前言
巧妙利用go语言自制openGauss安装二进制程序，经测试15s即可安装完成
一、安装go语言环境
1. 下载解压go
[root@node1 ~]# wget https://golang.google.cn/dl/go1.19.1.linux-amd64.tar.gz
[root@node1 ~]# tar -zxvf go1.19.1.linux-amd64.tar.gz -C /usr/local
2. 添加环境变量
export PATH=$PATH:/usr/local/go/bin
3. 测试运行
package main import fmt func main(){ fmt.Println("hello,world！") }
[root@node1 ~]# go run test.go hello,world！
二、 openGauss安装 （15s安装完成）
1. 源代码
[root@node1 ~]# cat gaussdb.go package main import ( "fmt" "io/ioutil" "os/exec" ) func main() { cmd := exec.Command("/bin/bash", "-c", `useradd omm ;echo "Enmo@123" | passwd --stdin omm > /dev/null ;mkdir -p /opt/mogdb/software;chown -R omm:omm /opt/;tar -xf openGauss-3.1.0-CentOS-64bit.tar.bz2 -C /opt/mogdb/software; su - omm -c "echo 'export GAUSSHOME=/opt/mogdb/software' >> /home/omm/.bashrc ;echo 'export PATH=\$GAUSSHOME/bin:\$PATH' >> /home/omm/.bashrc ;echo 'export LD_LIBRARY_PATH=\$GAUSSHOME/lib:\$LD_LIBRARY_PATH' >> /home/omm/.bashrc;source /home/omm/.bashrc;gs_initdb --pgdata=/opt/mogdb/data --nodename=primary --pwpasswd=Enmo@123 --encoding=UTF-8 --locale=en_US.UTF-8 > /dev/null ;echo \"port=26000\" >> /opt/mogdb/data/postgresql.conf;echo \"listen_addresses = '0.0.0.0'\" >> /opt/mogdb/data/postgresql.conf;echo \"password_encryption_type = 0\" >> /opt/mogdb/data/postgresql.conf;echo \"log_directory = 'pg_log'\" >> /opt/mogdb/data/postgresql.conf;echo \"remote_read_mode=non_authentication\" >> /opt/mogdb/data/postgresql.conf;echo \"host all all 0.0.0.0/0 md5\" >> /opt/mogdb/data/pg_hba.conf;gs_ctl start -D /opt/mogdb/data > /dev/null ;gsql -d postgres -p 26000 -c'select version();select pg_postmaster_start_time();';echo -e 'data_user is omm ! \ndata_port is 26000 ! \ndata_path is /opt/mogdb/data ! \ndata_soft is /opt/mogdb/software !'"`) // cmd := exec.Command("/bin/bash", "-c", `df -h;ls`) //创建获取命令输出管道 stdout, err := cmd.StdoutPipe() if err != nil { fmt.Printf("Error:can not obtain stdout pipe for command:%s\n", err) return } //执行命令 if err := cmd.Start(); err != nil { fmt.Println("Error:The command is err,", err) return } //读取所有输出 bytes, err := ioutil.ReadAll(stdout) if err != nil { fmt.Println("ReadAll Stdout:", err.Error()) return } if err := cmd.Wait(); err != nil { fmt.Println("wait:", err.Error()) return } fmt.Printf("stdout:\n\n %s", bytes) }
2. go run 测试运行
- 准备安装包
[root@node1 ~]# ls openGauss-3.1.0-CentOS-64bit.tar.bz2 gaussdb.go gaussdb.go openGauss-3.1.0-CentOS-64bit.tar.bz2
- go run
[root@node1 ~]# go run gaussdb.go stdout: version ------------------------------------------------------------------------------------------------------------------------------------------------------ (openGauss 3.1.0 build 2c0ccaf9) compiled at 2022-09-25 19:32:58 commit 0 last mr on x86_64-unknown-linux-gnu, compiled by g++ (GCC) 7.3.0, 64-bit (1 row) pg_postmaster_start_time ------------------------------- 2022-09-28 13:38:28.550462+08 (1 row) data_user is omm ! data_port is 26000 ! data_path is /opt/mogdb/data ! data_soft is /opt/mogdb/software !
- 连接测试
[root@node1 ~]# su - omm Last login: Wed Sep 28 13:39:38 CST 2022 [omm@node1 ~]$ gsql -d postgres -p26000 -r gsql ((openGauss 3.1.0 build 2c0ccaf9) compiled at 2022-09-25 19:32:58 commit 0 last mr ) Non-SSL connection (SSL connection is recommended when requiring high-security) Type "help" for help. openGauss=# select version(); version ------------------------------------------------------------------------------------------------------------------------------------------------------ (openGauss 3.1.0 build 2c0ccaf9) compiled at 2022-09-25 19:32:58 commit 0 last mr on x86_64-unknown-linux-gnu, compiled by g++ (GCC) 7.3.0, 64-bit (1 row) openGauss=# \q [omm@node1 ~]$ logout
- go build 二进制
[root@node1 ~]# go build gaussdb.go [root@node1 ~]# ls gaussdb openGauss-3.1.0-CentOS-64bit.tar.bz2 gaussdb.go gaussdb gaussdb.go openGauss-3.1.0-CentOS-64bit.tar.bz2
- 清理环境
[root@node1 ~]# cat a.sh pkill -9 gaussdb rm -rf /opt/mogdb/* userdel -r omm [root@node1 ~]# sh a.sh
- 安装
[root@node1 ~]# date;./gaussdb;date Wed Sep 28 13:53:12 CST 2022 stdout: version ------------------------------------------------------------------------------------------------------------------------------------------------------ (openGauss 3.1.0 build 2c0ccaf9) compiled at 2022-09-25 19:32:58 commit 0 last mr on x86_64-unknown-linux-gnu, compiled by g++ (GCC) 7.3.0, 64-bit (1 row) pg_postmaster_start_time ------------------------------- 2022-09-28 13:53:27.034021+08 (1 row) data_user is omm ! data_port is 26000 ! data_path is /opt/mogdb/data ! data_soft is /opt/mogdb/software ! Wed Sep 28 13:53:27 CST 2022
- 连接测试
[root@node1 ~]# su - omm Last login: Wed Sep 28 13:53:19 CST 2022 [omm@node1 ~]$ gsql -d postgres -p26000 -r gsql ((openGauss 3.1.0 build 2c0ccaf9) compiled at 2022-09-25 19:32:58 commit 0 last mr ) Non-SSL connection (SSL connection is recommended when requiring high-security) Type "help" for help. openGauss=# select version(); version ------------------------------------------------------------------------------------------------------------------------------------------------------ (openGauss 3.1.0 build 2c0ccaf9) compiled at 2022-09-25 19:32:58 commit 0 last mr on x86_64-unknown-linux-gnu, compiled by g++ (GCC) 7.3.0, 64-bit (1 row) openGauss=# \q
总结
复杂好用的程序往往都是简单的逻辑一步一步累加的，通过考虑多样的场景，多样的使用环境，使代码趋于完善。
