Synnefo

import time

import os

import argparse

import sys

import re

import random

import ast

from snfdeploy.lib import check_pidfile, create_dir, get_default_route, \

    random_mac, Conf, Env

from snfdeploy import fabfile

from fabric.api import hide, settings, execute, show

def print_available_actions(command):

    if command == "keygen":

        print """

Usage: snf-deploy keygen [--force]

  Generate new ssh keys (both rsa and dsa keypairs)

  """

    if command == "vcluster":

        print """

Usage: snf-deploy vcluster

  Run the following actions concerning the local virtual cluster:

    - Download base image and create additional disk \

(if --create-extra-disk is passed)

    - Does all the network related actions (bridge, iptables, NAT)

    - Launches dnsmasq for dhcp server on bridge

    - Creates the virtual cluster (with kvm)

  """

    if command == "prepare":

        print """

Usage: snf-deploy prepare

  Run the following actions concerning deployment preparation:

    - Setup an internal Domain Name Server

    - Tweak hosts and add ssh keys

    - Check network setup

    - Setup apt repository and apt-get update

    - Setup the nfs server and clients among all nodes

  """

    if command == "backend":

        print """

Usage: snf-deploy backend [update]

  Run the following actions concerning a ganeti backend:

    - Create and add a backend to cyclades

    - Does all the net-infra specific actions in backend nodes

      (create/connect bridges, iptables..)

    - Does all the storage-infra specific actions in backend nodes

      depending on the --extra-disk option \

(create VG, enable lvm/drbd storage..)

    or

    - Update packages in an already registered backend in cyclades.

  """

    if command == "run":

        print """

Usage: snf-deploy run <action> [<action>...]

  Run any of the following fabric commands:

    Setup commands:        Init commands:                Admin commands:

      setup_apache           add_pools                     activate_user

      setup_apt              add_rapi_user                 add_backend

      setup_astakos          add_nodes                     add_image_locally

      setup_cms              astakos_loaddata              add_network

      setup_common           astakos_register_components   add_ns

      setup_cyclades         cms_loaddata                  add_user

      setup_db               cyclades_loaddata             connect_bridges

      setup_ganeti           enable_drbd                   create_bridges

      setup_gtools           init_cluster                  create_vlans

      setup_gunicorn         setup_nfs_clients             destroy_db

      setup_hosts            setup_nfs_server              \

get_auth_token_from_db

      setup_image_helper     update_ns_for_ganeti          get_service_details

      setup_image_host                                     gnt_instance_add

      setup_iptables                                       gnt_network_add

      setup_kamaki         Test commands:                  register_image

      setup_lvm              test                          restart_services

      setup_mq                                             setup_drbd_dparams

      setup_net_infra

      setup_network

      setup_ns

      setup_pithos

      setup_pithos_dir

      setup_router

      setup_vncauthproxy

      setup_webproject

  """

    sys.exit(1)

def create_dnsmasq_files(args, env):

    print("Customize dnsmasq..")

    out = env.dns

    hostsfile = open(out + "/dhcp-hostsfile", "w")

    optsfile = open(out + "/dhcp-optsfile", "w")

    conffile = open(out + "/conf-file", "w")

    for node, info in env.nodes_info.iteritems():

        # serve ip and hostname to nodes

        hostsfile.write("%s,%s,%s,2m\n" % (info.mac, info.ip, info.hostname))

    hostsfile.write("52:54:56:*:*:*,ignore\n")

    # Netmask

    optsfile.write("1,%s\n" % env.net.netmask)

    # Gateway

    optsfile.write("3,%s\n" % env.gateway)

    # Namesevers

    optsfile.write("6,%s\n" % "8.8.8.8")

    dnsconf = """

user=dnsmasq

bogus-priv

no-poll

no-negcache

leasefile-ro

bind-interfaces

except-interface=lo

dhcp-fqdn

no-resolv

# disable DNS

port=0

""".format(env.ns.ip)

    dnsconf += """

# serve domain and search domain for resolv.conf

domain={5}

interface={0}

dhcp-hostsfile={1}

dhcp-optsfile={2}

dhcp-range={0},{4},static,2m

""".format(env.bridge, hostsfile.name, optsfile.name,

           env.domain, env.net.network, env.domain)

    conffile.write(dnsconf)

    hostsfile.close()

    optsfile.close()

    conffile.close()

def cleanup(args, env):

    print("Cleaning up bridge, NAT, resolv.conf...")

    for f in os.listdir(env.run):

        if re.search(".pid$", f):

            check_pidfile(os.path.join(env.run, f))

    create_dir(env.run, True)

    # create_dir(env.cmd, True)

    cmd = """

    iptables -t nat -D POSTROUTING -s {0} -o {1} -j MASQUERADE

    echo 0 > /proc/sys/net/ipv4/ip_forward

    iptables -D INPUT -i {2} -j ACCEPT

    iptables -D FORWARD -i {2} -j ACCEPT

    iptables -D OUTPUT -o {2} -j ACCEPT

    """.format(env.subnet, get_default_route()[1], env.bridge)

    os.system(cmd)

    cmd = """

    ip link show {0} && ip addr del {1}/{2} dev {0}

    sleep 1

    ip link set {0} down

    sleep 1

    brctl delbr {0}

    """.format(env.bridge, env.gateway, env.net.prefixlen)

    os.system(cmd)

def network(args, env):

    print("Create bridge..Add gateway IP..Activate NAT.."

          "Append NS options to resolv.conf")

    cmd = """

    ! ip link show {0} && brctl addbr {0} && ip link set {0} up

    sleep 1

    ip link set promisc on dev {0}

    ip addr add {1}/{2} dev {0}

    """.format(env.bridge, env.gateway, env.net.prefixlen)

    os.system(cmd)

    cmd = """

    iptables -t nat -A POSTROUTING -s {0} -o {1} -j MASQUERADE

    echo 1 > /proc/sys/net/ipv4/ip_forward

    iptables -I INPUT 1 -i {2} -j ACCEPT

    iptables -I FORWARD 1 -i {2} -j ACCEPT

    iptables -I OUTPUT 1 -o {2} -j ACCEPT

    """.format(env.subnet, get_default_route()[1], env.bridge)

    os.system(cmd)

def image(args, env):

    if env.os == "ubuntu":

        url = env.ubuntu_image_url

    else:

        url = env.squeeze_image_url

    disk0 = "{0}/{1}.disk0".format(env.images, env.os)

    disk1 = "{0}/{1}.disk1".format(env.images, env.os)

    if url and not os.path.exists(disk0):

        cmd = "wget {0} -O {1}".format(url, disk0)

        os.system(cmd)

    if ast.literal_eval(env.create_extra_disk) and not os.path.exists(disk1):

        if env.lvg:

            cmd = "lvcreate -L30G -n{0}.disk1 {1}".format(env.os, env.lvg)

            os.system(cmd)

            cmd = "ln -s /dev/{0}/{1}.disk1 {2}".format(env.lvg, env.os, disk1)

            os.system(cmd)

        else:

            cmd = "dd if=/dev/zero of={0} bs=10M count=3000".format(disk1)

            os.system(cmd)

def fabcommand(args, env, actions, nodes=[]):

    levels = ["status", "aborts", "warnings", "running",

              "stdout", "stderr", "user", "debug"]

    level_aliases = {

        "output": ["stdout", "stderr"],

        "everything": ["warnings", "running", "user", "output"]

    }

    lhide = level_aliases["everything"]

    lshow = []

    if args.verbose == 1:

        lshow = levels[:3]

        lhide = levels[3:]

    elif args.verbose == 2:

        lshow = levels[:4]

        lhide = levels[4:]

    elif args.verbose >= 3 or args.debug:

        lshow = levels

        lhide = []

#   fabcmd += " --fabfile {4}/fabfile.py \

# setup_env:confdir={0},packages={1},templates={2},cluster_name={3},\

# autoconf={5},disable_colors={6},key_inject={7} \

# ".format(args.confdir, env.packages, env.templates, args.cluster_name,

#          env.lib, args.autoconf, args.disable_colors, args.key_inject)

    if nodes:

        ips = [env.nodes_info[n].ip for n in nodes]

    fabfile.setup_env(args)

    with settings(hide(*lhide), show(*lshow)):

        print " ".join(actions)

        for a in actions:

            fn = getattr(fabfile, a)

            if not args.dry_run:

                if nodes:

                    execute(fn, hosts=ips)

                else:

                    execute(fn)

def cluster(args, env):

    for hostname, mac in env.node2mac.iteritems():

        launch_vm(args, env, hostname, mac)

    time.sleep(30)

    os.system("reset")

def launch_vm(args, env, hostname, mac):

    check_pidfile("%s/%s.pid" % (env.run, hostname))

    print("Launching cluster node {0}..".format(hostname))

    os.environ["BRIDGE"] = env.bridge

    if args.vnc:

        graphics = "-vnc :{0}".format(random.randint(1, 1000))

    else:

        graphics = "-nographic"

    disks = """ \

-drive file={0}/{1}.disk0,format=raw,if=none,id=drive0,snapshot=on \

-device virtio-blk-pci,drive=drive0,id=virtio-blk-pci.0 \

""".format(env.images, env.os)

    if ast.literal_eval(env.create_extra_disk):

        disks += """ \

-drive file={0}/{1}.disk1,format=raw,if=none,id=drive1,snapshot=on \

-device virtio-blk-pci,drive=drive1,id=virtio-blk-pci.1 \

""".format(env.images, env.os)

    ifup = env.lib + "/ifup"

    nics = """ \

-netdev tap,id=netdev0,script={0},downscript=no \

-device virtio-net-pci,mac={1},netdev=netdev0,id=virtio-net-pci.0 \

-netdev tap,id=netdev1,script={0},downscript=no \

-device virtio-net-pci,mac={2},netdev=netdev1,id=virtio-net-pci.1 \

-netdev tap,id=netdev2,script={0},downscript=no \

-device virtio-net-pci,mac={3},netdev=netdev2,id=virtio-net-pci.2 \

""".format(ifup, mac, random_mac(), random_mac())

    cmd = """

/usr/bin/kvm -name {0} -pidfile {1}/{0}.pid -balloon virtio -daemonize \

-monitor unix:{1}/{0}.monitor,server,nowait -usbdevice tablet -boot c \

{2} \

{3} \

-m {4} -smp {5} {6} \

""".format(hostname, env.run, disks, nics, args.mem, args.smp, graphics)

    print cmd

    os.system(cmd)

def dnsmasq(args, env):

    check_pidfile(env.run + "/dnsmasq.pid")

    cmd = "dnsmasq --pid-file={0}/dnsmasq.pid --conf-file={1}/conf-file"\

        .format(env.run, env.dns)

    os.system(cmd)

def get_packages(args, env):

    if env.package_url:

        os.system("rm {0}/*.deb".format(env.packages))

        os.system("wget -r --level=1 -nH --no-parent --cut-dirs=4 {0} -P {1}"

                  .format(env.package_url, env.packages))

def parse_options():

    parser = argparse.ArgumentParser()

    # Directories to load/store config

    parser.add_argument("-c", dest="confdir",

                        default="/etc/snf-deploy",

                        help="Directory to find default configuration")

    parser.add_argument("--dry-run", dest="dry_run",

                        default=False, action="store_true",

                        help="Do not execute or write anything.")

    parser.add_argument("-v", dest="verbose",

                        default=0, action="count",

                        help="Increase verbosity.")

    parser.add_argument("-d", dest="debug",

                        default=False, action="store_true",

                        help="Debug mode")

    parser.add_argument("--autoconf", dest="autoconf",

                        default=False, action="store_true",

                        help="In case of all in one auto conf setup")

    # virtual cluster related options

    parser.add_argument("--mem", dest="mem",

                        default=2024,

                        help="Memory for every virutal node")

    parser.add_argument("--smp", dest="smp",

                        default=1,

                        help="Virtual CPUs for every virtual node")

    parser.add_argument("--vnc", dest="vnc",

                        default=False, action="store_true",

                        help="Wheter virtual nodes will have a vnc "

                             "console or not")

    parser.add_argument("--force", dest="force",

                        default=False, action="store_true",

                        help="Force the creation of new ssh key pairs")

    parser.add_argument("-i", "--ssh-key", dest="ssh_key",

                        default=None,

                        help="Path of an existing ssh key to use")

    parser.add_argument("--no-key-inject", dest="key_inject",

                        default=True, action="store_false",

                        help="Whether to inject ssh key pairs to hosts")

    # backend related options

    parser.add_argument("--cluster-name", dest="cluster_name",

                        default="ganeti1",

                        help="The cluster name in ganeti.conf")

    # backend related options

    parser.add_argument("--cluster-node", dest="cluster_node",

                        default=None,

                        help="The node to add to the existing cluster")

    # available commands

    parser.add_argument("command", type=str,

                        choices=["packages", "vcluster", "prepare",

                                 "synnefo", "backend", "ganeti",

                                 "run", "cleanup", "test",

                                 "all", "add", "keygen"],

                        help="Run on of the supported deployment commands")

    # available actions for the run command

    parser.add_argument("actions", type=str, nargs="*",

                        help="Run one or more of the supported subcommands")

    # disable colors in terminal

    parser.add_argument("--disable-colors", dest="disable_colors",

                        default=False, action="store_true",

                        help="Disable colors in terminal")

    return parser.parse_args()

def get_actions(*args):

    actions = {

        # prepare actions

        "ns":  ["setup_ns", "setup_resolv_conf"],

        "hosts": ["setup_hosts", "add_keys"],

        "check": ["check_dhcp", "check_dns",

                  "check_connectivity", "check_ssh"],

        "apt": ["apt_get_update", "setup_apt"],

        "nfs": ["setup_nfs_server", "setup_nfs_clients"],

        "prepare":  [

            "setup_hosts", "add_keys",

            "setup_ns", "setup_resolv_conf",

            "check_dhcp", "check_dns", "check_connectivity", "check_ssh",

            "apt_get_update", "setup_apt",

            "setup_nfs_server", "setup_nfs_clients"

        ],

        # synnefo actions

        "synnefo": [

            "setup_mq", "setup_db",

            "setup_astakos",

            #TODO: astakos-quota fails if no user is added.

            #      add_user fails if no groups found

            "astakos_loaddata", "add_user", "activate_user",

            "astakos_register_components",

            "setup_cms", "cms_loaddata",

            "setup_pithos",

            "setup_cyclades", "cyclades_loaddata", "add_pools",

            "export_services", "import_services", "setup_vncauthproxy",

            "setup_kamaki", "upload_image", "register_image",

            "setup_burnin"

        ],

        "supdate": [

            "apt_get_update", "setup_astakos",

            "setup_cms", "setup_pithos", "setup_cyclades"

        ],

        # backend actions

        "backend": [

            "setup_hosts",

            "update_ns_for_ganeti",

            "setup_ganeti", "init_cluster",

            "add_rapi_user", "add_nodes",

            "setup_image_host", "setup_image_helper",

            "setup_network",

            "setup_gtools", "add_backend", "add_network",

            "setup_lvm", "enable_lvm",

            "enable_drbd", "setup_drbd_dparams",

            "setup_net_infra", "setup_iptables", "setup_router",

        ],

        "bstorage": [

            "setup_lvm", "enable_lvm",

            "enable_drbd", "setup_drbd_dparams"

        ],

        "bnetwork": ["setup_net_infra", "setup_iptables", "setup_router"],

        "bupdate": [

            "apt_get_update", "setup_ganeti", "setup_image_host",

            "setup_image_helper", "setup_network", "setup_gtools"

        ],

        # ganeti actions

        "ganeti": [

            "update_ns_for_ganeti",

            "setup_ganeti", "init_cluster", "add_nodes",

            "setup_image_host", "setup_image_helper", "add_image_locally",

            "debootstrap", "setup_net_infra",

            "setup_lvm", "enable_lvm", "enable_drbd", "setup_drbd_dparams",

        ],

        "gupdate": ["setup_apt", "setup_ganeti"],

        "gdestroy": ["destroy_cluster"],

    }

    ret = []

    for x in args:

        ret += actions[x]

    return ret

def must_create_keys(force, env):

    """Check if we need to create ssh keys

    If force is true we are going to overide the old keys.

    Else if there are already generated keys to use, don't create new ones.

    """

    if force:

        return True

    d = os.path.join(env.templates, "root/.ssh")

    auth_keys_exists = os.path.exists(os.path.join(d, "authorized_keys"))

    dsa_exists = os.path.exists(os.path.join(d, "id_dsa"))

    dsa_pub_exists = os.path.exists(os.path.join(d, "id_dsa.pub"))

    rsa_exists = os.path.exists(os.path.join(d, "id_rsa"))

    rsa_pub_exists = os.path.exists(os.path.join(d, "id_rsa.pub"))

    # If any of the above doesn't exist return True

    return not (dsa_exists and dsa_pub_exists

                and rsa_exists and rsa_pub_exists

                and auth_keys_exists)

def do_create_keys(args, env):

    d = os.path.join(env.templates, "root/.ssh")

    a = os.path.join(d, "authorized_keys")

    # Delete old keys

    for filename in os.listdir(d):

        os.remove(os.path.join(d, filename))

    # Generate new keys

    for t in ("dsa", "rsa"):

        f = os.path.join(d, "id_" + t)

        cmd = 'ssh-keygen -q -t {0} -f {1} -N ""'.format(t, f)

        os.system(cmd)

        cmd = 'cat {0}.pub >> {1}'.format(f, a)

        os.system(cmd)

def add_node(args, env):

    actions = [

        "update_ns_for_node:" + args.cluster_node,

    ]

    fabcommand(args, env, actions)

    actions = [

        "setup_resolv_conf",

        "apt_get_update",

        "setup_apt",

        "setup_hosts",

        "add_keys",

    ]

    fabcommand(args, env, actions, [args.cluster_node])

    actions = get_actions("check")

    fabcommand(args, env, actions)

    actions = [

        "setup_nfs_clients",

        "setup_ganeti",

        "setup_image_host", "setup_image_helper",

        "setup_network", "setup_gtools",

    ]

    fabcommand(args, env, actions, [args.cluster_node])

    actions = [

        "add_node:" + args.cluster_node,

    ]

    fabcommand(args, env, actions)

    actions = [

        "setup_lvm", "enable_drbd",

        "setup_net_infra", "setup_iptables",

    ]

    fabcommand(args, env, actions, [args.cluster_node])

def main():

    args = parse_options()

    conf = Conf(args)

    env = Env(conf)

    create_dir(env.run, False)

    create_dir(env.dns, False)

    # Check if there are keys to use

    if args.command == "keygen":

        if must_create_keys(args.force, env):

            do_create_keys(args, env)

            return 0

        else:

            print "Keys already existed.. aborting"

            return 1

    else:

        if (args.key_inject and (args.ssh_key is None)

                and must_create_keys(False, env)):

            print "No ssh keys to use. Run `snf-deploy keygen' first."

            return 1

    if args.command == "test":

        conf.print_config()

    if args.command == "cleanup":

        cleanup(args, env)

    if args.command == "packages":

        create_dir(env.packages, True)

        get_packages(args, env)

    if args.command == "vcluster":

        image(args, env)

        network(args, env)

        create_dnsmasq_files(args, env)

        dnsmasq(args, env)

        cluster(args, env)

    if args.command == "prepare":

        actions = get_actions("prepare")

        fabcommand(args, env, actions)

    if args.command == "synnefo":

        actions = get_actions("synnefo")

        fabcommand(args, env, actions)

    if args.command == "backend":

        actions = get_actions("backend")

        fabcommand(args, env, actions)

    if args.command == "ganeti":

        actions = get_actions("ganeti")

        fabcommand(args, env, actions)

    if args.command == "all":

        actions = get_actions("prepare", "synnefo", "backend")

        fabcommand(args, env, actions)

    if args.command == "add":

        if args.cluster_node:

            add_node(args, env)

        else:

            actions = get_actions("backend")

            fabcommand(args, env, actions)

    if args.command == "run":

        if not args.actions:

            print_available_actions(args.command)

        else:

            fabcommand(args, env, args.actions)

if __name__ == "__main__":

    sys.exit(main())