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|
#!/bin/env python3
# crun - OCI runtime written in C
#
# Copyright (C) 2017, 2018, 2019 Giuseppe Scrivano <giuseppe@scrivano.org>
# crun is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# crun is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with crun. If not, see <http://www.gnu.org/licenses/>.
import subprocess
import sys
import time
from tests_utils import *
def test_resources_fail_with_enoent():
if is_rootless():
return 77
if not is_cgroup_v2_unified():
return 77
conf = base_config()
add_all_namespaces(conf)
conf['linux']['resources'] = {"unified" : {"memory.DOESNTEXIST" : "baz"}}
conf['process']['args'] = ['/init', 'echo', 'hi']
proc, _ = run_and_get_output(conf, use_popen=True)
out, _ = proc.communicate()
if "no such file or directory" in out.decode().lower():
return 0
return -1
def test_resources_pid_limit():
if is_rootless():
return 77
conf = base_config()
conf['linux']['resources'] = {"pids" : {"limit" : 1024}}
add_all_namespaces(conf)
fn = "/sys/fs/cgroup/pids/pids.max"
if is_cgroup_v2_unified():
fn = "/sys/fs/cgroup/pids.max"
conf['linux']['namespaces'].append({"type" : "cgroup"})
conf['process']['args'] = ['/init', 'cat', fn]
out, _ = run_and_get_output(conf)
if "1024" not in out:
sys.stderr.write("# found %s instead of 1024\n" % out)
return -1
return 0
def test_resources_pid_limit_userns():
if is_rootless():
return 77
conf = base_config()
conf['linux']['resources'] = {"pids" : {"limit" : 1024}}
add_all_namespaces(conf)
mappings = [
{
"containerID": 0,
"hostID": 1,
"size": 1,
},
{
"containerID": 1,
"hostID": 0,
"size": 1,
},
{
"containerID": 2,
"hostID": 2,
"size": 2**32-3,
},
]
conf['linux']['namespaces'].append({"type" : "user"})
conf['linux']['uidMappings'] = mappings
conf['linux']['gidMappings'] = mappings
fn = "/sys/fs/cgroup/pids/pids.max"
if is_cgroup_v2_unified():
fn = "/sys/fs/cgroup/pids.max"
conf['linux']['namespaces'].append({"type" : "cgroup"})
conf['process']['args'] = ['/init', 'cat', fn]
out, _ = run_and_get_output(conf)
if "1024" not in out:
sys.stderr.write("# found %s instead of 1024\n" % out)
return -1
return 0
def test_resources_unified_invalid_controller():
if not is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'pause']
conf['linux']['resources'] = {}
conf['linux']['resources']['unified'] = {
"foo.bar": "doesntmatter"
}
cid = None
try:
out, cid = run_and_get_output(conf, command='run', detach=True)
# must raise an exception, fail if it doesn't.
return -1
except Exception as e:
output = e.stdout.decode("utf-8").strip()
if 'controller `foo` is not available under' in output:
return 0
if 'the requested cgroup controller `foo` is not available' in output:
return 0
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_unified_invalid_key():
if not is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'pause']
conf['linux']['resources'] = {}
conf['linux']['resources']['unified'] = {
"NOT-A-VALID-KEY": "doesntmatter"
}
cid = None
try:
out, cid = run_and_get_output(conf, command='run', detach=True)
# must raise an exception, fail if it doesn't.
return -1
except Exception as e:
if 'the specified key has not the form CONTROLLER.VALUE `NOT-A-VALID-KEY`' in e.stdout.decode("utf-8").strip():
return 0
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_unified():
if not is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'pause']
conf['linux']['resources'] = {}
conf['linux']['resources']['unified'] = {
"memory.high": "1073741824"
}
cid = None
try:
_, cid = run_and_get_output(conf, command='run', detach=True)
out = run_crun_command(["exec", cid, "/init", "cat", "/sys/fs/cgroup/memory.high"])
if "1073741824" not in out:
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_cpu_weight():
if not is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'pause']
conf['linux']['resources'] = {}
conf['linux']['resources']['unified'] = {
"cpu.weight": "1234"
}
cid = None
try:
_, cid = run_and_get_output(conf, command='run', detach=True)
out = run_crun_command(["exec", cid, "/init", "cat", "/sys/fs/cgroup/cpu.weight"])
if "1234" not in out:
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_cgroupv2_swap_0():
if not is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'pause']
conf['linux']['resources'] = {}
conf['linux']['resources']['memory'] = {
"swap": 0
}
cid = None
try:
_, cid = run_and_get_output(conf, command='run', detach=True)
out = run_crun_command(["exec", cid, "/init", "cat", "/sys/fs/cgroup/memory.swap.max"])
if "0" not in out:
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_cpu_quota_minus_one():
if is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'cat', '/sys/fs/cgroup/cpu/cpu.cfs_quota_us']
conf['linux']['resources'] = {}
conf['linux']['resources']['cpu'] = {
"quota": -1
}
cid = None
try:
out, cid = run_and_get_output(conf, command='run')
if "-1" not in out:
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_cpu_weight_systemd():
if not is_cgroup_v2_unified() or is_rootless():
return 77
if 'SYSTEMD' not in get_crun_feature_string():
return 77
if not running_on_systemd():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'pause']
conf['linux']['resources'] = {}
conf['linux']['resources']['unified'] = {
"cpu.weight": "1234"
}
cid = None
try:
_, cid = run_and_get_output(conf, command='run', detach=True, cgroup_manager="systemd")
out = run_crun_command(["exec", cid, "/init", "cat", "/sys/fs/cgroup/cpu.weight"])
if "1234" not in out:
sys.stderr.write("# found wrong CPUWeight for the container cgroup\n")
return -1
state = run_crun_command(['state', cid])
scope = json.loads(state)['systemd-scope']
out = subprocess.check_output(['systemctl', 'show','-PCPUWeight', scope ], close_fds=False).decode().strip()
# try once more against the user manager, as if one exists, crun will prefer it; see bug #1197
if out != "1234":
out = subprocess.check_output(['systemctl', '--user', 'show','-PCPUWeight', scope ], close_fds=False).decode().strip()
if out != "1234":
sys.stderr.write("# found wrong CPUWeight for the systemd scope\n")
return 1
for values in [(2, 1), (3, 2), (1024, 100), (260000, 9929), (262144, 10000)]:
cpu_shares = values[0]
# this is the expected cpu weight after the conversion from the CPUShares
expected_weight = str(values[1])
run_crun_command(['update', '--cpu-share', str(cpu_shares), cid])
out = run_crun_command(["exec", cid, "/init", "cat", "/sys/fs/cgroup/cpu.weight"])
if expected_weight not in out:
sys.stderr.write("found wrong CPUWeight %s instead of %s for the container cgroup\n" % (out, expected_weight))
return -1
out = subprocess.check_output(['systemctl', 'show','-PCPUWeight', scope ], close_fds=False).decode().strip()
# as above
if out != expected_weight:
out = subprocess.check_output(['systemctl', '--user', 'show','-PCPUWeight', scope ], close_fds=False).decode().strip()
if out != expected_weight:
sys.stderr.write("found wrong CPUWeight for the systemd scope\n")
return 1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
def test_resources_exec_cgroup():
if not is_cgroup_v2_unified() or is_rootless():
return 77
conf = base_config()
add_all_namespaces(conf, cgroupns=True)
conf['process']['args'] = ['/init', 'create-sub-cgroup-and-wait', 'foo']
cid = None
try:
out, cid = run_and_get_output(conf, command='run', detach=True)
# Give some time to pid 1 to move to the new cgroup
time.sleep(2)
out = run_crun_command(["exec", "--cgroup=/foo", cid, "/init", "cat", "/proc/self/cgroup"])
for i in out.split("\n"):
if i == "":
continue
if "/foo" not in i:
sys.stderr.write("# /foo not found in the output\n")
return -1
return 0
except Exception as e:
return -1
finally:
if cid is not None:
run_crun_command(["delete", "-f", cid])
return 0
all_tests = {
"resources-v2-swap-disabled": test_resources_cgroupv2_swap_0,
"resources-pid-limit" : test_resources_pid_limit,
"resources-pid-limit-userns" : test_resources_pid_limit_userns,
"resources-unified" : test_resources_unified,
"resources-unified-invalid-controller" : test_resources_unified_invalid_controller,
"resources-unified-invalid-key" : test_resources_unified_invalid_key,
"resources-unified-exec-cgroup" : test_resources_exec_cgroup,
"resources-fail-with-enoent" : test_resources_fail_with_enoent,
"resources-cpu-weight" : test_resources_cpu_weight,
"resources-cpu-weight-systemd" : test_resources_cpu_weight_systemd,
"resources-cpu-quota-minus-one" : test_resources_cpu_quota_minus_one,
}
if __name__ == "__main__":
tests_main(all_tests)
|
