http://www.3open.org/d/ 2010-09-04T23:35:08+08:00 http://www.3open.org/d/ http://www.3open.org/d/lib/images/favicon.ico text/html 2010-09-03T11:51:21+08:00 Michael Fung http://www.3open.org/d/ha/setup_resources_for_shared_storage?rev=1283485881&do=diff Enable Opt-in mode Setup cluster as “opt-in” mode: by default all resources will not start anywhere. crm_attribute --attr-name symmetric-cluster --attr-value false Setup a resource to run on all nodes Example to set rsc-1 for a 3-node cluster: text/html 2010-09-03T11:01:11+08:00 Michael Fung http://www.3open.org/d/ha/prepare_the_nodes?rev=1283482871&do=diff OS Upgrade from Lenny to Squeeze 1. Modify /etc/apt/sources.list: deb http://ftp.hk.debian.org/debian/ squeeze main contrib non-free deb http://security.debian.org/ squeeze/updates main contrib 2. Upgrade: apt-get update apt-get install apt dpkg aptitude aptitude full-upgrade text/html 2010-09-02T14:59:00+08:00 Michael Fung http://www.3open.org/d/ha/setup_ocfs2?rev=1283410740&do=diff These are written for Debian Squeeze. apt-get install ocfs2-tools Suppose we want 2 nodes, node1 and node2, to share the fs. Create file /etc/ocfs2/cluster.conf: node: ip_port = 7777 ip_address = 192.168.0.101 number = 0 name = node1 cluster = ocfs2 node: ip_port = 7777 ip_address = 192.168.0.102 number = 1 name = node2 cluster = ocfs2 cluster: node_count = 2 name = ocfs2 text/html 2010-09-02T13:47:50+08:00 Michael Fung http://www.3open.org/d/ha/ha?rev=1283406470&do=diff 2-Node Active/Passive HA Cluster The following sections show how to build a 2-node Active/Passive HA Cluster. All applications are run on an OpenVZ virtual machine to make configuration simple. * Prepare the nodes * Setup cluster infrastructure with Corosync * Setup shared storage with DRBD * Setup OpenVZ to use the DRBD device * Configure cluster properties * Add cluster resources * Enable STONITH device * How to fix DRBD split-brain situation manually * How to move resou… text/html 2010-08-31T20:03:21+08:00 Michael Fung 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 2010-08-31T12:16:18+08:00 Michael Fung 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 2010-08-31T12:07:39+08:00 Michael Fung 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 2010-08-30T11:29:14+08:00 Michael Fung http://www.3open.org/d/voyage/setup_transmission_bt?rev=1283138954&do=diff Transmission is small footprint, provides a web interface to control torrent downloads, good for headless device. Building I use version 1.76. A copy of the source is here: Make sure these are installed as stated in the transmission wiki: * build-essential * automake * autoconf * libtool * pkg-config * libcurl4-openssl-dev * intltool * libxml2-dev * libgtk2.0-dev * libnotify-dev * libglib2.0-dev text/html 2010-08-30T11:16:49+08:00 Michael Fung http://www.3open.org/d/voyage/how_to_make_root_fs_read_only_from_start_to_stop?rev=1283138209&do=diff Disable mounting root fs ReadWrite during boot Patch file /etc/init.d/checkroot.sh: --- checkroot.sh.old 2010-07-11 11:11:34.000000000 +0000 +++ checkroot.sh 2010-07-11 11:11:51.000000000 +0000 @@ -48,7 +48,7 @@ rootdev=none roottype=none rootopts=defaults - rootmode=rw + rootmode=ro rootcheck=no swap_on_lv=no swap_on_file=no