Linux运维简要笔记📒

1.1 Linux 终端变成-bash-4.2$解决办法

原因：用户user的家目录下文件丢失导致，缺少下面2个文件bash_profile bashrc

1、切换到有故障的用户
su - user

2、复制/etc/skel 里面的模板到当前用户
cp /etc/skel/.bash*  ~

exit重新切换即可！

1.2 dockerhub 加速地址

🤣总有一个有用

bash

{
  "registry-mirrors": [
    "https://docker.hpcloud.cloud",
    "https://docker.m.daocloud.io",
    "https://docker.mybacc.com",
    "https://docker.1panel.live",
    "http://mirrors.ustc.edu.cn",
    "https://docker.chenby.cn",
    "http://mirror.azure.cn",
    "https://dockerpull.org",
    "https://dockerhub.icu",
    "https://hub.rat.dev",
    "https://proxy.1panel.live",
    "https://docker.1panel.top",
    "https://docker.m.daocloud.io",
    "https://docker.1ms.run",
    "https://docker.ketches.cn"
  ]
}

1.3 MacOS下Homebrew国内镜像加速配置

bash

#查看当前使用的是哪种SHELl
echo $SHELl

#修改对应的SHELl配置文件
vim ~/.bash_profile  # bash用户
vim ~/.zshrc         # zsh用户（推荐）

然后在文件末尾添加如下配置：

bash

# 🍺 Homebrew国内镜像加速配置
# 推荐使用USTC或清华镜像，阿里镜像git clone可能有问题

export HOMEBREW_BREW_GIT_REMOTE="https://mirrors.ustc.edu.cn/brew.git"
export HOMEBREW_CORE_GIT_REMOTE="https://mirrors.ustc.edu.cn/homebrew-core.git"
export HOMEBREW_BOTTLE_DOMAIN="https://mirrors.ustc.edu.cn/homebrew-bottles"

# 🎯 最新brew API国内加速（关键配置）
export HOMEBREW_API_DOMAIN="https://mirrors.ustc.edu.cn/homebrew-bottles/api"

# 🤫 隐藏环境变量提示
export HOMEBREW_NO_ENV_HINTS="1"

保存并退出后，使配置生效：

bash

source ~/.bash_profile
# 或者
source ~/.zshrc

配置完成后，你再运行brew安装指令，将感受到飞一般的畅快体验！🎉

bash

brew install telnet

1.4查看一个命名空间下所有pod 的报错日志

bash

kubectl get pod -n paas-ec | grep -v NAME | awk '{print $1}' | xargs -I {} sh -c 'printf "\e[1;7mLogs for Pod {}:\e[0m\n" && kubectl logs --tail=50 -n paas-ec {} | grep -i -C 10 error'

1.5 ubuntu22.04开启root用户登录

设置 root 用户的密码

bash

sudo passwd root

配置允许 root 用户直接登录

bash

vim /etc/ssh/sshd_config
#找到相应代码行并注释
#PermitRootLogin prohibit-password

#加上
PermitRootLogin yes

重启 ssh 服务

bash

service ssh restart

1.6 linux下查看网址经过路由的命令

bash

traceroute www.163.com
traceroute 114.114.114.114

centos/openeuler 系统上安装traceroute命令

bash

yum install traceroute

ubuntu 系统上安装traceroute命令

bash

apt install traceroute

1.7 centos7.9 软件仓库镜像加速

DANGER

CentOS 7 已于 2024 年 6 月 30 日结束维护，建议立即迁移到其他解决方案。如有需要继续使用 CentOS，请查阅 CentOS Vault 帮助。

阿里云 CentOS Vault 镜像加速

bash

cat > /etc/yum.repos.d/CentOS-Base.repo << 'EOF'

[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#released updates 
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
EOF

南大 CentOS Vault 镜像加速

bash

cat > /etc/yum.repos.d/CentOS-Base.repo << 'EOF'

[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#released updates 
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
baseurl=https://mirror.nju.edu.cn/centos-vault/7.9.2009/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
EOF

1.8 vcenter SSL证书过期时间

最简单解决步骤： 1.ssh登录vcenter server后台，用户名root，密码和控制台的administrator管理员密码相同，长期不登录可能会提示你密码过期需要更新。 2.输入shell，然后使用date -s 20241010这样的命令修改日期到证书过期前即可不需要很准确。 3.再次登录vCenter Client，现在可以登录进去了。 4.进入菜单，系统管理-证书-证书管理，可以看到右侧的ssl证书已经过期了，点击操作中的续订即可。 5.回到之前的命令行输入“service-control --restart vpxd”重启vCenter Server服务后即恢复正常。

1.9 rocky linux: 禁止使用root登录ssh，只允许指定用户登录

先创建指定用户，并设置密码

bash

useradd srebro
passwd srebro

配置ssh

bash

[root@img ~]# vim /etc/ssh/sshd_config
#设置PermitRootLogin值为no
#PermitRootLogin yes
PermitRootLogin no

#新增一行: 只允许 srebro 用户登录
AllowUsers srebro

检测配置是否正确，并重启 ssh

bash

sshd -t
systemctl restart sshd

1.10 nacos 启动后报错，Caused by: java.lang.IllegalStateException: No DataSource set

现象： nacos 在运行好长一段时间后，突然无法启动；报错 Caused by: java.lang.IllegalStateException: No DataSource set

bash

nacos  | 2025-12-04 22:44:39,153 ERROR Application run failed
nacos  | 
nacos  | org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memoryMonitor' defined in URL [jar:file:/home/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-config-2.2.0.jar!/com/alibaba/nacos/config/server/monitor/MemoryMonitor.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'asyncNotifyService': Unsatisfied dependency expressed through field 'dumpService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'externalDumpService': Invocation of init method failed; nested exception is ErrCode:500, ErrMsg:Nacos Server did not start because dumpservice bean construction failure :
nacos  | No DataSource set
nacos  |        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)
nacos  |        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
nacos  |        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
nacos  |        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:953)
nacos  |        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
nacos  |        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
nacos  |        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
nacos  |        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:745)
nacos  |        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:420)
nacos  |        at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
nacos  |        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1317)
nacos  |        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
nacos  |        at com.alibaba.nacos.Nacos.main(Nacos.java:35)
nacos  |        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
nacos  |        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
nacos  |        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
nacos  |        at java.lang.reflect.Method.invoke(Method.java:498)
nacos  |        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
nacos  |        at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
nacos  |        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
nacos  |        at org.springframework.boot.loader.PropertiesLauncher.main(PropertiesLauncher.java:467)
nacos  | Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'asyncNotifyService': Unsatisfied dependency expressed through field 'dumpService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'externalDumpService': Invocation of init method failed; nested exception is ErrCode:500, ErrMsg:Nacos Server did not start because dumpservice bean construction failure :
nacos  | No DataSource set
nacos  |        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:659)
nacos  |        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639)
nacos  |        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
nacos  |        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
nacos  |        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
nacos  |        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
nacos  |        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1389)
nacos  |        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1309)
nacos  |        at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)
nacos  |        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
nacos  |        ... 27 common frames omitted
nacos  | Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'externalDumpService': Invocation of init method failed; nested exception is ErrCode:500, ErrMsg:Nacos Server did not start because dumpservice bean construction failure :
nacos  | No DataSource set
nacos  |        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:440)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)
nacos  |        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
nacos  |        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
nacos  |        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
nacos  |        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
nacos  |        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1389)
nacos  |        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1309)
nacos  |        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656)
nacos  |        ... 42 common frames omitted
nacos  | Caused by: com.alibaba.nacos.api.exception.NacosException: Nacos Server did not start because dumpservice bean construction failure :
nacos  | No DataSource set
nacos  |        at com.alibaba.nacos.config.server.service.dump.DumpService.dumpOperate(DumpService.java:260)
nacos  |        at com.alibaba.nacos.config.server.service.dump.ExternalDumpService.init(ExternalDumpService.java:61)
nacos  |        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
nacos  |        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
nacos  |        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
nacos  |        at java.lang.reflect.Method.invoke(Method.java:498)
nacos  |        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389)
nacos  |        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333)
nacos  |        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157)
nacos  |        ... 54 common frames omitted
nacos  | Caused by: java.lang.IllegalStateException: No DataSource set
nacos  |        at org.springframework.util.Assert.state(Assert.java:76)
nacos  |        at org.springframework.jdbc.support.JdbcAccessor.obtainDataSource(JdbcAccessor.java:86)
nacos  |        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:376)
nacos  |        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:465)
nacos  |        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:475)
nacos  |        at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:508)
nacos  |        at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:515)
nacos  |        at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalConfigInfoPersistServiceImpl.findConfigMaxId(ExternalConfigInfoPersistServiceImpl.java:616)
nacos  |        at com.alibaba.nacos.config.server.service.dump.processor.DumpAllProcessor.process(DumpAllProcessor.java:51)
nacos  |        at com.alibaba.nacos.config.server.service.dump.DumpService.dumpConfigInfo(DumpService.java:317)
nacos  |        at com.alibaba.nacos.config.server.service.dump.DumpService.dumpOperate(DumpService.java:230)
nacos  |        ... 62 common frames omitted
nacos  | 2025-12-04 22:44:39,157 WARN [ThreadPoolManager] Start destroying ThreadPool
nacos  |

解决方法：

看了网络上很多方案，有说在启动参数里加上 allowPublicKeyRetrieval=true , 但我测试后发现都不管用；我最终是把 mysql8 中的 nacos 用户，指定密码插件为mysql_native_password。

bash

## 修改用户的密码插件为mysql_native_password，并设置密码
ALTER USER 'nacos'@'%' IDENTIFIED WITH mysql_native_password BY 'xxxxxxx';

关于 nacos 的部署，可参考： https://blog.srebro.cn/archives/90

1.11 nvm 报错try `nvm ls-remote` to browse available versions.

问题现象：前端在使用 nvm 切换 node 版本的时候，报错： try nvm ls-remote to browse available versions.
大概率是https://nodejs.org/ 挂了
解决方法：配置node 其他站点的加速，比如https://npmmirror.com/mirrors/node

(macOS/Linux)：添加到你的 Shell 配置文件 (~/.zshrc 或 ~/.bashrc 或 /etc/profile)

bash

vim /etc/profile
#加速nvm
export NVM_NODEJS_ORG_MIRROR=https://npmmirror.com/mirrors/node

source /etc/profile

windows 在 nvm 的安装目录（如 C:\Users<用户名>\AppData\Roaming\nvm）下找到 settings.txt 文件，添加

bash

node_mirror: https://npmmirror.com/mirrors/node/
npm_mirror: https://npmmirror.com/mirrors/npm/

OpenEuler

操作系统优化&安全问题

Jenkins 常规配置&插件管理

Jenkins 优秀插件讲解

Jenkins Pipeline 必知必会

Gitlab代码库&Jenkins集成

构建工具与Jenkins集成实践

Jenkins&Sonarqube集成

Jenkins小技巧

Linux运维简要笔记📒

1.1 Linux 终端变成-bash-4.2$解决办法

1.2 dockerhub 加速地址

1.3 MacOS下Homebrew国内镜像加速配置

1.4查看一个命名空间下所有pod 的报错日志

1.5 ubuntu22.04开启root用户登录

1.6 linux下查看网址经过路由的命令

1.7 centos7.9 软件仓库镜像加速

1.8 vcenter SSL证书过期时间

1.9 rocky linux: 禁止使用root登录ssh，只允许指定用户登录

1.10 nacos 启动后报错，Caused by: java.lang.IllegalStateException: No DataSource set

1.11 nvm 报错try `nvm ls-remote` to browse available versions.

Jenkins 优秀插件讲解

Linux运维简要笔记📒 ​

1.1 Linux 终端 变成-bash-4.2$解决办法 ​

1.2 dockerhub 加速地址 ​

1.3 MacOS下Homebrew国内镜像加速配置 ​

1.4查看一个命名空间下所有pod 的报错日志 ​

1.5 ubuntu22.04开启root用户登录 ​

1.6 linux下查看网址经过路由的命令 ​

1.7 centos7.9 软件仓库镜像加速 ​

1.8 vcenter SSL证书过期时间 ​

1.9 rocky linux: 禁止使用root登录ssh，只允许指定用户登录 ​

1.10 nacos 启动后报错，Caused by: java.lang.IllegalStateException: No DataSource set ​

1.11 nvm 报错try nvm ls-remote to browse available versions. ​

Linux运维简要笔记📒

1.1 Linux 终端变成-bash-4.2$解决办法

1.2 dockerhub 加速地址

1.3 MacOS下Homebrew国内镜像加速配置

1.4查看一个命名空间下所有pod 的报错日志

1.5 ubuntu22.04开启root用户登录

1.6 linux下查看网址经过路由的命令

1.7 centos7.9 软件仓库镜像加速

1.8 vcenter SSL证书过期时间

1.9 rocky linux: 禁止使用root登录ssh，只允许指定用户登录

1.10 nacos 启动后报错，Caused by: java.lang.IllegalStateException: No DataSource set

1.11 nvm 报错try `nvm ls-remote` to browse available versions.