CentOS下安装PostgreSQL
CentOS下安装PostgreSQL
- 安装
# yum install postgresql postgresql-libs postgresql-server
[root@dev ~]# service postgresql status
postmaster is stopped
[root@dev ~]# service postgresql start
Initializing database: [ OK ]
Starting postgresql service: [ OK ]
postmaster is stopped
[root@dev ~]# service postgresql start
Initializing database: [ OK ]
Starting postgresql service: [ OK ]
- 设为开机启动
[root@dev ~]# chkconfig postgresql on
[root@dev ~]# chkconfig --list postgresql
postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@dev ~]# chkconfig --list postgresql
postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off
- 配置参数
[root@dev ~]# vim /var/lib/pgsql/data/pg_hba.conf
# "local" is for Unix domain socket connections only
#local all all ident sameuser
local all all trust
# IPv4 local connections:
#host all all 127.0.0.1/32 ident sameuser
host all all 127.0.0.1/32 md5
host all all 192.168.28.3/32 md5 #必须有后面那个，那个是掩码，否则总报pg_hba.conf语法错
[root@dev ~]# su - postgres
-bash-3.2$ pg_ctl reload
postmaster signaled
[root@dev ~]# vim /var/lib/pgsql/data/postgresql.conf
listen_addresses ='*'
[root@dev ~]# su - postgres
-bash-3.2$ pg_ctl reload
postmaster signaled
# "local" is for Unix domain socket connections only
#local all all ident sameuser
local all all trust
# IPv4 local connections:
#host all all 127.0.0.1/32 ident sameuser
host all all 127.0.0.1/32 md5
host all all 192.168.28.3/32 md5 #必须有后面那个，那个是掩码，否则总报pg_hba.conf语法错
[root@dev ~]# su - postgres
-bash-3.2$ pg_ctl reload
postmaster signaled
[root@dev ~]# vim /var/lib/pgsql/data/postgresql.conf
listen_addresses ='*'
[root@dev ~]# su - postgres
-bash-3.2$ pg_ctl reload
postmaster signaled
- 常用命令
# psql -l 列出所有数据库 # psql
=> \l 列出所有数据库
=> \c cake 连接到cake数据库
=> \dt 列出所有tables
=> \d shift 查看shift表结构
=> \di 列出所有indexes
=> \d shift_pkey 列出所有index: shift_pkey
=> \l 列出所有数据库
=> \c cake 连接到cake数据库
=> \dt 列出所有tables
=> \d shift 查看shift表结构
=> \di 列出所有indexes
=> \d shift_pkey 列出所有index: shift_pkey
- 测试java代码
1 import java.sql.Connection;
2 import java.sql.DriverManager;
3 import java.sql.ResultSet;
4 import java.sql.Statement;
5
6 publicclass PostgresqlTest {
7
8 /**
9 * @param args
10 */
11 publicstaticvoid main(String[] args) {
12 try {
13 Class.forName("org.postgresql.Driver").newInstance();
14 String connectUrl ="jdbc:postgresql://192.168.250.231:5432/poem";
15 Connection conn = DriverManager.getConnection(connectUrl,
16 "poem", "poem");
17 Statement st = conn.createStatement();
18 String sql ="select 1;";
19 ResultSet rs = st.executeQuery(sql);
20 while (rs.next()) {
21 System.out.println(rs.getInt(1));
22 }
23 rs.close();
24 st.close();
25 conn.close();
26 } catch (Exception e) {
27 e.printStackTrace();
28 }
29 }
30
31 }
32
2 import java.sql.DriverManager;
3 import java.sql.ResultSet;
4 import java.sql.Statement;
5
6 publicclass PostgresqlTest {
7
8 /**
9 * @param args
10 */
11 publicstaticvoid main(String[] args) {
12 try {
13 Class.forName("org.postgresql.Driver").newInstance();
14 String connectUrl ="jdbc:postgresql://192.168.250.231:5432/poem";
15 Connection conn = DriverManager.getConnection(connectUrl,
16 "poem", "poem");
17 Statement st = conn.createStatement();
18 String sql ="select 1;";
19 ResultSet rs = st.executeQuery(sql);
20 while (rs.next()) {
21 System.out.println(rs.getInt(1));
22 }
23 rs.close();
24 st.close();
25 conn.close();
26 } catch (Exception e) {
27 e.printStackTrace();
28 }
29 }
30
31 }
32
PostgreSQL 的详细介绍：请点这里
PostgreSQL 的下载地址：请点这里
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