Public bug reported:
Devstack master, ML2/OVS, CentOS 7, Python 3.6.
No DHCP servers running. Instances fail to get a DHCP offer.
$ ps aux | egrep "dhcp|dnsmasq"
vagrant 591 4.7 0.7 459196 114056 ? Ss 07:26 0:33
/usr/bin/python3.6 /usr/local/bin/neutron-dhcp-agent --config-file
/etc/neutron/neutron.conf --config-file /etc/neutron/dhcp_agent.ini
root 1057 0.0 0.0 102896 5472 ? S 06:14 0:00 /sbin/dhclient
-d -q -sf /usr/libexec/nm-dhcp-helper -pf /var/run/dhclient-eth0.pid -lf
/var/lib/NetworkManager/dhclient-5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03-eth0.lease
-cf /var/lib/NetworkManager/dhclient-eth0.conf eth0
root 1219 14.9 0.4 684168 77988 ? Sl 07:26 1:43
/usr/bin/python3.6 /usr/local/bin/privsep-helper --config-file
/etc/neutron/neutron.conf --config-file /etc/neutron/dhcp_agent.ini
--privsep_context neutron.privileged.default --privsep_sock_path
/tmp/tmpxg0wq6j2/privsep.sock
root 14783 0.0 0.0 102896 2632 ? Ss 07:29 0:00 dhclient -v
o-hm0 -cf /etc/dhcp/octavia/dhclient.conf
vagrant 18136 0.0 0.0 112716 988 pts/2 S+ 07:37 0:00 grep -E
--color=auto dhcp|dnsmasq
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Building initial lease file:
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/leases
{{(pid=591) _output_init_lease_file
/opt/stack/neutron/neutron/agent/linux/dhcp.py:681}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Done building initial lease file
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/leases with
contents:
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: 1581752053
fa:16:3e:31:b7:ea 192.168.233.2 * *
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: {{(pid=591)
_output_init_lease_file /opt/stack/neutron/neutron/agent/linux/dhcp.py:708}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Building host file:
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/host
{{(pid=591) _output_hosts_file
/opt/stack/neutron/neutron/agent/linux/dhcp.py:739}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Done building host file
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/host
{{(pid=591) _output_hosts_file
/opt/stack/neutron/neutron/agent/linux/dhcp.py:780}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Unable to access
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/pid; Error:
[Errno 2] No such file or directory:
'/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/pid'
{{(pid=591) get_value_from_file
/opt/stack/neutron/neutron/agent/linux/utils.py:262}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Running command (rootwrap daemon): ['ip', 'netns', 'exec',
'qdhcp-06d0ae0b-d730-4871-bef3-fa52e8638214', 'dnsmasq', '--no-hosts', '',
'--pid-file=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/pid',
'--dhcp-hostsfile=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/host',
'--addn-hosts=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/addn_hosts',
'--dhcp-optsfile=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/opts',
'--dhcp-leasefile=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/leases',
'--dhcp-match=set:ipxe,175', '--dhcp-userclass=set:ipxe6,iPXE',
'--local-service', '--bind-dynamic',
'--dhcp-range=set:subnet-879783df-943d-486d-8447-8730b9f3051a,192.168.233.0,static,255.255.255.0,86400s',
'--dhcp-option-force=option:mtu,1450', '--dhcp-lease-max=256', '--conf-file=',
'--domain=openstacklocal'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: ERROR
neutron.agent.linux.utils [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Exit code: 2; Stdin: ; Stdout: ; Stderr: /bin/ncat: unrecognized option
'--no-hosts'
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: Ncat: Try
`--help' or man(1) ncat for more information, usage options and help. QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]:
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Spawning DHCP process for network 06d0ae0b-d730-4871-bef3-fa52e8638214
failed; Error: Exit code: 2; Stdin: ; Stdout: ; Stderr: /bin/ncat: unrecognized
option '--no-hosts'
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: Ncat: Try
`--help' or man(1) ncat for more information, usage options and help. QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: {{(pid=591)
_enable /opt/stack/neutron/neutron/agent/linux/dhcp.py:274}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Unable to access
/opt/stack/data/neutron/dhcp/eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f/pid; Error:
[Errno 2] No such file or directory:
'/opt/stack/data/neutron/dhcp/eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f/pid'
{{(pid=591) get_value_from_file
/opt/stack/neutron/neutron/agent/linux/utils.py:262}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4,
['qdhcp-06d0ae0b-d730-4871-bef3-fa52e8638214',
'qdhcp-70e0b5b4-92c6-4dfc-8d5d-81e908170bdd',
'qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f']) {{(pid=1219) _call_back
/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Running command (rootwrap daemon): ['ip', 'netns', 'exec',
'qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f', 'sysctl', '-w',
'net.ipv4.ip_nonlocal_bind=1'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: WARNING
neutron.agent.linux.ip_lib [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Setting ['sysctl', '-w', 'net.ipv4.ip_nonlocal_bind=1'] in namespace
qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f failed: Exit code: 2; Stdin: ;
Stdout: ; Stderr: Ncat: Invalid -w timeout (must be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: .:
neutron_lib.exceptions.ProcessExecutionError: Exit code: 2; Stdin: ; Stdout: ;
Stderr: Ncat: Invalid -w timeout (must be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.ip_lib [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Namespace (qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f) does not support
setting net.ipv4.ip_nonlocal_bind, trying in root namespace {{(pid=591)
set_ip_nonlocal_bind_for_namespace
/opt/stack/neutron/neutron/agent/linux/ip_lib.py:1136}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Running command (rootwrap daemon): ['sysctl', '-w',
'net.ipv4.ip_nonlocal_bind=1'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Running command (rootwrap daemon): ['ip', 'netns', 'exec',
'qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f', 'sysctl', '-w',
'net.ipv6.conf.default.accept_ra=0'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: ERROR
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Exit code: 2; Stdin: ; Stdout: ; Stderr: Ncat: Invalid -w timeout (must
be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]:
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: WARNING
neutron.agent.linux.ip_lib [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Setting ['sysctl', '-w', 'net.ipv6.conf.default.accept_ra=0'] in
namespace qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f failed: Exit code: 2;
Stdin: ; Stdout: ; Stderr: Ncat: Invalid -w timeout (must be greater than 0).
QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: .:
neutron_lib.exceptions.ProcessExecutionError: Exit code: 2; Stdin: ; Stdout: ;
Stderr: Ncat: Invalid -w timeout (must be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4, True) {{(pid=1219)
_call_back /usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4, {'mtu': 1450,
'qlen': 1000, 'state': 'UNKNOWN', 'qdisc': 'noqueue', 'brd':
'ff:ff:ff:ff:ff:ff', 'link/ether': 'fa:16:3e:a0:0b:a3', 'alias': None,
'allmulticast': False, 'link_kind': 'openvswitch'}) {{(pid=1219) _call_back
/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4, ({'header':
{'length': 36, 'type': 2, 'flags': 0, 'sequence_number': 255, 'pid': 9337,
'error': None, 'stats': Stats(qsize=0, delta=0, delay=0)}, 'event':
'NLMSG_ERROR'},)) {{(pid=1219) _call_back
/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Reusing existing device: tap5337fbe0-46. {{(pid=591) setup
/opt/stack/neutron/neutron/agent/linux/dhcp.py:1586}}
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1863213
Title:
Spawning of DHCP processes fail: invalid netcat options
Status in neutron:
New
Bug description:
Devstack master, ML2/OVS, CentOS 7, Python 3.6.
No DHCP servers running. Instances fail to get a DHCP offer.
$ ps aux | egrep "dhcp|dnsmasq"
vagrant 591 4.7 0.7 459196 114056 ? Ss 07:26 0:33
/usr/bin/python3.6 /usr/local/bin/neutron-dhcp-agent --config-file
/etc/neutron/neutron.conf --config-file /etc/neutron/dhcp_agent.ini
root 1057 0.0 0.0 102896 5472 ? S 06:14 0:00
/sbin/dhclient -d -q -sf /usr/libexec/nm-dhcp-helper -pf
/var/run/dhclient-eth0.pid -lf
/var/lib/NetworkManager/dhclient-5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03-eth0.lease
-cf /var/lib/NetworkManager/dhclient-eth0.conf eth0
root 1219 14.9 0.4 684168 77988 ? Sl 07:26 1:43
/usr/bin/python3.6 /usr/local/bin/privsep-helper --config-file
/etc/neutron/neutron.conf --config-file /etc/neutron/dhcp_agent.ini
--privsep_context neutron.privileged.default --privsep_sock_path
/tmp/tmpxg0wq6j2/privsep.sock
root 14783 0.0 0.0 102896 2632 ? Ss 07:29 0:00 dhclient -v
o-hm0 -cf /etc/dhcp/octavia/dhclient.conf
vagrant 18136 0.0 0.0 112716 988 pts/2 S+ 07:37 0:00 grep -E
--color=auto dhcp|dnsmasq
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Building initial lease file:
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/leases
{{(pid=591) _output_init_lease_file
/opt/stack/neutron/neutron/agent/linux/dhcp.py:681}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Done building initial lease file
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/leases with
contents:
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: 1581752053
fa:16:3e:31:b7:ea 192.168.233.2 * *
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: {{(pid=591)
_output_init_lease_file /opt/stack/neutron/neutron/agent/linux/dhcp.py:708}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Building host file:
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/host
{{(pid=591) _output_hosts_file
/opt/stack/neutron/neutron/agent/linux/dhcp.py:739}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Done building host file
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/host
{{(pid=591) _output_hosts_file
/opt/stack/neutron/neutron/agent/linux/dhcp.py:780}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Unable to access
/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/pid; Error:
[Errno 2] No such file or directory:
'/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/pid'
{{(pid=591) get_value_from_file
/opt/stack/neutron/neutron/agent/linux/utils.py:262}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Running command (rootwrap daemon): ['ip', 'netns', 'exec',
'qdhcp-06d0ae0b-d730-4871-bef3-fa52e8638214', 'dnsmasq', '--no-hosts', '',
'--pid-file=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/pid',
'--dhcp-hostsfile=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/host',
'--addn-hosts=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/addn_hosts',
'--dhcp-optsfile=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/opts',
'--dhcp-leasefile=/opt/stack/data/neutron/dhcp/06d0ae0b-d730-4871-bef3-fa52e8638214/leases',
'--dhcp-match=set:ipxe,175', '--dhcp-userclass=set:ipxe6,iPXE',
'--local-service', '--bind-dynamic',
'--dhcp-range=set:subnet-879783df-943d-486d-8447-8730b9f3051a,192.168.233.0,static,255.255.255.0,86400s',
'--dhcp-option-force=option:mtu,1450', '--dhcp-lease-max=256', '--conf-file=',
'--domain=openstacklocal'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: ERROR
neutron.agent.linux.utils [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Exit code: 2; Stdin: ; Stdout: ; Stderr: /bin/ncat: unrecognized option
'--no-hosts'
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: Ncat: Try
`--help' or man(1) ncat for more information, usage options and help. QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]:
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-4193fed2-5a2d-4c24-b3b1-72673dc2e1fe None
None] Spawning DHCP process for network 06d0ae0b-d730-4871-bef3-fa52e8638214
failed; Error: Exit code: 2; Stdin: ; Stdout: ; Stderr: /bin/ncat: unrecognized
option '--no-hosts'
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: Ncat: Try
`--help' or man(1) ncat for more information, usage options and help. QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: {{(pid=591)
_enable /opt/stack/neutron/neutron/agent/linux/dhcp.py:274}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Unable to access
/opt/stack/data/neutron/dhcp/eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f/pid; Error:
[Errno 2] No such file or directory:
'/opt/stack/data/neutron/dhcp/eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f/pid'
{{(pid=591) get_value_from_file
/opt/stack/neutron/neutron/agent/linux/utils.py:262}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4,
['qdhcp-06d0ae0b-d730-4871-bef3-fa52e8638214',
'qdhcp-70e0b5b4-92c6-4dfc-8d5d-81e908170bdd',
'qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f']) {{(pid=1219) _call_back
/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Running command (rootwrap daemon): ['ip', 'netns', 'exec',
'qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f', 'sysctl', '-w',
'net.ipv4.ip_nonlocal_bind=1'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: WARNING
neutron.agent.linux.ip_lib [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Setting ['sysctl', '-w', 'net.ipv4.ip_nonlocal_bind=1'] in namespace
qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f failed: Exit code: 2; Stdin: ;
Stdout: ; Stderr: Ncat: Invalid -w timeout (must be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: .:
neutron_lib.exceptions.ProcessExecutionError: Exit code: 2; Stdin: ; Stdout: ;
Stderr: Ncat: Invalid -w timeout (must be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.ip_lib [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Namespace (qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f) does not support
setting net.ipv4.ip_nonlocal_bind, trying in root namespace {{(pid=591)
set_ip_nonlocal_bind_for_namespace
/opt/stack/neutron/neutron/agent/linux/ip_lib.py:1136}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Running command (rootwrap daemon): ['sysctl', '-w',
'net.ipv4.ip_nonlocal_bind=1'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Running command (rootwrap daemon): ['ip', 'netns', 'exec',
'qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f', 'sysctl', '-w',
'net.ipv6.conf.default.accept_ra=0'] {{(pid=591) execute_rootwrap_daemon
/opt/stack/neutron/neutron/agent/linux/utils.py:103}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: ERROR
neutron.agent.linux.utils [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Exit code: 2; Stdin: ; Stdout: ; Stderr: Ncat: Invalid -w timeout (must
be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]:
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: WARNING
neutron.agent.linux.ip_lib [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Setting ['sysctl', '-w', 'net.ipv6.conf.default.accept_ra=0'] in
namespace qdhcp-eb8e5a83-ca01-4cb0-82ec-d1d4ecc14e9f failed: Exit code: 2;
Stdin: ; Stdout: ; Stderr: Ncat: Invalid -w timeout (must be greater than 0).
QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: .:
neutron_lib.exceptions.ProcessExecutionError: Exit code: 2; Stdin: ; Stdout: ;
Stderr: Ncat: Invalid -w timeout (must be greater than 0). QUITTING.
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4, True) {{(pid=1219)
_call_back /usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4, {'mtu': 1450,
'qlen': 1000, 'state': 'UNKNOWN', 'qdisc': 'noqueue', 'brd':
'ff:ff:ff:ff:ff:ff', 'link/ether': 'fa:16:3e:a0:0b:a3', 'alias': None,
'allmulticast': False, 'link_kind': 'openvswitch'}) {{(pid=1219) _call_back
/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
oslo.privsep.daemon [-] privsep: reply[140123534145688]: (4, ({'header':
{'length': 36, 'type': 2, 'flags': 0, 'sequence_number': 255, 'pid': 9337,
'error': None, 'stats': Stats(qsize=0, delta=0, delay=0)}, 'event':
'NLMSG_ERROR'},)) {{(pid=1219) _call_back
/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:475}}
Feb 14 07:34:13 localhost.localdomain neutron-dhcp-agent[591]: DEBUG
neutron.agent.linux.dhcp [None req-24ab0d08-e2ab-4216-b3ce-cac571f5779e None
None] Reusing existing device: tap5337fbe0-46. {{(pid=591) setup
/opt/stack/neutron/neutron/agent/linux/dhcp.py:1586}}
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