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Re: [CentOS] No route to host
by Les Bell 31 Jan '08

31 Jan '08

"horas simalango" <horasima(a)gmail.com> wrote: >> Please help me solve this problem! << The commands you'd use to diagnose this problem are: dig pttropical.co.id SOA (That works fine) dig pttropical.co.id MX (That works, and shows mail.pttropical.co.id as their MX) traceroute mail.pttropical.co.id (Which bombs out. Ergo their mail server or an upstream router or link is down). Best, --- Les Bell, RHCE, CISSP [http://www.lesbell.com.au] Tel: +61 2 9451 1144 FreeWorldDialup: 800909

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Network routes
by Jason Pyeron 31 Jan '08

31 Jan '08

I am unable to ping NE.TW.RKB.IP1 from an outside network. Other machines which do not have access or routes for NET.WOR.KA.0 respond just fine. How do I get it to respond on both NET.WOR.KA.0 and NE.TW.RKB.0 given all default traffic should go through NET.WOR.KA.1 unless it is in reply to traffic from NE.TW.RKB.1 or there is an outage. [root@host20 ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface NET.WOR.KA.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 NE.TW.RKB.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 0 0 0 eth1 0.0.0.0 NET.WOR.KA.1 0.0.0.0 UG 0 0 0 eth1 0.0.0.0 NE.TW.RKB.1 0.0.0.0 UG 20 0 0 eth0 [root@host20 ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:17:31:0F:04:AE inet addr:NE.TW.RKB.IP1 Bcast:NE.TW.RKB.255 Mask:255.255.255.0 eth0:pn Link encap:Ethernet HWaddr 00:17:31:0F:04:AE inet addr:192.168.1.20 Bcast:192.168.1.255 Mask:255.255.255.0 eth1 Link encap:Ethernet HWaddr 00:01:03:E9:42:D0 inet addr:NET.WOR.KA.IP2 Bcast:NET.WOR.KA.255 Mask:255.255.255.0 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 TIA -jason -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Sr. Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, purge the message from your system and notify the sender immediately. Any other use of the email by you is prohibited.

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No route to host
by horas simalango 31 Jan '08

31 Jan '08

Dear Mr/Mrs/Ms, I have e-mail server using Centos 4.3 So far I can send and receive e-mail using this server, but why to this address: retna(a)pttropical.co.id can not send? Every time I send e-mail to above address my server always respon with this massage: ----- Transcript of session follows ----- <retna(a)pttropical.co.id>... Deferred: mail.pttropical.co.id.: No route to host Warning: message still undelivered after 4 hours Will keep trying until message is 5 days old Please help me solve this problem! Previously Thank yuo for your help. Regards, Horasima SML.

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yum fails with invalid dependency on sqlite
by Yusuf Goolamabbas 30 Jan '08

30 Jan '08

Hi, I am using Centos 4.6 on x86-64. recently when I tried to do a yum -y check-update this is the output I get [root@amd64 ~]# yum check-update Setting up repositories update 100% |=========================| 951 B 00:00 base 100% |=========================| 1.1 kB 00:00 addons 100% |=========================| 951 B 00:00 Reading repository metadata in from local files primary.xml.gz 100% |=========================| 74 kB 00:01 (process:1999): GLib-CRITICAL **: file gtimer.c: line 106 (g_timer_stop): assertion `timer != NULL' failed (process:1999): GLib-CRITICAL **: file gtimer.c: line 88 (g_timer_destroy): assertion `timer != NULL' failed Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.main(sys.argv[1:]) File "/usr/share/yum-cli/yummain.py", line 97, in main result, resultmsgs = do() File "/usr/share/yum-cli/cli.py", line 534, in doCommands ypl = self.returnPkgLists() File "/usr/share/yum-cli/cli.py", line 1176, in returnPkgLists ypl = self.doPackageLists(pkgnarrow=pkgnarrow) File "__init__.py", line 904, in doPackageLists File "/usr/share/yum-cli/cli.py", line 75, in doRepoSetup self.doSackSetup(thisrepo=thisrepo) File "__init__.py", line 260, in doSackSetup File "repos.py", line 277, in populateSack File "/usr/lib64/python2.3/site-packages/sqlitecachec.py", line 40, in getPrimary self.repoid)) TypeError: Can not create index on requires table: near "NOT": syntax error This is the output of rpm -qa | grep sqlite [root@amd64 ~]# rpm -qa | grep sqlite python-sqlite-1.1.7-1.2.1 sqlite-3.3.6-2 sqlite-devel-3.3.6-2 any suggestions ?

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Re: [CentOS] centos 5.0/5.1 nfs kickstart
by Paul Armor 30 Jan '08

30 Jan '08

Hi, On Tue, 29 Jan 2008, Adam Miller wrote: > According to these docs an MTU can be specified in the kickstart script. It > doesn't say much more than that though. > > http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-kickstart2-op… > > The reason for nfs and an mtu of 4500 is complicated and not in my control. > This is being used in a beowulf cluster environment. > > The process I'm following is currently working for kickstarting Fedora Core 4 > installs, so I am hopeful it will work in centos. > > Adam Getting this thread back on track... The problem seems to be that when syslinux hands over control to the anaconda image, anaconda (specifically /sbin/loader) blows away the mtu... I'm guessing that it actually does set the mtu, then resets the interface (in our case, a broacom 5704 using tg3) and thus instantly forgets the mtu change. If in the syslinux kernel args I pass a static ip/netmask/mtu to the kernel, it works appropriately. Oddly, when starting the kickstart, after the ks.cfg file it will dhcp AND it seems remember the mtu setting. Thanks, Paul

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Apache: User and Group
by Niki Kovacs 30 Jan '08

30 Jan '08

Hi, I'm currently setting up a simple web server. So far, everything (PHP, MySQL) works very well, but I admit I never gave security that much thought. Time to change that habit. First things first. The RHEL Deployment Guide lists Apache's configuration directives alphabetically. Instead of going through them from A to Z, I'll try to start with what seems more important, and then advance step by step. User apache Group apache As far as I understand, I have to chown all my web content accordingly, so that everything below /var/www/html belongs to apache:apache. Right? cheers, Niki

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Dump on remote filesystems?
by Scott Ehrlich 30 Jan '08

30 Jan '08

I have a couple C5 systems I want to back up. My plan is to, one way or another, back them up to a C5 machine in my office. I have samba installed on the systems to back up, the machines are mounted on the system in my office, and a tape library hanging of the system in my office. I was hoping to perform a simple /sbin/dump of the remote systems. I put together a script for another successful backup I have going on a system with local filesystems. But for remote filesystems, I get errors of File Cannot Be Accessed (//remote_system/subdir) which does exist as an smb mounted filesystem. I'd use NFS, but I would like a bit more control and some level of encryption for the user authentication and data being transferred. If a direct dump of remote smb filesystems isn't possible, I may opt to have each system perform their own local dumps, then run a script locally on the tape-connected machine to dump those local dumps, or copy the dumps locally then dump them to tape. If nothing else works, I can always install Windows XP and use Windows backup program, but I'd really like to try and get this going under Linux before going that route. Thanks for insights. Scott

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Question on http stop responding
by Jerry Geis 30 Jan '08

30 Jan '08

I have a machine centos 5.1 fully up to patch that is on a network that has other machines that takes credit cards. In such an environment I have found that there is something called PCI - Payment Card Industry standards. They are scanning my machine to make sure it is OK to be on this network. One of the faults coming back is "Web server stops responding" to 3 consecutive HTTP attempts Is this a setting in http? Anyone familiar with this? Thanks, Jerry

2 1

snort question
by Alex 30 Jan '08

30 Jan '08

has anyone gotin snort 2.x working on centos 5.1 thanks in advance for your time

1 0

Resizing a fat filesystem on a USB partition
by Dogsbody 30 Jan '08

30 Jan '08

Hi All, I feel this is the most simple question but I am currently going around and round in circles and searches keep bringing me up Windows tools!! :-( I have a 512MB USB drive that has a 12MB FAT16 partition on it. How can I resize this 12MB partition to grow and fill the whole 512MB drive? Just in case I am being stupid, here is what I am doing... :-) I would like a quick USB drive that a machine can boot from but will then load and run some custom tools we have. I have done a... dd if=/mirrors/centos/5/os/i386/images/diskboot.img of=/dev/sda ... which gives the 12MB partition but now I want to grow it so I can then add my own apps. Thank you very much in advance Regards, Dan

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