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This page describes how to enable interactive access to an instance's serial console to debug boot and networking issues, troubleshoot malfunctioning instances, interact with the GRand Unified Bootloader GRUBand perform other troubleshooting windows 8.1 enterprise build 9600 product key list free. A virtual machine instance has four virtual serial ports. Interacting with a serial port is similar to using a terminal window, in that input and output is entirely in text mode and there is no graphical interface or mouse support.
The instance's operating system, BIOS, and other system-level entities often write output to the serial ports, and can accept input such as windows 8.1 enterprise build 9600 product key list free or answers to prompts. Typically, these system-level entities use the first serial port port 1 and serial port 1 is often referred to as the serial console.
If you only need to view serial port output without issuing any commands to the serial console, you can call the getSerialPortOutput method or use Windows 8.1 enterprise build 9600 product key list free Logging to read information that your instance has written to its serial port; see Viewing serial port logs.
However, if you run into problems accessing your instance /50424.txt SSH or need to troubleshoot an instance that is not fully booted, you больше информации enable interactive access to the serial console, which lets you connect to and interact with any of your instance's serial ports. For example, you can directly run commands and respond to prompts in the serial port. When you enable or disable the serial port, you can use any Boolean value that is accepted by the metadata server.
For more information, see setting boolean values. To perform this task, you must have the following permissions : compute. Enabling interactive serial console access on a project enables access for all VM instances that are part of that project.
By default, interactive serial port access is disabled. In either case, any per-instance setting overrides the project-level setting or the default setting. Go to Metadata. In the API, make a request to the projects.
Enable interactive serial console access for a specific instance. A per-instance setting, if it exists, overrides any project-level setting. Similarly, you can enable access for one or more instances even if it is disabled for the project, explicitly or by default.
Go to the VM instances page. Using the Google Cloud CLI, enter the instances add-metadata command, replacing instance-name with the name of your instance.
In the API, make a windows 8.1 enterprise build 9600 product key list free to the instances. After enabling interactive access for an instance's serial console, you can connect to the serial console using the Google Cloud console, the Google Cloud CLI, or a third-party SSH client.
The serial windows 8.1 pro network drivers free authenticates users with SSH keys. Specifically, you must add your windows 8.1 enterprise build 9600 product key list free SSH key to the project or instance metadata and store your private key on the local machine from which you want to connect. If you are using a third-party client, you might need to add SSH keys manually. Replace instance-name with the name of the instance whose serial console you want to access.
By default, the connect-to-serial-port command connects to port 1 of the serial console. If you are connecting to a Windows VM instance, connect to port 2 instead:.
To connect to any other port, provide a different port number using the --port flag. You can provide a port по этому сообщению from 1 through 4, inclusively. To learn more about port numbers, see Understanding serial port numbering. You can connect to an instance's serial console using other third-party SSH clients, as long as the client lets you connect to TCP port For example, the following SSH command connects to the default serial port 1 of an instance named example-instance with the username jane in a project with the project ID myproject.
The instance is in zone us-central1-f. Replace private-ssh-key-file with the private SSH key file for the instance. In detail, you can connect to the serial console of an instance using the following login and address information:. If you are connecting to a Windows VM instance, connect through port 2 using the following command:. If you are having trouble connecting using a third-party SSH client, you can run the gcloud compute connect-to-serial-port command with the --dry-run command-line option to see the SSH command that it would have run on your behalf.
Then you can compare the options with the command you are using. To set up your system to check the server SSH key, complete the following steps:. Add the contents of the server SSH key, with ssh-serialport. If your client fails to authenticate the server key, immediately end the connection attempt and complete the earlier steps to download a new Google Serial Узнать больше server SSH key.
If, after updating the host key, you continue to receive a host authentication error from your client, windows 8.1 enterprise build 9600 product key list free attempts to connect to the serial port and contact Google support.
Do not provide any credentials over a connection where host authentication has failed. This doesn't work because the serial console does not recognize PC keyboard combinations.
The exit or logout command doesn't work because the guest is not aware of any network or modem connections. Using this command causes the console to close and then reopen again, and you remain connected to the session. If you would like to enable exit and logout commands for your session, you can enable it by setting the on-dtr-low option.
If you are trying to troubleshoot an issue with a VM that has booted completely or trying to troubleshoot an issue that occurs after VM has booted past single user mode, you might be prompted for login information when trying to access the serial console.
By default, Google-supplied Linux system images are not configured to allow password-based logins for local users. However, Google-supplied Windows images are configured to allow password-based logins for local users. If your VM is running an image that is preconfigured with serial port logins, you need to set up a local password on the VM so that you can log in to the serial console, if prompted.
You can set up a local password after connecting to the VM or by using a start-up script. You can use a startup script windows 8.1 enterprise build 9600 product key list free set up a local password that enables you to connect to the serial console during or after VM creation. Go to VM instances.
To reboot the VM, click Reset. For more information, see Reset a VM. The following instructions describe how to set up a local password for a user on a VM so that the user can log on to the serial console of that VM using the specified password. Connect to the VM. Replace instance-name with the name of your instance.
On the VM, create a local password with the following command. This sets a password for the user that you are currently logged in as. Next, log out of the instance and connect to the serial console. Login prompts are enabled on port 1 by default on most Linux operating systems. However, port 1 can often be overwhelmed by logging data and other information being printed to the port. Instead, you can choose to супер!
windows 10 pro 64 bit bootable usb free благодарю a login prompt on another port, such as port 2 ttyS1by executing one of the following windows 8.1 enterprise build 9600 product key list free on your VM. You can see a list of available ports for an VM in Understanding serial port numbering. The following table lists images preconfigured with a serial console login and the default ports. For example:. For Linux operating systems using sysvinitrun the following command:.
Each virtual machine instance has four serial ports. Linux and other similar systems number their serial ports 0 through 3. Use the table below to help you figure out which port you want to connect to.
The Magic SysRq key feature lets you perform low-level tasks regardless of the system's state. For example, you can sync file systems, reboot the instance, end processes, and unmount file systems using the Magic SysRq key нажмите чтобы прочитать больше. Compute Engine provides audit logs to track who has connected and disconnected from an instance's serial console. To view logs, you must have permissions for the Logs Viewer or be a project viewer or editor.
Go to Logs Explorer. A list of audit logs appears. The logs describe connections and disconnections from a serial console. Expand any of the entries to get more information:. There are different audit log properties for different log types. For example, audit logs relating to connections have properties microsoft word software for windows 7 are specific to connection logs, while windows 8.1 enterprise build 9600 product key list free logs for disconnections have their own set of properties.
There are certain audit log properties that windows 8.1 enterprise build 9600 product key list free also shared between both log types. The following table provides audit log properties and their values for all serial console logs: Property Value. The following table provides audit log windows 8.1 enterprise build 9600 product key list free and their values specific for connection logs: Property Value.
This is used to select the public key to match. OK indicates that the operation completed successfully without any errors. Because the enum value for this property is 0the status. However, any code that checks for a status. OK will work as expected.
The following table provides посетить страницу log properties and their values specific for disconnection logs:. When a connection fails, Compute Engine creates an audit log entry. A failed connection log looks very similar to a successful connection entry, but has the following properties to indicate a failed connection. The canonical Google API error code that best describes the error. The following are possible error codes that might appear:.
You can disable interactive serial console access by changing metadata on the specific instance or project, or by setting an Organization Policy that disables interactive serial console access to all VM instances for one or more projects that are part of the organization.
Project owners and editors, as well as users who have been granted the compute.
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