title: Chef bootstrapping new node Failed to authenticate to the chef server (http 401)
body: <p>I have a Chef server on a CentOS 6. I have about 92 nodes bootstrapped already. The problem started today when I tried to bootstrap a new node (CentOS 6).
  The command I run is:</p>
  
  <pre><code>knife bootstrap node10 -N node10 -x user -P 'password' --sudo
  </code></pre>
  
  <p>The output is as follow:</p>
  
  <pre><code>node10 warning: /tmp/install.sh.1137/chef-12.5.1-1.el6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 52ff435y: NOKEY
  
  node10 Preparing...  ########################################### [100%]
  
  node10    1:chef     ########################################### [100%]
  
  node10 Thank you for installing Chef!
  
  node10 Starting first Chef Client run...
  
  node10 Starting Chef Client, version 12.5.1
  
  node10 Creating a new client identity for node10 using the validator key.
  
  
  node10 =========================================================
  
  node10 Chef encountered an error attempting to create the client "node10"
  
  node10 =========================================================
  
  node10 Authentication Error:
  
  node10 Failed to authenticate to the chef server (http 401).
  
  
  node10 Server Response:
  
  
  node10 Invalid signature for user or client 'org-validator'
  
  
  node10 Relevant Config Settings:
  
  
  node10 chef_server_url         "https://chef01.corp/organizations/devdept"
  
  node10 validation_client_name  "org-validator"
  
  node10 validation_key          "/etc/chef/validation.pem"
  
  
  node10 If these settings are correct, your validation_key may be invalid.
  
  node10 Running handlers:
  
  node10 [2015-12-15T18:11:13+02:00] ERROR: Running exception handlers
  
  node10 Running handlers complete
  
  node10 [2015-12-15T18:11:13+02:00] ERROR: Exception handlers complete
  
  node10 Chef Client failed. 0 resources updated in 13 minutes 48 seconds
  
  node10 [2015-12-15T18:11:13+02:00] FATAL: Stacktrace dumped to /var/chef/cache/chef-stacktrace.out
  
  node10 [2015-12-15T18:11:13+02:00] ERROR: 401 "Unauthorized"
  
  node10 [2015-12-15T18:11:13+02:00] FATAL: Chef::Exceptions::ChildConvergeError: 
  Chef run process exited unsuccessfully (exit code 1)
  </code></pre>
  
  <p>What is there to be done?
  As I was saying, the machine is brand new.</p>
  
  <p>Thank you,
  Gabriel</p>