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Copy file name to clipboardExpand all lines: articles/operator-nexus/howto-baremetal-bmc-ssh.md
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# Manage emergency access to a bare metal machine using the `az networkcloud cluster bmckeyset`
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>[!CAUTION]
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Please note this process is used in emergency situations when all other troubleshooting options have been exhausted via Azure. SSH access to these bare metal machines (BMM) is restricted to users managed via this method from the specified jump host list.
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>[!CAUTION]
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> Please note this process is used in emergency situations when all other troubleshooting options via Azure have been exhausted. SSH access to these bare metal machines (BMM) is restricted to users managed via this method from the specified jump host list.
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There are rare situations where a user needs to investigate & resolve issues with a BMM and all other ways have been exhausted via Azure. Operator Nexus provides the `az networkcloud cluster bmckeyset` command so users can manage SSH access to the baseboard management controller (BMC) on these BMMs.
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There are rare situations where a user needs to investigate & resolve issues with a BMM and all other ways using Azure have been exhausted. Operator Nexus provides the `az networkcloud cluster bmckeyset` command so users can manage SSH access to the baseboard management controller (BMC) on these BMMs.
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When the command runs, it executes on each of BMM in the Cluster. If a BMM is unavailable or powered off at the time of command execution, the status of the command reflects which BMMs couldn't have the command executed. There's a reconciliation process that runs periodically that retries the command on any BMM that wasn't available at the time of the original command. Multiple commands execute in the order received.
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When the command runs, it executes on each BMM in the Cluster. If a BMM is unavailable or powered off at the time of command execution, the status of the command reflects which BMMs couldn't have the command executed. There's a reconciliation process that runs periodically that retries the command on any BMM that wasn't available at the time of the original command. Multiple commands execute in the order received.
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There's a maximum number of 12 users defined per Cluster. Attempts to add more than 12 users results in an error. Delete a user before adding another one when 12 already exists.
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"sshPublicKey":{"keyData":"<SSH Public Key>"}}]' \
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--tags key1=<Key Value> key2=<Key Value> \
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--cluster-name <Cluster Name> \
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--resource-group <Resource Group>
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--resource-group <Resource Group Name>
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```
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### Create Arguments
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"sshPublicKey":{"keyData":"<SSH Public Key>"}}]' \
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# Manage emergency access to a bare metal machine using the `az networkcloud cluster baremetalmachinekeyset`
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>[!CAUTION]
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Please note this process is used in emergency situations when all other troubleshooting options have been exhausted via Azure. SSH access to these bare metal machines (BMM) is restricted to users managed via this method from the specified jump host list.
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>[!CAUTION]
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> Please note this process is used in emergency situations when all other troubleshooting options using Azure have been exhausted. SSH access to these bare metal machines (BMM) is restricted to users managed via this method from the specified jump host list.
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There are rare situations where a user needs to investigate & resolve issues with a BMM and all other ways have been exhausted via Azure. Azure Operator Nexus provides the `az networkcloud cluster baremetalmachinekeyset` command so users can manage SSH access to these BMM.
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When the command runs, it executes on each BMM in the Cluster. If a BMM is unavailable or powered off at the time of command execution, the status of the command reflects which BMMs couldn't have the command executed. There is a reconciliation process that runs periodically that retries the command on any BMM that wasn't available at the time of the original command. Multiple commands execute in the order received.
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There's no limit to the number of users in a group.
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>[!CAUTION]
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Notes for jump host IP addresses
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>[!CAUTION]
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> Notes for jump host IP addresses
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- The keyset create/update process adds the jump host IP addresses to the IP tables for the Cluster. The process adds these addresses to IP tables and restricts SSH access to only those IPs.
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- It's important to specify the Cluster facing IP addresses for the jump hosts. These IP addresses may be different than the public facing IP address used to access the jump host.
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