What does SSH agent do?
The SSH agent ( ssh-agent ) is an SSH key manager that stores the SSH key in a process memory so that users can log into SSH servers without having to type the key’s passphrase every time they authenticate with the server.
What is a Jenkins agent?
A Jenkins agent is an executable, residing on a node, that is tasked by the controller to run a job. Managing the different Jenkins agents is the job of the agent controller, also known as the master node. In a single Jenkins node configuration, the controller, can also act as both a Jenkin agent and run build jobs.
How do I connect to remote SSH agent?
Steps
- Log in to the agent machine as $AGENT_USER : sudo su $AGENT_USER.
- Create private and public SSH keys.
- Add the public SSH key to the list of authorized keys on the agent machine cat jenkinsAgent_rsa.pub >> ~/.ssh/authorized_keys.
What is Pubsub in GCP?
Google Cloud Pub/Sub provides messaging between applications. Cloud Pub/Sub is designed to provide reliable, many-to-many, asynchronous messaging between applications. Publisher applications can send messages to a “topic” and other applications can subscribe to that topic to receive the messages.
How is SSH secure?
SSH encrypts and authenticates all connections. SSH provides IT and information security (infosec) professionals with a secure mechanism to manage SSH clients remotely. Rather than requiring password authentication to initialize a connection between an SSH client and server, SSH authenticates the devices themselves.
Why do I need to add SSH key to agent?
Adding SSH keys to the Agent The ssh-add command is used for adding identities to the agent. In the simplest form, just run if without argument to add the default files ~/. ssh/id_rsa , .
What is Jenkins in simple words?
Jenkins is an open source continuous integration/continuous delivery and deployment (CI/CD) automation software DevOps tool written in the Java programming language. It is used to implement CI/CD workflows, called pipelines.
What is the difference between node and agent?
1 Answer. Show activity on this post. The simple answer is, Agent is for declarative pipelines and node is for scripted pipelines. In declarative pipelines the agent directive is used for specifying which agent/slave the job/task is to be executed on.
Is ssh-agent safe?
Agent forwarding comes with a risk When you forward ssh-agent ‘s Unix domain socket to a remote host, it creates a security risk: anyone with root access on the remote host can discreetly access your local SSH agent through the socket. They can use your keys to impersonate you on other machines on the network.
What port does ssh use?
port 22
By default, the SSH server still runs in port 22.
Why Pub-Sub is used?
Pub/Sub allows services to communicate asynchronously, with latencies on the order of 100 milliseconds. Pub/Sub is used for streaming analytics and data integration pipelines to ingest and distribute data.
Is SSH key necessary?
One cannot have confidentiality, integrity, or any guarantees of continued availability of systems without controlling SSH keys. Technically the keys are cryptographic keys using a public key cryptosystem. However, functionally they are authentication credentials and need to be managed as such.
How do Jenkins work?
How Does Jenkins Work? Jenkins triggers a build upon every commit to the source code repository, typically to a development branch. Jenkins can be configured to run an initial suite of unit tests to ensure that the commit did not “break the build”.
Why do we need Jenkins?
Jenkins is an open-source automation tool written in Java with plugins built for Continuous Integration purposes. Jenkins is used to build and test your software projects continuously making it easier for developers to integrate changes to the project, and making it easier for users to obtain a fresh build.
What is an agent node?
A node agent is a lightweight process that is required on every machine that hosts server instances, including the machine that hosts the Domain Administration Server (DAS). The node agent: Starts, stops, creates and deletes server instances as instructed by the Domain Administration Server.
What is a pipeline agent?
Pipeline agent is machine where your build is performed. An agent is installable software that runs one job at a time. Agent job is a set of steps which is recognized as execution boundary. Each job runs on an agent. All of the steps run together on the same agent.
Is ssh-agent Insecure?
When you forward ssh-agent ‘s Unix domain socket to a remote host, it creates a security risk: anyone with root access on the remote host can discreetly access your local SSH agent through the socket. They can use your keys to impersonate you on other machines on the network.
https://www.youtube.com/watch?v=G-FZrYGxJDI