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Best way to integrate CentOS in Windows AD environment
by Alfred von Campe 08 May '15

08 May '15

We currently use a combination of Kerberos and NIS to manage users on our CentOS 6 systems in a Windows AD environment. NIS is provided by Windows Services for UNIX (or something named similarly), which has some issues, and is also not going to be supported by Microsoft in the future. NIS supplies the passed file as well as the auto mount map for home directories as shown by this excerpt from our /etc/nsswitch.conf file: passwd: files nis shadow: files nis group: files nis Our systems are configured using something similar to the following in our Kickstart config file: authconfig --enablemd5 --passalgo=sha512 --enablenis —nisdomain=XXX \ --nisserver=nis.XXX.com,nis2.XXX.com --useshadow --enablekrb5 \ --krb5realm=XXX.COM --krb5kdc=ldap.XXX.com --krb5adminserver=ldap.XXX.com <http://ldap.xxx.com/> where nis1 and nis2 are the local AD domain controllers. With this configuration, any user can log into any CentOS system, and their home directory is automatically mounted over NFS with autofs. This works great, except for when the network is down and/or the home directory NFS server is not available, when the systems pretty much just hang. It’s also only good for workstations and servers, but not laptops that may not be on the network. I would like to move to CentOS 7 and a model where we don’t use NIS at all, the users and (local) home directories are automatically created on login using the UID stored on the LDAP server. Before I re-invent the wheel, has somebody done this already? If so, can you share the authconfig line from your Kickstart file? To summarize, I’d like to: Use LDAP/Kerberos provided by Windows AD servers to authenticate users Automatically create accounts/home directories upon first login Not require the system to be on the network (provided the user has logged in at least once to create the account locally) Thanks in advance for any suggestions/examples. Alfred

3 2

openvpn and firewalld
by Bowie Bailey 08 May '15

08 May '15

I am trying to build a new openvpn server based on CentOS7. Everything is working fine as long as I disable firewalld. With firewalld enabled, I can connect to the vpn and ping the machines on the network, but I am unable to ssh to them. What I had on my old server with iptables was two simple rules: -A RH-Firewall-1-INPUT -s <localnet>/255.255.0.0 -d <vpnnet>/255.255.0.0 -j ACCEPT -A RH-Firewall-1-INPUT -s <vpnnet>/255.255.0.0 -d <localnet>/255.255.0.0 -j ACCEPT This allowed all traffic to flow between my vpn subnet and the local network. How can I duplicate this behavior with firewalld? I even tried using the --direct option to put in these same rules without success. Although I may not have done it quite right -- firewalld seems to have added 20 extra chains to the rule structure and I'm not sure exactly where I should put these rules. Unfortunately, I cannot easily debug this while I'm at the office, but if you can give me any suggestions, I can try them out when I get home tonight. Thanks! -- Bowie

1 1

Re: [CentOS] Apache 2.2 itk - 404 not found
by Richard 08 May '15

08 May '15

More specifically -- when you get the "not found" in the browser there should be an entry logged in the error log. E.g., tail the error log, issue a request, and see what you see. The error log entry will show the details of what is being requested and generally gives strong hints as to why it can't be found (pathing, access, etc.). If you don't get an entry in the error log that you are looking at then double check your configuration to make certain you are are looking at the one for the apache instance in question. You don't need to change the debug level for what you need for this. ------------ Original Message ------------ > Date: Friday, May 08, 2015 08:12:02 AM -0400 > From: John <tuxfed(a)gmail.com> > > On 15-05-07 04:52 PM, Richard wrote: >> What is showing in the apache error log? >> >> >> ------------ Original Message ------------ >>> Date: Thursday, May 07, 2015 04:28:16 PM -0400 >>> From: John <tuxfed(a)gmail.com> >>> >>> Directories permissions: 755 Files permissions: 644 >>> >>> On 15-05-07 04:21 PM, John wrote: >>>> I forgot to mention it. All the files under /var/html are owned >>>> by apache:apache >>>> >>>> On 15-05-07 04:07 PM, Eric Lehmann wrote: >>>>> Have you checked the file rights under your document root ? >>>>> Your apache group need reading right. >>>>> Am 07.05.2015 21:42 schrieb "John" <tuxfed(a)gmail.com>: >>>>> >>>>>> Hi all, Freshly installed apache 2.2 with httpd-itk (from >>>>>> epel). When I try to access apache's document root from a >>>>>> browser on local network, it >>>>>> always serve me the Apache welcome page, even if I have a >>>>>> index.html and a >>>>>> phpinfo.php file in the /var/www/html folder. If point the >>>>>> browser specifically to http://server/index.html, I get a '404 >>>>>> Not found error'. >>>>>> I'm running CentOS 6.6 x86_64. I've been googling this for a >>>>>> couple of days >>>>>> and found nothing. Here's a few output that might be useful: >> >> ------------ End Original Message ------------ >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS(a)centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > I've set log level to debug so there is a lot of info but no major > error: > [Thu May 07 15:09:37 2015] [info] Init: Seeding PRNG with 256 > bytes of entropy > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(253): > shmcb_init allocated 512000 bytes of shared memory > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(272): for > 511920 bytes (512000 including header), recommending 32 subcaches, > 133 indexes each > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(306): > shmcb_init_memory choices follow > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(308): > subcache_num = 32 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(310): > subcache_size = 15992 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(312): > subcache_data_offset = 3208 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(314): > subcache_data_size = 12784 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(316): > index_num = 133 > [Thu May 07 15:09:37 2015] [info] Shared memory session cache > initialised > [Thu May 07 15:09:37 2015] [info] Init: Initializing (virtual) > servers for SSL > [Thu May 07 15:09:37 2015] [info] mod_ssl/2.2.15 compiled against > Server: Apache/2.2.15, Library: OpenSSL/1.0.1e-fips > [Thu May 07 15:09:37 2015] [notice] Digest: generating secret for > digest authentication ... > [Thu May 07 15:09:37 2015] [notice] Digest: done > [Thu May 07 15:09:37 2015] [debug] util_ldap.c(2089): LDAP merging > Shared Cache conf: shm=0x7fd669f49f98 rmm=0x7fd669f49ff0 for > VHOST: backuppc.localdomain > [Thu May 07 15:09:37 2015] [debug] util_ldap.c(2089): LDAP merging > Shared Cache conf: shm=0x7fd669f49f98 rmm=0x7fd669f49ff0 for > VHOST: webERP > [Thu May 07 15:09:37 2015] [debug] util_ldap.c(2089): LDAP merging > Shared Cache conf: shm=0x7fd669f49f98 rmm=0x7fd669f49ff0 for > VHOST: localhost > [Thu May 07 15:09:37 2015] [info] APR LDAP: Built with OpenLDAP > LDAP SDK > [Thu May 07 15:09:37 2015] [info] LDAP: SSL support available > [Thu May 07 15:09:37 2015] [info] Init: Seeding PRNG with 256 > bytes of entropy > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(253): > shmcb_init allocated 512000 bytes of shared memory > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(272): for > 511920 bytes (512000 including header), recommending 32 subcaches, > 133 indexes each > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(306): > shmcb_init_memory choices follow > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(308): > subcache_num = 32 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(310): > subcache_size = 15992 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(312): > subcache_data_offset = 3208 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(314): > subcache_data_size = 12784 > [Thu May 07 15:09:37 2015] [debug] ssl_scache_shmcb.c(316): > index_num = 133 > [Thu May 07 15:09:37 2015] [info] Shared memory session cache > initialised > [Thu May 07 15:09:37 2015] [info] Init: Initializing (virtual) > servers for SSL > [Thu May 07 15:09:37 2015] [info] mod_ssl/2.2.15 compiled against > Server: Apache/2.2.15, Library: OpenSSL/1.0.1e-fips > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24112 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24112 for (*) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24113 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24113 for (*) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24114 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24114 for (*) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24115 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24115 for (*) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24116 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24116 for (*) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24117 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24117 for (*) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24118 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24118 for (*) > [Thu May 07 15:09:37 2015] [notice] Apache/2.2.22 (Unix) DAV/2 > PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.1e-fips configured -- > resuming normal operations > [Thu May 07 15:09:37 2015] [info] Server built: Aug 18 2014 > 14:54:53 > [Thu May 07 15:09:37 2015] [debug] itk.c(1105): AcceptMutex: > sysvsem (default: sysvsem) > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1833): proxy: > grabbed scoreboard slot 0 in child 24119 for worker proxy:reverse > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1852): proxy: > worker proxy:reverse already initialized > [Thu May 07 15:09:37 2015] [debug] proxy_util.c(1949): proxy: > initialized single connection worker 0 in child 24119 for (*) > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos ------------ End Original Message ------------

3 2

Re: [CentOS] Apache 2.2 itk - 404 not found
by Richard 08 May '15

08 May '15

What is showing in the apache error log? ------------ Original Message ------------ > Date: Thursday, May 07, 2015 04:28:16 PM -0400 > From: John <tuxfed(a)gmail.com> > > Directories permissions: 755 Files permissions: 644 > > On 15-05-07 04:21 PM, John wrote: >> I forgot to mention it. All the files under /var/html are owned >> by apache:apache >> >> On 15-05-07 04:07 PM, Eric Lehmann wrote: >>> Have you checked the file rights under your document root ? >>> Your apache group need reading right. >>> Am 07.05.2015 21:42 schrieb "John" <tuxfed(a)gmail.com>: >>> >>>> Hi all, Freshly installed apache 2.2 with httpd-itk (from >>>> epel). When I try to access apache's document root from a >>>> browser on local network, it >>>> always serve me the Apache welcome page, even if I have a >>>> index.html and a >>>> phpinfo.php file in the /var/www/html folder. If point the >>>> browser specifically to http://server/index.html, I get a '404 >>>> Not found error'. >>>> I'm running CentOS 6.6 x86_64. I've been googling this for a >>>> couple of days >>>> and found nothing. Here's a few output that might be useful: ------------ End Original Message ------------

2 1

[OT] eventlog-to-syslog
by m.roth＠5-cent.us 07 May '15

07 May '15

<rant> So, we've got a couple of WinDoze servers, and we getting logs from them. Except the logs seem to stop on occasion. My manager set me onto this (I *loathe* WinDoze, but someone's gotta do it), and I finally found out that a previous co-worker installed eventlog-to-syslog, which seems to be hosted in google code. And it *seems* to have come from Purdue Univ. So < found the readme, and wanted to cut down the verbosity. There's a startup flag for this. The log levels are: 1: critical 2: error 3: warning 4: info 0: everything/verbosity The start flag that you can give it is the "minimum" log level. And no, I did *not* write those levels out of order. Can *anyone* explain to me in what number system 0 is *not* less than 3?.... </rant> mark

3 2

Apache 2.2 itk - 404 not found
by John 07 May '15

07 May '15

Hi all, Freshly installed apache 2.2 with httpd-itk (from epel). When I try to access apache's document root from a browser on local network, it always serve me the Apache welcome page, even if I have a index.html and a phpinfo.php file in the /var/www/html folder. If point the browser specifically to http://server/index.html, I get a '404 Not found error'. I'm running CentOS 6.6 x86_64. I've been googling this for a couple of days and found nothing. Here's a few output that might be useful: [root@srv01 ~]# rpm -qa |grep httpd httpd-itk-2.2.22-7.el6.x86_64 httpd-tools-2.2.15-39.el6.centos.x86_64 httpd-2.2.15-39.el6.centos.x86_64 [root@srv01 ~]# cat /etc/httpd/conf/httpd.conf |grep -v ^# |grep -v ^$ ServerTokens Prod ServerRoot "/etc/httpd" PidFile run/httpd.pid Timeout 60 KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 15 <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 20 ServerLimit 256 MaxClients 256 MaxRequestsPerChild 4000 </IfModule> <IfModule worker.c> StartServers 4 MaxClients 300 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 </IfModule> Listen 80 LoadModule auth_basic_module modules/mod_auth_basic.so LoadModule auth_digest_module modules/mod_auth_digest.so LoadModule authn_file_module modules/mod_authn_file.so LoadModule authn_alias_module modules/mod_authn_alias.so LoadModule authn_anon_module modules/mod_authn_anon.so LoadModule authn_dbm_module modules/mod_authn_dbm.so LoadModule authn_default_module modules/mod_authn_default.so LoadModule authz_host_module modules/mod_authz_host.so LoadModule authz_user_module modules/mod_authz_user.so LoadModule authz_owner_module modules/mod_authz_owner.so LoadModule authz_groupfile_module modules/mod_authz_groupfile.so LoadModule authz_dbm_module modules/mod_authz_dbm.so LoadModule authz_default_module modules/mod_authz_default.so LoadModule ldap_module modules/mod_ldap.so LoadModule authnz_ldap_module modules/mod_authnz_ldap.so LoadModule include_module modules/mod_include.so LoadModule log_config_module modules/mod_log_config.so LoadModule logio_module modules/mod_logio.so LoadModule env_module modules/mod_env.so LoadModule ext_filter_module modules/mod_ext_filter.so LoadModule mime_magic_module modules/mod_mime_magic.so LoadModule expires_module modules/mod_expires.so LoadModule deflate_module modules/mod_deflate.so LoadModule headers_module modules/mod_headers.so LoadModule usertrack_module modules/mod_usertrack.so LoadModule setenvif_module modules/mod_setenvif.so LoadModule mime_module modules/mod_mime.so LoadModule dav_module modules/mod_dav.so LoadModule status_module modules/mod_status.so LoadModule autoindex_module modules/mod_autoindex.so LoadModule info_module modules/mod_info.so LoadModule dav_fs_module modules/mod_dav_fs.so LoadModule vhost_alias_module modules/mod_vhost_alias.so LoadModule negotiation_module modules/mod_negotiation.so LoadModule dir_module modules/mod_dir.so LoadModule actions_module modules/mod_actions.so LoadModule speling_module modules/mod_speling.so LoadModule userdir_module modules/mod_userdir.so LoadModule alias_module modules/mod_alias.so LoadModule substitute_module modules/mod_substitute.so LoadModule rewrite_module modules/mod_rewrite.so LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_balancer_module modules/mod_proxy_balancer.so LoadModule proxy_ftp_module modules/mod_proxy_ftp.so LoadModule proxy_http_module modules/mod_proxy_http.so LoadModule proxy_ajp_module modules/mod_proxy_ajp.so LoadModule proxy_connect_module modules/mod_proxy_connect.so LoadModule cache_module modules/mod_cache.so LoadModule disk_cache_module modules/mod_disk_cache.so LoadModule cgi_module modules/mod_cgi.so LoadModule version_module modules/mod_version.so Include conf.d/*.conf User apache Group apache ServerAdmin xxxxxxxxxxx(a)xxxxxxxxx.ca ServerName localhost:80 UseCanonicalName Off DocumentRoot "/var/www/html" <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory "/var/www/html"> Options Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> <IfModule mod_userdir.c> # # UserDir is disabled by default since it can confirm the presence # of a username on the system (depending on home directory # permissions). # UserDir disabled # # To enable requests to /~user/ to serve the user's public_html # directory, remove the "UserDir disabled" line above, and uncomment # the following line instead: # #UserDir public_html </IfModule> DirectoryIndex index.html index.htm index.php AccessFileName .htaccess <Files ~ "^\.ht"> Order allow,deny Deny from all Satisfy All </Files> TypesConfig /etc/mime.types DefaultType text/plain <IfModule mod_mime_magic.c> MIMEMagicFile conf/magic </IfModule> HostnameLookups Off ErrorLog logs/error_log LogLevel debug LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common LogFormat "%{Referer}i -> %U" referer LogFormat "%{User-agent}i" agent CustomLog logs/access_log combined ServerSignature On Alias /icons/ "/var/www/icons/" <Directory "/var/www/icons"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order allow,deny Allow from all </Directory> <IfModule mod_dav_fs.c> # Location of the WebDAV lock database. DAVLockDB /var/lib/dav/lockdb </IfModule> ScriptAlias /cgi-bin/ "/var/www/cgi-bin/" <Directory "/var/www/cgi-bin"> AllowOverride None Options None Order allow,deny Allow from all </Directory> IndexOptions FancyIndexing VersionSort NameWidth=* HTMLTable Charset=UTF-8 AddIconByEncoding (CMP,/icons/compressed.gif) x-compress x-gzip AddIconByType (TXT,/icons/text.gif) text/* AddIconByType (IMG,/icons/image2.gif) image/* AddIconByType (SND,/icons/sound2.gif) audio/* AddIconByType (VID,/icons/movie.gif) video/* AddIcon /icons/binary.gif .bin .exe AddIcon /icons/binhex.gif .hqx AddIcon /icons/tar.gif .tar AddIcon /icons/world2.gif .wrl .wrl.gz .vrml .vrm .iv AddIcon /icons/compressed.gif .Z .z .tgz .gz .zip AddIcon /icons/a.gif .ps .ai .eps AddIcon /icons/layout.gif .html .shtml .htm .pdf AddIcon /icons/text.gif .txt AddIcon /icons/c.gif .c AddIcon /icons/p.gif .pl .py AddIcon /icons/f.gif .for AddIcon /icons/dvi.gif .dvi AddIcon /icons/uuencoded.gif .uu AddIcon /icons/script.gif .conf .sh .shar .csh .ksh .tcl AddIcon /icons/tex.gif .tex AddIcon /icons/bomb.gif core AddIcon /icons/back.gif .. AddIcon /icons/hand.right.gif README AddIcon /icons/folder.gif ^^DIRECTORY^^ AddIcon /icons/blank.gif ^^BLANKICON^^ DefaultIcon /icons/unknown.gif ReadmeName README.html HeaderName HEADER.html IndexIgnore .??* *~ *# HEADER* README* RCS CVS *,v *,t AddLanguage ca .ca AddLanguage cs .cz .cs AddLanguage da .dk AddLanguage de .de AddLanguage el .el AddLanguage en .en AddLanguage eo .eo AddLanguage es .es AddLanguage et .et AddLanguage fr .fr AddLanguage he .he AddLanguage hr .hr AddLanguage it .it AddLanguage ja .ja AddLanguage ko .ko AddLanguage ltz .ltz AddLanguage nl .nl AddLanguage nn .nn AddLanguage no .no AddLanguage pl .po AddLanguage pt .pt AddLanguage pt-BR .pt-br AddLanguage ru .ru AddLanguage sv .sv AddLanguage zh-CN .zh-cn AddLanguage zh-TW .zh-tw LanguagePriority en ca cs da de el eo es et fr he hr it ja ko ltz nl nn no pl pt pt-BR ru sv zh-CN zh-TW ForceLanguagePriority Prefer Fallback AddDefaultCharset UTF-8 AddType application/x-compress .Z AddType application/x-gzip .gz .tgz AddType application/x-x509-ca-cert .crt AddType application/x-pkcs7-crl .crl AddHandler type-map var AddType text/html .shtml AddOutputFilter INCLUDES .shtml Alias /error/ "/var/www/error/" <IfModule mod_negotiation.c> <IfModule mod_include.c> <Directory "/var/www/error"> AllowOverride None Options IncludesNoExec AddOutputFilter Includes html AddHandler type-map var Order allow,deny Allow from all LanguagePriority en es de fr ForceLanguagePriority Prefer Fallback </Directory> </IfModule> </IfModule> BrowserMatch "Mozilla/2" nokeepalive BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0 BrowserMatch "RealPlayer 4\.0" force-response-1.0 BrowserMatch "Java/1\.0" force-response-1.0 BrowserMatch "JDK/1\.0" force-response-1.0 BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully BrowserMatch "MS FrontPage" redirect-carefully BrowserMatch "^WebDrive" redirect-carefully BrowserMatch "^WebDAVFS/1.[0123]" redirect-carefully BrowserMatch "^gnome-vfs/1.0" redirect-carefully BrowserMatch "^XML Spy" redirect-carefully BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully NameVirtualHost *:80 Include conf.vhosts/*.conf

3 5

ntpdate odd behavior
by Jerry Geis 07 May '15

07 May '15

I noticed this morning that my ntp time was not correct on machines. So I manually ran "ntpdate time.apple.com" on my clients, I got 7 May 08:46:43 ntpdate[10550]: no server suitable for synchronization found then I ran "ntpdate -d time.apple.com" and it worked . filter offset: -163.446 -163.446 -163.446 -163.447 0.000000 0.000000 0.000000 0.000000 delay 0.20570, dispersion 0.00049 offset -163.447341 7 May 08:46:25 ntpdate[10519]: step time server 17.253.2.243 offset -163.447144 sec then I ran "ntpdate time.apple.com" again and got the above error again. Any idea what that is about? Why is ntpdate giving the error? This is on centos 6.6 x86_64 and same result on 3 machines. Thanks, jerry

2 2

VirtIO drivers and CentOS 5.4(Final)
by Jatin Davey 07 May '15

07 May '15

Hi All My guest is a CentOS 5.4 VM: [root@localhost ~]# uname -a Linux localhost 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux [root@localhost ~]# cat /etc/*release CentOS release 5.4 (Final) I wanted to know if the virtio drivers on this guest are stable. The reason for asking this question is that i found this link: http://wiki.libvirt.org/page/Virtio which states that in order to use the virtio drivers i need to be using the kernel >=2.6.25 , but i am using the kernel version 2.6.18 in my guest VM. I am actually able to use the virtio drivers in my VM even with this kernel version and hence i wanted to know if they are stable to be used. Did red hat backport these drivers to CentOS 5.4 ? If yes , Can you please point me to any bug to track this backport activity or any announcement of this backport task ? I need that to show to my team so that we can release note this information as part of releasing our product. Appreciate your help in this regard. Thanks Jatin

7 15

Cannot remount drive after lost iSCSI connection
by Kyle Thorne 06 May '15

06 May '15

Hi all, We've having an issue at the moment where an iSCSI connection was temporarily lost on a few VMs running CentOS 6 on ESXi. The problem is, now that the iSCSI connection has returned, we are not able to remount the drive. At first the drive is read-only, so I tried '*mount -o remount,rw*' which didn't work (still read-only), so then I tried a '*umount*' (which worked), but now I get the following error when trying to mount it again: root@server [~]# mount /backup/ mount: /dev/sdb1 already mounted or /backup busy root@server [~]# mount /dev/sdb1 mount: /dev/sdb1 already mounted or /backup busy I have also tried '*echo "- - -" > /sys/class/scsi_host/host1/scan*' and checked to see if any processes were using /dev/sdb1 or /backup using ' *fuser*' and '*lsof*'. I know a reboot will solve it, but I'm trying to avoid that as best I can, so I'm wondering if anyone else has any other ideas? Any help would be greatly appreciated, thanks. :) Regards, Kyle Thorne -- *The contents of this email are strictly private and confidential unless otherwise noted and is intended for the marked recipients only. If you are not a marked recipient please disregard and delete this email.*

4 4

website suggestions
by Greg Lindahl 06 May '15

06 May '15

The front page of centos.org refers to "CentOS 7 (1503)". I thought that the final decision was to call it "CentOS 7.1 (1503)", so that people wouldn't be confused when comparing the upstream and CentOS versions? While we're at it, if I click on "Documentation" it doesn't show any docs for CentOS 6 or CentOS 7. I know why, but it really ought to be explained. -- greg

1 0

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