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Locked out of the CentOS Fora
by Dan White 15 Aug '16

15 Aug '16

The username/email combo I give the "forgot password" option does not work and I cannot re-register as it says my email is in use. Suggestions ? Dan White | d_e_white(a)icloud.com ------------------------------------------------ “Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.” (Bill Waterson: Calvin & Hobbes)

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Re: [CentOS] how to update from 5.8 to 5.latest?
by Kai Schaetzl 15 Aug '16

15 Aug '16

Eero Volotinen wrote on Mon, 15 Aug 2016 11:00:51 +0000: > Maybe your repodata cache was a bit old :) Yeah. I would have thought it checks the date of the file and tries to update it when it's that old. Anyway, clearing the whole yum cache was a good idea as I don't need the 5.8 rpms anymore. I just didn't think about that first, it's been long ... Thanks for the quick reply! It assured me that there was no special procedure necessary, so I thought again and remembered that. Kai

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how to update from 5.8 to 5.latest?
by Kai Schaetzl 15 Aug '16

15 Aug '16

Hi! I revived an old disk with CentoS 5.8 on it and want to update it to 5.latest (=5.11). However, it insists on getting 5.8 files. From the past I remember I would get a major release jump from 5.n to 5.m automatically. Or do I remember this wrong? I googled a bit around, but couldn't really find something similar. How do I update now? The repo file looks exactly like on machines that are up to 5.11. Should I change it manually to 5.11 or just 5 paths? Does it still understand that this is then an upgrade to a another major version? Or should I do something different to make it upgrade to 5.11? Thanks! Kai

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OT: Backup Question/Solution
by TE Dukes 14 Aug '16

14 Aug '16

Hello, I want to switch from DVDs as a backup medium to a usb flash drive. I have been using Mondo but get tired of feeding it DVD+RWs. I purchased a 128GB flash drive. I can't get Mondo to write to it. I want to be able to make this device bootable. Do I need it reformat it from a Windows file system to ext4? I never had to format a blank DVD previously. Is there a better solution for backing up a home system to some sort of external media? TIA

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Duplicate *.desktop entries for GNOME in /usr/share/applications
by Nicolas Kovacs 14 Aug '16

14 Aug '16

Hi, Today I noticed something strange. There seem to be a series of duplicate desktop menu entries in /usr/share/applications. Example: gedit.desktop and org.gnome.gedit.desktop Other example: nautilus.desktop and org.gnome.Nautilus.desktop This is annoying, since I usually edit some custom menu entries for my users. Now, if I edit both files for a single application, I end up with duplicate menu entries. Any suggestions? Cheers, Niki -- 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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Software RAID and GRUB on CentOS 7
by Nicolas Kovacs 13 Aug '16

13 Aug '16

Hi, When I perform a software RAID 1 or RAID 5 installation on a LAN server with several hard disks, I wonder if GRUB already gets installed on each individual MBR, or if I have to do that manually. On CentOS 5.x and 6.x, this had to be done like this: # grub grub> device (hd0) /dev/sda grub> device (hd1) /dev/sdb grub> root (hd0,0) grub> setup (hd0) grub> root (hd1,0) grub> setup (hd1) grub> quit I'd like my server to be able to boot a degraded software RAID after an eventual hard disk failure. 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 7 :: cannot update
by Adrian Sevcenco 13 Aug '16

13 Aug '16

Hi! I have a very strange problem with my centos 7 vm : i cannot update!! I have normal ingress/egress access but my yum update fills my screen with : [Errno 14] HTTP Error 404 - Not Found i already done "clean all" ... anyone seen this problem? any idea about the issue and workarounds? Thank you! Adrian

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[CentOS6] Manually configured Firewall (WLAN-AP plus Router)
by Walter H. 13 Aug '16

13 Aug '16

Hello I've got this Mini-PC https://www.zotac.com/product/mini_pcs/zbox-ci323-nano everything is fine -> latest 6.8 kernel works; both Ethernet-Interfaces work and also the WLAN-Interface works; the two Ethernet-Interfaces are eth0 and eth1 the WLAN-Interface is wlan0 eth1 is connected on ISP side eth0 is connected on my LAN side to a switch; and wlan0 shall also be on my LAN side für wireless and work as an Access-Point (this works) I want both LAN interfaces (eth0 and wlan0) have the same IP subnet so I did this: http://www.microhowto.info/howto/persistently_bridge_traffic_between_two_or… also the DHCP works fine: both DHCP and DHCPv6; RADVd also works fine; in /etc/sysconfig/network-scripts/ I added ifcfg-sit1 with the configuration for my IPv6 tunnel at Hurricane Electric there is the following entry: IPV6TUNNELIPV4LOCAL=ipv4addr here the 1st question: does this have to be the IPv4 address of br0 (LAN) or the one of eth1 (WAN)? (before I had this on a virtual machine, there was only one interface, but here ...?) and now the bigger problem: here just the IP addresses for better troubleshooting; the ISP installed a box (NAT router), that is a medium converter (coaxial cable to ethernet twisted-pair cable), too; this box has on WAN side, my public IP an LAN side it has 192.168.0.1 this box which should be installed instead of my old NAT-router has the following IP addresses on device br0 192.168.1.100 (LAN) and on device eth1 (WAN) 192.168.0.127 the old router has on LAN side 192.168.1.254 and on WAN side 192.168.0.254 now both the new box and the old router are connected "parallel" which means, each is connected with its WAN interfaces to the built-in switch of ISP-box and with its LAN interfaces to my switch; on the old NAT-router I have defined the LAN-IP of the new box as DHCP relay; this works fine; (the new box is the only DHCP server in LAN) <begin /etc/sysconfig/iptables> # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT DROP [0:0] # ICMP: extra chain -N ALLOWED-ICMP -A ALLOWED-ICMP -p icmp -m limit --limit 1/sec --limit-burst 2 -j ACCEPT # Allow anything on the local link -A INPUT -i lo -j ACCEPT -A OUTPUT -o lo -j ACCEPT # Allow anything out on the localnet -A OUTPUT -o br0 -j ACCEPT # Allow established, related packets back in -A INPUT -i br0 -m state --state ESTABLISHED,RELATED -j ACCEPT # Enable DHCP -A INPUT -p udp -i br0 --dport 67:68 --sport 67:68 -j ACCEPT # Enable IPv6 -A INPUT -p ipv6 -i eth1 -s 216.66.80.30 -j ACCEPT # Allow SSH from LAN and redirected from internet # from WLAN there should be no SSH possible, so I used eth0 -A INPUT -i eth0 -m tcp -p tcp --dport 22 -m state --state NEW -j ACCEPT -A INPUT -i eth1 -d 192.168.0.127 -m tcp -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 115 --hitcount 3 --name DEFAULT --rsource -j DROP -A INPUT -i eth1 -d 192.168.0.127 -m tcp -p tcp --dport 22 -m state --state NEW -m recent --set --name DEFAULT --rsource -A INPUT -i eth1 -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT # Allow anything out on the internet -A OUTPUT -o eth1 -j ACCEPT # Allow established, related packets back in -A INPUT -i eth1 -m state --state ESTABLISHED,RELATED -j ACCEPT # Allow multicast -A INPUT -d 224.0.0.0/4 -j ACCEPT -A OUTPUT -d 224.0.0.0/4 -j ACCEPT # Allow Forwarding on LAN interfaces -A FORWARD -i br0 -o br0 -d 192.168.1.0/24 -j ACCEPT # Allow Forwarding to WAN interface -A FORWARD -i eth0 -o eth1 -s 192.168.1.0/24 -j ACCEPT -A FORWARD -i wlan0 -o eth1 -s 192.168.1.0/24 -j ACCEPT # Allow established, related packets back through -A FORWARD -i eth1 -o eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT -A FORWARD -i eth1 -o wlan0 -m state --state ESTABLISHED,RELATED -j ACCEPT -A FORWARD -i eth1 -o eth0 -j LOG --log-prefix "IP[FWD-Reply]: " --log-level 7 -A FORWARD -i eth1 -o wlan0 -j LOG --log-prefix "IP[FWD-Reply]: " --log-level 7 # Only pings with restricted icmp are allowed -A INPUT -i eth1 -p icmp -j ALLOWED-ICMP # Enable TRACEroute to me -I INPUT -i eth1 -p udp -d 192.168.0.127 --sport 32769:65535 --dport 33434:33523 -j ACCEPT # Enable SSH to me -I INPUT -i eth1 -p tcp -d 192.168.0.127 --dport 22 -j ACCEPT # Log all other -A INPUT -j LOG --log-prefix "IP[IN]: " --log-level 7 -A FORWARD -j LOG --log-prefix "IP[FWD]: " --log-level 7 -A OUTPUT -j LOG --log-prefix "IP[OUT]: " --log-level 7 COMMIT <end /etc/sysconfig/iptables> I have several virtual machines which have configured the old NAT-router als gateway; they all work fine; one virtual machine (OS = Win7) has the new box configured as gateway with IP address 192.168.1.6 I have a old notebook (OS = WinXP) that is "connected" via WLAN to the new box and this has 192.168.1.4 as IP address; both can ping each other the VM and this notebook; here the questions: should I use eth0 and wlan0 or br0 in the iptables and ip6tables roules? why is it possible to ping the VM or the notebook from the new box, but not the other way? Thanks for any help; Greetings, Walter

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Re: [CentOS] LSI SATA MegaRaid & Centos 7 build 1511
by Gordon Messmer 13 Aug '16

13 Aug '16

On 08/13/2016 02:15 AM, Fawzy Ibrhim wrote: > I have double checked again and yes it's Fakeraid from LSI. > Also it's not shown in "lspci -nn" output. In your original message, you indicated that this was a PCI card, but it looks like this is just a firmware component of your motherboard. I think you should assume that this firmware is unsupported. Set your SATA mode to AHCI in the BIOS, and then use "dmraid -r -E" to remove the RAID metadata from those disks: https://bugs.centos.org/view.php?id=9813 You should be able to install using Linux software RAID.

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Re: [CentOS] Linux TCP flaw
by Andrew Dent 12 Aug '16

12 Aug '16

Would a successful attack on the IP address of a VPS in a Plesk environment expose the VPS, the Virtual Host or both (and all other VPSs)? ------ Original Message ------ From: "Johnny Hughes" <johnny(a)centos.org> To: centos(a)centos.org Sent: 12/08/2016 9:08:23 PM Subject: Re: [CentOS] Linux TCP flaw >On 08/12/2016 05:58 AM, Andrew Dent wrote: >> Thanks for the info Peter. >> The VPS is running on a Plesk environment. >> > >Right, and in a Plesk environment there is only one kernel on the main >machine, and all the VPS machines use it. So the hosting provider has >to make all kernel mods. > >

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