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imaging a drive with dd
by Robert Moskowitz 03 Mar '17

03 Mar '17

I am building a mailserver and with all the steps, I want to image the drive at various 'checkpoints' so I can go back and redo from a particular point. The image is currently only 4GB on a 120GB drive. Fdisk reports: Disk /dev/sdb: 111.8 GiB, 120034124288 bytes, 234441649 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x0000c89d Device Boot Start End Sectors Size Id Type /dev/sdb1 2048 1026047 1024000 500M 83 Linux /dev/sdb2 1026048 2074623 1048576 512M 82 Linux swap / Solaris /dev/sdb3 2074624 6268927 4194304 2G 83 Linux and parted: Model: Kingston SNA-DC/U (scsi) Disk /dev/sdb: 120GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext3 2 525MB 1062MB 537MB primary linux-swap(v1) 3 1062MB 3210MB 2147MB primary ext4 what dd params work? dd if=/dev/sdb of=os.img bs=1M count=3210 ? thanks

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C 7.3 sshd will not reload
by me＠tdiehl.org 03 Mar '17

03 Mar '17

Hi, Since upgrading to 7.3 I am having a problem getting sshd to reload after configuration changes. When I issue the command "systemctl reload sshd.service" I get the following error: "Unit sshd.service cannot be reloaded because it is inactive." It is obviously still running because I am connected over ssh to the machine and netstat shows it is listening. (vnewman pts3) # netstat -tulpn | grep ssh tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 29249/sshd tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 3012/sshd: root@pts (vnewman pts3) # If I reboot the machine, then everything is OK. Has anyone seen this behavior or more importantly know how to fix it? Regards, -- Tom me(a)tdiehl.org Spamtrap address me123(a)tdiehl.org

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A firefox/CentOS 7 oddity
by m.roth＠5-cent.us 03 Mar '17

03 Mar '17

I just switched to a new workstation, running C 7, the other day. I was looking at a blog, and in the thread of cmts, I wanted to play this one youtube video. I listened, then closed the tab. The video that had been *above* it in the thread started playing, and hasn't stopped. Every other time until now that I've done this, closing the tab shuts down the video.... mark

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what's the max thread number per process in centos
by qw 03 Mar '17

03 Mar '17

Hi, I have one question: what's the max thread number per process in centos? Thanks! Regards Andrew

3 3

Laptop turns off after lid closed Centos6
by david 03 Mar '17

03 Mar '17

Folks I have a laptop which i am using temporarily as a test server. It is permanently plugged in. It is running Centos 6, command line only. In the past, I could close the lid, thereby turning off the display, but not turning off the machine. It remained running indefinitely. A recent update (this past week) changed that behavior. Now, when I close the lid, the laptop turns itself off within an hour. A google search talks about tools like "upower" and apcitool, but a "yum search" does not locate them. Is there a way to revert back to the previous behavior? Thanks David

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MRTG and eth0
by Matt 03 Mar '17

03 Mar '17

Is there an easy way to graph ethernet eth0 on Centos 7 with MRTG without using SNMP? I thought I found a way to do this in past by using a shell script to poll the interface but cannot find it back.

2 1

Lenovo M900 with CentOS 7 strangeness
by SZ, Zsolt 03 Mar '17

03 Mar '17

Hello, I would like to install CentOS 7.3 on my new Lenovo M900 machine. I am using the official 1 DVD installer. The installation process was fine without any error but after reboot the USB keyboard and the USB mouse did not work. Therefore I was not able to type anything or pass the first boot screen. Only the power button is working. Any idea why? I believe the installation media is using the same kernel components as the installed machine. So why the installer is working and the installed system is not? BR, Zsolt

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Using Apache 2.2 config files on Apache 2.4
by Mark Weaver 02 Mar '17

02 Mar '17

Hello List, I'm in the process of migrating LAMP servers. I've got a C5 LAMP server in my rack that has been running faithfully without complaint for the past 9 years. In some ways I really hate to move out of it, but there are things to get done, things to consider and reasons that make the migration necessary. I've got a C7 server loaded and the basic configuration partially completed. All the packages I need to replace the old server are in place. But I've reached a point where something has come up and I don't know the answer to: Can I use the configuration files and methods I'm accustomed to from apache 2,2 from my C5 server with Apache 2.4 on the new C7 server? I've been looking at the way thing are done with Apache 2.4 on C7 and in regards to SSL configuration I really don't care for it. It seems convoluted and a bit unnecessarily complicated. /I'm sure there's a good reason for it... I'm either not seeing it, or I'm sub-consciously not interested in why it's this way./ Thanks in advance, Mark

2 4

CentOS-announce Digest, Vol 145, Issue 1
by centos-announce-request＠centos.org 02 Mar '17

02 Mar '17

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2017:0352 Important CentOS 6 qemu-kvm Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 1 Mar 2017 12:08:31 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2017:0352 Important CentOS 6 qemu-kvm Security Update Message-ID: <20170301120831.GA3705(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2017:0352 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2017-0352.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: d98ea83c921266bec1265d80c2ecd23393fbb1d38ac26e4afc346f505b339d71 qemu-guest-agent-0.12.1.2-2.491.el6_8.7.i686.rpm x86_64: 30f8f516f9f9c8724a45ec5f027504306ff55f50fa6b582c4807499e476bc838 qemu-guest-agent-0.12.1.2-2.491.el6_8.7.x86_64.rpm 9e92c88f855f17f79d0a351b149d13a42e6e6191627811a905a90579430d3d16 qemu-img-0.12.1.2-2.491.el6_8.7.x86_64.rpm 6a0fe555a926f37c12c6d08db27cb42ed0ddc411a4ec26da5e91f70786fd28c0 qemu-kvm-0.12.1.2-2.491.el6_8.7.x86_64.rpm 47316c5ecd2765d102ee51b2d7cfa8a532dd761a7972d7e307ed727c72004ca7 qemu-kvm-tools-0.12.1.2-2.491.el6_8.7.x86_64.rpm Source: 111fd18646f7aac66fd719a05b74761f348404309672c7fb93f3efefdd631233 qemu-kvm-0.12.1.2-2.491.el6_8.7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 145, Issue 1 ***********************************************

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system encryption question
by FHDATA 02 Mar '17

02 Mar '17

Hello, Centos 7.x Let say a clean-install of Centos 7.x is being performed on a box simply with two partitions / and /boot ... and that there is no extra complexity like lvm , raid ,etc,etc ... Centos 7.x process allows / to be encrypted with pass phrase... How can a key, residing on a usb flash drive, to be added to the encryption of / ? So the system needs both manual input of pass phrase as well as presence of usb flash drive to come up after getting rebooted. Thank you, F-

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