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Why Cannot I Use a Non-Default SSH Port to Log In to My Linux ECS? Symptom After changing the default SSH port, you could not use the new port to log in to the ECS. Possible Causes The access to the new port is not allowed in the security group. The new port is not enabled on the
How Do I Reset the Password for User root in Single-User Mode on a Linux ECS? Scenarios This section describes how to reset the password of user root in single-user mode on a Linux ECS. Back up data before resetting the password of user root in single-user mode. Select a method based
How Do I Configure Multi-User Logins for an ECS Running Windows Server 2012? Scenarios This section uses an ECS running Windows Server 2012 as an example to describe how to enable concurrent logins by multiple users. An ECS running Windows Server 2012, by default, allows concurrent
How Do I Configure Multiple IP Addresses for an ECS with Multiple NICs Attached? Symptom If an ECS has multiple NICs, perform the following operations to configure policy-based routing for the ECS to enable the network communication of secondary NICs. Possible Causes No routing rules
How Do I Configure File Sharing and Network Disk Mapping for a Windows ECS? Scenarios This section describes how to share a folder between Windows ECSs over an intranet. Constraints Some carriers may block ports 139 and 445. As a result, you cannot access the shared folders over the
Can I Use an ECS Instance ID to Learn What AS Group the Instance Is In? No. To obtain details about an AS group and the instances in the group, perform the following operations: Log in to the management console. Choose Compute > Auto Scaling > Instance Scaling. On the AS Groups tab
Why Cannot the Installation Script Be Downloaded When I Try to Install UniAgent on an ECS? Symptom During UniAgent installation on an ECS, the installation script cannot be downloaded. Message "Cloud not resolve host: aom-uniagent-xxxxxxxxxxxxxxxxxxxxxxxxxxxx" is displayed. Figure
How Do I Enable or Disable an ECS Firewall and Add a Port Exception to the Firewall? You can enable or disable an ECS firewall and add port exceptions to the firewall. For the operation procedure on a Windows ECS, see How Do I Disable a Windows ECS Firewall and Add a Port Exception
Why Is an Error Reported When Data Is Pushed to CSS After Logstash Is Deployed on an ECS? Symptom After Logstash is deployed on an ECS, an error is reported when data is pushed to CSS. The error message is as follows: LogStash::Outputs::ElasticSearch::HttpClient::Pool::BadResponseCodeError
Can I Use an ECS Instance ID to Learn What AS Group the Instance Is In? No. To obtain details about an AS group and the instances in the group, perform the following operations: Log in to the management console. Choose Compute > Auto Scaling > Instance Scaling. On the AS Groups tab
Why Is an Instance that Was Removed from an AS Group and Deleted Still Displayed in the ECS List? If an automatically added instance is protected, it is removed out of the AS group but not deleted, so that it can still be used by other services. An instance that is being used by other
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When you configure a VPN, perform the following operations on the on-premises gateway: Configure IKE and IPsec policies. Specify interesting traffic (ACL rules). Check
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When you configure a VPN, perform the following operations on the on-premises gateway: Configure IKE and IPsec policies. Specify the to-be-protected traffic (ACL rules)
Why Does an ECS Have EIP Access Information After I Enable a VPN? This occurs because the ECS has an EIP bound before the VPN is used. That is, you can access the ECS through the VPN or the EIP. After the VPN is established, traffic from servers meeting ACL rules can enter the tunnel
Do I Need to Add a Route for an ECS with Multiple NICs to Reach the On-premises Network? If a primary NIC is used to establish a VPN with the on-premises network, no route needs to be added. If a non-primary NIC is used to establish a VPN with the on-premises network, add a route
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When configuring a VPN, you need to perform the following operations on the gateway in your on-premises data center: Configure IKE and IPsec policies. Set the connection
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When configuring a VPN, you need to perform the following operations on the gateway in your on-premises data center: Configure IKE and IPsec policies. Configure a VPN connection
Why Does an ECS Have EIP Access Information After I Enable a VPN? A possible cause is that the ECS has an EIP bound before the VPN is used. In this scenario, you can access the ECS through both the VPN and the EIP. To allow only hosts on the VPN to access the ECS, unbind the EIP from
Do I Need to Add a Route for an ECS with Multiple NICs to Reach the On-premises Network? If the primary network interface card (NIC) is used to establish a VPN connection with the on-premises network, no route needs to be added. If a non-primary NIC is used to establish a VPN connection
How Do I Make a System Disk Image Support Fast ECS Creation? Scenarios Fast Create greatly reduces the time required to create ECSs from a system disk image. Currently, this feature is supported by all newly created system disk images by default, but some existing system disk images
