postgres主从基于流复制

yum install gcc readline-devel zlib-devel
cd /tmp/
wget https://ftp.postgresql.org/pub/source/v9.5.3/postgresql-9.5.3.tar.gz
tar -xf postgresql-9.5.3.tar.gz
useradd postgres
./configure --prefix=/usr/local/postgresql
make -j2
make install
chown -R postgres:postgres /usr/local/postgresql/

1、切换用户
su - postgres
2、配置环境变量
vi .bash_profile

[postgres@localhost ~]$ cat .bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
	. ~/.bashrc
fi

# User specific environment and startup programs
PGHOME=/usr/local/postgresql
export PGHOME
PGDATA=/usr/local/postgresql/data
export PGDATA
PATH=$PATH:$HOME/.local/bin:$HOME/bin:$PGHOME/bin

export PATH
3、使上述环境立即变量生效
source .bash_profile
4、验证环境变量是否配置成功(查询postgres数据库版本号)
[postgres@localhost ~]$ psql -V
psql (PostgreSQL) 9.5.3
4、执行初始化：
initdb

仅供参考，以下参数请根据需求进行合理配置修改
listen_addresses = '*'
port = 5432
wal_level = logical
archive_mode = on
max_wal_senders = 10
hot_standby = on
log_destination = 'csvlog'
logging_collector = on
log_directory = 'pg_log'
log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
log_rotation_age = 1d
log_rotation_size = 20MB

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             postgres                         trust
host    all             all             0.0.0.0/0        md5
# IPv4 local connections:
host    all             postgres        127.0.0.1/32            trust
# IPv6 local connections:
host    all             postgres             ::1/128            trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     replicator                              trust
host    replication     replicator     0.0.0.0/0              md5
host    replication     postgres        127.0.0.1/32            trust
#host    replication     postgres        ::1/128                trust

pg_ctl -D /usr/local/postgresql/data start

验证主库是否正常
执行创建一个测试库sql语句，用于测试主库
create database test;
下图是我已经执行过的

执行sql语句创建基于流复制的用户，后面会用到，这里所创建的replicator用户名注意和上文的pg_hba.conf配置文件中的用户保持一致
create user replicator replication login encrypted password '1qaz2wsx';

select * from pg_create_physical_replication_slot('pgsql95_132');
select * from pg_create_physical_replication_slot('pgsql95_134');

进入初始化目录
cd /usr/local/postgresql/data/
清空当前目录下的所有文件
rm -rf *

./pg_basebackup -h 192.168.216.130 -D /usr/local/postgresql/data -U replicator -c fast -X stream -v -P -R

[postgres@localhost data]$ cat recovery.conf 
standby_mode = 'on'
recovery_target_timeline = 'latest'
primary_conninfo = 'user=replicator password=1qaz2wsx host=192.168.216.130 port=5432 sslmode=disable sslcompression=1'
primary_slot_name = 'pgsql95_132'

[postgres@localhost data]$ cat recovery.conf 
standby_mode = 'on'
recovery_target_timeline = 'latest'
primary_conninfo = 'user=replicator password=1qaz2wsx host=192.168.216.130 port=5432 sslmode=disable sslcompression=1'
primary_slot_name = 'pgsql95_134'

pg_ctl -D /usr/local/postgresql/data start