

Post by Goody1959 » 2012/04/04 19:14:43

Thank you for the information regarding the derivation of C06. I will go for the Fedora book.

pschaff
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Re: [RESOLVED] My CentOS 6 (new install) is NOT keeping my machine name.

Post by pschaff » 2012/04/04 20:11:34

You are welcome. I wish you a fruitful learning experience.

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