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@atl atl/launcher.ipynb
Last active Dec 14, 2015

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This is a IPython Notebook on how to provision an IPython Cluster on the Joyent Public Cloud. It is a companion for this blog post: http://atl.me/2013/joyent-ipython-cluster . It may be viewed on the Notebook Viewer: http://nbviewer.ipython.org/5107045 .
{
"metadata": {
"name": "launcher"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"This Notebook is an example session launching a sample IPython cluster in the Joyent Public Cloud.\n",
"\n",
"It is a part of a blog post on [automatic deployment of an IPython parallel compute cluster on Joyent](http://atl.me/2013/joyent-ipython-cluster), so contextual details are there.\n",
"\n",
"You should install the Python [SmartDC](http://pypi.python.org/pypi/smartdc) libraries first with:\n",
"\n",
" pip install smartdc"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import time, sys\n",
"import json\n",
"from smartdc import DataCenter\n",
"import paramiko"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 1
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Select your datacenter, select your username and key identifier:"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"sdc = DataCenter('eu-ams-1', key_id='/username/keys/keyname', verbose=True)"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 2
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"I chose the most up-to-date base 64-bit image and the smallest package available.\n",
"\n",
"The boot script is available on [this gist](https://gist.github.com/atl/5106787). "
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"ipc = sdc.create_machine(dataset='sdc:sdc:base64:', package='Extra Small 512 MB', \n",
" tags={'cluster': 'ipython', 'role': 'controller'},\n",
" boot_script='./startup-controller.sh', name='ipcontroller')\n",
"ipc.poll_until('running')"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:07:49.372832\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines\n",
"2013-03-07T10:07:58.617559\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:02.459808\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:05.942330\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:09.668697\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:13.213666\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:16.890286\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:20.323838\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:23.840497\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:27.553048\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:08:31.015873\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"This function is a roadblock, pausing further operation until the boot script completely finishes running, and we have some confidence that the controller\u2019s engine configurations have been written."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def wait_for_svc(connection, fmri, interval=3, timeout=315):\n",
" SERVICE_POLL = 'svcs -H -o STA,NSTA %s' % fmri\n",
" for _ in xrange(timeout//interval):\n",
" states = tuple(connection.exec_command(SERVICE_POLL)[1].read().strip().split())\n",
" if states == ('ON', '-'):\n",
" print >>sys.stderr\n",
" return True\n",
" elif states == ('MNT', '-'):\n",
" raise StandardError('Bootscript failed: now in maintenance mode')\n",
" elif states == ('OFF', 'ON'):\n",
" # heartbeat\n",
" print >>sys.stderr, '.',\n",
" else:\n",
" # slightly unusual state\n",
" print >>sys.stderr, '?',\n",
" time.sleep(interval)\n",
" raise StandardError('Timeout')\n"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 4
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"ssh_conn = paramiko.SSHClient()\n",
"ssh_conn.set_missing_host_key_policy(paramiko.AutoAddPolicy())\n",
"ssh_conn.connect(ipc.public_ips[0], username='root')"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 6
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"wait_for_svc(ssh_conn, 'svc:/smartdc/mdata:execute')"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n"
]
},
{
"output_type": "pyout",
"prompt_number": 7,
"text": [
"True"
]
}
],
"prompt_number": 7
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"The key command in this sequence is the following, where we retrieve the metadata that the engines need in order to connect to the engine."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"_, rout, _ = ssh_conn.exec_command('cat /opt/local/share/ipython/profile_default/security/ipcontroller-engine.json')\n",
"ipcontroller = json.load(rout)"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 8
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"This is similar to the controller provisioning, except that it uses the engine boot script from the gist linked above, it defines a different role, and doesn't bother naming the engines."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"for _ in xrange(4):\n",
" sdc.create_machine(dataset='sdc:sdc:base64:', \n",
" package='Extra Small 512 MB', \n",
" metadata={'ipython.url': ipcontroller['url'], \n",
" 'ipython.key': ipcontroller['exec_key']},\n",
" tags={'cluster': 'ipython', 'role': 'engine'}, \n",
" boot_script='./startup-engine.sh')"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:11:45.336342\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines\n",
"2013-03-07T10:12:13.032310\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:12:19.690627\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:12:26.242430\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"ipc.public_ips"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "pyout",
"prompt_number": 10,
"text": [
"[u'37.153.99.232']"
]
}
],
"prompt_number": 10
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"ssh_conn.close()"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 11
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"At this point, you could SSH into the IPython Controller node, and test your cluster. Note that the `IPYTHONDIR` environment variable should be set to `/opt/local/share/ipython`."
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"---\n",
"\n",
"Once you have finished with the cluster, you will want to shut it down at some point. Here is a convenient way to delete the entire cluster:"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"cluster = sdc.machines(tags={'cluster': 'ipython'})\n",
"cluster"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:12:33.045438\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines\n"
]
},
{
"output_type": "pyout",
"prompt_number": 12,
"text": [
"[<smartdc.machine.Machine: <ipcontroller> in <DataCenter: eu-ams-1>>,\n",
" <smartdc.machine.Machine: <4eac1ad> in <DataCenter: eu-ams-1>>,\n",
" <smartdc.machine.Machine: <d8f2ae6> in <DataCenter: eu-ams-1>>,\n",
" <smartdc.machine.Machine: <19666c2> in <DataCenter: eu-ams-1>>,\n",
" <smartdc.machine.Machine: <873fde1> in <DataCenter: eu-ams-1>>]"
]
}
],
"prompt_number": 12
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from operator import methodcaller"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 13
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"map(methodcaller('stop'), cluster)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:19:18.615269\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7\n",
"2013-03-07T10:19:22.007255\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c767e541-25a9-48c7-af2c-292a78489d7d"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:23.819118\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines/89b08e35-a7c5-44fc-90be-7056e802bdde"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:25.664591\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines/193f2748-7e7c-483d-8dde-3ffc73b1ed03"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:27.198584\tPOST\thttps://eu-ams-1.api.joyentcloud.com/my/machines/cc8addf7-baeb-4913-8f4b-5a0ba3aa4f76"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n"
]
},
{
"output_type": "pyout",
"prompt_number": 14,
"text": [
"[None, None, None, None, None]"
]
}
],
"prompt_number": 14
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"map(methodcaller('poll_until', 'stopped'), cluster)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:19:28.741289\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7\n",
"2013-03-07T10:19:32.274923\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:35.843260\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:37.647634\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c767e541-25a9-48c7-af2c-292a78489d7d"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:39.183008\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/89b08e35-a7c5-44fc-90be-7056e802bdde"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:40.722421\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/193f2748-7e7c-483d-8dde-3ffc73b1ed03"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:42.255855\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines/cc8addf7-baeb-4913-8f4b-5a0ba3aa4f76"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n"
]
},
{
"output_type": "pyout",
"prompt_number": 15,
"text": [
"[None, None, None, None, None]"
]
}
],
"prompt_number": 15
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"map(methodcaller('delete'), cluster)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:19:43.798491\tDELETE\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c8be2243-ae5d-413d-a568-d73ac9e07ff7\n",
"2013-03-07T10:19:45.330310\tDELETE\thttps://eu-ams-1.api.joyentcloud.com/my/machines/c767e541-25a9-48c7-af2c-292a78489d7d"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:46.698550\tDELETE\thttps://eu-ams-1.api.joyentcloud.com/my/machines/89b08e35-a7c5-44fc-90be-7056e802bdde"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:48.107172\tDELETE\thttps://eu-ams-1.api.joyentcloud.com/my/machines/193f2748-7e7c-483d-8dde-3ffc73b1ed03"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n",
"2013-03-07T10:19:49.630606\tDELETE\thttps://eu-ams-1.api.joyentcloud.com/my/machines/cc8addf7-baeb-4913-8f4b-5a0ba3aa4f76"
]
},
{
"output_type": "stream",
"stream": "stderr",
"text": [
"\n"
]
},
{
"output_type": "pyout",
"prompt_number": 16,
"text": [
"[None, None, None, None, None]"
]
}
],
"prompt_number": 16
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"sdc.machines()"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stderr",
"text": [
"2013-03-07T10:20:15.112498\tGET\thttps://eu-ams-1.api.joyentcloud.com/my/machines\n"
]
},
{
"output_type": "pyout",
"prompt_number": 18,
"text": [
"[]"
]
}
],
"prompt_number": 18
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
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