/
cluster_run
executable file
·307 lines (253 loc) · 9.76 KB
/
cluster_run
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#!/usr/bin/env python
import os, subprocess, sys, signal, atexit, socket, getopt, select
PREFIX = subprocess.Popen(". $(pwd)/.configuration && echo $prefix", shell = True, stdout=subprocess.PIPE).communicate()[0].rstrip()
base_direct_port = 12000
base_api_port = 9000
base_couch_port = 9500
base_mccouch_port = 13000
LOGLEVELS = ["debug", "info", "warn", "error", "critical"]
def setup_path():
def ebin_search(path):
return subprocess.Popen(["find", path, "-name", "ebin", "-type", "d"],
stdout=subprocess.PIPE).communicate()[0].split()
path = ebin_search(".")
couchpath = ebin_search("{0}/lib/couchdb/erlang/lib".format(PREFIX))
couch_plugins = ebin_search("{0}/lib/couchdb/plugins".format(PREFIX))
if len(couchpath) == 0:
sys.exit("Couch libs wasn't found.\nCan't handle it")
return couchpath + path + couch_plugins
def mk_node_couch_config(i):
try:
os.mkdir("couch")
except os.error:
pass
with open("couch/n_{0}_conf.ini".format(i), "w") as f:
f.write("[httpd]\n")
f.write("port={0}\n".format(base_couch_port + i))
f.write("[couchdb]\n")
f.write("database_dir={0}/data/n_{1}/data\n".format(os.getcwd(), i))
f.write("view_index_dir={0}/data/n_{1}/data\n".format(os.getcwd(), i))
f.write("max_dbs_open=10000\n")
def couch_configs(i):
mk_node_couch_config(i)
return ["{0}/etc/couchdb/default.ini".format(PREFIX),
"{0}/etc/couchdb/default.d/capi.ini".format(PREFIX),
"{0}/etc/couchdb/default.d/geocouch.ini".format(PREFIX),
"couch/n_{0}_conf.ini".format(i)]
def os_specific(args, params):
"""Add os-specific junk to the cluster startup."""
import platform
if platform.system() == 'Darwin':
import resource
## OS X has a pretty tiny default fd limit. Let's increase it
resource.setrlimit(resource.RLIMIT_NOFILE, (2048, 2048))
## Also, we build stuff in kind of dumb ways, so fix the path.
dypath = ("%(pwd)s/../install/lib/memcached:"
"%(pwd)s/../install/lib:/usr/local/lib") % {'pwd': os.getcwd()}
params['env'] = {"DYLD_LIBRARY_PATH": dypath,
"ERL_MAX_PORTS": "2048"}
params['env'].update(os.environ)
ebin_path = None
cluster_extra_args = None
cluster_args_prefix = None
def prepare_start_cluster(extra_args, args_prefix):
global cluster_args_prefix
global cluster_extra_args
global ebin_path
ebin_path = setup_path()
cluster_extra_args = extra_args
cluster_args_prefix = args_prefix
def erlang_args_for_node(i):
logdir = "logs/n_{0}".format(i)
args = cluster_args_prefix + ["erl", "+MMmcs" "30",
"+A", "16", "+sbtu",
"+P", "327680", "-pa"] + ebin_path
args += [
"-setcookie", "nocookie",
"-kernel", "inet_dist_listen_min", "21100",
"inet_dist_listen_max", "21199",
"error_logger", "false",
"-sasl", "sasl_error_logger", "false",
"-couch_ini"] + couch_configs(i)
args += [
"-name", "babysitter_of_n_{0}@127.0.0.1".format(i),
"-hidden",
"-ns_server", "config_path", '"etc/static_config.in"',
"-ns_server", "enable_mlockall", "true",
"error_logger_mf_dir", '"{0}"'.format(logdir),
"error_logger_mf_maxbytes", "10485760",
"error_logger_mf_maxfiles", "10",
"dont_suppress_stderr_logger", "true",
"path_config_etcdir", '"priv"',
"path_config_bindir", '"{0}"'.format(PREFIX+"/bin"),
"path_config_libdir", '"{0}"'.format(PREFIX+"/lib"),
"path_config_datadir", '"data/n_{0}"'.format(i),
"path_config_tmpdir", '"tmp/"',
"rest_port", str(base_api_port + i),
"mccouch_port", str(base_mccouch_port + i),
"memcached_port", str(base_direct_port + i * 2),
"moxi_port", str(base_direct_port + i * 2 + 1),
"memcached_dedicated_port", str(base_direct_port - 1 - i),
"nodefile", "undefined",
"short_name", '"n_{0}"'.format(i),
] + cluster_extra_args
return args
def start_cluster(num_nodes, start_index, host, extra_args, args_prefix):
prepare_start_cluster(extra_args, args_prefix)
def start_node(i):
logdir = "logs/n_{0}".format(i)
try:
os.makedirs(logdir)
except:
pass
args = erlang_args_for_node(i)
params = {}
os_specific(args, params)
if not params.has_key('env'):
params['env'] = {}
params['env'].update(os.environ)
path = params['env']['PATH']
path = (PREFIX+"/bin") + os.pathsep + path
if not params['env'].has_key('ERL_FULLSWEEP_AFTER'):
params['env']['ERL_FULLSWEEP_AFTER'] = '512'
params['env']['PATH'] = path
params['close_fds'] = True
w = None
if "-noinput" in args:
(r,w) = os.pipe()
params['stdin'] = r
if 'setpgrp' in os.__dict__:
# this puts child out of our process group. So that
# Ctrl-C doesn't deliver SIGINT to it, leaving us
# ability to it shutdown carefully or otherwise
params['preexec_fn'] = os.setpgrp
pr = subprocess.Popen(args, **params)
if w != None:
os.close(r)
pr.write_side = w
return pr
return [start_node(i + start_index) for i in xrange(num_nodes)]
def usage():
sys.exit("Usage: {0} [--nodes=N] [--dont-rename] [--dont-start] "
"[--interactive] [--static-cookie] [--start-index=N] "
"[--static-cookie] [--host=H] [--loglevel=L] "
"[ns_server args]".format(sys.argv[0]))
def maybe_spawn_epmd():
try:
socket.create_connection(("127.0.0.1", 4369)).close()
except socket.error:
print("Spawning epmd...\n")
subprocess.Popen("erl -noshell -setcookie nocookie -sname init -run init stop 2>&1 > /dev/null",
shell = True).communicate()
def find_primary_addr():
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
s.connect(("8.8.8.8", 56))
addr, port = s.getsockname()
return addr
except socket.error:
return None
finally:
s.close()
def main():
try:
optlist, args = getopt.gnu_getopt(sys.argv[1:], "hn:i",
["help", "start-index=", "nodes=",
"dont-rename", "interactive",
"static-cookie", "dont-start",
"host=", "loglevel=",
"prepend-extras"])
except getopt.GetoptError, err:
# print help information and exit:
print str(err) # will print something like "option -a not recognized"
usage()
sys.exit(2)
dont_rename = False
dont_start = False
static_cookie = False
interactive_shell = False
start_index = 0
num_nodes = 1
prepend_extras = False
host = "127.0.0.1"
loglevel = 'debug'
for o, a in optlist:
if o in ("--nodes", "-n"):
num_nodes = int(a)
elif o in ("--interactive", "-i"):
interactive_shell = True
elif o == '--dont-start':
dont_start = True
elif o == '--host':
host = a
elif o == '--start-index':
start_index = int(a)
elif o == '--dont-rename':
dont_rename = True
elif o in ("--help", "-h"):
usage()
exit(0)
elif o in("--static-cookie"):
static_cookie = True
elif o == '--loglevel':
loglevel = a
elif o == "--prepend-extras":
prepend_extras = True
else:
assert False, "unhandled options"
nodes = []
terminal_attrs = None
def kill_nodes(*args):
for n in nodes:
if n.write_side != None:
print("Closing %d\n", n.write_side)
# os.write(n.write_side, "shutdown\n") # this line does graceful shutdown versus quick
os.close(n.write_side)
else:
try:
n.kill()
except OSError:
pass
for n in nodes:
n.wait()
if terminal_attrs != None:
termios.tcsetattr(sys.stdin, termios.TCSANOW, terminal_attrs)
atexit.register(kill_nodes)
try:
import termios
terminal_attrs = termios.tcgetattr(sys.stdin)
except:
pass
maybe_spawn_epmd()
extra_args = []
if not dont_rename:
primary_addr = find_primary_addr()
if primary_addr == None:
print("was unable to detect 'internet' address of this machine."
+ " node rename will be disabled")
else:
extra_args += ["rename_ip", '"' + primary_addr + '"']
extra_args += args[1:]
if prepend_extras:
prepend_args = args[0:]
else:
prepend_args = []
extra_args += args[0:]
if static_cookie:
extra_args += ["-ns_server", "dont_reset_cookie", "true"]
if not interactive_shell:
extra_args += ["-noinput"]
if not dont_start:
extra_args += ["-run", "child_erlang", "child_start", "ns_babysitter_bootstrap"]
else:
if not dont_start:
extra_args += ["-run", "ns_babysitter_bootstrap"]
if loglevel not in LOGLEVELS:
print "Valid log levels are the following: %s" % ', '.join(LOGLEVELS)
sys.exit(1)
extra_args += ["-ns_server", "loglevel_stderr", loglevel]
nodes = start_cluster(num_nodes, start_index, host, extra_args, prepend_args)
for node in nodes:
node.wait()
if __name__ == '__main__':
main()