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50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * nodes/nodes-containers-using.adoc
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[id="nodes-containers-using-ssh_{context}"]
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= Opening a Remote Shell to Containers
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The `oc rsh` command allows you to locally access and manage tools that are on
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the system. The secure shell (SSH) is the underlying technology and industry
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standard that provides a secure connection to the application. Access to
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applications with the shell environment is protected and restricted with
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Security-Enhanced Linux (SELinux) policies.
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While in the remote shell, you can issue commands as if you are inside the
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container and perform local operations like monitoring, debugging, and using CLI
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commands specific to what is running in the container.
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For example, in a MySQL container, you can count the number of records in the
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database by invoking the `mysql` command, then using the prompt to type in the `SELECT` command. You can
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also use commands like `ps(1)` and `ls(1)` for validation.
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`*BuildConfigs*` and `*DeployConfigs*` map out how you want things to look and
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pods (with containers inside) are created and dismantled as needed. Your changes
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are not persistent. If you make changes directly within the container and that
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container is destroyed and rebuilt, your changes will no longer exist.
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[NOTE]
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====
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You can use the `oc exec` c to execute a command remotely. However, the `oc rsh` command provides an easier way
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to keep a remote shell open persistently.
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====
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.Procedure
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. Open a console on a system networked to connect to the node where your pod is located.
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. Open a remote shell session to a container:
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+
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----
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$ oc rsh <pod>
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----
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[NOTE]
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====
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For help with usage, options, and to see examples:
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----
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$ oc rsh -h
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----
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====
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