def create_swapfile(fname: str, size: str) -> None:
"""Size is in MiB."""
errmsg = "Failed to create swapfile '%s' of size %sMB via %s: %s"
def create_swap(fname, size, method):
LOG.debug(
"Creating swapfile in '%s' on fstype '%s' using '%s'",
fname,
fstype,
method,
)
if method == "fallocate":
cmd = ["fallocate", "-l", "%sM" % size, fname]
elif method == "dd":
cmd = [
"dd",
"if=/dev/zero",
"of=%s" % fname,
"bs=1M",
"count=%s" % size,
]
try:
subp.subp(cmd, capture=True)
except subp.ProcessExecutionError as e:
LOG.info(errmsg, fname, size, method, e)
util.del_file(fname)
raise
swap_dir = os.path.dirname(fname)
util.ensure_dir(swap_dir)
fstype = util.get_mount_info(swap_dir)[1]
if (fstype == "xfs" and util.kernel_version() <
(4, 18)) or fstype == "btrfs":
create_swap(fname, size, "dd")
else:
try:
create_swap(fname, size, "fallocate")
except subp.ProcessExecutionError:
LOG.info("fallocate swap creation failed, will attempt with dd")
create_swap(fname, size, "dd")
if os.path.exists(fname):
util.chmod(fname, 0o600)
try:
subp.subp(["mkswap", fname])
except subp.ProcessExecutionError:
util.del_file(fname)
raise
def create_swapfile(fname, size):
"""Size is in MiB."""
errmsg = "Failed to create swapfile '%s' of size %dMB via %s: %s"
def create_swap(fname, size, method):
LOG.debug("Creating swapfile in '%s' on fstype '%s' using '%s'", fname,
fstype, method)
if method == "fallocate":
cmd = ['fallocate', '-l', '%dM' % size, fname]
elif method == "dd":
cmd = [
'dd', 'if=/dev/zero',
'of=%s' % fname, 'bs=1M',
'count=%d' % size
]
try:
util.subp(cmd, capture=True)
except util.ProcessExecutionError as e:
LOG.warning(errmsg, fname, size, method, e)
util.del_file(fname)
swap_dir = os.path.dirname(fname)
util.ensure_dir(swap_dir)
fstype = util.get_mount_info(swap_dir)[1]
if fstype in ("xfs", "btrfs"):
create_swap(fname, size, "dd")
else:
try:
create_swap(fname, size, "fallocate")
except util.ProcessExecutionError as e:
LOG.warning(errmsg, fname, size, "dd", e)
LOG.warning("Will attempt with dd.")
create_swap(fname, size, "dd")
util.chmod(fname, 0o600)
try:
util.subp(['mkswap', fname])
except util.ProcessExecutionError:
util.del_file(fname)
raise
def handle(name, cfg, cloud, log, _args):
try:
# Go Agent Config Prefix
go_agent_prefix = "goagent_"
go_agent_default = "/etc/default/go-agent"
go_server_prefix = "goserver_"
go_server_config_dir = "/var/lib/go-agent/config"
if not os.path.exists(go_server_config_dir):
os.makedirs(go_server_config_dir)
util.chownbyname(go_server_config_dir, "go", "go")
go_server_config = go_server_config_dir + "/autoregister.properties"
# Make sure Go Agent is not running
util.subp(['service', 'go-agent', 'stop'])
md = cloud.datasource.metadata
for key in md['meta']:
if key.startswith(go_agent_prefix):
replace_config(go_agent_default, key[len(go_agent_prefix):],
md['meta'][key])
elif key.startswith(go_server_prefix):
replace_config(go_server_config, key[len(go_server_prefix):],
md['meta'][key])
# Use Openstack Instance ID as Go Elastic Agent ID for auto registraton
replace_config(go_server_config,
"agent.auto.register.elasticAgent.agentId", md['uuid'])
if os.path.exists(go_server_config):
util.chownbyname(go_server_config, "go", "go")
if os.path.exists(go_agent_default):
util.chmod(go_agent_default, '0644')
# Start Go Agent
util.subp(['service', 'go-agent', 'start'])
except:
log.error("Error configuring Go Agent")
return
def handle(name, cfg, cloud, log, _args):
try:
# Make sure Go Agent is not running
util.subp(['service', 'go-agent', 'stop'])
# Go Agent Config Prefix
go_agent_prefix = "goagent_"
go_agent_default = "/etc/default/go-agent"
go_server_prefix = "goserver_"
go_server_config_dir = "/var/lib/go-agent/config"
if not os.path.exists(go_server_config_dir):
os.makedirs(go_server_config_dir)
util.chownbyname(go_server_config_dir,"go","go")
go_server_config = go_server_config_dir + "/autoregister.properties"
md = cloud.datasource.metadata
for key in md['meta']:
if key.startswith(go_agent_prefix):
replace_config(go_agent_default,key[len(go_agent_prefix):],md['meta'][key])
elif key.startswith(go_server_prefix):
replace_config(go_server_config,key[len(go_server_prefix):],md['meta'][key])
replace_config(go_server_config,"agent.auto.register.elasticAgent.agentId",md['instance-id'])
if os.path.exists(go_server_config):
util.chownbyname(go_server_config,"go","go")
if os.path.exists(go_agent_default):
util.chmod(go_agent_default,0644)
# Start Go Agent
util.subp(['service', 'go-agent', 'start'])
except:
log.debug("Error configuring Go Agent")
return
