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RIPd not announcing routes (CentOS 5.4)
by Timo Schoeler 03 Dec '09

03 Dec '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi list, yesterday I sent this eMail to quagga mailing list, however I didn't receive an answer yet. Unfortunately, I really need this stuff running or have to switch to another strategy achieving the goals. Maybe one of you has some experience on this topic and can shed some light on it -- I really appreciate it. - -----8<-----8<-----8<----- I have a setup here that requires me to announce dynamic route that are created (within some virtual machines) on my CentOS-based machine. Config looks like this: (ripd.conf) ! hostname bla.foo.org password something enable password somethingother log file /var/log/quagga/ripd.log debug rip events ! router rip ~ version 2 ~ redistribute kernel ~ passive-interface default ~ network eth1.123 ~ network eth1.124 ! ~ no passive-interface eth1.123 ~ no passive-interface eth1.124 ! line vty ! Now, the problem is that it seems to distribute its routes (as my Cisco network guy told me), but it does not learn the routes announced by the (Cisco) neighbours: The speaks to a bunch of Cisco routers (which do, among OSPF and BGP routing, redistriubution of lots of stuff via RIPv2, which should feed my machines). The logfile (as configured above in the config) seems okay (except a "RIP: update timer fire!" entry every now and then): 2009/11/30 10:16:47 RIP: RIPd 0.98.6 starting: vty@2602 2009/11/30 10:16:47 RIP: turn on eth1.123 2009/11/30 10:16:47 RIP: Redistribute new prefix x.x.x.x/14 on the interface eth1.123 2009/11/30 10:16:47 RIP: triggered update! 2009/11/30 10:16:47 RIP: turn on eth1.124 2009/11/30 10:16:47 RIP: Redistribute new prefix y.y.y.y/16 on the interface eth1.124 2009/11/30 10:16:48 RIP: multicast join at eth1.123 2009/11/30 10:16:48 RIP: multicast request on eth1.123 2009/11/30 10:16:48 RIP: SEND to 224.0.0.9.520 2009/11/30 10:16:48 RIP: multicast join at eth1.124 2009/11/30 10:16:48 RIP: multicast request on eth1.124 2009/11/30 10:16:48 RIP: SEND to 224.0.0.9.520 2009/11/30 10:16:48 RIP: RECV packet from z.z.z.1 port 520 on eth1.123 2009/11/30 10:16:48 RIP: RECV packet from z.z.z.2 port 520 on eth1.123 2009/11/30 10:16:48 RIP: RECV packet from z.0.0.3 port 520 on eth1.123 2009/11/30 10:16:48 RIP: RECV packet from z.z.z.121 port 520 on eth1.124 2009/11/30 10:16:48 RIP: RECV packet from z.z.z.122 port 520 on eth1.124 2009/11/30 10:16:48 RIP: RECV packet from z.z.z.123 port 520 on eth1.124 ... A 'sh ip rip status' shows me following: QUAGGA# sh ip rip status Routing Protocol is "rip" ~ Sending updates every 30 seconds with +/-50%, next due in 28 seconds ~ Timeout after 180 seconds, garbage collect after 120 seconds ~ Outgoing update filter list for all interface is not set ~ Incoming update filter list for all interface is not set ~ Default redistribution metric is 1 ~ Redistributing: kernel ~ Default version control: send version 2, receive version 2 ~ Interface Send Recv Key-chain ~ eth1.123 2 2 ~ eth1.124 2 2 ~ Routing for Networks: ~ eth1.123 ~ eth1.124 ~ Routing Information Sources: ~ Gateway BadPackets BadRoutes Distance Last Update ~ z.z.z.1 60 0 120 00:00:16 ~ z.z.z.3 60 0 120 00:00:22 ~ z.z.z.2 60 0 120 00:00:25 ~ z.z.z.6 67 0 120 00:00:05 ~ z.z.z.5 69 0 120 00:00:28 ~ z.z.z.121 68 0 120 00:00:22 ~ z.z.z.123 68 0 120 00:00:16 ~ z.z.z.122 69 0 120 00:00:10 ~ z.z.z.7 61 0 120 00:00:11 ~ z.z.z.6 4423 0 120 00:00:27 ~ z.z.z.5 5556 0 120 00:00:00 ~ z.z.z.7 3460 0 120 00:00:09 ~ Distance: (default is 120) So, I got a *lot* of BadPackets. tcpdump shows nothing 'weird', so I don't see the problem. Maybe this is something trivial but I don't see it as I'm new to quagga. Help greatly appreciated. Best regards, Timo -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFLFO+ifg746kcGBOwRAsvOAJ9jSJ2vJ6Ir02N7DB1tWHgsPR6LCQCgnT1O j1B+IbniBypTttFLcwmCHlk= =ZuLM -----END PGP SIGNATURE-----

2 2

Latency Monitor
by Matt 02 Dec '09

02 Dec '09

Does anyone know of a utillity I can run on a server to periodically ping several hosts and record the result? Does not need to be anything fancy at all. Matt

5 4

(re)load new kernel with rebooting host node?
by Rudi Ahlers 02 Dec '09

02 Dec '09

Hi all, Is it possible to reload the dom0 / host node's kernel with a newer one, without rebooting the server? I know kexec can do something like this for security patches, but I don't know much about kexec, and I don't want to mess up a production server either. So, has anyone done something like this before? I need to load a new kernel for one of the domU's iptables to work, but don't want to reboot the whole server and cause downtime for the other domU's. -- Kind Regards Rudi Ahlers CEO, SoftDux Hosting Web: http://www.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

4 3

CentOS 5.3 - changing display settings
by Andrew 02 Dec '09

02 Dec '09

I've just installed CentOS 5.3 on my desktop and need to change the installed display setting from 1280x1024 to 1024x768 (more suitable for my monitor). When I try this on the Display Settings tab, I get the message: "Display settings changed You need to log out and restart the X server for the changes to take effect. Configuration was written to /etc/X11/xorg.conf, original configuration saved as /etc/X11/xorg.conf.backup." Trouble is, I don't know how to restart the X server apart from rebooting the computer, but that has no effect and the display settings remain unchanged! Any help appreciated, Andy

4 4

Small proxy appliance hardware
by Chuck Munro 02 Dec '09

02 Dec '09

I need to configure a small proxy appliance which doesn't require a lot of CPU power. I'm looking for any warnings this group may have regarding CentOS-5 on the following: - Acer AspireRevo 3610 (Atom CPU) - Dell Inspiron 537s (Celeron) - Any other small machines you might recommend (UL approved) I need to implement dual NICs, and for the Dell it should be no problem finding a low-profile 3Com or Intel adapter, but for the Acer I'll need to use one of those USB wired network dongle things. Does anyone have recommendations for a USB dongle that is fully automatic (regarding speed and duplex negotiation) supported by CentOS? Gigabit speed is not required. Any other compatibility issues with the above machines? Normally I'd simply build something from components and squeeze it into a small box, but in this case I need something with UL/CSA/CE approvals, which lets out homebrew hardware. Many thanks in advance!

4 5

Errors in core dump apache
by Matias Sardisco 02 Dec '09

02 Dec '09

Hi. I saw that some instances of apache die in a segmentation fault. I found this errors in core dump of apache. #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- #0 0x00002b181603e3a9 in ?? () from /etc/httpd/modules/libphp5.so ------------------------- #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- #0 0x00002b180e623820 in crc32 () from /usr/lib64/libz.so.1 ------------------------- We run this software: CentOS 5.4 php 5.2.9 (test repository) httpd 2.2.3 zlib 1.2.3-3 Some ideas? Thank! ------------------------- Matias Sardisco e-mail: msardisco(a)mancia.org

1 0

Tomcat authentication via PAM (or other system methods)?
by Les Mikesell 02 Dec '09

02 Dec '09

Is there a way to coax java services running under tomcat to use the system authentication methods set up through PAM? In my case, this would be users in the local passwd file or through smb to a windows domain. I've added mod_auth_pam to get this effect with apache but would like to also handle java web services. -- Les Mikesell lesmikesell(a)gmail.com

3 2

(HOWTO) Crypto root with the LUKS key on a USB stick
by Devin Reade 02 Dec '09

02 Dec '09

I've written up a document on how to have whole-disk encryption (minus /boot) while having your LUKS key on a USB stick. (Whether or not this is a good idea depends on your usage model, and I won't get into that). The document is at <http://www.gno.org/~gdr/sysadmin/centos/5.4/usb-crypto-key.html> and is targetted at CentOS 5.4. It supersedes my howto for crypto root (for interactive boot or USB sticks) for CentOS 5.1 - 5.3 (the old links are on that page). If anyone has feedback on it, feel free to contact me privately. Devin -- Anyone who cannot cope with mathematics is not fully human. At best he is a tolerable subhuman who has learned to wear shoes, bathe, and not make messes in the house. - Robert Heinlein

1 0

Autofs cannot bind LDAP server
by Eric B. 02 Dec '09

02 Dec '09

Hi, I'm using Autofs and LDAP for mounting my home directories via nfs. In general, everything seems to work fine. However, I have one small problem. If I reboot my server using autofs while my LDAP server is down, I get the following error message in my logs: automount[3358]: bind_ldap_anonymous: lookup(ldap): Unable to bind to the LDAP server: (default), error Can't contact LDAP server which is understandable, since my ldap server is temporarily down. My problem, however, is that once my ldap server is back up, autofs never seems to retry to connect to it, so all my /home mounts fail. Basically, it means I have to make sure that my LDAP server is never down while another server is rebooting. I figure there must be something in the configuration file that would allow me to tweak this to indicate to autofs to recheck the ldap server periodically to see if it has come back up, but can't seem to find anything. My /etc/sysconfic/autofs file is pretty plain: # TIMEOUT - set the default mount timeout (default 600). # TIMEOUT=300 # LOGGING - set default log level "none", "verbose" or "debug" # LOGGING="verbose" # Other common LDAP nameing # MAP_OBJECT_CLASS="automountMap" ENTRY_OBJECT_CLASS="automount" MAP_ATTRIBUTE="ou" ENTRY_ATTRIBUTE="cn" VALUE_ATTRIBUTE="automountInformation" Is there anything I can do to force autofs to check to see if my LDAP server is back online? Thanks, Eric

5 8

Samsung M800
by Frank Cox 02 Dec '09

02 Dec '09

I have a Samsung M800 phone that I had (wrongly) assumed would show up as a USB drive on Linux so I can transfer files to it and so on. Instead, it appears to present itself as a modem. Is there any way to make it appear as a usb drive? Dec 1 13:47:17 mutt kernel: usb 5-1: new full speed USB device using uhci_hcd and address 3 Dec 1 13:47:17 mutt kernel: usb 5-1: configuration #1 chosen from 1 choice Dec 1 13:47:18 mutt kernel: cdc_acm 5-1:1.0: ttyACM0: USB ACM device Dec 1 13:47:18 mutt kernel: usbcore: registered new driver cdc_acm Dec 1 13:47:18 mutt kernel: drivers/usb/class/cdc-acm.c: v0.25:USB Abstract Control Model driver for USB modems and ISDN adapters Dec 1 13:47:37 mutt kernel: usb 5-1: USB disconnect, address 3 Dec 1 13:47:38 mutt kernel: usb 5-1: new full speed USB device using uhci_hcd and address 4 Dec 1 13:47:38 mutt kernel: usb 5-1: configuration #1 chosen from 1 choice Dec 1 13:47:38 mutt kernel: scsi9 : SCSI emulation for USB Mass Storage devices Dec 1 13:47:43 mutt kernel: usb 5-1: USB disconnect, address 4 Dec 1 13:47:44 mutt kernel: usb 5-1: new full speed USB device using uhci_hcd and address 5 Dec 1 13:47:45 mutt kernel: usb 5-1: configuration #1 chosen from 1 choice Dec 1 13:47:45 mutt kernel: cdc_acm 5-1:1.0: ttyACM0: USB ACM device Dec 1 13:51:13 mutt kernel: usb 5-1: USB disconnect, address 5 nd address 6 Dec 1 13:51:16 mutt kernel: usb 5-1: configuration #1 chosen from 1 choice Dec 1 13:51:16 mutt kernel: cdc_acm 5-1:1.0: ttyACM0: USB ACM device -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

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