在CentOS中部署多节点Citus集群的详细步骤

前言

本文主要介绍了关于CentOS中部署多节点 Citus集群的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。

1、在所有节点执行以下步骤

Step 01 添加Citus Repostory

1 2	`# Add Citus repository for package manager` `curl https://install.citusdata.com/community/rpm.sh \|` `sudo` `bash`

Step 02 安装Citus并且初始化DB

									# install PostgreSQL with Citus extension

									sudo yum install -y citus72_10

									# initialize system database (using RHEL 6 vs 7 method as necessary)

									sudo service postgresql-10 initdb || sudo /usr/pgsql-10/bin/postgresql-10-setup initdb

									# preload citus extension

									echo \"shared_preload_libraries = \'citus\'\" | sudo tee -a /var/lib/pgsql/10/data/postgresql.conf

Step 03 配置postgresql.conf

1	`sudo` `vi` `/var/lib/pgsql/10/data/postgresql.conf`

1 2	`# Uncomment listen_addresses for the changes to take effect` `listen_addresses =` `\'*\'`

Step 04 配置pg_hba.conf

1	`sudo` `vi` `/var/lib/pgsql/10/data/pg_hba.conf`

local all all peer

local replication all peer

host all all 192.168.99.1/24 trust

host all all 0.0.0.0/0 md5

Step 05 配置防火墙

查看

1	`firewall-cmd --zone=public --query-port=5432/tcp`

添加5432端口（–permanent永久生效，没有此参数重启后失效）

1	`firewall-cmd --zone=public --add-port=5432/tcp` `--permanent`

重新载入

1	`firewall-cmd --reload`

Step 06 启动服务

# start the db server

sudo service postgresql-10 restart

# and make it start automatically when computer does

sudo chkconfig postgresql-10 on

Step 07 给需要的数据库安装Citus扩展

1	`sudo` `-i -u postgres psql -c` `\"CREATE EXTENSION citus;\"`

Step 08 设置密码

postgres=# \\password postgres #给postgres用户设置密码

Enter new password:

Enter it again:

2、在coordinator节点额外执行以下步骤

Step 01 添加worker节点信息

添加worker节点的IP地址（或者DNS名称）和端口号到pg_dist_node表。

1 2	`sudo` `-i -u postgres psql -c` `\"SELECT * from master_add_node(\'192.168.99.101\', 5432);\"` `sudo` `-i -u postgres psql -c` `\"SELECT * from master_add_node(\'192.168.99.102\', 5432);\"`