Sunday Blog

人生是一场刻意练习

Ubuntu 22.04 安装 Wireguard

Ubuntu 22.04 Install Wireguard

环境 wireguard服务器： 外网 网卡接口：ens192 IP: 139.38.120.136 内网 网卡接口：ens160 IP: 192.168.77.3 wireguard网段： 10.78.0.0/24 注：不可与双方内网网段重

Posted by BlueFat on Sunday, December 31, 2023

Sftp 多用户不同权限配置

Sftp Mutil Directory Permissions

sftp 多用户，多目录不同权限设置 sftp配置多用户, 设置权限只能访问自己的目录, 显示家目录为/ OS: Centos7 显示路径为/ useradd -g 用户组 -d 指定家目录 -s shell

Posted by BlueFat on Saturday, December 30, 2023

CentOS 7.4 安装 Cobbler 实现自动化安装 Ubuntu 18.04

Cobbler + Kickstart

https://cobbler.github.io 环境准备 OS: CentOS 7.6 IP: 192.168.1.22 关闭防火墙 sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config setenforce 0 systemctl stop firewalld.service systemctl disable firewalld.service 阿里云源 curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo 安装Cobbler 安装cobbler yum install cobbler cobbler-web dhcp debmirror pykickstart fence-agents -y 开机启动

Posted by BlueFat on Wednesday, May 24, 2023

Java Redis Exception Connection Reset by Peer

Java Redis Exception Connection Reset by Peer

报错信息 2023-05-18 14:18:01.916 ERROR 109202 --- [pool-6-thread-1] o.s.s.s.TaskUtils$LoggingErrorHandler : Unexpected error occurred in scheduled task. org.springframework.data.redis.RedisSystemException: Redis exception; nested exception is io.lettuce.core.RedisException: io.netty.channel.unix.Errors$NativeIoException: readAddress(..) failed: Connection reset by peer at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:74) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:268) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.convertLettuceAccessException(LettuceSetCommands.java:520) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.sMembers(LettuceSetCommands.java:245) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.DefaultedRedisConnection.sMembers(DefaultedRedisConnection.java:607) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.DefaultSetOperations.lambda$members$6(DefaultSetOperations.java:158) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.DefaultSetOperations.members(DefaultSetOperations.java:158)

Posted by BlueFat on Tuesday, May 23, 2023

iptables NAT转发共享上网

iptables nat forward share network

原文：http://wwdhks.blog.51cto.com/839773/1154032 iptables是一个Linux下优秀的nat+

Posted by BlueFat on Tuesday, May 23, 2023

ESXi 6.6 固态硬盘阵列不识别为SSD类型解决

Esxi 6 Ssd Arry Identification

ESXi开启SSH，登陆ESXI主机 # 列出储存清单 esxcli storage nmp device list # WEB界面 - 存储 - 设备 查看 naa.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx # 设置为SSD类型 esxcli storage nmp satp rule add -s VMW_SATP_LOCAL --device naa.644a84200b26dc0023dda3c80dcac2xx --option="enable_ssd" 重启ESX

Posted by BlueFat on Friday, March 24, 2023

Dell R620 R630 R720 R730 通过IPMI手动控制服务器风扇转速

Dell Server Ipmi Fan Offset

测试IPMI的连接性： ipmitool -I lanplus -H 192.168.1.149 -U root -P root raw 将风扇设置为手动调节转速 ipmitool -I lanplus -H 192.168.1.149 -U root -P root-passwd raw 0x30 0x30 0x01 0x00 手动设置风扇转速（最后一字节指示风扇转速的百分

Posted by BlueFat on Thursday, March 23, 2023

Ubuntu 20.04 Netplan Dns

Ubuntu 20.04 Netplan Dns

如果在netplan设置dns了，但是实际验证中发现无效。 例如通过nslookup去解析域名，显示的是 dns服务器是127.0.0.53 但是

Posted by BlueFat on Thursday, March 23, 2023

Ubuntu 22.04 设置静态IP

ubuntu 22.04 setting static ip

cat /etc/netplan/00-installer-config.yaml # This is the network config written by 'subiquity' network: ethernets: ens160: dhcp4: false addresses: - 192.168.77.3/24 ens192: dhcp4: false addresses: - 119.38.120.107/27 nameservers: addresses: - 223.5.5.5 routes: - to: default via: 119.38.120.1 version: 2 netplan apply

Posted by BlueFat on Thursday, March 23, 2023

Ubuntu UFW防火墙启用NAT共享上网

Ufw firewall enable nat shared Internet access

环境信息 内网 网卡接口: ens160 网段: 192.168.77.0/24 IP: 192.168.77.1 外网 网卡接口: ens160 打开内核转发 echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf sysctl -p 启动nat转发测试 非持久化 # 启动 # 适用动态IP 自动转成网卡I

Posted by BlueFat on Thursday, March 23, 2023

sed引用变量及追加文件内容到文件首部

Sed Head File

只能将昨天的日志文件内容追加到今天的日志文件的首部，从第 1 行后开始，而不是完全从第 1 行开始。 # 表示将 yesterday.log 文件中的内容添加到 today 文件中，且从第一行

Posted by BlueFat on Friday, December 23, 2022

RocketMQ deleteSubscriptionGroup 不删除 consumer offset 解决

Rocketmq Delete Consumer Group

https://github.com/apache/rocketmq/issues/3660 使用下面命令，删除订阅组成功但在rocketmq-dashboard 还能看到订阅组信息，只不过会显示1970-01-01 08:00:00，

Posted by BlueFat on Tuesday, November 22, 2022

SSH 一次执行多个命令

Ssh Multiple Commands

分号 ssh User@Host 'source /etc/profile; date' 写EOF ssh User@Host /bin/bash << EOF date ls -la uptime EOF 使用脚本 echo 'date' > 1.sh ssh User@Host bash -s < 1.sh

Posted by BlueFat on Monday, November 21, 2022

正则表达式

Regex

基本语法 代码 说明 . 匹配除换行符外任意一个字符 [abc] 字符集合,匹配集合中包含的任意一个字符 [^abc] 字符集合,匹配非集合内的任意一个字符 [a-z] 字符集合范围,匹

Posted by BlueFat on Thursday, August 18, 2022

Firewalld ipset 使用

Firewall Ipset

一.firewalld中ipset的用途: 1.用途: ipset是ip地址的集合，firewalld使用ipset可以在一条规则中处理多个ip

Posted by BlueFat on Saturday, June 18, 2022

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