The error message you're seeing, "Received disconnect from 10.0.10.7 port 22:2: Too many authentication failures," typically occurs when trying to connect to a server via SSH (Secure Shell) and too many incorrect authentication attempts have been made. This can happen for several reasons. Here are some steps and considerations to help you resolve the issue:
Received: verb, 表示接收或得到。disconnect: verb, 指断开连接。authentication: noun, 指验证过程,用于确认某人或某事的真实性。failures: noun, 表示失败或不成功的次数。occurs: verb, 发生或出现。via: preposition, 通过,表示使用某种方式或途径。incorrect: adjective, 错误的或不正确的。attempts: noun, 尝试或努力。made: verb, 制作或创建。several: adjective, 几个的,表示数量多于两个但不是很多。reasons: noun, 原因或解释。considerations: noun, 考虑或思考的事项。resolve: verb, 解决问题或分辨清楚。issue: noun, 问题,通常指需要解决的事情。Authentication CredentialsEnsure that the username and password or the private key you are using are correct. If you are unsure, verify them or reset them if possible.
Authentication AttemptsIf you are using an SSH client that tries multiple keys stored on your client machine, it might be exceeding the maximum number of authentication attempts allowed by the server:
Limit SSH Keys: Specify the correct key using the -i option in your SSH command:
ssh -i /path/to/private_key username@10.0.10.7
Edit SSH Config: You can also edit your SSH client configuration file (~/.ssh/config) to automatically use the correct key for the specific host:
Host 10.0.10.7
IdentityFile /path/to/private_key
IdentitiesOnly yes
tries: verb, 尝试或试图做某事。
exceeding: verb, 超出或超过预定限度。
Specify: verb, 明确指出或详细说明。
correct: adjective, 正确的,没有错误的。
configuration: noun, 配置,设置或安排的方式。
automatically: adverb, 自动地,指无需人工干预。
specific: adjective, 特定的,明确的。
Increase Server's Max Authentication TriesIf you have access to the server's SSH configuration, you can increase the MaxAuthTries setting in the /etc/ssh/sshd_config file. This setting defines the maximum number of authentication attempts permitted per connection. After editing, restart the SSH service:
sudo systemctl restart sshd
Increase: verb, 增加或提高。maximum: noun, 最大值或最高点。permitted: verb, 允许或许可。Verbose Mode for More InformationTo get more detailed information about what is happening during the connection attempt, use the -v option (verbose mode) when connecting:
ssh -v username@10.0.10.7
This will provide detailed output, showing each authentication step and might help you identify which key or method is causing the issue.
detailed: adjective, 详细的,提供许多细节。during: preposition, 在...期间,表示某事发生的时间范围。verbose: adjective, 冗长的,提供额外的细节或信息。identify: verb, 识别或确定。causing: verb, 导致,指引起某种效果或结果。LockoutsSome systems implement lockouts that temporarily block an IP or an account after too many failed authentication attempts. If this is the case, you may need to wait or reset the lockout status on the server.
implement: verb, 实施或执行计划或系统。lockouts: noun, 封锁或锁定,通常指因安全或政策原因阻止访问。temporarily: adverb, 暂时地,指在有限的或短暂的时间内。If you have access, check the server logs for more details on why the authentication is failing. The logs might provide specific information about the keys or methods being rejected. The relevant log file is usually /var/log/auth.log or /var/log/secure.
By following these steps, you should be able to identify and resolve the issue causing the "Too many authentication failures" error when trying to SSH into your server.
relevant: adjective, 相关的或切题的,指与当前讨论或情况直接相关的事物。causing: verb, 导致,指引起某种效果或结果。When you encounter the "Too many authentication failures" error during a git clone operation that uses SSH, the underlying issue is similar to what occurs with direct SSH connections. This error can arise if your SSH client attempts to authenticate with multiple keys and exceeds the number of allowed authentication attempts by the server. Here are steps to address this issue specifically for git operations:
encounter: verb, 遇到或遭遇,指意外地或偶然地面对一个问题或情况。underlying: adjective, 基本的或根本的,指事物的深层或隐藏的原因或基础。arise: verb, 出现或发生,指问题或情况开始存在。attempts: noun, plural form of "attempt," referring to efforts or tries to achieve something.exceeds: verb, 超过或超出预定限度或数量。address: verb, 处理或应对问题或情况。specifically: adverb, 特别地或明确地,指明确指出或强调某一点。Specify the SSH Key ExplicitlyTo ensure that the correct SSH key is used when cloning a Git repository, you can specify the key directly using the ssh-agent or by modifying the SSH command used by Git:
Using ssh-agent:
Start the ssh-agent, add your key, and then run the git clone command:
eval $(ssh-agent -s) # Start ssh-agent
ssh-add /path/to/private_key # Add your private key to the agent
git clone git@10.0.10.7:path/to/repo.git
Modifying the SSH command used by Git:
You can tell Git to use a specific SSH command with the key you want:
GIT_SSH_COMMAND="ssh -i /path/to/private_key -o IdentitiesOnly=yes" git clone git@10.0.10.7:path/to/repo.git
Explicitly: adverb, 明确地,指清楚且直接地表达或说明。
agent: noun, 代理或中介,指在特定任务中代表或服务于他人的实体或程序。
Configuration of Your SSH AgentIf you have multiple keys added to your ssh-agent, it might be cycling through all of them during the authentication process. You can list the keys currently managed by ssh-agent with:
ssh-add -l
If there are too many keys, consider removing some or all of them and then add only the key required for the Git server:
ssh-add -D # Remove all keys
ssh-add /path/to/private_key # Add just the necessary key
cycling: verb, 循环,指重复进行的过程。currently: adverb, 当前地,指在现时或目前的状态。consider: verb, 考虑,思考某事是否适合或合理。required: adjective, 必需的,指必须有的或必不可少的。ConfigurationFor a more permanent solution, especially if you frequently access this server, modify your ~/.ssh/config file to automatically select the correct key when connecting to the Git server:
Host 10.0.10.7
IdentityFile /path/to/private_key
IdentitiesOnly yes
User git
This configuration ensures that only the specified key is tried for the specified host, and it sets the default username (git in most Git over SSH setups).
permanent: adjective, 永久的,持久的,指长期存在而不是暂时或短暂的。solution: noun, 解决方案,指解决问题或应对挑战的方法或计划。especially: adverb, 特别地,用于强调某事物比其他事物更重要或显著。frequently: adverb, 频繁地,指经常或多次发生的。automatically: adverb, 自动地,指无需人工干预的方式。ensures: verb, 确保,使某事成为必然或确定发生。specified: adjective, 指定的,提及或明确说明的。setups: noun, plural form of "setup," 指组织或准备的方式,尤其是在技术或计算机系统配置方面。over: preposition, 通过,用于表示某种方式或途径,这里指通过SSH。Verbose Mode for DebuggingTo see what's happening during the connection attempt, you can clone the repository in verbose mode:
GIT_SSH_COMMAND="ssh -v" git clone git@10.0.10.7:path/to/repo.git
This command will provide detailed output about the SSH connection process, which can help in diagnosing the issue.
By following these steps, you should be able to resolve the "Too many authentication failures" error when cloning a Git repository over SSH.
attempt: noun, 尝试或努力,指试图完成某事的行动。diagnosing: verb, 诊断,指确定问题的原因或性质。