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CentOS 6 and pxeboot
by m.roth＠5-cent.us 12 Apr '17

12 Apr '17

Hi, folks, We've been using pxeboot to pull up a menu, to build or rebuild machines for years. We have this new server, and it fails. Times out. What's happening is that it tries in this order .../pxelinux.cfg/b8945908-d6a6-41a9-611d-74a6ab80b83d .../pxelinux.cfg/01-88-99-aa-bb-cc-dd .../pxelinux.cfg/C0A8025B .../pxelinux.cfg/C0A8025 .../pxelinux.cfg/C0A802 .../pxelinux.cfg/C0A80 .../pxelinux.cfg/C0A8 .../pxelinux.cfg/C0A .../pxelinux.cfg/C0 .../pxelinux.cfg/C .../pxelinux.cfg/default The first are MAC addresses, etc. I want it to pull default. It takes *minutes* to time out each option, so after a dozen or 15 min, when it gets to defaul, tftp has timed it out. Now, our dhcpd config has this for pxeboot: group { allow booting; allow bootp; filename "gpxelinux.0"; option-209 = "pxelinux.cfg/default"; option subnet-mask 255.255.254.0; option routers <our router>; default-lease-time 172800; # 2 days. max-lease-time 432000; # 5 days. I added that option-209, but it didn't take. I've been looking at the docs, but if someone's can tell me off the top of their head what I need to do, I'd appreciate it. This has become a high priority today.... mark

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jave-1.5.0 on centos 7...
by Ian Diddams 11 Apr '17

11 Apr '17

Curring a long story short... we had a centos 5 server running jboss 6 and jboss 4.2.3GA because of centois 5 EOL TPTB have decreed this server needs migratiung to a Centos 7 server But... the hboss 4.2.3GA jboss app uses java 1.5.0 (_22 FTWT). I can't *(unsurprisingly!) find java 1.5.0 under yum. anyone got it in an rpm or know where it can found? (At his stage it is merely a guess that it will run under centos 7 anyway!) cheers ian

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Re: [CentOS] OT: systemd Poll
by James B. Byrne 11 Apr '17

11 Apr '17

On Sun, April 9, 2017 00:39, Anthony K wrote: > According to "Arthur Schopenhauer": > > "All truth passes through three stages. > First, it is ridiculed. > Second, it is violently opposed. > Third, it is accepted as being self-evident." > > I must admit that I skipped through the first and second stages - I > never found creating init scripts a joy and instead opted to write my > own scripts that I launched via inittab. As such, I welcomed the > simplicity systemd's service files without fuss. > > So, at which stage are you in w/ regards to adopting systemd? Are you > still ridiculing it, violently opposed to it, or have you mellowed to > it? > A. FreeBSD-11. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Fwd: Obsolete NSA exploit for Postfix 2.0 - 2.2
by Robert Moskowitz 10 Apr '17

10 Apr '17

This was just posted on the Postfix list. Centos 7 ships with: postfix-2.10.1-6.el7 Has this cert advisory been applied to the Centos build of Postfix? thank you -------- Forwarded Message -------- Subject: Obsolete NSA exploit for Postfix 2.0 - 2.2 Date: Sun, 9 Apr 2017 16:18:06 -0400 (EDT) From: Wietse Venema <wietse(a)porcupine.org> To: Postfix users <postfix-users(a)postfix.org> CC: Postfix announce <postfix-announce(a)postfix.org> A recent twitter post reveals the existence of an exploit for Postfix, in a collection of what appear to be NSA tools. https://twitter.com/JulianAssange/status/850870683831648256 This is an exploit for Postfix 2.0 - 2.2, for a bug that was fixed 11 years ago in Postfix 2.2.11 and later. There was a memory corruption bug in a Postfix workaround for a Sendmail bug (CERT advisory CA-2003-07, remote buffer overflow when message headers contain lots of comment text before an email address). Technical details: the Postfix strip_address() function, which removes large comments from a mail header, called the printable() function on a string that wasn't null-terminated. This caused the printable() function to scribble past the end of malloc()ed memory, corrupting the memory heap. Running the exploit against Postfix versions less than 11 years old results in odd-looking email messages in the super-user's mailbox, and warning messages in the maillog file (warning: stripping too many comments from address: <long character string>). Wietse

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logwatch customization question
by Robert Moskowitz 09 Apr '17

09 Apr '17

Logwatch is installed, and I am assuming by how empty /etc/logwatch is that it is running from defaults, which I find in /usr/share/logwatch/default.conf/services I want to customize ONE service. dovecot. Do I copy /usr/share/logwatch/default.conf/services/dovecot.conf to /etc/logwatch/conf/services and edit it there, or do I have to copy ALL default.conf/services/* there and modify /etc/logwatch/conf/logwatch.conf to look there? The README is rather not helpful on this. How do I modify ONE service (and not just make the changes in default.conf that I have seen in a couple howtos. thanks

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Network configuration: desktop vs. laptop
by Nicolas Kovacs 09 Apr '17

09 Apr '17

Hi, I'm just migrating some stuff from Slackware Linux to CentOS, and I have a question about the orthodox way of configuring a network connection. On a desktop or workstation, I usually get rid of NetworkManager: # systemctl stop NetworkManager # yum remove NetworkManager Then I edit the /etc/sysconfig/network-scripts/ifcfg-XXXXX file corresponding to my network interface. Here's a working example: # /etc/sysconfig/network-scripts/ifcfg-enp2s0 DEVICE=enp2s0 TYPE=Ethernet ONBOOT=yes BOOTPROTO=dhcp Now I wonder how I should configure things on a laptop, where I usually keep NetworkManager. On a Slackware system, it's usually just a matter of leaving a pristine /etc/rc.d/rc.inet1.conf file, and then activate /etc/rc.d/rc.networkmanager. Starting from there, when there's a wireless connection available, I can connect using the little NetworkManager applet on the desktop. And when I switch to cable, NetworkManager will prefer that connection automagically. On a default installation (I went for the KDE version), NetworkManager is active, so I'll keep that. 'ifconfig' shows me that the cabled connection is up and running via enp3s0 on the laptop. Wireless doesn't seem to work, but 'ifconfig -a' shows me a wlp2s0 interface, which means there's a chance it will work. First thing I did was edit ifcfg-enp3s0 like this: DEVICE="enp3s0" TYPE="Ethernet" NM_CONTROLLED="yes" Then I edited ifcfg-wlp2s0 from scratch, since there's nothing present: DEVICE="wlp2s0" TYPE="Wireless" NM_CONTROLLED="yes" I rebooted (just to be on the safe side), and I have a partial success. I can connect via KDE's NetworkManager applet. But when I plug in an Ethernet cable, the wireless connection stays up and is not replaced by the cabled connection. Any suggestions? Niki Kovacs -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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centos-release srpm for 6.9
by me＠tdiehl.org 08 Apr '17

08 Apr '17

Hi, Is the centos-release srpm available anywhere? I do not see any srpms in vault. Regards, -- Tom me(a)tdiehl.org Spamtrap address me123(a)tdiehl.org

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how to use livecd-creator to create my own livecd iso as same as offical release iso？
by 王强 08 Apr '17

08 Apr '17

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How to remove or disable xhci driver in images/pxeboot/vmlinuz in livecd iso
by 王强 08 Apr '17

08 Apr '17

Hello list, Is there an easy way to remove or disable xhci driver in images/pxeboot/vmlinuz? I need to avoid USB 3.0 controller to work in xhci mode when thn ananconda is working.

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Centos7-arm mailserver guide
by Robert Moskowitz 07 Apr '17

07 Apr '17

Three months in development! (well a couple hours a day) I am 99% complete! http://medon.htt-consult.com/Centos7-mailserver.html Virtual Mail Hosting on Centos7 Using Postfix MariaDB Dovecot PostfixAdmin Amavisd-new Spamassassin and Clamav The server is running in test right now. I will later go through this again to build the production unit. I welcome all reviews and comments.

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