Enable pty for bootstrap sshbootstrap-uses-pty

This will allow bootstrap to work with systems
that have `requiretty` configured, and is consistent
with the behavior of Chef 14 bootstrap

Signed-off-by: Marc A. Paradise <marc.paradise@gmail.com>

2 files changed, 24 insertions, 14 deletions

diff --git a/lib/chef/knife/bootstrap.rb b/lib/chef/knife/bootstrap.rb
index 1e5580a61d..66d73a3372 100644
--- a/lib/chef/knife/bootstrap.rb
+++ b/lib/chef/knife/bootstrap.rb
@@ -865,6 +865,7 @@ class Chef
       def ssh_opts
         opts = {}
         return opts if winrm?
+        opts[:pty] = true # ensure we can talk to systems with requiretty set true in sshd config
         opts[:non_interactive] = true # Prevent password prompts from underlying net/ssh
         opts[:forward_agent] = (config_value(:ssh_forward_agent) === true)
         opts[:connection_timeout] = session_timeout
diff --git a/spec/unit/knife/bootstrap_spec.rb b/spec/unit/knife/bootstrap_spec.rb
index 5118442327..8467b6dc70 100644
--- a/spec/unit/knife/bootstrap_spec.rb
+++ b/spec/unit/knife/bootstrap_spec.rb
@@ -1015,6 +1015,7 @@ describe Chef::Knife::Bootstrap do
                 verify_host_key: false,
                 port: 9999,
                 non_interactive: true,
+                pty: true,
               }
             end
 
@@ -1069,6 +1070,7 @@ describe Chef::Knife::Bootstrap do
                 verify_host_key: false, # Config
                 port: 12, # cli
                 non_interactive: true,
+                pty: true,
               }
             end
 
@@ -1120,6 +1122,7 @@ describe Chef::Knife::Bootstrap do
                 sudo_password: "blah",
                 verify_host_key: true,
                 non_interactive: true,
+                pty: true,
               }
             end
             it "generates a config hash using the CLI options and pulling nothing from Chef::Config" do
@@ -1143,6 +1146,7 @@ describe Chef::Knife::Bootstrap do
               sudo: false,
               verify_host_key: "always",
               non_interactive: true,
+              pty: true,
               connection_timeout: 60,
             }
           end
@@ -1491,33 +1495,38 @@ describe Chef::Knife::Bootstrap do
 
     context "for ssh" do
       let(:connection_protocol) { "ssh" }
+      let(:default_opts) do
+        {
+          non_interactive: true,
+          pty: true,
+          forward_agent: false,
+          connection_timeout: 60,
+        }
+      end
+
+      context "by default" do
+        it "returns a configuration hash with appropriate defaults" do
+          expect(knife.ssh_opts).to eq default_opts
+        end
+      end
+
       context "when ssh_forward_agent has a value" do
         before do
           knife.config[:ssh_forward_agent] = true
         end
-        it "returns a configuration hash with forward_agent set to true. non-interactive is always true" do
-          expect(knife.ssh_opts).to eq({ forward_agent: true, non_interactive: true, connection_timeout: 60 })
-        end
-      end
-      context "when ssh_forward_agent is not set" do
-        it "returns a configuration hash with forward_agent set to false. non-interactive is always true" do
-          expect(knife.ssh_opts).to eq({ forward_agent: false, non_interactive: true, connection_timeout: 60 })
+        it "returns a default configuration hash with forward_agent set to true" do
+          expect(knife.ssh_opts).to eq(default_opts.merge(forward_agent: true))
         end
       end
       context "when session_timeout has a value" do
         before do
           knife.config[:session_timeout] = 120
         end
-        it "returns a configuration hash with connection_timeout value." do
-          expect(knife.ssh_opts).to eq({ forward_agent: false, non_interactive: true, connection_timeout: 120 })
+        it "returns a default configuration hash with updated timeout value." do
+          expect(knife.ssh_opts).to eq(default_opts.merge(connection_timeout: 120))
         end
       end
 
-      context "when session_timeout is not set" do
-        it "returns a configuration hash with connection_timeout default value." do
-          expect(knife.ssh_opts).to eq({ forward_agent: false, non_interactive: true, connection_timeout: 60 })
-        end
-      end
     end
 
     context "for winrm" do