Ошибка no such host is known

Symptoms

Consider the following scenario:

  • You create a load test in Microsoft Visual Studio Team Agents 2010.

  • On one computer, you configure a test controller in a domain.

  • On another computer, you configure a test agent in a different domain.

    Note The two domains trust one another. 

  • You run the load test on the test controller computer and the test agent computer.

In this scenario, the test controller cannot connect to the test agent. Additionally, you receive the following error message:

System.Net.Sockets.SocketException (0x80004005): No such host is known

Cause

This issue occurs because the test agent computer sends its Network Basic Input/Output System (NetBIOS) name instead of sending its Fully Qualified Domain Name (FQDN) name to the test controller computer. When the DNS server of the test controller computer does not have the IP address mapping of the NetBIOS name of the test agent computer, the issue that is described in the «Symptoms» section occurs.

Resolution

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

To apply this hotfix, you must have Visual Studio 2010 Service Pack 1 (SP1) installed.

Restart requirement

You do not have to restart the computer after you install the hotfix. However, you must restart the test controller services and test agent services.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

File name

File version

File size

Date

Time

Platform

Leviewer.exe

10.0.40219.385

118,544

8-Mar-12

9:39

x86

Microsoft.teamfoundation.build.client.dll

10.0.40219.385

436,552

6-Mar-12

8:03

x86

Microsoft.teamfoundation.build.conTrols.dll

10.0.40219.385

1,365,328

8-Mar-12

9:39

x86

Microsoft.teamfoundation.client.dll

10.0.40219.385

1,595,704

6-Mar-12

8:03

x86

Microsoft.teamfoundation.common.dll

10.0.40219.385

525,624

6-Mar-12

8:03

x86

Microsoft.teamfoundation.common.library.dll

10.0.40219.385

335,184

6-Mar-12

8:03

x86

Microsoft.teamfoundation.conTrols.dll

10.0.40219.385

938,816

8-Mar-12

9:39

x86

Microsoft.teamfoundation.dll

10.0.40219.385

675,632

6-Mar-12

8:03

x86

Microsoft.teamfoundation.lab.activities.dll

10.0.40219.385

772,944

8-Mar-12

9:39

x86

Microsoft.teamfoundation.lab.client.dll

10.0.40219.385

153,408

6-Mar-12

8:03

x86

Microsoft.teamfoundation.lab.uiutils.dll

10.0.40219.385

267,080

8-Mar-12

9:39

x86

Microsoft.teamfoundation.lab.workflow.activities.dll

10.0.40219.385

440,672

8-Mar-12

9:39

x86

Microsoft.teamfoundation.officeintegration.common.dll

10.0.40219.385

376,160

8-Mar-12

9:39

x86

Microsoft.teamfoundation.officeintegration.project.dll

10.0.40219.385

517,480

8-Mar-12

9:39

x86

Microsoft.teamfoundation.sync.mapping.dll

10.0.40219.385

72,520

8-Mar-12

9:39

x86

Microsoft.teamfoundation.sync.provisioning.dll

10.0.40219.385

194,384

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.activities.common.dll

10.0.40219.385

315,248

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.activities.dll

10.0.40219.385

1,512,296

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.activityruntime.dll

10.0.40219.385

220,016

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.client.dll

10.0.40219.385

685,408

6-Mar-12

8:03

x86

Microsoft.teamfoundation.testmanagement.client.Themes.dll

10.0.40219.385

3,059,560

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.client.wpfconTrols.dll

10.0.40219.385

257,912

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.clientpackage.dll

10.0.40219.385

74,088

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.common.dll

10.0.40219.385

34,656

6-Mar-12

8:03

x86

Microsoft.teamfoundation.testmanagement.conTroller.dll

10.0.40219.385

120,680

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.conTrols.dll

10.0.40219.385

494,432

8-Mar-12

9:39

x86

Microsoft.teamfoundation.testmanagement.conTrols.wpfworkitemconTrols.dll

10.0.40219.385

100,232

8-Mar-12

9:39

x86

Microsoft.teamfoundation.versionconTrol.client.dll

10.0.40219.385

706,400

6-Mar-12

8:03

x86

Microsoft.teamfoundation.versionconTrol.common.dll

10.0.40219.385

233,312

6-Mar-12

8:03

x86

Microsoft.teamfoundation.versionconTrol.conTrols.dll

10.0.40219.385

4,439,392

8-Mar-12

9:39

x86

Microsoft.teamfoundation.workitemTracking.client.dll

10.0.40219.385

699,232

6-Mar-12

8:03

x86

Microsoft.teamfoundation.workitemTracking.conTrols.dll

10.0.40219.385

1,215,336

8-Mar-12

9:39

x86

Microsoft.teamfoundation.workitemTracking.proxy.dll

10.0.40219.385

391,008

6-Mar-12

8:03

x86

Microsoft.visualstudio.qualitytools.agentobject.dll

10.0.40219.385

106,848

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.common.dll

10.0.40219.385

1,355,600

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.conTrollerobject.dll

10.0.40219.385

276,328

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.datacollectionagentobject.dll

10.0.40219.385

37,248

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.executioncommon.dll

10.0.40219.385

481,640

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.resource.dll

10.0.40219.385

967,000

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.testcasemanagement.dll

10.0.40219.385

1,280,368

8-Mar-12

9:39

x86

Microsoft.visualstudio.qualitytools.tmi.dll

10.0.40219.385

398,672

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.build.dll

10.0.40219.385

142,680

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.dll

10.0.40219.385

94,024

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.teamexplorer.dll

10.0.40219.385

800,104

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.versionconTrol.dll

10.0.40219.385

59,248

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.versionconTrol.dll

10.0.40219.385

59,760

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.versionconTrol.dll

10.0.40219.385

61,296

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.versionconTrol.dll

10.0.40219.385

63,856

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.versionconTrol.dll

10.0.40219.385

940,392

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamfoundation.workitemTracking.dll

10.0.40219.385

461,168

8-Mar-12

9:39

x86

Microsoft.visualstudio.teamsystem.integration.dll

10.0.40219.385

193,368

8-Mar-12

9:39

x86

Microsoft.visualstudio.testtools.manualtest.common.dll

10.0.40219.385

813,416

8-Mar-12

9:39

x86

Microsoft.visualstudio.testtools.uitest.extension.ie.dll

10.0.40219.385

251,240

8-Mar-12

9:39

x86

Microsoft.visualstudio.testtools.uitest.extension.uia.dll

10.0.40219.385

107,368

8-Mar-12

9:39

x86

Msdiff.dll

10.0.40219.385

485,640

8-Mar-12

9:39

x86

Mtm.exe

10.0.40219.385

449,280

8-Mar-12

9:39

x86

Qtagent.exe

10.0.40219.385

21,256

8-Mar-12

9:39

x86

Qtagent.exe

10.0.40219.385

21,264

8-Mar-12

9:39

x86

Qtagent32.exe

10.0.40219.385

21,264

8-Mar-12

9:39

x86

Qtagent32.exe

10.0.40219.385

21,272

8-Mar-12

9:39

x86

Qtagentservice.exe

10.0.40219.385

100,120

8-Mar-12

9:39

x86

Tf.exe

10.0.40219.385

325,888

8-Mar-12

9:39

x86

Workaround

To work around this issue, use one of the following methods:

  • Update the DSN server of the test controller computer to map the IP address to the NetBIOS name of the test agent computer.

  • Add a manual entry to the host file of the test controller computer to resolve the NetBIOS name of the test agent computer.

More Information

After apply this hotfix, you must enable the test controller and the test agent to communicate with the FQDN name instead of NetBIOS name. To do this, edit the following files:

  • Add the <add key=»UseNetBiosName» Value=»0″> appSettings element to the <Controller Install Directory>Common7IDEQTController.exe.config host file on the test controller computer.

  • Add the <add key=»UseNetBiosName» Value=»0″> appSettings element to the <Agent Install Directory>Common7IDEQTAgentService.exe.config host file on the test agent computer.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the «Applies to» section.

После установки сервера 1С на Linux у пользователей могут возникнуть проблемы при попытке подключиться к нему. Данные проблемы могут быть связаны как с настройками на сервер или клиентском компьютере, так и с настройками сетевой инфраструктуры. Рассмотри наиболее часто встречающиеся ошибки и методику поиска и исправления причин этих ошибок.

Оглавление:

1. Этот хост неизвестен / No such host is known

2. Ошибки соединения с сервером 1С/ рабочим процессом 1С

2.1. Попытка установить соединение была безуспешной.

2.2. Сервер 1С:Предприятия не обнаружен

2.3. Ошибка установки соединения

2.4. Методика устранения ошибок соединения с сервером 1С

Этот хост неизвестен / No such host is known

Пример полного текста ошибки:

Ошибки соединения с сервером 1С:Предприятия 8.3:
server_addr=tcp://sony2 descr=11001(0x00002AF9):
Этот хост неизвестен
line=1068 file=srcDataExchangeCommon.cpp

Ошибка соединения с сервером 1С:Предприятия 8.3 Этот хост неизвестен

Ошибка при выполнении операции с информационной базой.
server_addr=tcp://1s-on-1c-1 descr=11001(0x00002AF9): No such host is known line=1068 file=srcDataExchangeCommon.cpp

Ошибка при выполнении операции с информационной базой. No such host is known

Описание:

Ошибка может возникать как при работе с консолью администрирования 1С:Предприятия(добавление сервера, создание базы…), так и при запуске информационной базы.

Такая ошибка характерна, когда компьютер пользователя не обладает информацией о соответствии ip-адреса dns-имени сервера.

Решение:

Настроить DNS-адресацию или прописать адреса в файл hosts.

О том, как и почему это надо сделать — можно почитать тут Настройка DNS-адресации на сервере 1С.

В случае, если кажется, что все имена прописаны верно, необходимо:

1. Проверить еще раз. Скорее всего, где-то ошибка.

2. Сравнить, как хост прописан на самом сервере и на компьютере пользователя. Имена должны быть одинаковыми.

Часто ошибка связана с тем, указан в имени доменный суфикс или нет.

3. Проверить в консоли администрирования 1С: Предприятия — как у вас собран кластер 1С:Предприятия.

  • Возможно, у вас в консоли сервера отображаются не по DNS-имени, а по IP-адресам.
  • Возможно, клиент не сможет сопоставить IP-адрес DNS-имя(в случае, если сервер 1С находится в другой сети, и вы подключаетесь к кластеру напрямую).

Не правильно:

Правильно:

Необходимо удалить кластер. И собрать из консоли администрирования его заново.

Ошибки соединения с сервером 1С / рабочим процессом 1С

Описанные далее ошибки могут возникать как при работе в консоле администрирования 1С, так и при запуске информационной базы.

Методика по решению всех приведенных далее ошибок — описана в конце этого подраздела ошибок соединения с сервером / рабочим процессом.

Попытка установить соединение была безуспешной

Пример полного текста ошибки:

Ошибка соединения с сервером 1С:Предприятия 8.3:
server_addr=tcp://son1c:1541 descr=192.168.0.101:1541:
Попытка установить соединение была безуспешной, т.к. от другого компьютера за требуемое время не получен нужный отклик, или было разорвано уже установленное соединение из-за неверного отклика уже подключенного компьютера.

Ошибка соединения сервером – клиент не может подключиться к агенту сервера 1С, процессу ragent. Порт в сообщении 1541(по умолчанию):

Попытка установить соединение была безуспешной

Ошибка соединения рабочим процессом – клиент не может подключиться к рабочему процессу сервера rphost. Порт в сообщении может быть из диапазона 1560-1591(по умолчанию).

Ошибка соединения сервером – клиент не может подключиться к менеджеру сервера 1С, процессу rmgr. Порт в сообщении 1540(по умолчанию).

Сервер 1С:Предпрятия не обнаружен

Пример полного текста ошибки:

Сервер 1С:Предприятия не обнаружен
Не запущен ни один рабочий процесс. Соединение с информационной базой невозможно.

Такое сообщение можно увидеть если на сервере 1С не запущен ни один рабочий процесс rphost.

Сервер 1С:Предприятия не обнаружен Не запущен ни один рабочий процесс. Соединение с информационной базой невозможно.

Ошибка установки соединения

Пример полного текста ошибки:

Ошибка установки соединения
Выполняется ожидание возможности запуска.
При появлении возможности, запуск будет выполнен автоматически.

Ошибка установки соединения Выполняется ожидание возможности запуска. При появлении возможности, запуск будет выполнен автоматически.

Методика устранения ошибок соединения с сервером 1С

В данном случае необходимо понимать, что:

  • Либо процессов нет;
  • Либо не удается «увидеть» процессы в связи с отсутствием доступа;
  • Либо происходит обращение по другому адресу.

1. Сначала проверим есть ли на сервере 1С в запущенные рабочие процессы rphost.

Или

Видим, что у нас rphost слушает порт 1560

Если не все процессы запущены смотрим как исправить тут Ошибки сервера 1С на Linux.

2. Если процессы запущены — проверим доступность рабочих процессов по портам, которые они «слушают».

С компьютера пользователя необходимо выполнить команду:

telnet server_address 1560

и другие порты, на которых есть rphost.

К причинам отсутствия доступа по данному порту можно отнести:

  • Блокировка брадмауэром или другими подобными программами;
  • Отсутствие доступа на уровне сети;
  • Работающий selinux.

3. Проверяем dns-адресацию.

В частности:

      • hosts на компьютере пользователя

(в Windows: C:WindowsSystem32driversetchosts);

      • hosts на сервере 1С (в ОС Linux: /etc/hosts);
      • реестр кластера 1С

(по умолчанию в ОС Linux: /home/usr1cv8/.1cv8/1C/1cv8/reg_1541/1CV8Clst.lst.).

Ошибка может быть связана с несоответствием указания имени сервера

      • у пользователя
      • в реестре кластера серверов 1С:Предприятия.

Например, с различиями в указании имени сервера с/без домена.

If you have been using or working with .NET applications or any other third party application you must have come across No such host is known error. This is a very common error that has been faced by many users. The error has also been faced by users when using GitHub and online services. If you are also facing this issue and do not know how to resolve it. Well, this guide is for you, we have gathered some methods that will help resolve the issue. But first, let’s go through its possible causes.

No Such Host Is Known

Causes of No Such Host Is Known Error Problem Issue

Talking of the causes behind No such host is known error we came across some very common causes of this issue. The first cause was DNS name when your software application runs and tries to make communication with an online API based URL and doesn’t find its hostname or server the error occurs. Another possible cause of this issue is when your applications software does not or unable to send its Fully Qualified Domain Name (FQDN) name then also the error seems to appear. The error Also appears if your Server machine is not a part of a Workgroup or Domain.

  • Unable to resolve the hostname
  • Unable to send FQDN
  • The server machine is not connected to workgroup or domain

Similar Types of No Such Host Is Known Error Issue

  • Error 0x80072af9
  • PowerShell
  • Error in uipath
  • Jams
  • No Such Host Is Known PHP
  • Identity server
  • No such host is known PostgreSQL

Here in this section, we will demonstrate all the methods to fix No Such Host Is Known Error. The following are the methods we will go through. In the first method, we will go through some basic points before you proceed to further methods. In the second method, we will try to resolve the issue by executing some important commands.

1. Basic Troubleshooting Points

We suggest you to first go through all the essential points before jumping to any method. These are some critical points that will make sure that the No Such Host Is Known VPN issue isn’t related to any critical misconfiguration or similar.

  • Make sure server machine is connected to workgroup or domain
  • Check your network is working
  • Make sure that system is responding correctly
  • Make sure that the DSN server is up to date so that it can easily map the IP address
  • On the test controller computer add a manual entry to the host file to fix the No Such Host Is Known SQL Server issue

2. Using the Command Prompt

In this No Such Host Is Known PHP method, we will perform a DNS lookup to verify whether our system is able to detect the hostname. Follow the steps now.

  • STEP 1. In the Start menu, type cmd, and run it as admin privileges
  • STEP 2. Now firstly we will check the IP and respective DNS by using the below command
ipconfig /all

No Such Host Is Known

  • STEP 3. Now execute the following
nslookup
  • STEP 4. Make sure to put the hostname from your code
  • STEP 5. Check if the DNS server is able to lookup resolve the hostname system.net.sockets.socketexception No Such Host Is Known error.
**NOTE: While putting the hostname make sure to avoid typo or white spaces in the hostname.
If you are retrieving this input from a configuration file or JSON call or,
you may get to see some difference in source string and the variable.

3. Fixing the Issue when Using GoldMine Premium Edition

In this method, we will fix the issue occurring when using the GoldMine Premium Edition. Follow the steps to fix the system net sockets socketexception No Such Host Is Known issue.

  • STEP 1. Open up the SMTP server and Verify the  information in the account settings

GoldMine Premium Edition

  • STEP 2. In the window go to Tools and select Options got to the E-mail Tab
  • STEP 3. Click on the Accounts Button
  • STEP 4. Now Highlight the account and then hit the Edit Button
  • STEP 5. Go to the Sending mail section and go to SMTP Server
  • STEP 6. Here make sure that SMTP Server name is correct 

No Such Host Is Known GoldMine

  • STEP 7. Make sure to save all the changes and
  • STEP 8. Verify by sending an email for getting rid of php_network_getaddresses getaddrinfo failed No Such Host Is Known issue.

4. Fixing the Issue when Using SSH

If you are facing the php_network_getaddresses: getaddrinfo failed: No Such Host Is Known issue while using the SSH, maybe you are making some mistakes in the command.

  • Usually, we use the below command, to connect to a particular server or device
ssh IP ADDRESS:22
  • If you are getting the utorrent No Such Host Is Known error using the above command using the following command
ssh -p 22 [email protected] ADDRESS
Conclusion:

In this troubleshooting guide on No Such Host Is Known Error. We have seen three different approaches to tackle this error. With these methods, you will surely get rid of this error. Furthermore, we have also given you some important information regarding their possible causes.

We hope by following this guide you get rid of this No Such Host Is Known error. For more guides on tips and troubleshooting. Follow us. Thank You!

When Running the web App locally there is no issue to connect to the DB,

after deploying the Web App to Azure the DB(Also Azure) connection attempt throws the following error:

[Win32Exception (0x80004005): No such host is known]

[SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server.
The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.
(provider: TCP Provider, error: 0 - No such host is known.)]

The DB FW Settings: Allow access to Azure services: is set ON

Any Idea on how I can trouble shoot/ Resolve this issue?

David Makogon's user avatar

David Makogon

69.2k21 gold badges140 silver badges188 bronze badges

asked Apr 9, 2016 at 16:02

David Lang's user avatar

1

This could be caused by pasting your connection string in after Data Source=

connectionString="Data Source=Server=...."

Instead, it should be

connectionString="Server=...."  

Tom Aranda's user avatar

Tom Aranda

5,88911 gold badges35 silver badges51 bronze badges

answered Nov 3, 2017 at 14:59

Petebr's user avatar

PetebrPetebr

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1

Make sure you don’t override connection string in portal config
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answered Sep 3, 2016 at 11:39

Egor Popov's user avatar

Egor PopovEgor Popov

4584 silver badges12 bronze badges

Worked yesterday, stopped working today. Redeployed my app and it started working again.

answered May 3, 2019 at 8:14

ulu's user avatar

uluulu

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1

Could you ensure that:
1) Remote connections are allowed to the SQL Server. — You did that, so it is OK.

2) Use the full name of the server you are connecting to (myserver.database.windows.net) not something else.

Did you try to connect to it from your local computer using SQL Server Management Studio? If so, and if server authentication is set to SQL Server and Windows Authentication and it works, then please paste the details as David suggested and we will try to troubleshoot (actually, with SQL Azure there is not so much to troubleshoot), or try to ask technical support.

answered Apr 11, 2016 at 6:36

Alex Belotserkovskiy's user avatar

I was missing Service Bus connection, that can be found below:

Azure Function > Integrate > Outputs > Azure Service Bus > Service Bus connection

Last two may be something else for you.

answered Nov 3, 2017 at 9:17

Manohar Reddy Poreddy's user avatar

[![In my case i dont know how in the virtual network and firewall option the option in red was pressed I turned on to allow azure service can connect the sql server, and it did the trick][1]][1]

answered May 7, 2020 at 14:43

Giancarlo G's user avatar

I had the exact same situation:

This happened to me:

  1. I created a database in Azure, using a bacpac from a blob
  2. I deployed my web app to azurewebsites.net
  3. Running my web app in localhost it connects successfully to the new database
  4. Running my web app in azurewebsites.net it throwed: No such host is known

I tried many things but at the end I think it solved by itself (maybe it was a cache problem).

Try deleting your web.config using FTP and reuploading it.

answered Aug 15, 2016 at 4:11

sports's user avatar

sportssports

7,81314 gold badges71 silver badges129 bronze badges

I fixed this issue replacing the connection string in my code.

The correct connectionstring for mysql, the port is splited from the host, like:


Server=myServerAddress;Port=1234;Database=myDataBase;Uid=myUsername;Pwd=myPassword

check it out in: https://www.connectionstrings.com/mysql/

answered Dec 9, 2016 at 23:51

Henrique's user avatar

HenriqueHenrique

6024 silver badges18 bronze badges

Stuck with ‘SSH: could not resolve hostname: no such host’ is known error? We can help you.

This error implies that the server is down or the hostname is not given properly etc.

At Bobcares, we often get requests from our customers regarding SSH as part of our Server Management Services.

Today, we’ll see the reasons for this error to occur and how our Support Engineers fix it.

Why SSH: Could not resolve hostname server error?

Now, let’s discuss what causes this error to occur.

Many developers reported that lack of connectivity is the most common cause of this error.

So, we always make sure that it is properly connected to the internet.

Today, let’ see some scenarios where our Engineers handled this error perfectly.

How we fix this error?

Having a decade of experience in managing servers, our Dedicated Engineers are familiar with the SSH errors. Now, let’s discuss how our Support Engineers fix this error.

As we already discussed some of the possible causes for this error, the next question is how we fix it?

Recently, one of our customers approached us saying that he is getting an error like the one shown below while he is trying to ssh.

So, our Support Engineers checked in detail and found that he was trying to ssh using the way below:

ssh IP ADDRESS:22

We suggested the customer to try ssh-ing using the command as shown below:

ssh -p 22 user@IP ADDRESS

This way he was successfully able to SSH into the server.

Also, we handled a situation where the customer approached with the same error. But, when checked /etc/hosts file was configured properly.

So, we did deep dig and found that the hostname was not given properly in /etc/hosts file.

We added the hostname as:

ssh could not resolve hostname: no such host is known

Finally, this fixed the problem.

[Need any assistance with SSH errors? – We’ll help you]

Conclusion

In short, this error may occur either due to some connectivity issues or some wrong configuration. Also, we saw how our Support Engineers find fix for this error in detail.

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