openGauss训练营学习心得--单节点安装配置

很荣幸在 2021.9.11 和 2021.9.12 参加了第二期“8小时玩转opengauss训练营”活动，通过这次学习，让我对 opengauss 有了进一步的了解。并体验了集群单节点安装配置，现将整个安装过程整理如下：

一、硬件环境要求

注：如果仅作为功能测试情况下，内存4g已足够。

二、软件环境要求

三、软件依赖要求

四、关闭防火墙

systemctl disable firewalld.service
systemctl stop firewalld.service
setenforce=0
sed -i '/^SELINUX=/c’SELINUX=disabled /etc/selinux/config

五、修改时区

cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

六、关闭swap

swapoff -a

七、安装 python 3

wget https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tar.xz
tar -xvJf Python-3.6.6.tar.xz
cd Python-3.6.6
mkdir /usr/local/python3
./configure --enable-shared prefix=/usr/local/python3
make && make install
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
cp /usr/local/python3/lib/libpython3.6m.so.1.0 /usr/lib64/
python -V

八、安装

1. 下载安装包，解压
   tar -xvf MogDB-2.0.1-CentOS-all-x86_64.tar
   tar -xvf MogDB-2.0.1-CentOS-64bit-om.tar.gz
   tar -xvf MogDB-2.0.1-CentOS-64bit.tar.bz2

2. 创建 xml 配置文件

<DEVICELIST> 
    <!-- node1上的节点部署信息 --> 
    <DEVICE sn="1000001"> 
        <PARAM name="name" value="db01"/> 
        <PARAM name="azName" value="AZ1"/> 
        <PARAM name="azPriority" value="1"/> 
        <!-- 如果服务器只有一个网卡可用，将backIP1和sshIP1配置成同一个IP --> 
        <PARAM name="backIp1" value="172.31.0.101"/> 
        <PARAM name="sshIp1" value="172.31.0.101"/> 
         
    <!--dbnode--> 
    <PARAM name="dataNum" value="1"/> 
    <PARAM name="dataPortBase" value="26000"/> 
    <PARAM name="dataNode1" value="/mogdb/data/db1"/> 
    </DEVICE> 
</DEVICELIST> 

3. 安装

[root@db01 opt]# /opt/software/mogdb/script/gs_preinstall -U omm -G dbgrp -X /opt/software/mogdb/clusterconfig.xml
Parsing the configuration file.
Successfully parsed the configuration file.
Installing the tools on the local node.
Successfully installed the tools on the local node.
Setting pssh path
Successfully set core path.
Are you sure you want to create the user[omm] and create trust for it (yes/no)? yes
Please enter password for cluster user.
Password:
Please enter password for cluster user again.
Password:
Successfully created [omm] user on all nodes.
Preparing SSH service.
Successfully prepared SSH service.
Checking OS software.
Successfully check os software.
Checking OS version.
Successfully checked OS version.
Creating cluster’s path.
Successfully created cluster’s path.
Setting SCTP service.
Successfully set SCTP service.
Set and check OS parameter.
Setting OS parameters.
Successfully set OS parameters.
Warning: Installation environment contains some warning messages.
Please get more details by “/opt/software/mogdb/script/gs_checkos -i A -h db01 --detail”.
Set and check OS parameter completed.
Preparing CRON service.
Successfully prepared CRON service.
Setting user environmental variables.
Successfully set user environmental variables.
Setting the dynamic link library.
Successfully set the dynamic link library.
Setting Core file
Successfully set core path.
Setting pssh path
Successfully set pssh path.
Set ARM Optimization.
No need to set ARM Optimization.
Fixing server package owner.
Setting finish flag.
Successfully set finish flag.
Preinstallation succeeded.
[root@db01 opt]#

chmod -R 755 /opt/software/mogdb/script
chown -R omm:dbgrp /opt/software/mogdb/script
su - omm

[omm@db01 ~]$ /opt/software/mogdb/script/gs_install -X /opt/software/mogdb/clusterconfig.xml --gsinit-parameter="–locale=en_US.UTF-8" --gsinit-parameter="–encoding=UTF-8"
Parsing the configuration file.
Check preinstall on every node.
Successfully checked preinstall on every node.
Creating the backup directory.
Successfully created the backup directory.
begin deploy…
Installing the cluster.
begin prepare Install Cluster…
Checking the installation environment on all nodes.
begin install Cluster…
Installing applications on all nodes.
Successfully installed APP.
begin init Instance…
encrypt cipher and rand files for database.
Please enter password for database:
Please repeat for database:
begin to create CA cert files
The sslcert will be generated in /opt/mogdb/app/share/sslcert/om
Cluster installation is completed.
Configuring.
Deleting instances from all nodes.
Successfully deleted instances from all nodes.
Checking node configuration on all nodes.
Initializing instances on all nodes.
Updating instance configuration on all nodes.
Check consistence of memCheck and coresCheck on database nodes.
Configuring pg_hba on all nodes.
Configuration is completed.
Successfully started cluster.
Successfully installed application.
end deploy…
[omm@db01 ~]$

[omm@db01 ~]$ gs_om -t status --detail
[ Cluster State ]

cluster_state : Normal
redistributing : No
current_az : AZ_ALL

[ Datanode State ]

node node_ip instance state

1 db01 172.31.0.101 6001 /mogdb/data/db1 P Primary Normal
[omm@db01 ~]$