使用py-mysql2pgsql 簡單實現mysql數據庫遷移到pgsql
參考：https://pypi.python.org/pypi/py-mysql2pgsql
公司的有個項目，原先用的是MySQL數據庫，現在要改成postgres。 於是搜了下，找到個py-mysql2pgsql工具。下面是筆記：
假設我們要把本機的mysql裏面的gitlab_ci_production、gitlabhq_production 這2個庫導入到本機的pgsql中（本地地址:192.168.2.100）。
1、安裝pgsql10
yum install https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-6-x86_64/pgdg-centos10-10-1.noarch.rpm
yum install postgresql10 postgresql10-server
yum install postgresql10-devel
service postgresql-10 initdb
chkconfig postgresql-10 on
service postgresql-10 start
修改綁定地址
vim /var/lib/pgsql/10/data/postgresql.conf
listen_addresses = ‘*‘
添加客戶端IP放行(生產環境不建議放行0.0.0.0/0 範圍太大了)
vim pg_hba.conf
host all all 0.0.0.0/0 md5
/etc/init.d/postgresql-10 restart
2、在pgsql裏面創建用戶及相關的庫：
su - postgres
psql
create user gitlab with password ‘123456‘ ;
create database gitlab_ci_production;
create database gitlabhq_production;
alter database gitlab_ci_production owner to gitlab;
alter database gitlabhq_production owner to gitlab;
echo "export PATH=/usr/pgsql-10/bin/:$PATH" >> /etc/profile
source /etc/profile
3、安裝py-mysql2pgsql
pip install py-mysql2pgsql
4、編寫導出文件的yml，如下：
[root@localhost ~]# cat convert.yml 內容如下：
# if a socket is specified we will use that
# if tcp is chosen you can use compression
mysql:
hostname: localhost
port: 3306
socket: /tmp/mysql.sock
username: root
password: 123456
database: gitlab_ci_production
compress: false
destination:
# if file is given, output goes to file, else postgres
file:
postgres:
hostname: 192.168.2.100
port: 5432
username: gitlab
password: 123456
database: gitlab_ci_production
[root@localhost ~]# cat convert2.yml 內容如下：
# if a socket is specified we will use that
# if tcp is chosen you can use compression
mysql:
hostname: localhost
port: 3306
socket: /tmp/mysql.sock
username: root
password: 123456
database: gitlabhq_production
compress: false
destination:
# if file is given, output goes to file, else postgres
file:
postgres:
hostname: 192.168.2.100
port: 5432
username: gitlab
password: 123456
database: gitlabhq_production
5、執行導入數據的命令：
py-mysql2pgsql -v -f convert.yml
py-mysql2pgsql -v -f convert2.yml
6、稍後去pgsql下驗證下數據是否正常
具體參考：https://pypi.python.org/pypi/py-mysql2pgsql
使用py-mysql2pgsql 簡單實現mysql數據庫遷移到pgsql