http://www.3open.org/d/ 2010-09-11T04:37:50+08:00 http://www.3open.org/d/ http://www.3open.org/d/lib/images/favicon.ico text/html 2010-03-25T14:38:14+08:00 http://www.3open.org/d/tips/amavisd-new_basic_setup?rev=1269499094&do=diff Updated for version 2.6.4. Setup user and folders Create user to run the daemon useradd -d /var/amavis amavis Setup folders: # working folder: mkdir /var/amavis/tmp chown -R amavis.amavis /var/amavis/ # quarantine folder: mkdir /u/virusmails chown amavis /u/virusmails text/html 2010-02-23T20:46:46+08:00 http://www.3open.org/d/tips/backup_directory_structure_only_using_tar?rev=1266929206&do=diff tar cvf dirbackup.tar --no-recursion `find /path/to/backup -type d` text/html 2010-02-04T16:00:15+08:00 http://www.3open.org/d/tips/backup_using_rsync?rev=1265270415&do=diff You need to install cygwin. Within the cygwin setup program, install rsync. Suppose your user name is mike, and you install cygwin in C:\cygwin. Create a shell script C:\cygwin\home\mike\data-backup.sh to do the job: #!/bin/sh # these are needed to support Chinese characters LANG=en_US.UTF-8; export LANG set meta-flag on set convert-meta off # to show it as character, not the octal representation set output-meta on # to show 8-bit characters set input-meta on # sync my data files in C… text/html 2010-08-22T20:50:20+08:00 http://www.3open.org/d/tips/clone_vmdk_files_using_vmkfstools?rev=1282481420&do=diff To clone a thin provisioned .vmdk virtual disk: # clone vm1.vmdk to vm2.vmdk vmkfstools -i vm1/vm1.vmdk -d thin vm2/vm2.vmdk text/html 2010-08-31T12:07:39+08:00 http://www.3open.org/d/tips/linux_administration_tips?rev=1283227659&do=diff * Backup directory structure only using tar * Setup ACL for folders * Amavisd-new basic setup * Setup email disclaimer with altermime and amavisd-new * Setup repository for CentOS updates * Setup TLS PKI and stuff * Using Debian Live * Using OpenVZ * Using apt-cache-ng to speed up APT packages download * RHEL 6 Beta * Setup STGT iSCSI target * Setup iSCSI Initiator text/html 2010-08-20T15:30:59+08:00 http://www.3open.org/d/tips/rhel_6_beta?rev=1282289459&do=diff Setup YUM Repository Using the DVD Media Edit /etc/yum/pluginconf.d/refresh-packagekit.conf, disable it: [main] enabled=0 Create file /etc/yum.repos.d/dvd-media.repo: [rhel6-Base] name=RHEL 6 Beta - Base baseurl=file:///media/cdrom/ gpgcheck=0 enabled=1 metadata_expire=-1 [rhel6-HighAvailability] name=RHEL 6 Beta - HighAvailability baseurl=file:///media/cdrom/HighAvailability gpgcheck=0 enabled=1 metadata_expire=-1 [rhel6-ClusteredStorage] name=RHEL 6 Beta - ClusteredStorage baseurl… text/html 2010-04-14T11:46:53+08:00 http://www.3open.org/d/tips/setup_acl_for_folders?rev=1271216813&do=diff Before setting up ACL (access control list) for folders, we must enable in mounting, so in /etc/fstab we have something like: /dev/VG01/LV01 /data ext3 defaults,acl 1 2 For new folders We use the --set switch here. It overwrites existing ACL. text/html 2010-03-29T12:20:17+08:00 http://www.3open.org/d/tips/setup_email_disclaimer_with_altermime_and_amavisd-new?rev=1269836417&do=diff Install altermime Get the altermime program from official site at <http://pldaniels.com/altermime/> or a copy here: . Build and install: cd /src-dir make make install The the binary will be placed in /usr/local/bin. Prepare the disclaimer content files Two format of the disclaimer should be prepared, one text and one html. text/html 2010-08-31T12:16:18+08:00 http://www.3open.org/d/tips/setup_iscsi_initiator?rev=1283228178&do=diff This article is for Debian Squeeze. Install required package apt-get install open-iscsi Configuration Edit file /etc/iscsi/initiatorname.iscsi to set your name, example: InitiatorName=iqn.2010-07.com.example:node1 Connection Import target devices into database: text/html 2010-05-05T14:32:04+08:00 http://www.3open.org/d/tips/setup_repository_for_centos_updates?rev=1273041124&do=diff Aim To save download time and bandwidth every time I install a fresh CentOS system. Choose an Official Mirror I use the cuhk mirror at: ftp://ftp.cuhk.edu.hk/pub/Linux/centos/ Scripts Create this tree structure: mkdir -p /mnt/usbdisk/centos/updates/ mkdir -p /mnt/usbdisk/centos/extras/ mkdir -p /mnt/usbdisk/centos/epel/ text/html 2010-08-31T20:03:21+08:00 http://www.3open.org/d/tips/setup_stgt_iscsi_target?rev=1283256201&do=diff These steps are for Debian Squeeze. Install required package Install stock package apt-get install tgt Build from source For example, build version 1.0.8. cd ./tgt-1.0.8/usr make ISCSI=1 strip tgtd tgtadm tgtimg cp -v tgtd tgtadm tgtimg /usr/sbin/ text/html 2010-06-19T09:35:48+08:00 http://www.3open.org/d/tips/using_apt-cache-ng_to_speed_up_apt_packages_download?rev=1276911348&do=diff Install the program: apt-get install apt-cache-ng Edit /etc/apt-cacher-ng/acng.conf : # Change to preferred storage location: CacheDir: /mnt/usbdisk/apt-cacher-ng Set APT to use cache by: Edit /etc/apt/apt.conf: Acquire::http {Proxy "http://192.168.0.1:3142";}; text/html 2010-06-04T12:27:05+08:00 http://www.3open.org/d/tips/using_debian_live?rev=1275625625&do=diff Concepts * Debian-Live is a collection of scripts and templates for building live-cd and stuff. * It creates a full linux system in ./chroot and converts it to a ISO image. Configuration First of all, create a folder as the root for the building, e.g. live-root. Then execute all commands under this folder. text/html 2010-06-30T14:06:51+08:00 http://www.3open.org/d/tips/using_openvz?rev=1277878011&do=diff Load pre-created template cache file 1. Download from <http://download.openvz.org/template/precreated/> 2. Copy the .tar.gz file to /vz/template/cache/. Example: cp debian-5.0-x86.tar.gz /vz/template/cache/ Create VE / VPS vzctl create 103 --ostemplate debian-5.0-x86 text/html 2010-08-21T10:08:45+08:00 http://www.3open.org/d/tips/vmware_administration_tips?rev=1282356525&do=diff * Clone vmdk files using vmkfstools text/html 2010-01-22T15:47:58+08:00 http://www.3open.org/d/tips/windows_administration_tips?rev=1264146478&do=diff * backup using rsync