Discuss October 2012

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162 participants
168 discussions

Re: [CentOS] CONFIG_ARPD turned on in centosplus kernel.
by Akemi Yagi 12 Dec '12

12 Dec '12

On Thu, May 17, 2012 at 11:33 AM, Steve Clark <sclark(a)netwolves.com> wrote: > On 05/05/2012 04:45 PM, Akemi Yagi wrote: > > On Sat, May 5, 2012 at 12:40 PM, Steve Clark <sclark(a)netwolves.com> wrote: > > http://bugs.centos.org/view.php?id=5709 > > I actually took the latest centosplus kernel srpm and got it going in my > environment (would like to have > semi official support though ;-) ). It has been running stable for a > couple of weeks now. > > I have 4 systems setup using it and opennhrp in a DMVPN hub and spoke > arrangement. > I have 2 hubs with each of the spokes connected to each of the hubs. The > spokes would be units in the field while > the hubs would be at HQ in a failover environment using OSPF amongst them > all. > > I've updated the RFE you filed with some info. Will be nice if you > also add the above note in there. > > Akemi > _______________________________________________ > > Thanks Akemi, > > I am just preparing to test the new kernel. That's great. I closed the bug report thinking there would be no response. I will reopen it so that you can add your test result. Akemi

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Re: [CentOS] 'localyum' alias...
by Fabien Archambault 19 Nov '12

19 Nov '12

2012/7/23 Fernando Cassia <fcassia(a)gmail.com>: > This alias should be a great default addition to the bashrc... as it > helps install packages to a CentOS system from the mounted install CD > before you get networking up and running... > > alias localyum='yum --disablerepo=* localinstall' > > Does Red Hat care about Requests for Enhancement? or is filing a bug pointless? > > FC Since the latest version of yum obsolete (in Fedora at least so I believe in CentOS it is/will be the same) the localinstall option, I believe that using this alias is useless. Fabien

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SSHMenu (Gnome Applet) for CentOS 6
by Nikolaos Milas 05 Nov '12

05 Nov '12

Hello, I know that there exists a package for Gnome SSHMenuApplet for CentOS 5 (e.g. see http://rpmfind.net/linux/RPM/epel/testing/5/ppc/gnome-applet-sshmenu-3.15-5…). The package sshmenu (which I found here: http://dl.marmotte.net/rpms/redhat/el6/x86_64/sshmenu-3.18-7.el6/sshmenu-3.…) states: ======================================== Summary : Application to organize SSH connection information in a menu URL : http://sshmenu.sourceforge.net/ License : BSD Description : SSHMenu is a small program (which is to be used outside of GNOME) that : keeps all your regular SSH connections within a single menu. If you wish to : have the full GNOME applet version of the menu, install gnome-applet-sshmenu. ======================================== However, I can't find a gnome-applet-sshmenu RPM package for el6. So, does anyone knowof a gnome-applet-sshmenu RPM package for el6 (or can anyone provide one)? It should include SSHMenu v3.18. There is a package for FC15: ftp://fr2.rpmfind.net/linux/fedora/linux/releases/15/Everything/x86_64/os/P…, but Idon't know if it can/should be used in CentOS 6. Notes: sshmenu (v3.15) exists in EPEL for CentOS 5, but gnome-applet-sshmenu does not. Both (v3.15) exist in Extras repo. Neither exists in EPEL for Centos 6. Please advise. Thanks, Nick

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network and stability issues
by Karanbir Singh 01 Nov '12

01 Nov '12

hi Guys, Over the last 24 hours we have had a series of stability issues. First, the DC our mail/lists machine is hosted in had power issues ( Internap LGA9, NY, USA ); then we had a h/w failure and needed a chassis swap ( thanks to the guys in the DC who executed this within minutes ); and we have since again had network issues - although power to the DC and the server seems stable now. Over the next 24 hours, lets just try and be a bit patient and work with this. We have good backups so if things dont stabalise in the next 24 hrs we will failover. The primary reason we have not done this as yet ( failover ), is down to the fact that its taken a long time, in years, for us to build a reputation with large hosting facilities and email providers and are on many whitelists. Moving the host over makes it hard for us to get that sort of level of trust again really quickly. Longer term, we should perhaps spread the load through multiple machines and then ensure we have good relationships out of all these machines exit IP's with the various vendors and service providers. There are backup MX's in place, so if there are issues with the primary machine, we will have mail's go into holding queues and we should not lose anything inbound. -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219 | Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc

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Virtualization Options!
by Antonio da Silva Martins Junior 01 Nov '12

01 Nov '12

Hi, I'm searching for "virtualization options". I already take a look on VMware, but it needs too much MS software to work for my needs. Citrix needs less, but the key validation is still MS-AD. Now I'm taking a look at RHEV... and run into Oracle VM! Somebody had already take a look at Oracle VM? We need in primary a solid VM solution for an "enterprise cloud" running on top of some old and new Dell servers in conjunction with an EMC Cx4-120 storage. We had plans to provide "desktop virtualization" in the future, most to labs class, and maybe adminstrative tasks. But it isn't necessary now. Anybody had some other options to tell? Thanks in advance, Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows | | Universidade Estadual de Maringá - Brasil| what evil lurks in the | | NPD - Núcleo de Processamento de Dados | Heart of Men!" | | E-Mail: asmartins(a)uem.br / shadow(a)uem.br | !!! Linux User: 52392 !!! | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Real Programmers don’t need comments — the code is obvious." -- Esta mensagem foi verificada pelo sistema de antivirus e acredita-se estar livre de perigo.

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Centos 6.2 x64 after GRUB menu, black screen with blinking cursor
by David McGiven 31 Oct '12

31 Oct '12

Dear CentOS users, I installed CentOS 6.2 x64 in a Sun Fire X4450 machine, it has 4 disks and I configured them to be a single volume (no RAID). The installer sees the volume perfectly, its 570Gb. I created two ext3 partitions, /dev/sda1 and /dev/sda2. In the logs I see they are formated correctly. All the files are installed. Then when I reboot, I get to the GRUB menu. Choose the first and only option, and immediately after that I only see a black screen with blinking cursor on top left. I've tried recreating the grub manually with : find /boot/grub/stage1 (reported it on hd0,0) root (hd0,0) setup (hd0) quit Then I try to boot and I get the same blinking cursor. I tried another approach with no luck either : replacing root=LABEL=UUID for root=/dev/sda1 just to see if this could help ... but I have the same problem. I don't really now what's going on. Is there anyway to put grub into verbose mode so I can see what exactly it is doing or looking for ? Thanks in advance. Regards.

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test
by Nux! 31 Oct '12

31 Oct '12

test -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro

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Issue installing Centos server on Vmware Fusion/Server
by Madhurranjan Mohaan 31 Oct '12

31 Oct '12

Hi All, I've had issues over the last few days trying to create a Centos server image . I've tried with Vmware fusion and Vmware server and it skips directly to the default desktop install and doesn't give me the option to run the linux server. I am not sure if you've seen this earlier. I've tried with Centos 5.8 and 6.0 but the installer seems to work in that manner . Thoughts around how to fix this ? Thanks Mamu

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Gnome Screensaver - not functioning as advertised
by Rob Kampen 31 Oct '12

31 Oct '12

Hi List, Currently running a couple of CentOS 6.3 workstations / laptops with gnome as the default window manager. Since the original 6.1 install the behaviour of the screensaver has changed. I use the cosmos theme and have this activate after five minutes of idle. Initially, when the five minutes were up, the screen would start to dim and if one moved the mouse or hit a key on the keyboard it would drop out of screensave and return to full bright screen. With one of the updates since then, the behaviour has changed - now once the 5 minutes are up - one has to wait until the gradual dimming of the screen is complete (a couple of seconds) and only then move the mouse or hit a key to show the password dialog - enter password and then get a working screen - all quite time consuming. So I thought, remove the "Lock screen when screensaver is active" - I have unchecked this option, logged in and out, and it just ignores it and insists on a password - always. I guess there is some option buried deep within the gnome system panel that needs some attention - any ideas? My preference is to have it back to the original behaviour, once the screen begins to fade, a mouse movement or key click prevents the screensaver from gaining complete control and needing the password entry dialog etc. all my precious seconds being wasted - especially as I have a 5 minute idle setting. Suggestions welcome TIA Rob

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Network issue - Windows works but CentOS does not
by xrx 31 Oct '12

31 Oct '12

I am having an extremely strange issue with a BL460c1 (G1) blade on a c7000 enclosure. I could not for the life of me get the machine to ping the gateway or any other blade on the same enclosure (yes, the subnet mask was correct & quadruple-checked); although pinging to the local IP works. I was almost convinced that it was a network or hardware issue; until I asked someone to try installing Windows on that blade to verify that it was not working as well; however to my surprise it worked fine in Windows after installing the network driver; by just setting the IP address (which was the same IP I was trying to configure CentOS with). The interfaces come up fine (eth0 & eth1); the cards are: 03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708S Gigabit Ethernet (rev 12) 07:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708S Gigabit Ethernet (rev 12) NetworkManager is disabled. There is no bonding configured. The network firmware is the latest available from the HP website (bootcode 4.4.1, CLP 1.3.6). The network is supposed to be simple; if I do a: ifconfig eth0 172.12.34.112 netmask 255.255.255.0 I am supposed to be able to: ping 172.12.34.1 However, I get: PING 172.12.34.1 (172.12.34.1) 56(84) bytes of data. From 172.12.34.112 icmp_seq=2 Destination Host Unreachable From 172.12.34.112 icmp_seq=3 Destination Host Unreachable From 172.12.34.112 icmp_seq=4 Destination Host Unreachable From 172.12.34.112 icmp_seq=5 Destination Host Unreachable I cannot even ping blades in the same enclosure. Yet in windows server 2008 after putting the same IP pinging the same IPs works. I tried: - the disable_msi=1 parameter of the bnx2 driver - a fresh install of CentOS 6.3 - a fresh install of RHEL 6.2 - a live CD of CentOS 5.5 - Clonezilla-ubuntu and systemrescuecd (kernel 3.2) live CDs - CentOS 6.3 with the kernel(-headers,-firmware,-devel) updated to the latest (RPMs were copied with a USB/iLO) - the bnx2 network driver available from the HP website - the bnx2 network driver available from Broadcom Other than a check_ncic warning with the stock 6.3 driver (doesn't appear when trying other drivers); the bnx2 isn't logging anything problematic when I checked with dmesg or /var/log/messages. With tcpdump; strangely, I get random traffic destined to different IPs (probably from the same enclosure), but those IPs do not ping either. However, I got a feeling of deja vu in the midst of all this; as I recall setting up an RHEL machine somewhere else 2-3 years ago; and had the issue of the network working with Windows but not Linux; it turned out that it was because Autonegotiation was disabled with the gigabit network (the few attempts with playing with ethtool did not work); and searching online led me to people saying it ought to be enabled anyway as a standard requires it for gigabit. When the network guys enabled autoneg; it started working in Linux. I am wondering if I'm facing the same issue here, as I see ethtool saying: Advertised auto-negotiation: No Speed: 1000Mb/s I tried doing some ethtool settings (setting autoneg off and forcing 1000, other random options, etc) but it didn't help; but possibly I was trying the wrong things. I am not very familiar with HP blades; but it seems I cannot enable Autoneg for this blade (?); I do not have direct access to the hardware though (everything was done through iLO). Any of you faced issues with a gigabit network with Autoneg disabled? Or any other ideas? This is the only Linux machine in the entire network. Here are some extra info: > ethtool eth0: Settings for eth0: Supported ports: [ FIBRE ] Supported link modes: 1000baseT/Full 2500baseX/Full Supports auto-negotiation: Yes Advertised link modes: 1000baseT/Full 2500baseX/Full Advertised pause frame use: No Advertised auto-negotiation: No Speed: 1000Mb/s Duplex: Full Port: FIBRE PHYAD: 2 Transceiver: internal Auto-negotiation: on Supports Wake-on: g Wake-on: g Link detected: yes ----------------------- > modinfo bnx2: filename: /lib/modules/2.6.32-279.11.1.el6.x86_64/kernel/drivers/net/bnx2.ko ... version: 2.2.1 license: GPL description: Broadcom NetXtreme II BCM5706/5708/5709/5716 Driver ... vermagic: 2.6.32-279.11.1.el6.x86_64 SMP mod_unload modversions ... ----------------------- > route -n: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 172.12.34.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0 0.0.0.0 172.12.34.1 0.0.0.0 UG 0 0 0 eth0 --------------------- > ifconfig -a eth0 Link encap:Ethernet HWaddr 00:19:BB:34:FA:70 inet addr:172.12.34.112 Bcast:172.12.34.255 Mask:255.255.255.0 inet6 addr: fe80::219:bbff:fe34:fa70/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6800 errors:0 dropped:0 overruns:0 frame:0 TX packets:34 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4616962 (4.4 MiB) TX bytes:4827 (4.7 KiB) Interrupt:16 Memory:f6000000-f6012800 eth1 Link encap:Ethernet HWaddr 00:19:BB:34:FA:78 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:16 Memory:fa000000-fa012800 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 .... > traceroute 172.12.34.1: traceroute to 172.12.34.1 (172.12.34.1), 30 hops max, 60 byte packets 1 172.12.34.112 (172.12.34.112) 3000.686 ms !H 3000.673 ms !H 3000.661 ms !H .... > traceroute 172.12.34.112 traceroute to 172.12.34.112 (172.12.34.112), 30 hops max, 60 byte packets 1 172.12.34.112 (172.12.34.112) 0.041 ms 0.011 ms 0.009 ms -xrx

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Discuss October 2012