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pgloader 学习(九) pg 2 pg 使用with 参数控制同步逻辑

作者:互联网

pgloader 支持比较丰富的配置参数,同时默认数据在同步的时候是会进行索、schema
以及数据的同步对于实际我们可能存在需要进行控制,我们可以通过with 参数方便的处理

参考配置

 
load database
  from pgsql://postgres:dalong@postgres:5432/postgres
  into pgsql://postgres:dalong@postgres2:5432/postgres
  including only table names matching 'users','members' in schema 'public'
  ALTER TABLE NAMES MATCHING 'users' IN SCHEMA 'public' RENAME TO 'gitlab2_users'
  ALTER TABLE NAMES MATCHING 'members' IN SCHEMA 'public' RENAME TO 'gitlab2_members'
  with 
  create no indexes,
  no foreign keys;

完整docker-compose 运行说明

version: "3"
services:
  pgloader-pg:
    image: dimitri/pgloader
    volumes: 
    - "./pgloader-config:/loader"
    command: pgloader /loader/pg/pg.load
  postgres:
    image: postgres:9.6.11
    ports:
    - "5432:5432"
    environment:
    - "POSTGRES_PASSWORD:dalong"
  postgres2:
    image: postgres:9.6.11
    ports:
    - "5433:5432"
    environment:
    - "POSTGRES_PASSWORD:dalong"
   
导出表数据:
pg_dump -h hostip -p 5432 -U postgres -t members -d postgres > members.sql
pg_dump -h hostip -p 5432 -U postgres -t users -d postgres > users.sql
导入表数据:
psql -h 127.0.0.1 -U postgres -p 5432 -d postgres < users.sql
psql -h 127.0.0.1 -U postgres -p 5432 -d postgres < members.sql
运行数据导入:
docker-compose up pgloader-pg
 
pgloader-pg_1 | WARNING:
pgloader-pg_1 | Couldn't re-execute SBCL with proper personality flags (/proc isn't mounted? setuid?)
pgloader-pg_1 | Trying to continue anyway.
pgloader-pg_1 | 2019-06-27T04:43:52.045000Z LOG pgloader version "3.6.2~devel"
pgloader-pg_1 | 2019-06-27T04:43:52.150000Z LOG Migrating from #<PGSQL-CONNECTION pgsql://postgres@postgres:5432/postgres {10070D34D3}>
pgloader-pg_1 | 2019-06-27T04:43:52.151000Z LOG Migrating into #<PGSQL-CONNECTION pgsql://postgres@postgres2:5432/postgres {10070D4B63}>
pgloader-pg_1 | 2019-06-27T04:43:52.882000Z LOG report summary reset
pgloader-pg_1 | table name errors rows bytes total time
pgloader-pg_1 | ------------------------ --------- --------- --------- --------------
pgloader-pg_1 | fetch meta data 0 2 0.061s
pgloader-pg_1 | Create Schemas 0 0 0.000s
pgloader-pg_1 | Create SQL Types 0 0 0.006s
pgloader-pg_1 | Create tables 0 4 0.035s
pgloader-pg_1 | Set Table OIDs 0 2 0.000s
pgloader-pg_1 | ------------------------ --------- --------- --------- --------------
pgloader-pg_1 | "public".gitlab2_members 0 27629 3.1 MB 0.513s
pgloader-pg_1 | "public".gitlab2_users 0 4153 2.2 MB 0.392s
pgloader-pg_1 | ------------------------ --------- --------- --------- --------------
pgloader-pg_1 | COPY Threads Completion 0 4 0.506s
pgloader-pg_1 | Reset Sequences 0 2 0.022s
pgloader-pg_1 | Create Triggers 0 0 0.001s
pgloader-pg_1 | Install Comments 0 0 0.000s
pgloader-pg_1 | ------------------------ --------- --------- --------- --------------
pgloader-pg_1 | Total import time ? 31782 5.3 MB 0.529s
pgloader-pg2pg_pgloader-pg_1 exited with code 0

说明

同时可以也可以配置一些其他参数,比如schema only , data only, 还是很方便的

参考资料

https://github.com/rongfengliang/pgloader-gitlab-pg2pg
https://pgloader.readthedocs.io/en/latest/ref/pgsql.html

标签:5432,同步,users,pgloader,pg,members,postgres
来源: https://www.cnblogs.com/rongfengliang/p/11096359.html