class LocalFabric(object):
def __init__(self, bootstrap=False):
self.name = "local"
self.repo = 'public'
self.cli = DockerCLI(ferry.install.DOCKER_REGISTRY)
self.docker_user = self.cli.docker_user
self.inspector = DockerInspector(self.cli)
self.bootstrap = bootstrap
# The system returns information regarding
# the instance types.
self.system = System()
# Bootstrap mode means that the DHCP network
# isn't available yet, so we can't use the network.
if not bootstrap:
self.network = DHCPClient(ferry.install._get_gateway())
def _get_host(self):
cmd = "ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'"
return Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
def get_data_dir(self):
if 'FERRY_SCRATCH' in os.environ:
scratch_dir = os.environ['FERRY_SCRATCH']
else:
scratch_dir = os.path.join(
ferry.install._get_ferry_dir(server=True), 'scratch')
if not os.path.isdir(scratch_dir):
os.makedirs(scratch_dir)
return scratch_dir
def version(self):
"""
Fetch the current docker version.
"""
return self.cli.version()
def get_fs_type(self):
"""
Get the filesystem type associated with docker.
"""
return self.cli.get_fs_type()
def quit(self):
"""
Quit the local fabric.
"""
logging.info("quitting local fabric")
def restart(self, cluster_uuid, service_uuid, containers):
"""
Restart the stopped containers.
"""
new_containers = []
for c in containers:
container = self.cli.start(image=c.image,
container=c.container,
service_type=c.service_type,
keydir=c.keydir,
keyname=c.keyname,
privatekey=c.privatekey,
volumes=c.volumes,
args=c.args,
inspector=self.inspector)
container.default_user = self.docker_user
new_containers.append(container)
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
return new_containers
def alloc(self, cluster_uuid, service_uuid, container_info, ctype):
"""
Allocate several instances.
"""
containers = []
mounts = {}
for c in container_info:
# Get a new IP address for this container and construct
# a default command.
gw = ferry.install._get_gateway().split("/")[0]
# Check if we should use the manual LXC option.
if not 'netenable' in c:
ip = self.network.assign_ip(c)
lxc_opts = [
"lxc.network.type = veth",
"lxc.network.ipv4 = %s/24" % ip,
"lxc.network.ipv4.gateway = %s" % gw,
"lxc.network.link = ferry0", "lxc.network.name = eth0",
"lxc.network.flags = up"
]
# Check if we need to forward any ports.
host_map = {}
for p in c['ports']:
p = str(p)
s = p.split(":")
if len(s) > 1:
host = s[0]
dest = s[1]
else:
host = self.network.random_port()
dest = s[0]
host_map[dest] = [{'HostIp': '0.0.0.0', 'HostPort': host}]
self.network.forward_rule('0.0.0.0/0', host, ip, dest)
host_map_keys = host_map.keys()
else:
lxc_opts = None
host_map = None
host_map_keys = []
# Start a container with a specific image, in daemon mode,
# without TTY, and on a specific port
if not 'default_cmd' in c:
c['default_cmd'] = "/service/sbin/startnode init"
container = self.cli.run(service_type=c['type'],
image=c['image'],
volumes=c['volumes'],
keydir=c['keydir'],
keyname=c['keyname'],
privatekey=c['privatekey'],
open_ports=host_map_keys,
host_map=host_map,
expose_group=c['exposed'],
hostname=c['hostname'],
default_cmd=c['default_cmd'],
args=c['args'],
lxc_opts=lxc_opts,
inspector=self.inspector,
background=False)
if container:
container.default_user = self.docker_user
containers.append(container)
if not 'netenable' in c:
container.internal_ip = ip
container.external_ip = ip
self.network.set_owner(ip, container.container)
if 'name' in c:
container.name = c['name']
if 'volume_user' in c:
mounts[container] = {
'user': c['volume_user'],
'vols': c['volumes'].items()
}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(3)
# Check if we need to set the file permissions
# for the mounted volumes.
for c, i in mounts.items():
for _, v in i['vols']:
self.cmd([c], 'chown -R %s %s' % (i['user'], v))
return containers
def stop(self, cluster_uuid, service_uuid, containers):
"""
Forceably stop the running containers
"""
for c in containers:
if type(c) is dict:
self.cli.stop(c['container'])
else:
self.cli.stop(c.container)
def remove(self, cluster_uuid, service_uuid, containers):
"""
Remove the running instances
"""
for c in containers:
for p in c.ports.keys():
self.network.delete_rule(c.internal_ip, p)
self.network.free_ip(c.internal_ip)
self.cli.remove(c.container)
def snapshot(self, containers, cluster_uuid, num_snapshots):
"""
Save/commit the running instances
"""
snapshots = []
for c in containers:
snapshot_name = '%s-%s-%s:SNAPSHOT-%s' % (
c.image, cluster_uuid, c.host_name, num_snapshots)
snapshots.append({
'image': snapshot_name,
'base': c.image,
'type': c.service_type,
'name': c.name,
'args': c.args,
'ports': c.ports
})
self.cli.commit(c, snapshot_name)
return snapshots
def push(self, image, registry=None):
"""
Push an image to a remote registry.
"""
return self.cli.push(image, registry)
def pull(self, image):
"""
Pull a remote image to the local registry.
"""
return self.cli.pull(image)
def halt(self, cluster_uuid, service_uuid, containers):
"""
Safe stop the containers.
"""
cmd = '/service/sbin/startnode halt'
for c in containers:
self.cmd_raw(c.privatekey, c.internal_ip, cmd, c.default_user)
def copy(self, containers, from_dir, to_dir):
"""
Copy over the contents to each container
"""
for c in containers:
self.copy_raw(c.privatekey, c.internal_ip, from_dir, to_dir,
c.default_user)
def copy_raw(self, key, ip, from_dir, to_dir, user):
if key:
opts = '-o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
scp = 'scp ' + opts + ' -i ' + key + ' -r ' + from_dir + ' ' + user + '@' + ip + ':' + to_dir
logging.warning(scp)
robust_com(scp)
def cmd(self, containers, cmd):
"""
Run a command on all the containers and collect the output.
"""
all_output = {}
for c in containers:
output = self.cmd_raw(c.privatekey, c.internal_ip, cmd,
c.default_user)
if output.strip() != "":
all_output[c.host_name] = output.strip()
return all_output
def cmd_raw(self, key, ip, cmd, user):
if key:
ip = user + '@' + ip
ssh = 'LC_ALL=C && ssh -o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
out, _, _ = robust_com(ssh)
return out
else:
return ''
def login(self):
"""
Login to a remote registry. Use the login credentials
found in the user's home directory.
"""
config = ferry.install.read_ferry_config()
args = config['docker']
if all(k in args for k in ("user", "password", "email")):
if 'server' in args:
server = args['server']
else:
server = ''
return self.cli.login(user=args['user'],
password=args['password'],
email=args['email'],
registry=server)
logging.error("Could not open login credentials " +
ferry.install.DEFAULT_LOGIN_KEY)
return False
class DockerFabric(object):
def __init__(self):
self.repo = 'public'
self.docker_user = '******'
self.cli = DockerCLI()
"""
Read the location of the directory containing the keys
used to communicate with the containers.
"""
def _read_key_dir(self):
f = open(ferry.install.DEFAULT_DOCKER_KEY, 'r')
return f.read().strip()
"""
Fetch the current docker version.
"""
def version(self):
return self.cli.version()
"""
Get the filesystem type associated with docker.
"""
def get_fs_type(self):
return self.cli.get_fs_type()
"""
Restart the stopped containers.
"""
def restart(self, container_info):
container = self.cli.start(container_info['container'],
container_info['type'],
container_info['args'])
container.default_user = self.docker_user
return container
"""
Allocate several instances.
"""
def alloc(self, container_info):
containers = []
mounts = {}
for c in container_info:
# Start a container with a specific image, in daemon mode,
# without TTY, and on a specific port
container = self.cli.run(service_type = c['type'],
image = c['image'],
volumes = c['volumes'],
keys = c['keys'],
phys_net = None,
security_group = c['ports'],
expose_group = c['exposed'],
hostname = c['hostname'],
args= c['args'])
container.default_user = self.docker_user
containers.append(container)
# Not all containers have a unique name.
if 'name' in c:
container.name = c['name']
if 'volume_user' in c:
mounts[container] = {'user':c['volume_user'],
'vols':c['volumes'].items()}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
# Check if we need to set the file permissions
# for the mounted volumes.
for c, i in mounts.items():
for _, v in i['vols']:
self.cmd([c], 'chown -R %s %s' % (i['user'], v))
return containers
"""
Stop the running instances
"""
def stop(self, containers):
for c in containers:
self.cli.stop(c.container)
"""
Remove the running instances
"""
def remove(self, containers):
for c in containers:
self.cli.remove(c.container)
"""
Save/commit the running instances
"""
def snapshot(self, containers, cluster_uuid, num_snapshots):
snapshots = []
for c in containers:
snapshot_name = '%s-%s-%s:SNAPSHOT-%s' % (c.image,
cluster_uuid,
c.host_name,
num_snapshots)
snapshots.append( {'image' : snapshot_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args} )
self.cli.commit(c, snapshot_name)
return snapshots
"""
Upload these containers to the specified registry.
"""
def deploy(self, containers, registry=None):
deployed = []
for c in containers:
image_name = '%s-%s:DEPLOYED' % (c.image,
c.host_name)
deployed.append( {'image' : image_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args} )
if not registry:
self.cli.commit(c, image_name)
else:
self.cli.push(c, registry)
return deployed
"""
Copy over the contents to each container
"""
def copy(self, containers, from_dir, to_dir):
for c in containers:
opts = '-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
key = '-i ' + self._read_key_dir() + '/id_rsa'
scp_cmd = 'scp ' + opts + ' ' + key + ' -r ' + from_dir + ' ' + self.docker_user + '@' + c.internal_ip + ':' + to_dir
output = Popen(scp_cmd, stdout=PIPE, shell=True).stdout.read()
"""
Run a command on all the containers and collect the output.
"""
def cmd(self, containers, cmd):
all_output = {}
key = self._read_key_dir() + '/id_rsa'
for c in containers:
ip = self.docker_user + '@' + c.internal_ip
ssh = 'ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
output = Popen(ssh, stdout=PIPE, shell=True).stdout.read()
all_output[c] = output.strip()
return all_output
class DockerFabric(object):
def __init__(self, bootstrap=False):
self.repo = 'public'
self.docker_user = '******'
self.cli = DockerCLI(ferry.install.DOCKER_REGISTRY)
self.bootstrap = bootstrap
# Bootstrap mode means that the DHCP network
# isn't available yet, so we can't use the network.
if not bootstrap:
self.network = DHCPClient(self._get_gateway())
def _get_gateway(self):
"""
Get the gateway address in CIDR notation. This defines the
range of IP addresses available to the containers.
"""
cmd = "LC_MESSAGES=C ifconfig drydock0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'"
gw = Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
cmd = "LC_MESSAGES=C ifconfig drydock0 | grep 'inet addr:' | cut -d: -f4 | awk '{ print $1}'"
netmask = Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
mask = map(int, netmask.split("."))
cidr = 1
if mask[3] == 0:
cidr = 8
if mask[2] == 0:
cidr *= 2
return "%s/%d" % (gw, 32 - cidr)
def _get_host(self):
cmd = "ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'"
return Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
def _read_key_dir(self):
"""
Read the location of the directory containing the keys
used to communicate with the containers.
"""
keydir = ferry.install._get_key_dir(root=self.bootstrap, server=True)
with open(keydir, 'r') as f:
k = f.read().strip().split("://")
return k[1], k[0]
def version(self):
"""
Fetch the current docker version.
"""
return self.cli.version()
def get_fs_type(self):
"""
Get the filesystem type associated with docker.
"""
return self.cli.get_fs_type()
def restart(self, containers):
"""
Restart the stopped containers.
"""
new_containers = []
for c in containers:
container = self.cli.start(c.container,
c.service_type,
c.keys,
c.volumes,
c.args)
container.default_user = self.docker_user
new_containers.append(container)
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
return new_containers
def alloc(self, container_info):
"""
Allocate several instances.
"""
containers = []
mounts = {}
for c in container_info:
# Get a new IP address for this container and construct
# a default command.
gw = self._get_gateway().split("/")[0]
# Check if we should use the manual LXC option.
if not 'netenable' in c:
ip = self.network.assign_ip(c)
lxc_opts = ["lxc.network.type = veth",
"lxc.network.ipv4 = %s/24" % ip,
"lxc.network.ipv4.gateway = %s" % gw,
"lxc.network.link = drydock0",
"lxc.network.name = eth0",
"lxc.network.flags = up"]
# Check if we need to forward any ports.
host_map = {}
for p in c['ports']:
p = str(p)
s = p.split(":")
if len(s) > 1:
host = s[0]
dest = s[1]
else:
host = self.network.random_port()
dest = s[0]
host_map[dest] = [{'HostIp' : '0.0.0.0',
'HostPort' : host}]
self.network.forward_rule('0.0.0.0/0', host, ip, dest)
host_map_keys = host_map.keys()
else:
lxc_opts = None
host_map = None
host_map_keys = []
# Start a container with a specific image, in daemon mode,
# without TTY, and on a specific port
c['default_cmd'] = "/service/sbin/startnode init"
container = self.cli.run(service_type = c['type'],
image = c['image'],
volumes = c['volumes'],
keys = c['keys'],
open_ports = host_map_keys,
host_map = host_map,
expose_group = c['exposed'],
hostname = c['hostname'],
default_cmd = c['default_cmd'],
args= c['args'],
lxc_opts = lxc_opts)
if container:
container.default_user = self.docker_user
containers.append(container)
if not 'netenable' in c:
container.internal_ip = ip
self.network.set_owner(ip, container.container)
if 'name' in c:
container.name = c['name']
if 'volume_user' in c:
mounts[container] = {'user':c['volume_user'],
'vols':c['volumes'].items()}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
# Check if we need to set the file permissions
# for the mounted volumes.
for c, i in mounts.items():
for _, v in i['vols']:
self.cmd([c], 'chown -R %s %s' % (i['user'], v))
return containers
def stop(self, containers):
"""
Forceably stop the running containers
"""
for c in containers:
self.cli.stop(c['container'])
def remove(self, containers):
"""
Remove the running instances
"""
for c in containers:
for p in c.ports.keys():
self.network.delete_rule(c.internal_ip, p)
self.network.free_ip(c.internal_ip)
self.cli.remove(c.container)
def snapshot(self, containers, cluster_uuid, num_snapshots):
"""
Save/commit the running instances
"""
snapshots = []
for c in containers:
snapshot_name = '%s-%s-%s:SNAPSHOT-%s' % (c.image,
cluster_uuid,
c.host_name,
num_snapshots)
snapshots.append( {'image' : snapshot_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args,
'ports': c.ports} )
self.cli.commit(c, snapshot_name)
return snapshots
def deploy(self, containers, registry=None):
"""
Upload these containers to the specified registry.
"""
deployed = []
for c in containers:
image_name = '%s-%s:DEPLOYED' % (c.image,
c.host_name)
deployed.append( {'image' : image_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args,
'ports': c.ports} )
if not registry:
self.cli.commit(c, image_name)
else:
self.cli.push(c.image, registry)
return deployed
def push(self, image, registry=None):
"""
Push an image to a remote registry.
"""
return self.cli.push(image, registry)
def pull(self, image):
"""
Pull a remote image to the local registry.
"""
return self.cli.pull(image)
def halt(self, containers):
"""
Safe stop the containers.
"""
cmd = '/service/sbin/startnode halt'
for c in containers:
self.cmd_raw(c.internal_ip, cmd)
def copy(self, containers, from_dir, to_dir):
"""
Copy over the contents to each container
"""
for c in containers:
self.copy_raw(c.internal_ip, from_dir, to_dir)
def copy_raw(self, ip, from_dir, to_dir):
keydir, _ = self._read_key_dir()
opts = '-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
key = '-i ' + keydir + '/id_rsa'
scp = 'scp ' + opts + ' ' + key + ' -r ' + from_dir + ' ' + self.docker_user + '@' + ip + ':' + to_dir
logging.warning(scp)
output = Popen(scp, stdout=PIPE, shell=True).stdout.read()
def cmd(self, containers, cmd):
"""
Run a command on all the containers and collect the output.
"""
all_output = {}
for c in containers:
output = self.cmd_raw(c.internal_ip, cmd)
all_output[c.host_name] = output.strip()
return all_output
def cmd_raw(self, ip, cmd):
keydir, _ = self._read_key_dir()
key = keydir + '/id_rsa'
ip = self.docker_user + '@' + ip
ssh = 'ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
output = Popen(ssh, stdout=PIPE, shell=True).stdout.read()
return output
def login(self):
"""
Login to a remote registry. Use the login credentials
found in the user's home directory.
"""
with open(ferry.install.DEFAULT_DOCKER_LOGIN, 'r') as f:
args = yaml.load(f)
args = args['docker']
if all(k in args for k in ("user","password","email")):
if 'server' in args:
server = args['server']
else:
server = ''
return self.cli.login(user = args['user'],
password = args['password'],
email = args['email'],
registry = server)
logging.error("Could not open login credentials " + ferry.install.DEFAULT_LOGIN_KEY)
return False
class CloudFabric(object):
def __init__(self, bootstrap=False):
self.name = "cloud"
self.repo = 'public'
self._init_cloudfabric()
self.bootstrap = bootstrap
self.cli = DockerCLI()
self.cli.key = self.launcher._get_host_key()
self.docker_user = self.cli.docker_user
self.inspector = CloudInspector(self)
# The system returns information regarding
# the instance types.
self.system = self.launcher.system
def _load_class(self, class_name):
"""
Dynamically load a class
"""
s = class_name.split("/")
module_path = s[0]
clazz_name = s[1]
module = importlib.import_module(module_path)
for n, o in inspect.getmembers(module):
if inspect.isclass(o):
if o.__module__ == module_path and o.__name__ == clazz_name:
return o(self)
return None
def _init_cloudfabric(self):
conf = ferry.install.read_ferry_config()
# The actual cloud launcher. This lets us customize
# launching into different cloud environments that each
# may be slightly different (HP Cloud, Rackspace, etc).
launcher = conf["system"]["mode"]
self.launcher = self._load_class(launcher)
# Determine if we are using this fabric in proxy
# mode. Proxy mode means that the client is external
# to the network, but controller has direct access.
self.proxy = bool(conf["system"]["proxy"])
# Check if the launcher supports proxy mode.
if self.proxy and not self.launcher.support_proxy():
logging.error("%s does not support proxy mode" %
self.launcher.name)
def get_data_dir(self):
return "/ferry/data"
def version(self):
"""
Fetch the current docker version.
"""
return "0.1"
def get_fs_type(self):
"""
Get the filesystem type associated with docker.
"""
return "xfs"
def quit(self):
"""
Quit the cloud fabric.
"""
logging.info("quitting cloud fabric")
self.launcher.quit()
def restart(self, cluster_uuid, service_uuid, containers):
"""
Restart the stopped containers.
"""
# First need to restart all the virtual machines.
logging.warning("restarting virtual machines...")
addrs = self.launcher._restart_stack(cluster_uuid, service_uuid)
# Then need to restart Ferry on all the hosts.
logging.warning("restarting ferry...")
cmd = "source /etc/profile && ferry server -n"
for ip in addrs:
output, err, _ = self.cmd_raw(self.cli.key, ip, cmd,
self.docker_user)
# Finally, restart the stopped containers.
logging.warning("restarting containers...")
cmd = "cat /ferry/containers/container.pid && rm /ferry/containers/container.pid"
for c in containers:
# Before restarting the containers, we need to learn their
# container IDs. It should be stored on a cidfile.
output, err, _ = self.cmd_raw(self.cli.key, c.external_ip, cmd,
self.launcher.ssh_user)
c.container = output.strip()
self.cli.start(image=c.image,
container=c.container,
service_type=c.service_type,
keydir=c.keydir,
keyname=c.keyname,
privatekey=c.privatekey,
volumes=c.volumes,
args=c.args,
server=c.external_ip,
user=self.launcher.ssh_user,
inspector=self.inspector,
background=True)
return containers
def _copy_public_keys(self, container, server):
"""
Copy over the public ssh key to the server so that we can start the
container correctly.
"""
keydir = container['keydir'].values()[0]
self.copy_raw(key=self.cli.key,
ip=server,
from_dir=keydir + "/" + container["keyname"],
to_dir="/ferry/keys/",
user=self.launcher.ssh_user)
def _verify_public_keys(self, server):
"""
Verify that the public key has been copied over correctly.
"""
out, _, _ = self.cmd_raw(key=self.cli.key,
ip=server,
cmd="ls /ferry/keys",
user=self.launcher.ssh_user)
if out and out.strip() == "":
return False
elif out:
logging.warning("found ssh key: " + out.strip())
return True
else:
return False
def _verify_ferry_server(self, server):
"""
Verify that the docker daemon is actually running on the server.
"""
# Try a couple times before giving up.
for i in range(0, 2):
out, err, success = self.cmd_raw(
key=self.cli.key,
ip=server,
cmd="if [ -f /var/run/ferry.pid ]; then echo \"launched\"; fi",
user=self.launcher.ssh_user)
if success and out and out.strip() != "":
logging.warning("docker daemon " + out.strip())
return True
elif not success:
return False
else:
time.sleep(6)
return False
def _execute_server_init(self, server):
"""
Restart the Ferry docker daemon.
"""
out, err, _ = self.cmd_raw(key=self.cli.key,
ip=server,
cmd="ferry server -n && sleep 3",
user=self.launcher.ssh_user)
logging.warning("restart ferry out: " + out)
logging.warning("restart ferry err: " + err)
def execute_docker_containers(self,
cinfo,
lxc_opts,
private_ip,
server_ip,
background=True,
simulate=False):
"""
Run the Docker container and use the cloud inspector to get information
about the container/VM.
"""
host_map = None
host_map_keys = []
mounts = {}
if not 'default_cmd' in cinfo:
cinfo['default_cmd'] = "/service/sbin/startnode init"
container = self.cli.run(service_type=cinfo['type'],
image=cinfo['image'],
volumes=cinfo['volumes'],
keydir={'/service/keys': '/ferry/keys'},
keyname=cinfo['keyname'],
privatekey=cinfo['privatekey'],
open_ports=host_map_keys,
host_map=host_map,
expose_group=cinfo['exposed'],
hostname=cinfo['hostname'],
default_cmd=cinfo['default_cmd'],
args=cinfo['args'],
lxc_opts=lxc_opts,
server=server_ip,
user=self.launcher.ssh_user,
inspector=self.inspector,
background=background,
simulate=simulate)
if container:
container.manage_ip = server_ip
container.internal_ip = private_ip
if self.proxy:
# Otherwise, the controller can only interact with the
# VMs via their public IP address.
container.external_ip = server_ip
else:
# When the fabric controller is acting in proxy mode,
# it can contact the VMs via their private addresses.
container.external_ip = private_ip
container.vm = self.launcher.default_personality
container.default_user = self.cli.docker_user
if 'name' in cinfo:
container.name = cinfo['name']
if 'volume_user' in cinfo:
mounts[container] = {
'user': cinfo['volume_user'],
'vols': cinfo['volumes'].items()
}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(3)
return container, mounts
else:
return None, None
def alloc(self, cluster_uuid, service_uuid, container_info, ctype):
"""
Allocate a new service cluster.
"""
containers = self.launcher.alloc(cluster_uuid, service_uuid,
container_info, ctype, self.proxy)
if not containers:
# The underlying cloud infrastructure could not allocate
# the service cluster. Sometimes it's just a temporary glitch, so
# get rid of the attempt and try some more.
logging.error("Failed to allocate service cluster. Trying again.")
self.launcher._delete_stack(cluster_uuid, service_uuid)
return self.launcher.alloc(cluster_uuid, service_uuid,
container_info, ctype, self.proxy)
else:
return containers
def stop(self, cluster_uuid, service_uuid, containers):
"""
Stop the running containers
"""
self.remove(cluster_uuid, service_uuid, containers)
def halt(self, cluster_uuid, service_uuid, containers):
"""
Safe stop the containers.
"""
# Stop the containers in the VMs. Stopping the container
# should jump us back out to the host. Afterwards, quit
# ferry so that we can restart later.
halt = '/service/sbin/startnode halt'
ferry = 'ferry quit'
for c in containers:
self.cmd_raw(c.privatekey, c.external_ip, halt, c.default_user)
self.cmd_raw(self.cli.key, c.manage_ip, ferry,
self.launcher.ssh_user)
# Now go ahead and stop the VMs.
self.launcher._stop_stack(cluster_uuid, service_uuid)
def remove(self, cluster_uuid, service_uuid, containers):
"""
Remove the running instances
"""
self.launcher._delete_stack(cluster_uuid, service_uuid)
def copy(self, containers, from_dir, to_dir):
"""
Copy over the contents to each container
"""
for c in containers:
self.copy_raw(c.privatekey, c.external_ip, from_dir, to_dir,
c.default_user)
def copy_raw(self, key, ip, from_dir, to_dir, user):
opts = '-o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
scp = 'scp ' + opts + ' -i ' + key + ' -r ' + from_dir + ' ' + user + '@' + ip + ':' + to_dir
logging.warning(scp)
robust_com(scp)
def cmd(self, containers, cmd):
"""
Run a command on all the containers and collect the output.
"""
all_output = {}
for c in containers:
output, _, _ = self.cmd_raw(c.privatekey, c.external_ip, cmd,
c.default_user)
if output.strip() != "":
all_output[c.host_name] = output.strip()
return all_output
def cmd_raw(self, key, ip, cmd, user):
ip = user + '@' + ip
ssh = 'LC_ALL=C && ssh -o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
return robust_com(ssh)
class CloudFabric(object):
def __init__(self, bootstrap=False):
self.name = "cloud"
self.repo = 'public'
self._init_cloudfabric()
self.bootstrap = bootstrap
self.cli = DockerCLI()
self.cli.key = self.launcher._get_host_key()
self.docker_user = self.cli.docker_user
self.inspector = CloudInspector(self)
# The system returns information regarding
# the instance types.
self.system = self.launcher.system
def _load_class(self, class_name):
"""
Dynamically load a class
"""
s = class_name.split("/")
module_path = s[0]
clazz_name = s[1]
module = importlib.import_module(module_path)
for n, o in inspect.getmembers(module):
if inspect.isclass(o):
if o.__module__ == module_path and o.__name__ == clazz_name:
return o(self)
return None
def _init_cloudfabric(self):
conf = ferry.install.read_ferry_config()
# The actual cloud launcher. This lets us customize
# launching into different cloud environments that each
# may be slightly different (HP Cloud, Rackspace, etc).
launcher = conf["system"]["mode"]
self.launcher = self._load_class(launcher)
# Determine if we are using this fabric in proxy
# mode. Proxy mode means that the client is external
# to the network, but controller has direct access.
self.proxy = bool(conf["system"]["proxy"])
# Check if the launcher supports proxy mode.
if self.proxy and not self.launcher.support_proxy():
logging.error("%s does not support proxy mode" % self.launcher.name)
def get_data_dir(self):
return "/ferry/data"
def installed_images(self):
"""
List all the installed Docker images. We should really
contact the index server responsible for serving out
images and ask it.
"""
images = []
image_string = self.cli.images()
for image in image_string.split():
image_name = image.strip()
if image_name != "REPOSITORY" and image_name != "<none>":
images.append(image_name)
return images
def version(self):
"""
Fetch the current docker version.
"""
return "0.1"
def get_fs_type(self):
"""
Get the filesystem type associated with docker.
"""
return "xfs"
def quit(self):
"""
Quit the cloud fabric.
"""
logging.info("quitting cloud fabric")
self.launcher.quit()
def restart(self, cluster_uuid, service_uuid, containers):
"""
Restart the stopped containers.
"""
# First need to restart all the virtual machines.
logging.warning("restarting virtual machines...")
addrs = self.launcher._restart_stack(cluster_uuid, service_uuid)
# Then need to restart Ferry on all the hosts.
logging.warning("restarting ferry...")
cmd = "source /etc/profile && ferry server -n"
for ip in addrs:
output, err, _ = self.cmd_raw(self.cli.key, ip, cmd, self.docker_user)
# Finally, restart the stopped containers.
logging.warning("restarting containers...")
cmd = "cat /ferry/containers/container.pid && rm /ferry/containers/container.pid"
for c in containers:
# Before restarting the containers, we need to learn their
# container IDs. It should be stored on a cidfile.
output, err, _ = self.cmd_raw(self.cli.key, c.external_ip, cmd, self.launcher.ssh_user)
c.container = output.strip()
self.cli.start(image = c.image,
container = c.container,
service_type = c.service_type,
keydir = c.keydir,
keyname = c.keyname,
privatekey = c.privatekey,
volumes = c.volumes,
args = c.args,
server = c.external_ip,
user = self.launcher.ssh_user,
inspector = self.inspector,
background = True)
return containers
def _copy_public_keys(self, container, server):
"""
Copy over the public ssh key to the server so that we can start the
container correctly.
"""
keydir = container['keydir'].values()[0]
self.copy_raw(key = self.cli.key,
ip = server,
from_dir = keydir + "/" + container["keyname"],
to_dir = "/ferry/keys/",
user = self.launcher.ssh_user)
def _verify_public_keys(self, server):
"""
Verify that the public key has been copied over correctly.
"""
out, _, _ = self.cmd_raw(key = self.cli.key,
ip = server,
cmd = "ls /ferry/keys",
user = self.launcher.ssh_user)
if out and out.strip() == "":
return False
elif out:
logging.warning("found ssh key: " + out.strip())
return True
else:
return False
def _verify_ferry_server(self, server):
"""
Verify that the docker daemon is actually running on the server.
"""
# Try a couple times before giving up.
for i in range(0, 2):
out, err, success = self.cmd_raw(key = self.cli.key,
ip = server,
cmd = "if [ -f /var/run/ferry.pid ]; then echo \"launched\"; fi",
user = self.launcher.ssh_user)
if success and out and out.strip() != "":
logging.warning("docker daemon " + out.strip())
return True
elif not success:
return False
else:
time.sleep(6)
return False
def _execute_server_init(self, server):
"""
Restart the Ferry docker daemon.
"""
out, err, _ = self.cmd_raw(key = self.cli.key,
ip = server,
cmd = "ferry server -n && sleep 3",
user = self.launcher.ssh_user)
logging.warning("restart ferry out: " + out)
logging.warning("restart ferry err: " + err)
def execute_docker_containers(self, cinfo, lxc_opts, private_ip, server_ip, background=True, simulate=False):
"""
Run the Docker container and use the cloud inspector to get information
about the container/VM.
"""
host_map = None
host_map_keys = []
mounts = {}
if not 'default_cmd' in cinfo:
cinfo['default_cmd'] = "/service/sbin/startnode init"
container = self.cli.run(service_type = cinfo['type'],
image = cinfo['image'],
volumes = cinfo['volumes'],
keydir = { '/service/keys' : '/ferry/keys' },
keyname = cinfo['keyname'],
privatekey = cinfo['privatekey'],
open_ports = host_map_keys,
host_map = host_map,
expose_group = cinfo['exposed'],
hostname = cinfo['hostname'],
default_cmd = cinfo['default_cmd'],
args= cinfo['args'],
lxc_opts = lxc_opts,
server = server_ip,
user = self.launcher.ssh_user,
inspector = self.inspector,
background = background,
simulate= simulate)
if container:
container.manage_ip = server_ip
container.internal_ip = private_ip
if self.proxy:
# Otherwise, the controller can only interact with the
# VMs via their public IP address.
container.external_ip = server_ip
else:
# When the fabric controller is acting in proxy mode,
# it can contact the VMs via their private addresses.
container.external_ip = private_ip
container.vm = self.launcher.default_personality
container.default_user = self.cli.docker_user
if 'name' in cinfo:
container.name = cinfo['name']
if 'volume_user' in cinfo:
mounts[container] = {'user':cinfo['volume_user'],
'vols':cinfo['volumes'].items()}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(3)
return container, mounts
else:
return None, None
def alloc(self, cluster_uuid, service_uuid, container_info, ctype):
"""
Allocate a new service cluster.
"""
containers = self.launcher.alloc(cluster_uuid, service_uuid, container_info, ctype, self.proxy)
if not containers:
# The underlying cloud infrastructure could not allocate
# the service cluster. Sometimes it's just a temporary glitch, so
# get rid of the attempt and try some more.
logging.error("Failed to allocate service cluster. Trying again.")
self.launcher._delete_stack(cluster_uuid, service_uuid)
return self.launcher.alloc(cluster_uuid, service_uuid, container_info, ctype, self.proxy)
else:
return containers
def stop(self, cluster_uuid, service_uuid, containers):
"""
Stop the running containers
"""
self.remove(cluster_uuid, service_uuid, containers)
def halt(self, cluster_uuid, service_uuid, containers):
"""
Safe stop the containers.
"""
# Stop the containers in the VMs. Stopping the container
# should jump us back out to the host. Afterwards, quit
# ferry so that we can restart later.
halt = '/service/sbin/startnode halt'
ferry = 'ferry quit'
for c in containers:
self.cmd_raw(c.privatekey, c.external_ip, halt, c.default_user)
self.cmd_raw(self.cli.key, c.manage_ip, ferry, self.launcher.ssh_user)
# Now go ahead and stop the VMs.
self.launcher._stop_stack(cluster_uuid, service_uuid)
def remove(self, cluster_uuid, service_uuid, containers):
"""
Remove the running instances
"""
self.launcher._delete_stack(cluster_uuid, service_uuid)
def copy(self, containers, from_dir, to_dir):
"""
Copy over the contents to each container
"""
for c in containers:
self.copy_raw(c.privatekey, c.external_ip, from_dir, to_dir, c.default_user)
def copy_raw(self, key, ip, from_dir, to_dir, user):
opts = '-o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
scp = 'scp ' + opts + ' -i ' + key + ' -r ' + from_dir + ' ' + user + '@' + ip + ':' + to_dir
logging.warning(scp)
robust_com(scp)
def cmd(self, containers, cmd):
"""
Run a command on all the containers and collect the output.
"""
all_output = {}
for c in containers:
output, _, _ = self.cmd_raw(c.privatekey, c.external_ip, cmd, c.default_user)
if output.strip() != "":
all_output[c.host_name] = output.strip()
return all_output
def cmd_raw(self, key, ip, cmd, user):
ip = user + '@' + ip
ssh = 'LC_ALL=C && ssh -o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
return robust_com(ssh)
class LocalFabric(object):
def __init__(self, bootstrap=False):
self.name = "local"
self.repo = 'public'
self.cli = DockerCLI(ferry.install.DOCKER_REGISTRY)
self.docker_user = self.cli.docker_user
self.inspector = DockerInspector(self.cli)
self.bootstrap = bootstrap
# The system returns information regarding
# the instance types.
self.system = System()
# Bootstrap mode means that the DHCP network
# isn't available yet, so we can't use the network.
if not bootstrap:
self.network = DHCPClient(ferry.install._get_gateway())
def _get_host(self):
cmd = "ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'"
return Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
def get_data_dir(self):
if 'FERRY_SCRATCH' in os.environ:
scratch_dir = os.environ['FERRY_SCRATCH']
else:
scratch_dir = os.path.join(ferry.install._get_ferry_dir(server=True), 'scratch')
if not os.path.isdir(scratch_dir):
os.makedirs(scratch_dir)
return scratch_dir
def installed_images(self):
"""
List all the installed Docker images.
"""
images = []
image_string = self.cli.images()
for image in image_string.split():
image_name = image.strip()
if image_name != "REPOSITORY" and image_name != "<none>":
images.append(image_name)
return images
def version(self):
"""
Fetch the current docker version.
"""
return self.cli.version()
def get_fs_type(self):
"""
Get the filesystem type associated with docker.
"""
return self.cli.get_fs_type()
def quit(self):
"""
Quit the local fabric.
"""
logging.info("quitting local fabric")
def restart(self, cluster_uuid, service_uuid, containers):
"""
Restart the stopped containers.
"""
new_containers = []
for c in containers:
container = self.cli.start(image = c.image,
container = c.container,
service_type = c.service_type,
keydir = c.keydir,
keyname = c.keyname,
privatekey = c.privatekey,
volumes = c.volumes,
args = c.args,
inspector = self.inspector)
container.default_user = self.docker_user
new_containers.append(container)
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
return new_containers
def alloc(self, cluster_uuid, service_uuid, container_info, ctype):
"""
Allocate several instances.
"""
containers = []
mounts = {}
for c in container_info:
# Get a new IP address for this container and construct
# a default command.
gw = ferry.install._get_gateway().split("/")[0]
# Check if we should use the manual LXC option.
if not 'netenable' in c:
ip = self.network.assign_ip(c)
lxc_opts = ["lxc.network.type = veth",
"lxc.network.ipv4 = %s/24" % ip,
"lxc.network.ipv4.gateway = %s" % gw,
"lxc.network.link = ferry0",
"lxc.network.name = eth0",
"lxc.network.flags = up"]
# Check if we need to forward any ports.
host_map = {}
for p in c['ports']:
p = str(p)
s = p.split(":")
if len(s) > 1:
host = s[0]
dest = s[1]
else:
host = self.network.random_port()
dest = s[0]
host_map[dest] = [{'HostIp' : '0.0.0.0',
'HostPort' : host}]
self.network.forward_rule('0.0.0.0/0', host, ip, dest)
host_map_keys = host_map.keys()
else:
lxc_opts = None
host_map = None
host_map_keys = []
# Start a container with a specific image, in daemon mode,
# without TTY, and on a specific port
if not 'default_cmd' in c:
c['default_cmd'] = "/service/sbin/startnode init"
container = self.cli.run(service_type = c['type'],
image = c['image'],
volumes = c['volumes'],
keydir = c['keydir'],
keyname = c['keyname'],
privatekey = c['privatekey'],
open_ports = host_map_keys,
host_map = host_map,
expose_group = c['exposed'],
hostname = c['hostname'],
default_cmd = c['default_cmd'],
args= c['args'],
lxc_opts = lxc_opts,
inspector = self.inspector,
background = False)
if container:
container.default_user = self.docker_user
containers.append(container)
if not 'netenable' in c:
container.internal_ip = ip
container.external_ip = ip
self.network.set_owner(ip, container.container)
if 'name' in c:
container.name = c['name']
if 'volume_user' in c:
mounts[container] = {'user':c['volume_user'],
'vols':c['volumes'].items()}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(3)
# Check if we need to set the file permissions
# for the mounted volumes.
for c, i in mounts.items():
for _, v in i['vols']:
self.cmd([c], 'chown -R %s %s' % (i['user'], v))
return containers
def stop(self, cluster_uuid, service_uuid, containers):
"""
Forceably stop the running containers
"""
for c in containers:
if type(c) is dict:
self.cli.stop(c['container'])
else:
self.cli.stop(c.container)
def remove(self, cluster_uuid, service_uuid, containers):
"""
Remove the running instances
"""
for c in containers:
for p in c.ports.keys():
self.network.delete_rule(c.internal_ip, p)
self.network.free_ip(c.internal_ip)
self.cli.remove(c.container)
def snapshot(self, containers, cluster_uuid, num_snapshots):
"""
Save/commit the running instances
"""
snapshots = []
for c in containers:
snapshot_name = '%s-%s-%s:SNAPSHOT-%s' % (c.image,
cluster_uuid,
c.host_name,
num_snapshots)
snapshots.append( {'image' : snapshot_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args,
'ports': c.ports} )
self.cli.commit(c, snapshot_name)
return snapshots
def push(self, image, registry=None):
"""
Push an image to a remote registry.
"""
return self.cli.push(image, registry)
def pull(self, image):
"""
Pull a remote image to the local registry.
"""
return self.cli.pull(image)
def halt(self, cluster_uuid, service_uuid, containers):
"""
Safe stop the containers.
"""
cmd = '/service/sbin/startnode halt'
for c in containers:
self.cmd_raw(c.privatekey, c.internal_ip, cmd, c.default_user)
def copy(self, containers, from_dir, to_dir):
"""
Copy over the contents to each container
"""
for c in containers:
self.copy_raw(c.privatekey, c.internal_ip, from_dir, to_dir, c.default_user)
def copy_raw(self, key, ip, from_dir, to_dir, user):
if key:
opts = '-o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
scp = 'scp ' + opts + ' -i ' + key + ' -r ' + from_dir + ' ' + user + '@' + ip + ':' + to_dir
logging.warning(scp)
robust_com(scp)
def cmd(self, containers, cmd):
"""
Run a command on all the containers and collect the output.
"""
all_output = {}
for c in containers:
output = self.cmd_raw(c.privatekey, c.internal_ip, cmd, c.default_user)
if output.strip() != "":
all_output[c.host_name] = output.strip()
return all_output
def cmd_raw(self, key, ip, cmd, user):
if key:
ip = user + '@' + ip
ssh = 'LC_ALL=C && ssh -o ConnectTimeout=20 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
out, _, _ = robust_com(ssh)
return out
else:
return ''
def login(self):
"""
Login to a remote registry. Use the login credentials
found in the user's home directory.
"""
config = ferry.install.read_ferry_config()
args = config['docker']
if all(k in args for k in ("user","password","email")):
if 'server' in args:
server = args['server']
else:
server = ''
return self.cli.login(user = args['user'],
password = args['password'],
email = args['email'],
registry = server)
logging.error("Could not open login credentials " + ferry.install.DEFAULT_LOGIN_KEY)
return False
class DockerFabric(object):
def __init__(self):
self.repo = 'public'
self.docker_user = '******'
self.cli = DockerCLI()
self.network = DHCPClient(self._get_gateway())
def _get_gateway(self):
cmd = "ifconfig drydock0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'"
gw = Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
cmd = "ifconfig drydock0 | grep 'inet addr:' | cut -d: -f4 | awk '{ print $1}'"
netmask = Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
mask = map(int, netmask.split("."))
cidr = 1
if mask[3] == 0:
cidr = 8
if mask[2] == 0:
cidr *= 2
return "%s/%d" % (gw, 32 - cidr)
def _get_host(self):
cmd = "ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'"
return Popen(cmd, stdout=PIPE, shell=True).stdout.read().strip()
"""
Read the location of the directory containing the keys
used to communicate with the containers.
"""
def _read_key_dir(self):
f = open(ferry.install.DEFAULT_DOCKER_KEY, 'r')
k = f.read().strip().split("://")
return k[1], k[0]
"""
Fetch the current docker version.
"""
def version(self):
return self.cli.version()
"""
Get the filesystem type associated with docker.
"""
def get_fs_type(self):
return self.cli.get_fs_type()
"""
Restart the stopped containers.
"""
def restart(self, container_info):
containers = []
for c in container_info:
container = self.cli.start(c['container'],
c['type'],
c['keys'],
c['volumes'],
c['args'])
container.default_user = self.docker_user
containers.append(container)
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
return containers
"""
Allocate several instances.
"""
def alloc(self, container_info):
containers = []
mounts = {}
for c in container_info:
# Get a new IP address for this container and construct
# a default command.
ip = self.network.assign_ip(c)
gw = self._get_gateway().split("/")[0]
lxc_opts = ["lxc.network.type = veth",
"lxc.network.ipv4 = %s" % ip,
"lxc.network.ipv4.gateway = %s" % gw,
"lxc.network.link = drydock0",
"lxc.network.name = eth0",
"lxc.network.flags = up"]
c['default_cmd'] = "/service/sbin/startnode init"
# Check if we need to forward any ports.
host_map = {}
for p in c['ports']:
p = str(p)
s = p.split(":")
if len(s) > 1:
host = s[0]
dest = s[1]
else:
host = self.network.random_port()
dest = s[0]
host_map[dest] = [{'HostIp' : '0.0.0.0',
'HostPort' : host}]
self.network.forward_rule('0.0.0.0/0', host, ip, dest)
# Start a container with a specific image, in daemon mode,
# without TTY, and on a specific port
container = self.cli.run(service_type = c['type'],
image = c['image'],
volumes = c['volumes'],
keys = c['keys'],
open_ports = host_map.keys(),
host_map = host_map,
expose_group = c['exposed'],
hostname = c['hostname'],
default_cmd = c['default_cmd'],
args= c['args'],
lxc_opts = lxc_opts)
if container:
container.default_user = self.docker_user
container.internal_ip = ip
containers.append(container)
self.network.set_owner(ip, container.container)
if 'name' in c:
container.name = c['name']
if 'volume_user' in c:
mounts[container] = {'user':c['volume_user'],
'vols':c['volumes'].items()}
# We should wait for a second to let the ssh server start
# on the containers (otherwise sometimes we get a connection refused)
time.sleep(2)
# Check if we need to set the file permissions
# for the mounted volumes.
for c, i in mounts.items():
for _, v in i['vols']:
self.cmd([c], 'chown -R %s %s' % (i['user'], v))
return containers
"""
Stop the running instances
"""
def stop(self, containers):
for c in containers:
self.cli.stop(c.container)
"""
Remove the running instances
"""
def remove(self, containers):
for c in containers:
for p in c.ports.keys():
self.network.delete_rule(c.internal_ip, p)
self.network.free_ip(c.internal_ip)
self.cli.remove(c.container)
"""
Save/commit the running instances
"""
def snapshot(self, containers, cluster_uuid, num_snapshots):
snapshots = []
for c in containers:
snapshot_name = '%s-%s-%s:SNAPSHOT-%s' % (c.image,
cluster_uuid,
c.host_name,
num_snapshots)
snapshots.append( {'image' : snapshot_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args,
'ports': c.ports} )
self.cli.commit(c, snapshot_name)
return snapshots
"""
Upload these containers to the specified registry.
"""
def deploy(self, containers, registry=None):
deployed = []
for c in containers:
image_name = '%s-%s:DEPLOYED' % (c.image,
c.host_name)
deployed.append( {'image' : image_name,
'base' : c.image,
'type' : c.service_type,
'name' : c.name,
'args' : c.args,
'ports': c.ports} )
if not registry:
self.cli.commit(c, image_name)
else:
self.cli.push(c, registry)
return deployed
"""
Copy over the contents to each container
"""
def copy(self, containers, from_dir, to_dir):
for c in containers:
keydir, _ = self._read_key_dir()
opts = '-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
key = '-i ' + keydir + '/id_rsa'
scp_cmd = 'scp ' + opts + ' ' + key + ' -r ' + from_dir + ' ' + self.docker_user + '@' + c.internal_ip + ':' + to_dir
output = Popen(scp_cmd, stdout=PIPE, shell=True).stdout.read()
"""
Run a command on all the containers and collect the output.
"""
def cmd(self, containers, cmd):
all_output = {}
keydir, _ = self._read_key_dir()
key = keydir + '/id_rsa'
for c in containers:
ip = self.docker_user + '@' + c.internal_ip
ssh = 'ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ' + key + ' -t -t ' + ip + ' \'%s\'' % cmd
logging.warning(ssh)
output = Popen(ssh, stdout=PIPE, shell=True).stdout.read()
all_output[c] = output.strip()
return all_output