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Regd: Iptables SNAT issue in Cluster Suite Setup
by Balaji 27 Dec '07

27 Dec '07

Dear All, I have configured Cluster Suite with 2 servers Server 1 : 192.168.13.110 IP Address Server 2 : 192.168.13.179 IP Address Floating : 192.168.13.83 IP Address (Assumed by currently active server) I want all snmp packets going out through the active server to be stamped with floating IP So i have added a iptables rules as "iptables -t nat -A POSTROUTING -p udp -s 192.168.13.179 --dport 161 -j SNAT --to-source 192.168.13.83:161 iptables -t nat -A POSTROUTING -p udp -s 192.168.13.110 --dport 161 -j SNAT --to-source 192.168.13.83:161" I have written a script to continuously poll an agent using snmpgetnext. This script works for some time and then snmpgetnext fails giving the following message "Fri Dec 21 19:10:20 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:10:20 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:10:20 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:10:20 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:10:21 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:10:21 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:10:21 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:10:21 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:10:21 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:13:20 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:13:20 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:13:21 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:13:21 IST 2007 snmpgetnext: Failure in sendto (Operation not permitted) Fri Dec 21 19:13:21 IST 2007 Fri Dec 21 19:13:21 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:13:21 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:13:21 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:13:21 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" Fri Dec 21 19:13:21 IST 2007 SNMPv2-SMI::enterprises.3769.1.2.3.1.0 = "" " If i remove the above iptables rule it works continuously and if i restarted iptables (with rule) then it works for some time and before the same problem repeats Can some one throw light on this particular problem Regards S.Balaji P.S: Same thing happen when a rule for rsync, ssh and telnet i.e they works some time and some times does not e.g rsync,ssh and telnet iptables SNAT rule "iptables -t nat -A POSTROUTING -p tcp -s 192.168.13.179 --dport 873 -j SNAT --to-source 192.168.13.83:873 iptables -t nat -A POSTROUTING -p tcp -s 192.168.13.179 --dport 22 -j SNAT --to-source 192.168.13.83:22 iptables -t nat -A POSTROUTING -p tcp -s 192.168.13.179 --dport 23 -j SNAT --to-source 192.168.13.83:23" rsync Success message is "receiving file list ... done Log/ Log/20070619.dbg.zip Log/20070619.log.zip Log/20070620.dbg.zip Log/20070620.log.zip Log/20070621.dbg.zip Log/20070621.log.zip sent 190 bytes received 211940 bytes 84852.00 bytes/sec total size is 211421 speedup is 1.00" rsync Failure message is "rsync: failed to connect to 192.168.13.100: Connection timed out (110) rsync error: error in socket IO (code 10) at clientserver.c(94) " *ssh Failure *Message is "ssh: connect to host 192.168.13.100 port 22: Connection timed out" telnet Failure Message is "telnet: connect to address 192.168.13.100: Connection timed out"

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Net install from behind webproxy
by McGlue, Ronan 27 Dec '07

27 Dec '07

I am behind a webproxy and am wondering if I can pass the webproxy's details to the boot time kernel so that I can install centos 5.1 from the net boot CD I have downloaded!? Thanks Ronan Australia Post is committed to providing our customers with excellent service. If we can assist you in any way please telephone 13 13 18 or visit our website. The information contained in this e-mail communication may be proprietary, confidential or legally professionally privileged. It is intended exclusively for the individual or entity to which it is addressed. You should only read, disclose, re-transmit, copy, distribute, act in reliance on or commercialise the information if you are authorised to do so. Australia Post does not represent, warrant or guarantee the integrity of this e-mail communication has been maintained nor that the communication is free of errors, virus or interference. If you are not the addressee or intended recipient please notify us by replying direct to the sender and then destroy any electronic or paper copy of this message. Any views expressed in this e-mail communication are taken to be those of the individual sender, except where the sender specifically attributes those views to Australia Post and is authorised to do so.

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Re: [CentOS] Natulius CD burner does not accept my 700Mb CD-R disks
by Robert Moskowitz 27 Dec '07

27 Dec '07

Frank Cox wrote: > On Tue, 25 Dec 2007 17:37:32 -0500 > Robert Moskowitz <rgm(a)htt-consult.com> wrote: > > >> Sense Key: 0x2 Not Ready, Segment 0 >> > > Get some canned air and blow the dirt off of the sensor in the drive. No change. The drive is the coffee mug tray style. so even opening the plastic housing for the drive does not let me 'see' the sensor, but I used a lot of canned air and no change in behaviour.... Perhaps I have to go out to the drug store and buy one of those drive lens cleaner disks?

5 29

centos 5.1 vnc server
by Jerry Geis 27 Dec '07

27 Dec '07

Any one using vnc server on centos 5.1? on 4.6 I had no issue. on 5.1 I am having times when on connetion the VNC serveris crashing and logs me out of all my open'ed items. I can relog in. But I was wondering if others are seeing this and if there is something to do about it. THanks, Jerry

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Channel Bonding issue in Cluster Suite Setup
by Balaji 27 Dec '07

27 Dec '07

Dear All, I have configured RHEL Cluster Suite with 2 servers Server 1 : 192.168.13.110 IP Address and hostname is primary Server 2 : 192.168.13.179 IP Address and hostname is secondary Floating : 192.168.13.83 IP Address (Assumed by currently active server) In am followed the RHEL Cluster Suite Configuration document "rh-cs-en-4.pdf" and I have configured Ethernet Channel Bonding in Each Cluster Nodes Channel Bonding Configuration Details are 1) Created bonding devices in "/etc/modprobe.conf" file alias bond0 bonding options bonding miimon=100 mode=1 2) Edit the "/etc/sysconfig/network-scripts/ifcfg-eth0 and ifcfg-eth1" configuration DEVICE=eth0 USERCTL= no ONBOOT=yes MASTER=bond0 SLAVE=yes BOOTPROTO=none DEVICE=eth1 USERCTL= no ONBOOT=yes MASTER=bond0 SLAVE=yes BOOTPROTO=none 3) Created a network script for the bonding device is "/etc/sysconfig/network-scripts/ifcfg-bond0" DEVICE=bond0 USERCTL=no ONBOOT=yes NETMASK=255.255.255.0 GATEWAY=192.168.13.1 IPADDR=192.168.13.110 4) Reboot the system for the changes to take effect. After i am rebooted both the server then cluster node becomes simplex and Services are started on both the nodes The cluster output in primary node Member Status: Quorate Member Name Status ----------- ------- --------- primary Online, Local, rgmanager secondary Offline Service Name Owner (Last) State --------- -------- ----------------- -------- Service primary started The cluster output in secondary node Member Status: Quorate Member Name Status ----------- ------- --------- primary Offline secondary Online, Local, rgmanager Service Name Owner (Last) State --------- -------- ----------------- -------- Service secondary started Before Ethernet Channel Bonding cluster services are active in one node and other nodes acts as passive node and member status is Online for both the nodes But after Ethernet Channel Bonding cluster services are active on both the nodes and member status is current node is Online and other node is Offline We are not sure why this is happening. Can some one throw light on this. Regards -S.Balaji

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Re: [CentOS] centos 5.1 vnc server
by Frank Cox 27 Dec '07

27 Dec '07

On Wed, 26 Dec 2007 19:23:33 -0500 Jerry Geis <geisj(a)MessageNetSystems.com> wrote: > The only other item is I am using the NVIDIA binary driver are you? Nope. I actively avoid anything other than Intel video. Perhaps that will change after the ATI open-source thing has a change to develop a bit, but at the moment I stay with Intel stuff. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

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BitTorrent
by centos＠911networks.com 26 Dec '07

26 Dec '07

Any suggestion for a 'good' bittorrent client with Centos5.1? -- Thanks

2 1

Natulius CD burner does not accept my 700Mb CD-R disks
by Robert Moskowitz 26 Dec '07

26 Dec '07

When I try to burn anything to cd, I get a message to insert a CD large enough for my file (normally an ISO image). Doesn't matter if the iso image is a 600Mb Centos ISO or a 48Mb DSL ISO. Same warning. My CD-Rs are Memorex 700MB/80min 52x disks that work just fine on XP systems. So what am I missing configuration-wise?

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Re: [CentOS] Natulius CD burner does not accept my 700Mb CD-R disks
by Robert Moskowitz 26 Dec '07

26 Dec '07

Definetly trouble right here in River City... Joe Pruett wrote: > so you can read burned disks ok on the drive under linux? > I shut down the server, unplugged the CDRW, rebooted, set up a tail -f /var/log/messages then plugged in the CDRW and got: Dec 26 12:43:09 onlo kernel: usb 1-2: new full speed USB device using uhci_hcd and address 2 Dec 26 12:43:10 onlo kernel: usb 1-2: configuration #1 chosen from 1 choice Dec 26 12:43:10 onlo kernel: Initializing USB Mass Storage driver... Dec 26 12:43:14 onlo kernel: scsi0 : SCSI emulation for USB Mass Storage devices Dec 26 12:43:14 onlo kernel: usbcore: registered new driver usb-storage Dec 26 12:43:14 onlo kernel: USB Mass Storage support registered. Dec 26 12:43:19 onlo kernel: Vendor: HP Model: CD-Writer+ 8200f Rev: 1.0A Dec 26 12:43:19 onlo kernel: Type: CD-ROM ANSI SCSI revision: 00 Dec 26 12:43:19 onlo kernel: scsi 0:0:0:0: Attached scsi generic sg0 type 5 Dec 26 12:43:19 onlo kernel: sr0: scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray Then I put in a of pics and movies of my daugther's graduation and the light on the drive flashes green then red. Nothing. I move the cd (oh and this is one taken from my disk supply last summer) and put it into the IDE cdrom reader and that little icon came up on the top system tray in Gnome telling me that I might want to mount the cdrom by left clicking on the icon. Once mounted, I get a CD icon on the desktop and this lets me open nautilus to the CD. And nothing like this happened with the external CDRW drive. Opening a terminal window and issuing mount, I see the /dev/hdc is on /media/060622_2133 type iso9660 Now lets test all this on the external again... so I insert the CD and again the light is flashing red. mkdir /media/cdrw mount -t iso9660 /dev/scd0 /media/cdrw and get the response: mount: No medium found I am going to dig out my portable CDRW from my notebook backpack (for my real work notebook that I am typing from now, not my 'corp' notebook!).

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Regd: Ethernet Channel Bonding issue in Cluster
by Balaji 26 Dec '07

26 Dec '07

Dear All, I have configured Cluster Suite with 2 servers Server 1 : 192.168.13.110 IP Address and hostname is primary Server 2 : 192.168.13.179 IP Address and hostname is secondary Floating : 192.168.13.83 IP Address (Assumed by currently active server) I have configured Ethernet Channel Bonding in Each Cluster Nodes and Channel Bonding Configuration Details are 1) Created bonding devices in "/etc/modprobe.conf" file alias bond0 bonding options bonding miimon=100 mode=1 2) Edit the "/etc/sysconfig/network-scripts/ifcfg-eth0 and ifcfg-eth1" configuration DEVICE=eth0 USERCTL= no ONBOOT=yes MASTER=bond0 SLAVE=yes BOOTPROTO=none DEVICE=eth1 USERCTL= no ONBOOT=yes MASTER=bond0 SLAVE=yes BOOTPROTO=none 3) Created a network script for the bonding device is "/etc/sysconfig/network-scripts/ifcfg-bond0" DEVICE=bond0 USERCTL=no ONBOOT=yes NETMASK=255.255.255.0 GATEWAY=192.168.13.1 IPADDR=192.168.13.110 4) Reboot the system for the changes to take effect. After i am rebooted both the server then cluster node becomes simplex and Services are started on both the nodes The cluster ouput in primary node Member Status: Quorate Member Name Status ----------- ------- --------- primary Online, Local, rgmanager secondary Offline Service Name Owner (Last) State --------- -------- ----------------- -------- Service primary started The cluster ouput in secondary node Member Status: Quorate Member Name Status ----------- ------- --------- primary Offline secondary Online, Local, rgmanager Service Name Owner (Last) State --------- -------- ----------------- -------- Service secondary started Before Ethernet Channel Bonding cluster services are active in one node and other nodes acts as passive node. But after Ethernet Channel Bonding cluster services are active on both the nodes I need to solve the following issue and services are run only active node. Can some one throw light on this peculiar problem Regards -S.Balaji

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