ssh login passwordless script

JIRA: BOTTLENECK-32

Change-Id: I8dca120b3efe55b493b94ac77f95788212eedbc1
Signed-off-by: MatthewLi <matthew.lijun@huawei.com>

diff --git a/utils/infra_setup/passwordless_SSH/README.rst b/utils/infra_setup/passwordless_SSH/README.rst
new file mode 100644 (file)
index 0000000..46a6aaa
--- /dev/null
+++ b/utils/infra_setup/passwordless_SSH/README.rst
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+..
+.. image:: ../etc/opnfv-logo.png
+  :height: 40
+  :width: 200
+  :alt: OPNFV
+  :align: left
+..
+|
+|
+
+how to use the ssh login passwordless script
+============================================
+
+This script helps configure passwordless SSH between two machines.
+
+SCOPE
+The script itself is nothing more than putting in line the few commands needed to set up this rather simple, if annoying, procedure and should keep
+you focusing on the important stuff rather than remembering syntax details.
+
+USAGE
+You must place this script on the client machine and run it. You can provide two arguments on the command line, the first one is the hostname that will
+accept passwordless login and the second one is the username on that machine.
+
+If the second argument is ommited, the username will default to the username on the client machine and if both arguments are omitted, they will be asked interactively.
+
+
+evision: _sha1_
+
+Build date:  |today|
+

diff --git a/utils/infra_setup/passwordless_SSH/set_passwordless_ssh.sh b/utils/infra_setup/passwordless_SSH/set_passwordless_ssh.sh
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+#! /bin/bash
+
+#this script is copied from https://github.com/guioconnor/Passwordless-SSH.
+#the Bottlenecks project needs to set the machines login each other passwordless, this script is appropriate.
+
+filename="id_rsa"
+path="$HOME/.ssh"
+
+if [ $1 ]
+then
+    hostname=$1
+    if [ $2 ]
+    then
+        username=$2
+    else
+        username="$USER"
+    fi
+else
+    # Read the host and username to store public key (the host/username accepting passwordless ssh from this computer)
+    echo "What host you want to grant passwordless SSH from this computer?"
+    read hostname
+    echo "What is your username on $hostname? ($USER?)"
+    read username
+
+    if [ ! $username ]
+    then
+        username="$USER"
+    fi
+fi
+
+
+# Generate rsa files
+if [ -f $path/$filename ]
+then
+    echo "RSA key exists on $path/$filename, using existing file"
+else
+    ssh-keygen -t rsa -f "$path/$filename"
+    echo RSA key pair generated
+fi
+
+echo "We need to log into $hostname as $username to set up your public key (hopefully last time you'll use password from this computer)"
+cat "$path/$filename.pub" | ssh "$hostname" -l "$username" '[ -d .ssh ] || mkdir .ssh; cat >> .ssh/authorized_keys; chmod 700 ~/.ssh; chmod 600 ~/.ssh/authorized_keys'
+status=$?
+
+if [ $status -eq 0 ]
+then
+    echo "Set up complete, try to ssh to $host now"
+    exit 0
+else
+    echo "an error has occured"
+    exit 255
+fi