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yum (still)
by Mário Gamito 12 Feb '07

12 Feb '07

Hi, Ok, i've set the proxy, the username and the password in yum.conf Restarted yum, and now i get: [root@localhost ~]# yum update Setting up Update Process Setting up repositories Cannot find a valid baseurl for repo: update Error: Cannot find a valid baseurl for repo: update I can resolve names (browse the web, etc.) Any help would be appreciated. Warm Regards, Mário Gamito

1 0

yum behinf authenticated proxy
by Mário Gamito 12 Feb '07

12 Feb '07

Hi, I've just installed a CentOS 4.4 and i'm behind a proxy with authentication. Does anyone know the parameters for the environment variable "http_proxy" so i can make a "yum update" ? Usually i'd do a $ export http_proxy="proxy.domaion.foo:3128" but this is not the case of an authenticated proxy. Any help would be appreciated. Warm Regards, Mário Gamito

3 4

playing with SO_BROADCAST on centos
by Jerry Geis 12 Feb '07

12 Feb '07

I have a small program that I am broadcasting out on port 36 and attempting to receive information back. Using "tcpdump port 36" I can see 2 devices responding to me but I get no data. The response my program gets is: Size IP Address Subnet MAC Address ID 20 0.0.0.0 0.0.0.0 00-00-00-00-00-00 Does someone know what I might not be doing correct? Running the same program under windows works, running it under wine on linux works it just doesnt work on linux. I have iptables disabled at this time. Thanks for nay suggestions. Jerry ---------------------------- tcpdump -x port 36 ------------------------- tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 08:42:49.286701 IP devcentos64.msgnet.com.36 > 255.255.255.255.36: UDP, length 20 0x0000: 4500 0030 0000 4000 4011 790b c0a8 010a E..0..@.@.y..... 0x0010: ffff ffff 0024 0024 001c ca61 4321 3039 .....$.$...aC!09 0x0020: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 08:42:49.286976 IP ecov132.msgnet.com.36 > devcentos64.msgnet.com.36: UDP, length 20 0x0000: 4500 0030 03c2 0000 8011 b2f2 c0a8 01ae E..0............ 0x0010: c0a8 010a 0024 0024 001c a0e2 4321 3039 .....$.$....C!09 0x0020: c0a8 01ae ffff 0000 0001 3cd0 67ff 0001 ..........<.g... 08:42:49.286990 IP ecov432_testing.msgnet.com.36 > devcentos64.msgnet.com.36: UDP, length 20 0x0000: 4500 0030 091a 0000 8011 ad8f c0a8 01b9 E..0............ 0x0010: c0a8 010a 0024 0024 001c b581 4321 3039 .....$.$....C!09 0x0020: c0a8 01b9 ffff ff00 0001 3cd0 5449 0001 ..........<.TI.. My program is: int main(int argc, char *argv[]) { int error; int total = 0; int socket_handle; enum { NMP_PORT = 36, NMP_MAGIC = 0x4321, NMP_LIST = 12345, NMP_SET_IP, NMP_SET_MASK }; typedef union { unsigned char b[4]; uint32_t v; } IPADDR; typedef struct { unsigned char b[6]; } MACADDR; typedef struct { unsigned short magic; unsigned short code; IPADDR ip; IPADDR mask; MACADDR mac; ushort Deviceid; } HD_NMP; HD_NMP nmp; struct sockaddr_in broadcast_address; bzero((char *) &broadcast_address, sizeof(broadcast_address)); broadcast_address.sin_family = AF_INET; broadcast_address.sin_port = htons(NMP_PORT); broadcast_address.sin_addr.s_addr = inet_addr("255.255.255.255"); socket_handle = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(socket_handle >= 0) { int byes = 1; fd_set read_set; struct timeval tm; if(setsockopt(socket_handle, SOL_SOCKET, SO_BROADCAST, &byes, sizeof(byes)) >= 0) { if(bind(socket_handle, (struct sockaddr *) &broadcast_address, sizeof(broadcast_address)) < 0) { printf("bind error\n"); } memset(&nmp, 0, sizeof(nmp)); nmp.magic = IWord(NMP_MAGIC); nmp.code = IWord(NMP_LIST); sendto(socket_handle, &nmp, sizeof(nmp), 0, (struct sockaddr *) &broadcast_address, sizeof(broadcast_address)); printf("%-4s %-15s %-15s %-17s %6s\n", "Size", "IP Address", "Subnet", "MAC Address", "ID"); while(1) { tm.tv_sec = 0; tm.tv_usec = 500000; FD_ZERO(&read_set); FD_SET(socket_handle, &read_set); error = select(socket_handle + 1, &read_set, NULL, NULL, &tm); if(error <= 0) { break; } else { char ip_str[100]; char mac_str[100]; char mask_str[100]; error = recvfrom(socket_handle, &nmp, sizeof(nmp), 0, NULL, 0); if(error < 0) { printf("errno=%d %s\n", errno, strerror(errno)); continue; } else if(nmp.code != IWord(NMP_LIST)) { printf("unknown return\n"); continue; } else { sprintf(ip_str, "%d.%d.%d.%d ", nmp.ip.b[0], nmp.ip.b[1], nmp.ip.b[2], nmp.ip.b[3]); sprintf(mask_str, "%d.%d.%d.%d ", nmp.mask.b[0], nmp.mask.b[1], nmp.mask.b[2], nmp.mask.b[3]); sprintf(mac_str, "%02X-%02X-%02X-%02X-%02X-%02X", nmp.mac.b[0], nmp.mac.b[1], nmp.mac.b[2], nmp.mac.b[3], nmp.mac.b[4], nmp.mac.b[5]); printf(" %2d %-15s %-15s %-15s\n", error, ip_str, mask_str, mac_str); total++; } } } } close(socket_handle); } return(0); }

2 1

RE: [CentOS] Server Tutorials but written in Spanish
by CentOS 12 Feb '07

12 Feb '07

Message: 36 Date: Tue, 6 Feb 2007 00:17:37 -0500 From: "Erick Perez" <eaperezh(a)gmail.com> Subject: [CentOS] Server Tutorials but written in Spanish To: "CentOS mailing list" <centos(a)centos.org> Message-ID: <d08ac7230702052117s218b0450q5882161466c9421d(a)mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed <snip> >I am looking for tutorials about: >How to setup postfix with centos, dovecot, creating rpm, apache,bind Erick: On the CentOS web site is a link to documentation. They have all of the RHEL manuals in English. I downloaded 6 of the 8 English language .pdf files. Suggest you go to the RH web site for RHEL manuals in Spanish. They have 4 of the RHEL manuals available in Spanish. <http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/es/> GL, Lanny near Cali, Colombia

2 1

SquidGuard
by Jun Salen 12 Feb '07

12 Feb '07

Hi list, Has anyone here use SquidGuard for their Squid proxy running in CentOS4.4 to block list of bad sites? Is the RPM available using yum? Any feedback using this software appreciated. Thank you very much. junji linux registered user #253162 Send instant messages to your online friends http://uk.messenger.yahoo.com

5 9

CentOS 4 Samba - Excel 2002/2003 bug
by Rodrigo Barbosa 12 Feb '07

12 Feb '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 There is a nasty bug on samba, up to 3.0.10, which causes Excel to incorrectly think a file was changes by someone else. This is a know issue, fixed on samba 3.0.11 (stock). A patch was also applied to samba on RHEL 3, but was NOT on RHEL 4. This patch (samba-3.0.9-excel.patch) will apply cleanly on samba-3.0.10-1.4E.9, and build without a glinch. This issue is NOT solves by http://support.microsoft.com/kb/324491 (has it on a machine with Office SP3 installed). Maybe we can get a centosplus version of samba with this patch applied ? []s - -- Rodrigo Barbosa "Quid quid Latine dictum sit, altum viditur" "Be excellent to each other ..." - Bill & Ted (Wyld Stallyns) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFFz7+rpdyWzQ5b5ckRAnX9AKCVm1x5fxyTdrjFa8kLzHLCft7tvACffTJa kpT1XyvlDjOdMoI12djA/h0= =6b5J -----END PGP SIGNATURE-----

2 2

xawtv lib issue.
by Doc Schneider 12 Feb '07

12 Feb '07

I'm trying to make xawtv work on my CentOS 4.4 i386 boxen. It fails with this error: This is xawtv-3.94, running on Linux/i686 (2.6.9-42.0.8.EL) load_codec_info_from_plugin: dlopen failed for /usr/lib/libquicktime/lqt_ffmpeg.so: /usr/lib/libquicktime/lqt_ffmpeg.so: undefined symbol: avcodec_init Segmentation fault I yum installed all the rpms it wanted but still no go. I know someone else was having this same issue and asked in the centos forums. Does anyone know how to resolve this? Thanks, -- -Doc

1 0

Centos 4.4 Samba passwd chat
by Neil Jolly 11 Feb '07

11 Feb '07

I' just setting up a samba server using centos and get you don't have permission to change you password on the windows xp client. Just wondered what others are using for the passwd chat line in smb.conf. Mine is: *New*password* %nn *Retype*new*password* %nn *passwd:*all*authentication*tokens*updated*successfully* Also tried setting passwd chat debug = Yes but that seems to have no effect in the log output. Thanks, Neil Jolly

2 2

CentOS 3 vs. CentOS 4 Memory Utilization
by hkclark＠gmail.com 11 Feb '07

11 Feb '07

I'm helping some folks who have a CentOS 3 i386 server with 512MB of RAM. The output of 'free' looks like: $ free total used free shared buffers cached Mem: 511428 497956 13472 0 29868 178280 -/+ buffers/cache: 289808 221620 Swap: 2040244 120644 1919600 The box does not even have X installed... it's basically a web application and email server. They would like to upgrade to CentOS 4, but are concerned that it could be considerably more "memory hungry" and lead to memory starvation (they don't want to add more RAM to the box at this time, although that could be an option down the road). I ran some tests under VMWare with fresh installations of CentOS 3 and CentOS 4 (both using a "minimal install", the same as the server in question) and CentOS 4 seemed to only use 10-25MB more memory. However, it's hard to know how this will translate into real-world performance over time and with the application installed. Does anyone have any experience that would suggest how much more memory a non-X server like this might require? If the application(s) on the server stay the same, do you think we would run into issues where memory would be depleted to a level that would cause concern? Many thanks, KC

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asrock 775 dual-vsta mb and linux with sata raid
by Sam Giraffe 11 Feb '07

11 Feb '07

Hello, I have the subject mentioned mb and I am trying to install centos 4.4 with sata raid enabled, but linux is not seeing the drives? I tried to load via sata raid driver, no luck there. I guess I could try legacy mode in the bios, but I was hoping there is another way around to load linux with the raid? Thanks....

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