Launching the python API and viewing "Fatal error: Incompatible ssh-peer (without an acceptable kex algorithm)" on the host "a-stor1", but works fine on "rack1-app1". The only difference that I see is that "rack1-app1" is running openssl 1.0.1-4ubuntu5.3, and "a-stor1" is running 1.0.1-4ubuntu5.21.
Brians-MacBook-Pro:initial bohalloran$ python tests/test_fabric.py [rack1-app1] Executing task 'testIt' [rack1-app1] run: uptime [rack1-app1] out: 13:07:43 up 24 days, 19:18, 1 user, load average: 0.07, 0.05, 0.05 [rack1-app1] out: [a-stor1] Executing task 'testIt' [a-stor1] run: uptime ERROR:paramiko.transport:Exception: Incompatible ssh peer (no acceptable kex algorithm) ERROR:paramiko.transport:Traceback (most recent call last): ERROR:paramiko.transport: File "/Library/Python/2.7/site-packages/paramiko/transport.py", line 1614, in run ERROR:paramiko.transport: self._handler_tableptype ERROR:paramiko.transport: File "/Library/Python/2.7/site-packages/paramiko/transport.py", line 1694, in _negotiate_keys ERROR:paramiko.transport: self._parse_kex_init(m) ERROR:paramiko.transport: File "/Library/Python/2.7/site-packages/paramiko/transport.py", line 1809, in _parse_kex_init ERROR:paramiko.transport: raise SSHException('Incompatible ssh peer (no acceptable kex algorithm)') ERROR:paramiko.transport:SSHException: Incompatible ssh peer (no acceptable kex algorithm) ERROR:paramiko.transport: Fatal error: Incompatible ssh peer (no acceptable kex algorithm) Underlying exception: Incompatible ssh peer (no acceptable kex algorithm) Aborting. Incompatible ssh peer (no acceptable kex algorithm) Underlying exception: Incompatible ssh peer (no acceptable kex algorithm) Brians-MacBook-Pro:initial bohalloran$ cat tests/test_fabric.py from fabric.api import env, run, prefix, hide, settings from fabric import tasks import logging env.hosts = ['rack1-app1', 'a-stor1'] env.user = 'storiant' env.password = 'ST0r!ant' logging.basicConfig() cmd = 'uptime' def main(): tasks.execute(testIt) def testIt(): with settings(warn_only = True): run(cmd) if name == "main": main() Brians-MacBook-Pro:initial bohalloran$ Brians-MacBook-Pro:initial bohalloran$ python Python 2.7.6 (default, Sep 9 2014, 15:04:36) [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin Type "help", "copyright", "credits" or "license" for more information. import paramiko print paramiko.version 1.15.2 ^D Brians-MacBook-Pro:initial bohalloran$ Brians-MacBook-Pro:initial bohalloran$ openssl version OpenSSL 0.9.8zd 8 Jan 2015 Brians-MacBook-Pro:initial bohalloran$ storiant@Rack1-app1 :~$ openssl version OpenSSL 1.0.1 14 Mar 2012 storiant@Rack1-app1 :~$ storiant@a-stor1 :~$ openssl version OpenSSL 1.0.1 14 Mar 2012 storiant@a-stor1 :~$ st oriant@a-stor1 :~$ dpkg -l | grep libgnutls ii libgnutls26 2.12.14-5ubuntu3.1 GNU TLS library - runtime library storiant@a-stor1 :~$ dpkg -l | grep openssl ii libevent-openssl-2.0-5 2.0.16-stable-1ubuntu0.1 Asynchronous event notification library (openssl) ii openssl 1.0.1-4ubuntu5.21 Secure Socket Layer (SSL) binary and related cryptographic tools storiant@a-stor1 :~$ storiant@Rack1-app1 :~$ dpkg -l | grep libgnutls ii libgnutls26 2.12.14-5ubuntu3.1 GNU TLS library - runtime library storiant@Rack1-app1 :~$ dpkg -l | grep openssl ii libevent-openssl-2.0-5 2.0.16-stable-1 Asynchronous event notification library (openssl) ii openssl 1.0.1-4ubuntu5.3 Secure Socket Layer (SSL) binary and related cryptographic tools storiant@Rack1-app1 :~$ storiant@Rack1-app1 :~$ uname -a Linux Rack1-app1 3.2.0-58-generic
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