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What is the biggest disadvantage of Ansible?
sobes.tech AI
Answer from AI
The most significant drawback of Ansible is its performance when working with large infrastructures. Unlike agent-based solutions (such as Chef or Puppet), Ansible relies on SSH connections. This means that for each operation, Ansible establishes a new SSH connection with each managed node.
Problems associated with this:
- Load on the control node: The control server, from which playbooks are run, must establish and maintain multiple SSH connections simultaneously.
- Load on remote nodes: Each node handles incoming SSH connections and module execution. This can create load spikes, especially when running in parallel on many nodes.
- Delays: Establishing an SSH connection takes time, which slows down task execution compared to agents that maintain a constant connection or use other protocols.
- Lack of persistent state: Ansible is stateless in terms of long-running background processes. It performs an operation and ends the session. For complex monitoring scenarios or continuous synchronization, this is less efficient than an agent that can constantly monitor the system's state.
Although Ansible has optimization capabilities (pipelining, fact caching), its fundamental SSH-based working model limits its scalability compared to agent-based solutions when managing a very large number of nodes simultaneously.