Debian6.04 Postgresql

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　　前言：本人机器:AMD64x2 4400++ 1G 内存
                           
第一阶段-编译安装：
1，从postgresql官网下载postgresql-9.1.3.tar.bz2这个我想大家都知道的
2，把源代码复制到/usr/src/postgresql-9.1.3.tar.bz2 且 cd /usr/src
3，解压： tar xjvf postgresql-9.1.3.tar.bz2
4,进入源码目录： cd postgresql-9.1.3
5,建立pgsql安装目录。这里我选择 ：mkdir /usr/pgsql-9.1.3
6，安装必须的工具执行：aptitude install build-essential zlib1g-dev libpam0g-dev libssl-dev libperl-dev kernel-package libncurses5-dev flex bison gawk chkconfig系统会自动安装所以来的软件
7,在源码目录里面执行下面命令：
./configure   CFLAGS='-DLINUX_OOM_ADJ=0 -O2 -pipe -march=athlon64 -fomit-frame-pointer -fstack-protector' --prefix=/usr/pgsql-9.1.3 --with-perl --with-openssl --with-pam --enable-nls --disable-debug
8，开始编译 ：make -j 4
9,变成成功后，执行 make install 安装
10，建立postgresql数据库专用普通权限用户 :adduser psqlroot
11，切换到安装目录: cd /usr/pgsql-9.1.3建立初始化数据库集群文件夹:mkdir date
12,改变date所有权限 chown psqlroot:psqlroot date
13,执行数据库初始化(必须使用psqlroot用户）：su - psqlroot -c './initdb /usr/pgsql-9.1.3/date'
14，好了，进入date目录可以看到初始化后的文件，比如conf配置文件等等。
　　第二阶段-制作启动脚本：
1，从源代码目录里面复制出原始的开机脚本:
cp /usr/src/postgresql-9.1.3/contrib/start-scripts/linux    /etc/init.d/postgresql
2,给予执行权限:chmod 700 /etc/init.d/postgresql
3，建立s 2 3 4 5 6各个级别启动连接在(/etc/rcS.d rc1.d rc2.d rc3.d rc4.d rc5.d rc6.d)
   使用:chkconfig /etc/init.d/postgresql自动建立 呵呵很方便哦！
4，修改/etc/init.d/postgresql文件，这个文件是用/bin/sh基础的，改成/bin/bash的：
　　#! /bin/bash
　　# chkconfig: 2345 98 02
# description: PostgreSQL RDBMS
　　# This is an example of a start/stop script for SysV-style init, such
# as is used on Linux systems.  You should edit some of the variables
# and maybe the 'echo' commands.
#
# Place this file at /etc/init.d/postgresql (or
# /etc/rc.d/init.d/postgresql) and make symlinks to
#   /etc/rc.d/rc0.d/K02postgresql
#   /etc/rc.d/rc1.d/K02postgresql
#   /etc/rc.d/rc2.d/K02postgresql
#   /etc/rc.d/rc3.d/S98postgresql
#   /etc/rc.d/rc4.d/S98postgresql
#   /etc/rc.d/rc5.d/S98postgresql
# Or, if you have chkconfig, simply:
# chkconfig --add postgresql
#
# Proper init scripts on Linux systems normally require setting lock
# and pid files under /var/run as well as reacting to network
# settings, so you should treat this with care.
　　# Original author:  Ryan Kirkpatrick <pgsql@rkirkpat.net>
　　# contrib/start-scripts/linux
　　## EDIT FROM HERE
　　# Installation PREFIX
PREFIX=/usr/pgsql-9.1.3
　　# Data directory
PGDATA=$PREFIX/date
　　# Who to run the postmaster as, usually &quot;postgres&quot;.  (NOT &quot;root&quot;)
PGUSER=psqlroot
　　# Where to keep a log file
PGLOG=/var/log/serverlog
　　# It's often a good idea to protect the postmaster from being killed by the
# OOM killer (which will tend to preferentially kill the postmaster because
# of the way it accounts for shared memory).  Setting the OOM_ADJ value to
# -17 will disable OOM kill altogether.  If you enable this, you probably want
# to compile PostgreSQL with &quot;-DLINUX_OOM_ADJ=0&quot;, so that individual backends
# can still be killed by the OOM killer.
OOM_ADJ=-17
　　## STOP EDITING HERE
　　# The path that is to be used for the script
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
　　# What to use to start up the postmaster.  (If you want the script to wait
# until the server has started, you could use &quot;pg_ctl start -w&quot; here.
# But without -w, pg_ctl adds no value.)
DAEMON=&quot;$PREFIX/bin/postmaster&quot;
　　# What to use to shut down the postmaster
PGCTL=&quot;$PREFIX/bin/pg_ctl&quot;
　　set -e
　　# Only start if we can find the postmaster.
test -x $DAEMON ||
{
echo &quot;$DAEMON not found&quot;
if [ &quot;$1&quot; = &quot;stop&quot; ]
then exit 0
else exit 5
fi
}
　　
# Parse command line parameters.
case $1 in
  start)
echo -n &quot;Starting PostgreSQL: &quot;
test x&quot;$OOM_ADJ&quot; != x && echo &quot;$OOM_ADJ&quot; > /proc/self/oom_adj
su - $PGUSER -c &quot;$DAEMON -D $PGDATA &&quot; >>$PGLOG 2>&1
echo &quot;ok&quot;
;;
  stop)
echo -n &quot;Stopping PostgreSQL: &quot;
su - $PGUSER -c &quot;$PGCTL stop -D '$PGDATA' -s -m fast&quot;
echo &quot;ok&quot;
;;
  restart)
echo -n &quot;Restarting PostgreSQL: &quot;
su - $PGUSER -c &quot;$PGCTL stop -D '$PGDATA' -s -m fast -w&quot;
test x&quot;$OOM_ADJ&quot; != x && echo &quot;$OOM_ADJ&quot; > /proc/self/oom_adj
su - $PGUSER -c &quot;$DAEMON -D '$PGDATA' &&quot; >>$PGLOG 2>&1
echo &quot;ok&quot;
;;
  reload)
        echo -n &quot;Reload PostgreSQL: &quot;
        su - $PGUSER -c &quot;$PGCTL reload -D '$PGDATA' -s&quot;
        echo &quot;ok&quot;
        ;;
  status)
su - $PGUSER -c &quot;$PGCTL status -D '$PGDATA'&quot;
;;
  *)
# Print help
echo &quot;Usage: $0 {start|stop|restart|reload|status}&quot; 1>&2
exit 1
;;
esac
　　exit 0
　　5，注意上文提到的OOM_ADJ=-17 是为了逃避OOM自动封杀，OK！执行/etc/init.d/postgresql start stop restart 等等命令试试，大工告成！！
6,把安装目录中的conf配置文件复制到/etc/postgresql下面去，方便以后更改配置
  mkdir /etc/postgresql
  mv /usr/pgsql-9.1.3/date/*conf /etc/postgresql/
  cd /usr/pgsql-9.1.3/date
  su - psqlroot -c 'ln -s /etc/postgresql/pg_hba.conf pg_hba.conf'
  su - psqlroot -c 'ln -s /etc/postgresql/pg_ident.conf pg_ident.conf'
  su - psqlroot -c 'ln -s /etc/postgresql/postgresql.conf postgresql.conf'
　　第三阶段-优化：-----下回分解