def handle_external_storage_addition(core_v1_client, obj):
"""Deploy service(One service per Volume)"""
volname = obj["metadata"]["name"]
details = obj["spec"]["details"][0]
data = {
"volname": volname,
"volume_id": obj["spec"]["volume_id"],
"type": "External",
"kadalu-format": True,
"gluster_host": details["gluster_host"],
"gluster_volname": details["gluster_volname"],
"gluster_options": details.get("gluster_options", "ignore-me"),
}
# Add new entry in the existing config map
configmap_data = core_v1_client.read_namespaced_config_map(
KADALU_CONFIG_MAP, NAMESPACE)
volinfo_file = "%s.info" % volname
configmap_data.data[volinfo_file] = json.dumps(data)
core_v1_client.patch_namespaced_config_map(KADALU_CONFIG_MAP, NAMESPACE,
configmap_data)
logging.info(
logf("Updated configmap", name=KADALU_CONFIG_MAP, volname=volname))
filename = os.path.join(MANIFESTS_DIR, "external-storageclass.yaml")
template(filename, **data)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(
logf("Deployed External StorageClass",
volname=volname,
manifest=filename))
def handle_added(core_v1_client, obj):
"""
New Volume is requested. Update the configMap and deploy
"""
if not validate_volume_request(obj):
# TODO: Delete Custom resource
return
# Ignore if already deployed
volname = obj["metadata"]["name"]
pods = core_v1_client.list_namespaced_pod(NAMESPACE)
for pod in pods.items:
if pod.metadata.name.startswith("server-" + volname + "-"):
logging.debug(
logf("Ignoring already deployed server statefulsets",
storagename=volname))
return
# Generate new Volume ID
obj["spec"]["volume_id"] = str(uuid.uuid1())
update_config_map(core_v1_client, obj)
deploy_server_pods(obj)
# Deploy service(One service per Volume)
volname = obj["metadata"]["name"]
filename = os.path.join(MANIFESTS_DIR, "services.yaml")
template(filename, namespace=NAMESPACE, volname=volname)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(logf("Deployed Service", volname=volname, manifest=filename))
def create_virtblock_volume(hostvol_mnt, volname, size):
"""Create virtual block volume"""
volhash = get_volname_hash(volname)
volpath = get_volume_path(PV_TYPE_VIRTBLOCK, volhash, volname)
volpath_full = os.path.join(hostvol_mnt, volpath)
logging.debug(logf("Volume hash", volhash=volhash))
# Create a file with required size
makedirs(os.path.dirname(volpath_full))
logging.debug(
logf("Created virtblock directory", path=os.path.dirname(volpath)))
volpath_fd = os.open(volpath_full, os.O_CREAT | os.O_RDWR)
os.close(volpath_fd)
os.truncate(volpath_full, size)
logging.debug(
logf("Truncated file to required size", path=volpath, size=size))
# TODO: Multiple FS support based on volume_capability mount option
execute(MKFS_XFS_CMD, volpath_full)
logging.debug(
logf("Created Filesystem", path=volpath, command=MKFS_XFS_CMD))
save_pv_metadata(hostvol_mnt, volpath, size)
return Volume(
volname=volname,
voltype=PV_TYPE_VIRTBLOCK,
volhash=volhash,
hostvol=os.path.basename(hostvol_mnt),
size=size,
volpath=volpath,
)
def mount_volume(pvpath, target_path, pvtype, fstype=None):
"""Mount a Volume"""
if pvtype == PV_TYPE_VIRTBLOCK:
fstype = "xfs" if fstype is None else fstype
execute(MOUNT_CMD, "-t", fstype, pvpath, target_path)
else:
execute(MOUNT_CMD, "--bind", pvpath, target_path)
def deploy_config_map(core_v1_client):
"""Deploys the template configmap if not exists"""
configmaps = core_v1_client.list_namespaced_config_map(NAMESPACE)
create_cmd = "create"
uid = uuid.uuid4()
for item in configmaps.items:
if item.metadata.name == KADALU_CONFIG_MAP:
logging.info(
logf("Found existing configmap. Updating",
name=item.metadata.name))
create_cmd = "apply"
# Don't overwrite UID info.
configmap_data = core_v1_client.read_namespaced_config_map(
KADALU_CONFIG_MAP, NAMESPACE)
if configmap_data.data.get("uid", None):
uid = configmap_data.data["uid"]
# Keep the config details required to be preserved.
# Deploy Config map
filename = os.path.join(MANIFESTS_DIR, "configmap.yaml")
template(filename, namespace=NAMESPACE, kadalu_version=VERSION, uid=uid)
execute(KUBECTL_CMD, create_cmd, "-f", filename)
logging.info(logf("Deployed ConfigMap", manifest=filename))
return uid
def create_and_mount_brick(brick_device, brick_path, brickfs):
"""
Create brick filesystem and mount the brick. Currently
only xfs is supported
"""
# If brick device path is not starts with /dev then use
# /brickdev prefix. Brick device directory passed by the user
# is mounted as /brickdev to avoid mixing with any other
# dirs inside container.
if not brick_device.startswith("/dev/"):
brick_device = "/brickdev/" + os.path.basename(brick_device)
if brickfs == "xfs":
try:
execute("mkfs.xfs", brick_device)
except CommandException as err:
if b"appears to contain an existing filesystem" not in err.err:
logging.error(
logf(
"Failed to create file system",
fstype=brickfs,
device=brick_device,
))
sys.exit(1)
mountdir = os.path.dirname(brick_path)
os.makedirs(mountdir, mode=0o755, exist_ok=True)
execute("mount", "-oprjquota", brick_device, mountdir)
def deploy_server_pods(obj):
"""
Deploy server pods depending on type of Hosting
Volume and other options specified
"""
# Deploy server pod
volname = obj["metadata"]["name"]
docker_user = os.environ.get("DOCKER_USER", "kadalu")
template_args = {
"namespace": NAMESPACE,
"kadalu_version": VERSION,
"docker_user": docker_user,
"volname": volname,
"volume_id": obj["spec"]["volume_id"]
}
# One StatefulSet per Brick
for idx, brick in enumerate(obj["spec"]["storage"]):
template_args["host_brick_path"] = brick.get("path", "")
template_args["kube_hostname"] = brick["node"]
template_args["brick_path"] = "/bricks/%s/data/brick" % volname
template_args["brick_index"] = idx
template_args["brick_device"] = brick.get("device", "")
template_args["brick_device_dir"] = get_brick_device_dir(brick)
filename = os.path.join(MANIFESTS_DIR, "server.yaml")
template(filename, **template_args)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(
logf("Deployed Server pod",
volname=volname,
manifest=filename,
node=brick["node"]))
def deploy_storage_class():
"""Deploys the default storage class for KaDalu if not exists"""
api_instance = client.StorageV1Api()
scs = api_instance.list_storage_class()
sc_names = []
for tmpl in os.listdir(MANIFESTS_DIR):
if tmpl.startswith("storageclass-"):
sc_names.append(
tmpl.replace("storageclass-", "").replace(".yaml.j2", ""))
installed_scs = [item.metadata.name for item in scs.items]
for sc_name in sc_names:
filename = os.path.join(MANIFESTS_DIR,
"storageclass-%s.yaml" % sc_name)
if sc_name in installed_scs:
logging.info(
logf("Ignoring already deployed StorageClass",
manifest=filename))
continue
# Deploy Storage Class
template(filename, namespace=NAMESPACE, kadalu_version=VERSION)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(logf("Deployed StorageClass", manifest=filename))
def mount_glusterfs_with_host(volname, target_path, host, options=None):
"""Mount Glusterfs Volume"""
# Ignore if already mounted
if is_gluster_mount_proc_running(volname, target_path):
logging.debug(logf(
"Already mounted",
mount=target_path
))
return
if not os.path.exists(target_path):
makedirs(target_path)
# FIXME: make this better later (an issue for external contribution)
# opt_array = None
# if options:
# opt_array = []
# for opt in options.split(","):
# if not opt or opt == "":
# break
# for k,v in opt.split("="):
# if k == "log-level":
# opt_array.append("--log-level")
# opt_array.append(v)
# # TODO: handle more options, and document them
# Fix the log, so we can check it out later
# log_file = "/var/log/gluster/%s.log" % target_path.replace("/", "-")
log_file = "/var/log/gluster/gluster.log"
cmd = [
GLUSTERFS_CMD,
"--process-name", "fuse",
"-l", "%s" % log_file,
"--volfile-id", volname,
"-s", host,
target_path
]
# if opt_array:
# cmd.extend(opt_array)
#
# # add mount point after all options
# cmd.append(target_path)
logging.debug(logf(
"glusterfs command",
cmd=cmd
))
try:
execute(*cmd)
except CommandException as err:
logging.info(logf(
"mount command failed",
cmd=cmd,
error=err,
))
return
def mount_glusterfs(volume, target_path):
"""Mount Glusterfs Volume"""
if not os.path.exists(target_path):
makedirs(target_path)
# Ignore if already mounted
if os.path.ismount(target_path):
logging.debug(logf("Already mounted", mount=target_path))
return
# This is just to prevent multiple requests getting here in parallel
target_path_lock = "%s.lock" % target_path
while True:
if not os.path.exists(target_path_lock):
# Need to create a dummy file, no need to do IO
# Hence no open and close business
os.mknod(target_path_lock)
break
time.sleep(0.2)
# Ignore if already mounted
if os.path.ismount(target_path):
logging.debug(logf("Already mounted (2nd try)", mount=target_path))
os.unlink(target_path_lock)
return
if volume['type'] == 'External':
# Try to mount the Host Volume, handle failure if
# already mounted
mount_glusterfs_with_host(volume['g_volname'], target_path,
volume['g_host'], volume['g_options'])
os.unlink(target_path_lock)
return
generate_client_volfile(volume['name'])
# Fix the log, so we can check it out later
# log_file = "/var/log/gluster/%s.log" % target_path.replace("/", "-")
log_file = "/var/log/gluster/gluster.log"
cmd = [
GLUSTERFS_CMD, "--process-name", "fuse", "-l", log_file,
"--volfile-id", volume['name'], "-f",
"%s/%s.client.vol" % (VOLFILES_DIR, volume['name']), target_path
]
try:
execute(*cmd)
except Exception as err:
logging.error(
logf("error to execute command",
volume=volume,
cmd=cmd,
error=format(err)))
os.unlink(target_path_lock)
raise err
os.unlink(target_path_lock)
return
def mount_volume(pvpath, mountpoint, pvtype, fstype=None):
"""Mount a Volume"""
if pvtype == PV_TYPE_VIRTBLOCK:
fstype = "xfs" if fstype is None else fstype
execute(MOUNT_CMD, "-t", fstype, pvpath, mountpoint)
else:
execute(MOUNT_CMD, "--bind", pvpath, mountpoint)
os.chmod(mountpoint, 0o777)
def mount_glusterfs(volume, mountpoint, is_client=False):
"""Mount Glusterfs Volume"""
if volume["type"] == "External":
volname = volume['g_volname']
else:
volname = volume["name"]
# Ignore if already glusterfs process running for that volume
if is_gluster_mount_proc_running(volname, mountpoint):
logging.debug(logf("Already mounted", mount=mountpoint))
return
# Ignore if already mounted
if is_gluster_mount_proc_running(volname, mountpoint):
logging.debug(logf("Already mounted (2nd try)", mount=mountpoint))
return
if not os.path.exists(mountpoint):
makedirs(mountpoint)
if volume['type'] == 'External':
# Try to mount the Host Volume, handle failure if
# already mounted
with mount_lock:
mount_glusterfs_with_host(volume['g_volname'], mountpoint,
volume['g_host'], volume['g_options'],
is_client)
return
with mount_lock:
generate_client_volfile(volume['name'])
# Fix the log, so we can check it out later
# log_file = "/var/log/gluster/%s.log" % mountpoint.replace("/", "-")
log_file = "/var/log/gluster/gluster.log"
cmd = [
GLUSTERFS_CMD, "--process-name", "fuse", "-l", log_file,
"--volfile-id", volume['name'], "--fs-display-name",
"kadalu:%s" % volume['name'], "-f",
"%s/%s.client.vol" % (VOLFILES_DIR, volume['name']), mountpoint
]
## required for 'simple-quota'
if not is_client:
cmd.extend(["--client-pid", "-14"])
try:
execute(*cmd)
except CommandException as err:
logging.error(
logf("error to execute command",
volume=volume,
cmd=cmd,
error=format(err)))
raise err
return
def unmount_volume(mountpoint):
"""Unmount a Volume"""
if mountpoint.find("volumeDevices"):
# Should remove loop device as well or else duplicate loop devices will
# be setup everytime
cmd = ["findmnt", "-T", mountpoint, "-oSOURCE", "-n"]
device, _, _ = execute(*cmd)
if match := re.search(r'loop\d+', device):
loop = match.group(0)
cmd = ["losetup", "-d", f"/dev/{loop}"]
execute(*cmd)
def set_quota(rootdir, subdir_path, quota_value):
"""
Set Quota for given subdir path. Get project
ID from directory inode
"""
ino = os.lstat(subdir_path).st_ino
execute("xfs_quota", "-x", "-c",
'project -s -p %s %d' % (subdir_path, ino), rootdir)
execute("xfs_quota", "-x", "-c",
'limit -p bhard=%s %d' % (quota_value, ino), rootdir)
def create_virtblock_volume(hostvol_mnt, volname, size):
"""Create virtual block volume"""
volhash = get_volname_hash(volname)
volpath = get_volume_path(PV_TYPE_VIRTBLOCK, volhash, volname)
volpath_full = os.path.join(hostvol_mnt, volpath)
logging.debug(logf(
"Volume hash",
volhash=volhash
))
# Check for mount availability before creating virtblock volume
retry_errors(os.statvfs, [hostvol_mnt], [ENOTCONN])
# Create a file with required size
makedirs(os.path.dirname(volpath_full))
logging.debug(logf(
"Created virtblock directory",
path=os.path.dirname(volpath)
))
if os.path.exists(volpath_full):
rand = time.time()
logging.info(logf(
"Getting 'Create request' on existing file, renaming.",
path=volpath_full, random=rand
))
os.rename(volpath_full, "%s.%s" % (volpath_full, rand))
volpath_fd = os.open(volpath_full, os.O_CREAT | os.O_RDWR)
os.close(volpath_fd)
os.truncate(volpath_full, size)
logging.debug(logf(
"Truncated file to required size",
path=volpath,
size=size
))
# TODO: Multiple FS support based on volume_capability mount option
execute(MKFS_XFS_CMD, volpath_full)
logging.debug(logf(
"Created Filesystem",
path=volpath,
command=MKFS_XFS_CMD
))
save_pv_metadata(hostvol_mnt, volpath, size)
return Volume(
volname=volname,
voltype=PV_TYPE_VIRTBLOCK,
volhash=volhash,
hostvol=os.path.basename(hostvol_mnt),
size=size,
volpath=volpath,
)
def set_quota(rootdir, subdir_path, quota_value):
"""
Set Quota for given subdir path. Get project
ID from directory inode. XFS can have 64 bit inodes
so strip it to 32 bit and hope not to clash.
"""
ino = os.lstat(subdir_path).st_ino % PROJECT_MOD
execute("xfs_quota", "-x", "-c",
'project -s -p %s %d' % (subdir_path, ino), rootdir)
execute("xfs_quota", "-x", "-c",
'limit -p bhard=%s %d' % (quota_value, ino), rootdir)
def handle_added(core_v1_client, obj):
"""
New Volume is requested. Update the configMap and deploy
"""
if not validate_volume_request(obj):
# TODO: Delete Custom resource
logging.debug(logf("validation of volume request failed", yaml=obj))
return
# Ignore if already deployed
volname = obj["metadata"]["name"]
pods = core_v1_client.list_namespaced_pod(NAMESPACE)
for pod in pods.items:
if pod.metadata.name.startswith("server-" + volname + "-"):
logging.debug(
logf("Ignoring already deployed server statefulsets",
storagename=volname))
return
# Add new entry in the existing config map
configmap_data = core_v1_client.read_namespaced_config_map(
KADALU_CONFIG_MAP, NAMESPACE)
if configmap_data.data.get("%s.info" % volname, None):
# Volume already exists
logging.debug(
logf("Ignoring already updated volume config",
storagename=volname))
return
# Generate new Volume ID
obj["spec"]["volume_id"] = str(uuid.uuid1())
voltype = obj["spec"]["type"]
if voltype == "External":
handle_external_storage_addition(core_v1_client, obj)
return
# Generate Node ID for each storage device.
for idx, _ in enumerate(obj["spec"]["storage"]):
obj["spec"]["storage"][idx]["node_id"] = str(uuid.uuid1())
update_config_map(core_v1_client, obj)
deploy_server_pods(obj)
filename = os.path.join(MANIFESTS_DIR, "services.yaml")
template(filename, namespace=NAMESPACE, volname=volname)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(logf("Deployed Service", volname=volname, manifest=filename))
def deploy_server_pods(obj):
"""
Deploy server pods depending on type of Hosting
Volume and other options specified
"""
# Deploy server pod
volname = obj["metadata"]["name"]
voltype = obj["spec"]["type"]
docker_user = os.environ.get("DOCKER_USER", "kadalu")
shd_required = False
if voltype in (VOLUME_TYPE_REPLICA_3, VOLUME_TYPE_REPLICA_2):
shd_required = True
template_args = {
"namespace": NAMESPACE,
"kadalu_version": VERSION,
"docker_user": docker_user,
"volname": volname,
"voltype": voltype,
"volume_id": obj["spec"]["volume_id"],
"shd_required": shd_required
}
# One StatefulSet per Brick
for idx, storage in enumerate(obj["spec"]["storage"]):
template_args["host_brick_path"] = storage.get("path", "")
template_args["kube_hostname"] = storage.get("node", "")
# TODO: Understand the need, and usage of suffix
template_args["serverpod_name"] = get_brick_hostname(volname,
storage.get(
"node",
"pvc"),
idx,
suffix=False)
template_args["brick_path"] = "/bricks/%s/data/brick" % volname
template_args["brick_index"] = idx
template_args["brick_device"] = storage.get("device", "")
template_args["pvc_name"] = storage.get("pvc", "")
template_args["brick_device_dir"] = get_brick_device_dir(storage)
template_args["brick_node_id"] = storage["node_id"]
filename = os.path.join(MANIFESTS_DIR, "server.yaml")
template(filename, **template_args)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(
logf("Deployed Server pod",
volname=volname,
manifest=filename,
node=storage.get("node", "")))
def deploy_storage_class():
"""Deploys the default storage class for KaDalu if not exists"""
api_instance = client.StorageV1Api()
scs = api_instance.list_storage_class()
for item in scs.items:
if item.metadata.name.startswith(STORAGE_CLASS_NAME_PREFIX):
return
# Deploy Storage Class
filename = os.path.join(MANIFESTS_DIR, "storageclass.yaml")
template(filename, namespace=NAMESPACE, kadalu_version=VERSION)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(logf("Deployed StorageClass", manifest=filename))
def deploy_config_map(core_v1_client):
"""Deploys the template configmap if not exists"""
configmaps = core_v1_client.list_namespaced_config_map(NAMESPACE)
for item in configmaps.items:
if item.metadata.name == KADALU_CONFIG_MAP:
logging.debug(
logf("Found existing configmap", name=item.metadata.name))
return
# Deploy Config map
filename = os.path.join(MANIFESTS_DIR, "configmap.yaml")
template(filename, namespace=NAMESPACE, kadalu_version=VERSION)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(logf("Deployed ConfigMap", manifest=filename))
def mount_glusterfs(volume, target_path):
"""Mount Glusterfs Volume"""
if not os.path.exists(target_path):
os.makedirs(target_path, exist_ok=True)
# Ignore if already mounted
if os.path.ismount(target_path):
return
generate_client_volfile(volume)
cmd = [
GLUSTERFS_CMD, "--process-name", "fuse", "-l", "/dev/stdout",
"--volfile-id=%s" % volume, target_path, "-f",
"%s/%s.client.vol" % (VOLFILES_DIR, volume)
]
execute(*cmd)
def reload_glusterfs(volume):
"""Mount Glusterfs Volume"""
if volume["type"] == "External":
return False
volname = volume["name"]
if not VOL_DATA.get(volname, None):
return False
# Ignore if already glusterfs process running for that volume
with mount_lock:
if not generate_client_volfile(volname):
return False
# TODO: ideally, keep the pid in structure for easier access
# pid = VOL_DATA[volname]["pid"]
# cmd = ["kill", "-HUP", str(pid)]
cmd = [
"ps", "--no-header", "-ww", "-o", "pid,command", "-C", "glusterfs"
]
try:
out, err, _ = execute(*cmd)
send_signal_to_process(volname, out, "-HUP")
except CommandException as err:
logging.error(
logf("error to execute command",
volume=volume,
cmd=cmd,
error=format(err)))
return False
return True
def mount_glusterfs(volume, target_path):
"""Mount Glusterfs Volume"""
if not os.path.exists(target_path):
makedirs(target_path)
# Ignore if already mounted
if os.path.ismount(target_path):
logging.debug(logf("Already mounted", mount=target_path))
return
# Ignore if already mounted
if os.path.ismount(target_path):
logging.debug(logf("Already mounted (2nd try)", mount=target_path))
return
if volume['type'] == 'External':
# Try to mount the Host Volume, handle failure if
# already mounted
with mount_lock:
mount_glusterfs_with_host(volume['g_volname'], target_path,
volume['g_host'], volume['g_options'])
return
with mount_lock:
generate_client_volfile(volume['name'])
# Fix the log, so we can check it out later
# log_file = "/var/log/gluster/%s.log" % target_path.replace("/", "-")
log_file = "/var/log/gluster/gluster.log"
cmd = [
GLUSTERFS_CMD, "--process-name", "fuse", "-l", log_file,
"--volfile-id", volume['name'], "-f",
"%s/%s.client.vol" % (VOLFILES_DIR, volume['name']), target_path
]
try:
execute(*cmd)
except CommandException as err:
logging.error(
logf("error to execute command",
volume=volume,
cmd=cmd,
error=format(err)))
raise err
return
def deploy_csi_pods(core_v1_client):
"""
Look for CSI pods, if any one CSI pod found then
that means it is deployed
"""
pods = core_v1_client.list_namespaced_pod(NAMESPACE)
for pod in pods.items:
if pod.metadata.name.startswith(CSI_POD_PREFIX):
logging.debug("Ignoring already deployed CSI pods")
return
# Deploy CSI Pods
filename = os.path.join(MANIFESTS_DIR, "csi.yaml")
docker_user = os.environ.get("DOCKER_USER", "kadalu")
template(filename,
namespace=NAMESPACE,
kadalu_version=VERSION,
docker_user=docker_user)
execute(KUBECTL_CMD, "create", "-f", filename)
logging.info(logf("Deployed CSI Pods", manifest=filename))
def get_quota_report(rootdir):
"""Get Project Quota Report"""
try:
out, _ = execute("xfs_quota", "-x", "-c", 'report -p -b', rootdir)
return out.split(b"\n")
except CommandException as err:
logging.error(
logf("Failed to get Quota Report",
rootdir=rootdir,
err=err.err,
ret=err.ret))
return []
def deploy_csi_pods(core_v1_client):
"""
Look for CSI pods, if any one CSI pod found then
that means it is deployed
"""
create_cmd = "create"
pods = core_v1_client.list_namespaced_pod(NAMESPACE)
for pod in pods.items:
if pod.metadata.name.startswith(CSI_POD_PREFIX):
logging.info("Updating already deployed CSI pods")
create_cmd = "apply"
# Deploy CSI Pods
api_instance = client.VersionApi().get_code()
if api_instance.major > "1" or api_instance.major == "1" and \
api_instance.minor >= "14":
filename = os.path.join(MANIFESTS_DIR, "csi-driver-object.yaml")
template(filename, namespace=NAMESPACE, kadalu_version=VERSION)
execute(KUBECTL_CMD, create_cmd, "-f", filename)
else:
filename = os.path.join(MANIFESTS_DIR, "csi-driver-crd.yaml")
template(filename, namespace=NAMESPACE, kadalu_version=VERSION)
execute(KUBECTL_CMD, create_cmd, "-f", filename)
filename = os.path.join(MANIFESTS_DIR, "csi.yaml")
docker_user = os.environ.get("DOCKER_USER", "kadalu")
template(filename,
namespace=NAMESPACE,
kadalu_version=VERSION,
docker_user=docker_user,
k8s_dist=K8S_DIST,
kubelet_dir=KUBELET_DIR)
execute(KUBECTL_CMD, create_cmd, "-f", filename)
logging.info(logf("Deployed CSI Pods", manifest=filename))
def create_and_mount_brick(brick_device, brick_path, brickfs):
"""
Create brick filesystem and mount the brick. Currently
only xfs is supported
"""
# If brick device path is not starts with /dev then use
# /brickdev prefix. Brick device directory passed by the user
# is mounted as /brickdev to avoid mixing with any other
# dirs inside container.
if not brick_device.startswith("/dev/"):
brick_device = "/brickdev/" + os.path.basename(brick_device)
mountdir = os.path.dirname(brick_path)
os.makedirs(mountdir,
mode=0o755,
exist_ok=True)
try:
execute("mount", brick_device, mountdir)
except CommandException as err:
if 'wrong fs type' in err.err:
# This error pops up when we do mount on an empty device or wrong fs
# Try doing a mkfs and try mount
try:
execute("mkfs.xfs", brick_device)
except CommandException as err:
if "appears to contain an existing filesystem" not in err.err:
logging.error(logf(
"Failed to create file system",
fstype=brickfs,
device=brick_device,
))
sys.exit(1)
else:
pass
try:
execute("mount", brick_device, mountdir)
except CommandException as err:
logging.error(logf(
"Failed to mount export brick (after mkfs)",
fstype=brickfs,
device=brick_device,
mountdir=mountdir,
error=err,
))
sys.exit(1)
elif 'already mounted' not in err.err:
logging.error(logf(
"Failed to mount export brick",
fstype=brickfs,
device=brick_device,
mountdir=mountdir,
error=err,
))
sys.exit(1)
else:
pass
def send_signal_to_process(volname, out, sig):
"""Sends the signal to one of the process"""
for line in out.split("\n"):
parts = line.split()
pid = parts[0]
for part in parts:
if part.startswith("--volume-id="):
if part.split("=")[-1] == volname:
cmd = ["kill", sig, pid]
try:
execute(*cmd)
except CommandException as err:
logging.error(
logf("error to execute command",
volume=volname,
cmd=cmd,
error=format(err)))
return
logging.debug(logf("Sent SIGHUP to glusterfs process", volname=volname))
return
def update_virtblock_volume(hostvol_mnt, volname, expansion_requested_pvsize):
"""Update virtual block volume"""
volhash = get_volname_hash(volname)
volpath = get_volume_path(PV_TYPE_VIRTBLOCK, volhash, volname)
volpath_full = os.path.join(hostvol_mnt, volpath)
logging.debug(logf("Volume hash", volhash=volhash))
# Check for mount availability before updating virtblock volume
retry_errors(os.statvfs, [hostvol_mnt], [ENOTCONN])
# Update the file with required size
makedirs(os.path.dirname(volpath_full))
logging.debug(
logf("Updated virtblock directory", path=os.path.dirname(volpath)))
volpath_fd = os.open(volpath_full, os.O_CREAT | os.O_RDWR)
os.close(volpath_fd)
execute("truncate", "-s", expansion_requested_pvsize, volpath_full)
logging.debug(
logf("Truncated file to required size",
path=volpath,
size=expansion_requested_pvsize))
# TODO: Multiple FS support based on volume_capability mount option
execute(MKFS_XFS_CMD, volpath_full)
logging.debug(
logf("Created Filesystem", path=volpath, command=MKFS_XFS_CMD))
update_pv_metadata(hostvol_mnt, volpath, expansion_requested_pvsize)
return Volume(
volname=volname,
voltype=PV_TYPE_VIRTBLOCK,
volhash=volhash,
hostvol=os.path.basename(hostvol_mnt),
size=expansion_requested_pvsize,
volpath=volpath,
)
def execute_gluster_quota_command(privkey, user, host, gvolname, path, size):
"""
Function to execute the GlusterFS's quota command on external cluster
"""
# 'size' can always be parsed as integer with no errors
size = int(size) * 0.95
host = reachable_host(host)
if host is None:
errmsg = "All hosts are not reachable"
logging.error(logf(errmsg))
return errmsg
quota_cmd = [
"ssh",
"-oStrictHostKeyChecking=no",
"-i",
"%s" % privkey,
"%s@%s" % (user, host),
"sudo",
"gluster",
"volume",
"quota",
"%s" % gvolname,
"limit-usage",
"/%s" % path,
"%s" % size,
]
try:
execute(*quota_cmd)
except CommandException as err:
errmsg = "Unable to set Gluster Quota via ssh"
logging.error(logf(errmsg, error=err))
return errmsg
return None
