煙...
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2 server #
- os: centos7
- pgpool : 192.168.56.101
- db1: 192.168.56.102 --> master
- db2: 192.168.56.103 --> slave
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3 pgpool-II install #
192.168.56.101 覯 install
rpm -Uvh http://yum.postgresql.org/9.4/redhat/rhel-7-x86_64/pgdg-centos94-9.4-1.noarch.rpm yum update yum install pgpool-II-pg94
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4 postgresql9.4 install #
192.168.56.102, 192.168.56.103 覯 install
rpm -Uvh http://yum.postgresql.org/9.4/redhat/rhel-7-x86_64/pgdg-centos94-9.4-1.noarch.rpm yum update yum install postgresql94-server postgresql94-contrib /usr/pgsql-9.4/bin/postgresql94-setup initdb systemctl enable postgresql-9.4 systemctl start postgresql-9.4 firewall-cmd --permanent --add-port=5432/tcp firewall-cmd --permanent --add-port=80/tcp firewall-cmd --reload setsebool -P httpd_can_network_connect_db 1 su - postgres psql \password postgres
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5 master れ #
.conf 殊 襴襦 企
#locate pg_hba.conf #/var/lib/pgsql/9.4/data/pg_hba.conf cd /var/lib/pgsql/9.4/data/
pg_hba.conf殊 replication 覯ip 焔
{{
vi pg_hba.conf
}}}
{{
vi pg_hba.conf
}}}
host replication postgres 192.168.56.102/32 trust host replication postgres 192.168.56.103/32 trust host all all 192.168.56.101/32 trust host all all 192.168.56.1/32 trust
postgesql.conf
vi postgresql.conf
wal_level=host_standby #archive襦 れ覃 slave 蠏殊 max_wal_senders=10 #multi slave node れ listen_addresses = '*' archive_mode = on archive_command = 'cp %p /var/lib/pgsql/9.4/ARCHIVE/%f' # synchronous_standby_names = 'slave1' # 蠍磯逢朱 覲旧 蟆曙
archive 襦蠏 襴
mkdir /var/lib/pgsql/9.4/ARCHIVE
蟠 覲蟆
chown -R postgres.postgres /var/lib/pgsql
postgresql restart
su - postgres cd /usr/pgsql-9.4/bin ./pg_ctl -D /var/lib/pgsql/9.4/data stop -m fast ./pg_ctl start -l /var/lib/pgsql/9.4/data/pg_log/postgres.log -D /var/lib/pgsql/9.4/data
or
systemctl restart postgresql-9.4 systemctl stop postgresql-9.4
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6 slave れ #
master 覲旧
cd / systemctl stop postgresql-9.4 mv /var/lib/pgsql/9.4/data /var/lib/pgsql/9.4/data_old su - postgres pg_basebackup -h 192.168.56.102 -p 5432 -U postgres -D /var/lib/pgsql/9.4/data --xlog --checkpoint=fast --progress ls /var/lib/pgsql/9.4/data exit
postgesql.conf
cd /var/lib/pgsql/9.4/data/ vi postgresql.conf
wal_level = minimal hot_standby = on #archive_mode = on #archive_command = 'cp %p /var/lib/pgsql/9.4/ARCHIVE/%f'
recovery.conf
cd /var/lib/pgsql/9.4/data/ vi recovery.conf
restore_command = 'cp /var/lib/pgsql/9.4/ARCHIVE/%f %p' archive_cleanup_command = 'pg_archivecleanup /var/lib/pgsql/9.4/ARCHIVE/ %r' recovery_target_timeline = 'latest' standby_mode = on primary_conninfo = 'host=192.168.56.102 port=5432' #application_name=slave1' # 蠍磯逢朱 覲旧 蟆曙
蟠 覲蟆
chown -R postgres.postgres /var/lib/pgsql
postgresql restart
systemctl restart postgresql-9.4
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7 蠍壱 #
master 覯..
su - postgres psql -x -c "create table replication_test(id int)" psql -x -c "insert into replication_test(id) values(1)" psql -x -c "select * from replication_test"
slave 覯..
su - postgres psql -x -c "select * from replication_test"
master 覯..
su - postgres psql -x -c "Select * From pg_stat_replication"
鏤