os: centos 7.4.1708es: 7.6.2三节点的es,参考<<es 集群三节点安装>>192.168.56.121n1192.168.56.122n2192.168.56.123n3number_of_shards 是指索引要做多少个分片，只能在创建索引时指定，后期无法修改。number_of_replicas 是指每个分片有多少个副本，后期可以动态修改pr

os: centos 7.4db: postgresql 9.6BenchmarkSQL 有一些依赖，先处理好依赖参考了德哥的 https://github.com/digoal/blog/blob/master/201701/20170125_01.md安装 oracle JDK默认的是 OpenJDK，替换为 oracle JDK# /usr/bin/java -versiono...

os: centos 7.4db: mysql 8mysql-community-client# MySQL客户端mysql-community-common# 服务端和客户端常用库文件mysql-community-devel# 客户端开发用的头文件及库mysql-community-embedded-compat # 嵌入式版本的头文件与库mysql-community-libs# MySQL

orghttps://www.mongodb.com/https://www.mongodb.com/download-center?jmp=tutorials#communityhttps://docs.mongodb.com/http://www.mongoing.com/

os: centos 7.4.1708es: 7.6.2ide: dbeaver 6.2.3通过 dbeaver 配置 jdbc 连接 es时报错 current license is non-compliant for [jdbc]在官网 https://www.elastic.co/cn/subscriptions 搜索后发现需要白金级别查看服务器es的license信息，发现 “type”

os: centos 7.4.1708db: postgresql 11.2参考《centos 7.x 安装 yugabytedb 的优化设置》设置好centos 7.4pythonyugabytedb 2.5 需要 python 环境，该版本 python2 或者 python3 都可以python2 安装如下# yum install postgresql11*# systemctl enab

os: centos 7.x安装python3，如下:# wget -c https://www.python.org/ftp/python/3.8.2/Python-3.8.2.tar.xz# ./configure# make# make install创建软链接# ls -l /usr/bin/pythonlrwxrwxrwx. 1 root root 7 Apr 282019 /usr/b

centos 6.x 的yum使用的是python 2.6，现在需要更新系统默认python为python 2.7安装 python2.7# yum install python27-pythonpython27-python-devel查询 python2.7 的安装位置# rpm -ql python27-python/opt/rh/python27/root/u...

os: ubuntu 16.04db: mysql 5.7.252019-03-06T03:27:26.404335Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documenta..

mysql 的 show create table 非常棒，下面转载 https://blog.csdn.net/xiaofengtoo/article/details/84395199CREATE OR REPLACE FUNCTION findattname(namespace character varying,tablename character varying,...