CentOS7 yum PostgreSQL(11) 并启用 python3编写存储过程(Python3
CentOS7 yum PostgreSQL(11) 并启用 python3编写存储过程(Python3.6)
一、安装python3.6
- 下载Python3.6.6.tgz 至 /tmp 下
[root@localhost tmp]# wget -c https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tgz
- 解压 Python3.6.6.tgz
[root@localhost tmp]# tar -zvxf Python-3.6.6.tgz
- 安装需要的依赖包(dependence)
[root@localhost tmp]# yum install gcc openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel -y
- 编译安装
[root@localhost tmp]# cd Python-3.6.6/
[root@localhost Python-3.6.6]# ./configure --prefix=/usr/local/Python36 --enable-shared
[root@localhost Python-3.6.6]# make && make install
………………………………省略………………………………
Looking in links: /tmp/tmpjbfza4ut
Collecting setuptools
Collecting pip
Installing collected packages: setuptools, pip
Successfully installed pip-10.0.1 setuptools-39.0.1
- 将python3.6 与pip3 软链接到/usr/local/bin目录下
[root@localhost bin]# ln -s /usr/local/Python36/bin/python3.6 /usr/local/bin/python3
[root@localhost bin]# ln -s /usr/local/Python36/bin/pip3 /usr/local/bin/pip3
- 添加动态库配置文件
[root@localhost ~]# python3
python3: error while loading shared libraries: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory <=== 执行python3 报错
[root@localhost ~]# ldd /usr/local/bin/python3
linux-vdso.so.1 => (0x00007ffd451fc000)
libpython3.6m.so.1.0 => not found <=== 此动态文件未找到
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f725d3d5000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f725d1d1000)
libutil.so.1 => /lib64/libutil.so.1 (0x00007f725cfce000)
libm.so.6 => /lib64/libm.so.6 (0x00007f725cccc000)
libc.so.6 => /lib64/libc.so.6 (0x00007f725c8ff000)
/lib64/ld-linux-x86-64.so.2 (0x00007f725d5f1000)
[root@localhost ~]# echo /usr/local/Python36/lib/ >> /etc/ld.so.conf.d/python3.6.conf
[root@localhost ~]# ldconfig
[root@localhost ~]# python3
Python 3.6.6 (default, May 17 2019, 14:04:59)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()
二、安装PG11
- PostgreSQL官网
下载PG的repo包
[root@localhost tmp]# wget -c https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
--2019-05-17 13:43:55-- https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
Resolving download.postgresql.org (download.postgresql.org)... 72.32.157.246, 87.238.57.227, 204.145.124.244, ...
Connecting to download.postgresql.org (download.postgresql.org)|72.32.157.246|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5720 (5.6K) [application/x-redhat-package-manager]
Saving to: ‘pgdg-redhat-repo-latest.noarch.rpm’
100%[=======================================================================================>] 5,720 5.66KB/s in 1.0s
2019-05-17 13:43:57 (5.66 KB/s) - ‘pgdg-redhat-repo-latest.noarch.rpm’ saved [5720/5720]
- 安装PostgreSQL源
[root@localhost tmp]# yum install pgdg-redhat-repo-latest.noarch.rpm -y
- 安装PostgresSQL11 客户端与服务端
[root@localhost ~]# yum install postgresql11 postgresql11-server -y
PostgreSQL版本与其对应支持的python3版本
| PostgreSQL Version | Python Version |
|---|---|
| 9.X | 3.3 |
| 10.X | 3.4 |
| 11.X | 3.6 |
- 将python3.6对应的plpython3.so 文件添加到/usr/pgsql-11/lib/中
[root@localhost ~]# wget -c https://gitee.com/CodeForLive/PGEnablePlpython3/raw/master/py36/plpython3.so -C /usr/pgsql-11/lib
plpython3.so 100% 143KB 9.9MB/s 00:00
[root@localhost ~]# chmod 755 /usr/pgsql-11/lib/plpython3.so
- 初始化数据库
[root@localhost ~]# /usr/pgsql-11/bin/postgresql-11-setup initdb
数据库文件一般在/var/lib/pgsql/11/目录下
6. 启动PostgreSQL服务
[root@localhost ~]# systemctl start postgresql-11 && systemctl status postgresql-11
● postgresql-11.service - PostgreSQL 11 database server
Loaded: loaded (/usr/lib/systemd/system/postgresql-11.service; disabled; vendor preset: disabled)
Active: active (running) since Fri 2019-05-17 14:27:53 CST; 14ms ago
Docs: https://www.postgresql.org/docs/11/static/
Process: 14099 ExecStartPre=/usr/pgsql-11/bin/postgresql-11-check-db-dir ${PGDATA} (code=exited, status=0/SUCCESS)
Main PID: 14106 (postmaster)
Tasks: 8
CGroup: /system.slice/postgresql-11.service
├─14106 /usr/pgsql-11/bin/postmaster -D /var/lib/pgsql/11/data/
├─14107 postgres: logger
├─14109 postgres: checkpointer
├─14110 postgres: background writer
├─14111 postgres: walwriter
├─14112 postgres: autovacuum launcher
├─14113 postgres: stats collector
└─14114 postgres: logical replication launcher
May 17 14:27:53 localhost.localdomain systemd[1]: Starting PostgreSQL 11 database server...
May 17 14:27:53 localhost.localdomain postmaster[14106]: 2019-05-17 14:27:53.839 CST [14106] LOG: listening on IPv6 addr... 5432
May 17 14:27:53 localhost.localdomain postmaster[14106]: 2019-05-17 14:27:53.839 CST [14106] LOG: listening on IPv4 addr... 5432
May 17 14:27:53 localhost.localdomain postmaster[14106]: 2019-05-17 14:27:53.841 CST [14106] LOG: listening on Unix sock...5432"
May 17 14:27:53 localhost.localdomain postmaster[14106]: 2019-05-17 14:27:53.843 CST [14106] LOG: listening on Unix sock...5432"
May 17 14:27:53 localhost.localdomain postmaster[14106]: 2019-05-17 14:27:53.860 CST [14106] LOG: redirecting log output...ocess
May 17 14:27:53 localhost.localdomain postmaster[14106]: 2019-05-17 14:27:53.860 CST [14106] HINT: Future log output wil...log".
May 17 14:27:53 localhost.localdomain systemd[1]: Started PostgreSQL 11 database server.
Hint: Some lines were ellipsized, use -l to show in full.
- 设置为开机启动
[root@localhost ~]# systemctl enable postgresql-11
Created symlink from /etc/systemd/system/multi-user.target.wants/postgresql-11.service to /usr/lib/systemd/system/postgresql-11.service.
- 登陆postgreSQl 并修改密码
[root@localhost ~]# su - postgres
-bash-4.2$ psql
psql (11.3)
Type "help" for help.
postgres=# \password
Enter new password:
Enter it again:
- 查看plpython3 是否可以使用
postgres=# create language plpython3u;
CREATE LANGUAGE
postgres=# CREATE FUNCTION pymax (a integer, b integer)
postgres-# RETURNS integer
postgres-# AS $$
postgres$# if a > b:
postgres$# return a
postgres$# return b
postgres$# $$ LANGUAGE plpython3u;
CREATE FUNCTION
postgres=# select pymax(20,12);
pymax
-------
20
(1 row)
postgres=# select pymax(10,12);
pymax
-------
12
(1 row)
- 设置远程连接
- 修改postgresql.conf 文件
[root@localhost ~]# vim /var/lib/pgsql/11/data/postgresql.conf 59 listen_addresses = '*' # what IP address(es) to listen on; 60 # comma-separated list of addresses; 61 # defaults to 'localhost'; use '*' for all 62 # (change requires restart) 63 #port = 5432 # (change requires restart) 64 max_connections = 100 # (change requires restart) 65 #superuser_reserved_connections = 3 # (change requires restart)- 修改pg_hba.conf文件 最后一行添加
[root@localhost ~]# vim /var/lib/pgsql/11/data/pg_hba.conf host all all 0.0.0.0/0 md5- 打开防火墙5432端口并重启postgresql服务
[root@localhost ~]# vim /var/lib/pgsql/11/data/postgresql.conf [root@localhost ~]# vim /var/lib/pgsql/11/data/pg_hba.conf [root@localhost ~]# firewall-cmd --zone=public --add-port=5432/tcp --permanent success [root@localhost ~]# firewall-cmd --reload success- 重启postgresql-11 服务并测试
[root@localhost ~]# systemctl restart postgresql-11