Discuss November 2011

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208 participants
155 discussions

CentOS 6 yum Groupinstall vs Manual install
by Jonathan Vomacka 08 Nov '11

08 Nov '11

Gentlemen, I have a question regarding yum groupinstall vs just using yum install. I have been reading tutorials online (for example how to run a Centos LAMP). Most of the tutorials have examples to install httpd, mysql, etc using yum install httpd.... The reason for this e-mail is that I noticed in yum grouplist that there is an option to install Web Server, MySQL database server, etc. Question: Is there any advantage to using yum groupinstall for a webserver as opposed to using yum install httpd? I am just curious why most online docs dont mention groupinstall and only reference installing each app manually one by one. Any information would be appreciated

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CentOS-announce Digest, Vol 81, Issue 5
by centos-announce-request＠centos.org 08 Nov '11

08 Nov '11

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SELinux and SETroubleshootd woes in CR
by Trey Dockendorf 07 Nov '11

07 Nov '11

I'm setting up a dedicated database server, and since this will be a central service to my various web servers I wanted it to be as secure as possible...so I am leaving SELinux enabled. However I'm having trouble getting Apache to use mod_auth_pam. I also now can't get setroubleshootd working to send me notifications of the denials and provide tips to solve the problem. The Apache service has this directive on the default vhost, ------------------- <Directory "/usr/share/phpMyAdmin"> AuthPAM_Enabled on AllowOverride None AuthName "HTTP Auth" AuthType basic require valid-user </Directory> When I attempt to authenticate I noticed this in /var/log/secure -------------------- Nov 1 15:06:58 host httpd: PAM audit_open() failed: Permission denied This is the entry from the audit log... ---------------- type=AVC msg=audit(1320178016.209:919): avc: denied { create } for pid=22689 comm="unix_chkpwd" scontext=unconfined_u:system_r:httpd_t:s0 tcontext=unconfined_u:system_r:httpd_t:s0 tclass=netlink_audit_socket type=SYSCALL msg=audit(1320178016.209:919): arch=c000003e syscall=41 success=no exit=-13 a0=10 a1=3 a2=9 a3=7fff23386470 items=0 ppid=20102 pid=22689 auid=500 uid=48 gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48 fsgid=48 tty=(none) ses=107 comm="unix_chkpwd" exe="/sbin/unix_chkpwd" subj=unconfined_u:system_r:httpd_t:s0 key=(null) type=AVC msg=audit(1320178018.386:920): avc: denied { create } for pid=20102 comm="httpd" scontext=unconfined_u:system_r:httpd_t:s0 tcontext=unconfined_u:system_r:httpd_t:s0 tclass=netlink_audit_socket type=SYSCALL msg=audit(1320178018.386:920): arch=c000003e syscall=41 success=no exit=-13 a0=10 a1=3 a2=9 a3=0 items=0 ppid=20099 pid=20102 auid=500 uid=48 gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48 fsgid=48 tty=(none) ses=107 comm="httpd" exe="/usr/sbin/httpd" subj=unconfined_u:system_r:httpd_t:s0 key=(null) As for setroubleshoot, I have a duplicate install working just fine on another server, or at least it was working. I'm worried updating to CR may have broken setroubleshootd. Mainly I'd like to know how to troubleshoot that application. Messagebus is running. Running setroubleshootd yields these results... ------------------- # setroubleshootd -f -V 2011-11-01 15:11:53,919 [database.DEBUG] created new database: name=audit_listener, friendly_name=Audit Listener, filepath=/var/lib/setroubleshoot/audit_listener_database.xml 2011-11-01 15:11:53,920 [database.DEBUG] database version 3.0 compatible with current 3.0 version 2011-11-01 15:11:53,923 [plugin.DEBUG] load_plugins() names=['httpd_bad_labels', 'allow_saslauthd_read_shadow', 'tftpd_write_content', 'allow_nfsd_anon_write', 'vbetool', 'allow_ypbind', 'httpd_use_cifs', 'file', 'allow_execheap', 'nfs_export_all_rw', 'allow_java_execstack', 'allow_httpd_sys_script_anon_write', 'samba_share', 'filesystem_associate', 'fcron_crond', 'inetd_bind_ports', 'named_write_master_zones', 'qemu_file_image', 'catchall', 'allow_mplayer_execstack', 'httpd_can_sendmail', 'httpd_enable_homedirs', 'wine', 'xen_image', 'secure_mode_policyload', 'allow_execmod', 'disable_ipv6', 'httpd_can_network_connect_db', 'sys_module', 'bind_ports', 'samba_export_all_rw', 'use_samba_home_dirs', 'rsync_data', 'allow_kerberos', 'httpd_ssi_exec', 'mmap_zero', 'global_ssp', 'allow_rsync_anon_write', 'cvs_data', 'allow_ftpd_anon_write', 'device', 'catchall_boolean', 'automount_exec_config', 'leaks', 'setenforce', 'ftpd_is_daemon', 'allow_zebra_write_config', 'firefox', 'nfs_export_all_ro', 'httpd_enable_cgi', 'httpd_tty_comm', 'public_content', 'ftp_home_dir', 'prelink_mislabled', 'allow_execstack', 'spamd_enable_home_dirs', 'sshd_root', 'samba_share_nfs', 'httpd_builtin_scripting', 'allow_ftpd_full_access', 'default', 'allow_ftpd_use_nfs', 'samba_enable_home_dirs', 'restorecon', 'selinuxpolicy', 'pppd_can_insmod', 'allow_daemons_dump_core', 'httpd_write_content', 'allow_httpd_anon_write', 'secure_mode_insmod', 'kernel_modules', 'samba_export_all_ro', 'httpd_enable_ftp_server', 'allow_postfix_local_write_mail_spool', 'execute', 'privoxy_connect_any', 'use_nfs_home_dirs', 'allow_smbd_anon_write', 'sys_resource', 'allow_ftpd_use_cifs', 'connect_ports', 'swapfile', 'httpd_use_nfs', 'httpd_can_network_relay', 'allow_cvs_read_shadow', 'squid_connect_any', 'mounton', 'qemu_blk_image', 'user_tcp_server', 'restore_source_context'] 2011-11-01 15:11:53,923 [plugin.INFO] importing /usr/share/setroubleshoot/plugins/__init__ as plugins 2011-11-01 15:11:55,114 [avc.DEBUG] Number of Plugins = 90 2011-11-01 15:11:55,116 [communication.DEBUG] parse_socket_address_list: input='{unix}/var/run/setroubleshoot/setroubleshoot_server' 2011-11-01 15:11:55,117 [communication.DEBUG] parse_socket_address_list: {unix}/var/run/setroubleshoot/setroubleshoot_server --> {unix}/var/run/setroubleshoot/setroubleshoot_server socket=None 2011-11-01 15:11:55,118 [communication.DEBUG] new_listening_socket: {unix}/var/run/setroubleshoot/setroubleshoot_server socket=None 2011-11-01 15:11:55,118 [server.INFO] creating system dbus: bus_name=org.fedoraproject.Setroubleshootd object_path=/org/fedoraproject/Setroubleshootd interface=org.fedoraproject.SetroubleshootdIface 2011-11-01 15:11:55,119 [server.DEBUG] dbus __init__ /org/fedoraproject/Setroubleshootd called 2011-11-01 15:12:05,119 [server.DEBUG] received signal=14 2011-11-01 15:12:05,119 [server.DEBUG] KeyboardInterrupt in RunFaultServer 2011-11-01 15:12:05,119 [database.DEBUG] writing database (/var/lib/setroubleshoot/audit_listener_database.xml) modified_count=0 ------------------------ I've found this resource, http://docs.fedoraproject.org/en-US/Fedora/13/html/SELinux_FAQ/index.html#i…, but have no idea how to make that change or where that modification would go. Please let me know what other information would be useful. Thanks - Trey

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Monitoring IO -- vmstat doesn't match snmp
by David Dyer-Bennet 07 Nov '11

07 Nov '11

I made the mistake of looking at disk IO numbers in two different ways -- now I'm confused, because they give inconsistent answers. First way was using 'vmstat 10'. This gave me (apologies for wrapped lines): r b swpd free buff cache si so bi bo in cs us sy id wa st 2 0 2162944 4071928 162444 4218456 0 0 0 286 1103 528 3 2 95 0 0 1 0 2162944 4071976 162448 4218440 0 0 0 301 1102 548 2 4 95 0 0 2 0 2162944 4074488 162456 4218448 0 0 0 252 1097 501 1 4 96 0 0 2 0 2162944 4081572 162480 4218508 0 0 0 430 1145 1006 2 3 95 0 0 2 0 2162944 4079340 162488 4218508 0 0 0 354 1148 604 2 3 95 0 0 1 0 2162944 4082604 162492 4218512 0 0 0 258 1105 446 1 4 96 0 0 1 0 2162944 4084052 162500 4218520 0 0 0 300 1101 482 1 4 95 0 0 1 0 2162944 4080652 162500 4218536 0 0 0 393 1118 585 1 3 95 0 0 1 0 2162944 4081160 162500 4218536 0 0 0 304 1100 462 0 4 95 0 0 1 0 2162944 4075636 162508 4218536 0 0 0 214 1132 397 0 4 96 0 0 3 0 2162944 4081640 162516 4218540 0 0 0 332 1111 554 2 3 94 0 0 1 0 2162944 4075104 162516 4218552 0 0 0 382 1179 566 2 3 95 0 0 The "bo" column, block out, is described in the man page as being blocks per second. I believe the blocks are 512 bytes. Okay; but then I used SNMP to fetch 1.3.6.1.4.1.2021.11.57.0 (ssIORawSent). That's an incrementing counter of blocks sent. I'm fetching it every 10 seconds, same as before. 3,204,124,952 1,603 820,736 3,204,139,960 1,500 768,000 3,204,155,848 1,588 813,056 3,204,164,600 875 448,000 3,204,184,536 1,993 1,020,416 3,204,194,184 964 493,568 3,204,204,040 896 458,752 3,204,218,696 1,465 750,080 3,204,235,224 1,652 845,824 The first column is the counter; the second column is the difference between them divided by the actual number of seconds elapsed (i.e. it tries to correct for imprecisions in the sleep; though in fact when I monitored that, it was hitting the exact second consistently), i.e, the second column is blocks per second. And the third column is bytes per second based on a 512-byte block. You'll note that the blocks per second figures are not compatible with the blocks per second figures from vmstat. These two sets of numbers overlap, and the numbers before and after are similar. So what's up with that ? (Here's my monitoring code that produced the second set of figures, in case I did something dumb-ass: #! /bin/bash set -e HOST=prcapp01 secs=10 lbc=0 lts=0 echo "blockcount bl/sec bytes/sec" while true; do bc=$( snmpget -v 2c -c xxx $HOST 1.3.6.1.4.1.2021.11.57.0 | cut -d' ' -f4 ) ts=$( date +%s ) if [[ $lbc > 0 ]]; then (( bsec = ( bc - lbc ) / ( ts - lts ) )) (( bytes = bsec * 512 )) #echo $lbc $bc $bsec $bytes $lts $ts printf "%'12d %'7d %'10d\n" $bc $bsec $bytes fi lbc="$bc" lts="$ts" sleep $secs done I have obfuscated the read-only community name.) -- David Dyer-Bennet, dd-b(a)dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info

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yum update fails for 5.6
by Alex 07 Nov '11

07 Nov '11

google for "centos error performing checksum" refers to createrepo but of course "yum install createrepo" also fails and the instructions appear to be overkill. Is there a "simple" soultion? here's the result of yum update: # yum -v update Loading "fastestmirror" plugin Config time: 0.118 Yum Version: 3.2.22 Setting up Package Sacks Loading mirror speeds from cached hostfile * base: mirror.science.uottawa.ca * extras: mirror.science.uottawa.ca * rpmforge: ftp-stud.fht-esslingen.de * updates: mirror.science.uottawa.ca rhel-src/primary | 1.1 MB 00:02 ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/repoda…: [Errno -3] Error performing checksum Trying other mirror. Error: failure: repodata/primary.xml.gz from rhel-src: [Errno 256] No more mirrors to try. and for repolist # yum repolist Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.science.uottawa.ca * extras: mirror.science.uottawa.ca * rpmforge: ftp-stud.fht-esslingen.de * updates: mirror.science.uottawa.ca rhel-src/primary | 1.1 MB 00:02 ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/repoda…: [Errno -3] Error performing checksum Trying other mirror. Error: failure: repodata/primary.xml.gz from rhel-src: [Errno 256] No more mirrors to try. TIA -- This message has been scanned for viruses and dangerous content by Avantel Systems, and is believed to be clean.

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Call supplicant on link detection
by Peter von Nostrand 07 Nov '11

07 Nov '11

Dear all, I have a working 802.1x structure with a bunch of Cisco switches, and a couple of NPS RADIUS servers. 802.1x auhtentication with MSCHAPv2 is working with Windows clients and I need to get some Centos clients into the structure. I've been using wpa_supplicant and now it would be usefull to have an auto start script when the interface detects a link and call the supplicant to authenticate the user prior to request an IP to the DHCP server. I've seen on ubuntu-like systems a pre-up set of options. Is there anything like that on Centos? Exists some way to detect a link on the interface, start the supplicant and after that start the interface with the configuration under ifcg-eth0 ? Sorry if this was discussed previusly. Thanks in advance. -- Peter

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CentOS-announce Digest, Vol 81, Issue 4
by centos-announce-request＠centos.org 07 Nov '11

07 Nov '11

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2011:1425 CentOS 5 x86_64 libhbaapi FASTTRACK Update (Johnny Hughes) 2. CEBA-2011:1425 CentOS 5 i386 libhbaapi FASTTRACK Update (Johnny Hughes) 3. CEBA-2011:1429 CentOS 5 x86_64 rsh Update (Johnny Hughes) 4. CEBA-2011:1429 CentOS 5 i386 rsh Update (Johnny Hughes) 5. CEBA-2011:1428 CentOS 5 x86_64 openais Update (Johnny Hughes) 6. CEBA-2011:1428 CentOS 5 i386 openais Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 7 Nov 2011 11:54:10 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1425 CentOS 5 x86_64 libhbaapi FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20111107115410.GA2447(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1425 Upstream details at : http://rhn.redhat.com/errata/RHBA-2011-1425.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 4a541edfb038fe2c08876cfed15c842a libhbaapi-2.2-6.el5.i386.rpm 96058c049788fd6b699ae2b7eef005a9 libhbaapi-2.2-6.el5.x86_64.rpm dbe1434f6a1ef4e57a2455c135088047 libhbaapi-devel-2.2-6.el5.i386.rpm c0e1219ebaa6f2016cbb22a93dafa872 libhbaapi-devel-2.2-6.el5.x86_64.rpm Source: 6896e6f69cc6046e25f76ea208138431 libhbaapi-2.2-6.el5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Mon, 7 Nov 2011 11:54:10 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1425 CentOS 5 i386 libhbaapi FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20111107115410.GA2431(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1425 Upstream details at : http://rhn.redhat.com/errata/RHBA-2011-1425.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 4a541edfb038fe2c08876cfed15c842a libhbaapi-2.2-6.el5.i386.rpm dbe1434f6a1ef4e57a2455c135088047 libhbaapi-devel-2.2-6.el5.i386.rpm Source: 6896e6f69cc6046e25f76ea208138431 libhbaapi-2.2-6.el5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Mon, 7 Nov 2011 11:56:58 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1429 CentOS 5 x86_64 rsh Update To: centos-announce(a)centos.org Message-ID: <20111107115658.GA2606(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1429 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1429.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 42f7f6bebca2bca06e92705df62aa4a6 rsh-0.17-40.el5_7.1.x86_64.rpm 518f2cf8031b802ac12e8a105e90cb8a rsh-server-0.17-40.el5_7.1.x86_64.rpm Source: 39346bb5b655903cb8f278c572109bb6 rsh-0.17-40.el5_7.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Mon, 7 Nov 2011 11:56:58 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1429 CentOS 5 i386 rsh Update To: centos-announce(a)centos.org Message-ID: <20111107115658.GA2587(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1429 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1429.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 2c197ffc732880dd3748d3f8627ccde5 rsh-0.17-40.el5_7.1.i386.rpm c050f22324d23b984c5c71c89b3da8b1 rsh-server-0.17-40.el5_7.1.i386.rpm Source: 39346bb5b655903cb8f278c572109bb6 rsh-0.17-40.el5_7.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Mon, 7 Nov 2011 12:22:51 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1428 CentOS 5 x86_64 openais Update To: centos-announce(a)centos.org Message-ID: <20111107122251.GA4052(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1428 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1428.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 126688c7a6716a8f8e729bf1515687ea openais-0.80.6-30.el5_7.2.x86_64.rpm 7f6edb85020fb379c879f1dbc4e69b34 openais-devel-0.80.6-30.el5_7.2.i386.rpm 33e1eff9d987867aff233f1467d139a5 openais-devel-0.80.6-30.el5_7.2.x86_64.rpm Source: eec17fc7b7d6b5c9be9b0d7391cdb8f7 openais-0.80.6-30.el5_7.2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 6 Date: Mon, 7 Nov 2011 12:22:51 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1428 CentOS 5 i386 openais Update To: centos-announce(a)centos.org Message-ID: <20111107122251.GA4036(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1428 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1428.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 4431392b84ecd4ee2f4426e9d1b21b7b openais-0.80.6-30.el5_7.2.i386.rpm 7f6edb85020fb379c879f1dbc4e69b34 openais-devel-0.80.6-30.el5_7.2.i386.rpm Source: eec17fc7b7d6b5c9be9b0d7391cdb8f7 openais-0.80.6-30.el5_7.2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 81, Issue 4 **********************************************

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Re: [CentOS] School cloud solution
by Doug Coats 07 Nov '11

07 Nov '11

I understand what google docs offers but it comes with the need for an email address that i can not make students have, the inability for me to control who has access to which files, and no way to get teachers access without each student configuring that on their own. My teachers have enough to worry about. They will not use a solution that is more difficult then what we already use. Any solution has to be a clear upgrade with advantages for it to be adopted. Sent from my ASUS Eee Pad John R Pierce <pierce(a)hogranch.com> wrote: >On 11/05/11 6:29 PM, Doug Coats wrote: >> Thanks for all of your thoughts. I will look into gollem. The clients at >> school are windows 7. At home the clients might be any number of OS's. >> Eventually we might be using some sort of tablet devise probably Android >> based. > >see, another problem with a 'file' based solution is editing >software... ok, you have windows7 at school... what format are the >documents in, MS Office 2010 ? Users at home are going to have a >motley mix of older versions and other platforms, possibly not have the >same font sets, etc etc. The Google App approach bypasses this >entirely, the client editing software is the browser and the google app >Ajax stuff. The documents are the same regardless of what platform the >user is on. > > > >-- >john r pierce N 37, W 122 >santa cruz ca mid-left coast > >_______________________________________________ >CentOS mailing list >CentOS(a)centos.org >http://lists.centos.org/mailman/listinfo/centos

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School cloud solution
by Doug Coats 07 Nov '11

07 Nov '11

This really isn't a CentOS specific queation but that is our server OS of choice. I manage a student file server and i would like to add cloud access to it. Basically i would like our students to have access to the same files at home that they have at school. This would allow them to start an asignment at home, finish it at school, and print it off without having to worry about losing their usb drive. I want it housed on our servers for backups and ease of access for our teachers when necessary. I have looked at Moodle but it has way to many layers that we are not interested in. I would like something like squirrel mail. A simple web login that then gives you access to your samba managed files. I have repeatedly searched for such capabilities but i have not found any that fit what i outlined above. Is there such a program out there? Thanks for your thoughts!

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CentOS 6: php-eaccelerator
by Reindl Harald 07 Nov '11

07 Nov '11

has anybody ever got eaccelerator working with open_basedir on CentOS? https://bugzilla.redhat.com/show_bug.cgi?id=751569 i wonder that the last build is more than a yaer ago and nobody hitted until now or nobody is secring his vhsost and so did not take notice about it http://koji.fedoraproject.org/koji/buildinfo?buildID=181336

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Discuss November 2011