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<p>Is the cloud running on a single server? How did you deploy it?</p>
<p>Your description indicates that instances are unable to reach
their DHCP servers. They don't get an IP address and consequently
can't be ping'ed.<br>
</p>
<p>Start with <font face="monospace">openstack network agent list</font>
to see if there is an obvious problem with the DHCP agent(s). Also
check if <i>dnsmasq</i> processes (which normally implement the
DHCP service) are running; there should be one per Neutron
network. Also check the relevant log files and the <i>dnsmasq </i>configuration
and lease files.</p>
<p>If there is no problem at that level, I would guess network
connectivity between instances and DHCP servers is broken. That is
harder to troubleshoot, as there are many moving parts and many
implementation options.<br>
</p>
<div class="moz-cite-prefix">On 2022/10/21 5:51 AM, Albert Shih
wrote:<br>
</div>
<blockquote type="cite" cite="mid:Y1G06jSYqr5qEo4k@io.chezmoi.fr">
<pre class="moz-quote-pre" wrap="">Hi,
I've a small openstack installation running Victoria on Ubuntu 20 LTS.
After a update (not upgrade) of Ubuntu, I loose all network on all my
instance.
On a instance console I got :
[[0;32m OK [0m] Started [0;1;39mifup for ens3[0m.
Starting [0;1;39mRaise network interfaces[0m...
[[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 4s / 6min 2s)
M[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 4s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 5s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 5s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m*[0m] A start job is running for Raise ne���ork interfaces (1min 6s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m] A start job is running for Raise ne���ork interfaces (1min 6s / 6min 2s)
M[K[ [0;31m*[0m] A start job is running for Raise ne���ork interfaces (1min 7s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m] A start job is running for Raise ne���ork interfaces (1min 7s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m*[0m] A start job is running for Raise ne���ork interfaces (1min 8s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 8s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 9s / 6min 2s)
M[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (1min 9s / 6min 2s)
M[K[[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���rk interfaces (1min 10s / 6min 2s)
M[K[[0m[0;31m* [0m] A start job is running for Raise ne���rk interfaces (1min 10s / 6min 2s)
M[K[[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���rk interfaces (1min 11s / 6min 2s)
M[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���rk interfaces (1min 11s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���rk interfaces (1min 12s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���rk interfaces (1min 12s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m*[0m] A start job is running for Raise ne���rk interfaces (1min 13s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m] A start job is running for Raise ne���rk interfaces (1min 13s / 6min 2s)
M[K[ [0;31m*[0m] A start job is running for Raise ne���rk interfaces (1min 14s / 6min 2s)
......
......
M[K[ [0;31m*[0;1;31m*[0m] A start job is running for Raise ne���rk interfaces (2min 59s / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m*[0m] A start job is running for Raise network interfaces (3min / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise network interfaces (3min / 6min 2s)
M[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (3min 1s / 6min 2s)
M[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (3min 1s / 6min 2s)
M[K[[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (3min 2s / 6min 2s)
M[K[[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (3min 2s / 6min 2s)
M[K[[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (3min 3s / 6min 2s)
M[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for Raise ne���ork interfaces (3min 3s / 6min 2s)
M[K[[0;32m OK [0m] Finished [0;1;39mRaise network interfaces[0m.
[K[[0;32m OK [0m] Reached target [0;1;39mNetwork[0m.
Starting [0;1;39mInitial cloud-ini��� (metadata service crawler)[0m...
[ 186.709234] cloud-init[514]: Cloud-init v. 20.4.1 running 'init' at Thu, 20 Oct 2022 20:12:41 +0000. Up 186.69 seconds.
[ 186.727021] cloud-init[514]: ci-info: ++++++++++++++++++++++++++++++++++++Net device info+++++++++++++++++++++++++++++++++++++
[ 186.728928] cloud-init[514]: ci-info: +--------+------+------------------------------+-----------+-------+-------------------+
[ 186.730709] cloud-init[514]: ci-info: | Device | Up | Address | Mask | Scope | Hw-Address |
[ 186.732694] cloud-init[514]: ci-info: +--------+------+------------------------------+-----------+-------+-------------------+
[ 186.734765] cloud-init[514]: ci-info: | ens3 | True | fe80::f816:3eff:fec3:2e6c/64 | . | link | fa:16:3e:c3:2e:6c |
[ 186.736681] cloud-init[514]: ci-info: | lo | True | 127.0.0.1 | 255.0.0.0 | host | . |
[ 186.738473] cloud-init[514]: ci-info: | lo | True | ::1/128 | . | host | . |
[ 186.740246] cloud-init[514]: ci-info: +--------+------+------------------------------+-----------+-------+-------------------+
[ 186.741723] cloud-init[514]: ci-info: +++++++++++++++++++Route IPv6 info+++++++++++++++++++
[ 186.742306] cloud-init[514]: ci-info: +-------+-------------+---------+-----------+-------+
[ 186.742881] cloud-init[514]: ci-info: | Route | Destination | Gateway | Interface | Flags |
[ 186.743460] cloud-init[514]: ci-info: +-------+-------------+---------+-----------+-------+
[ 186.744075] cloud-init[514]: ci-info: | 1 | fe80::/64 | :: | ens3 | U |
[ 186.744681] cloud-init[514]: ci-info: | 3 | local | :: | ens3 | U |
[ 186.745255] cloud-init[514]: ci-info: | 4 | multicast | :: | ens3 | U |
[ 186.745833] cloud-init[514]: ci-info: +-------+-------------+---------+-----------+-------+
in the log of neutron-linuxbridge-agent.log it seem everything should work :
2022-10-20 20:17:54.967 59611 INFO neutron.plugins.ml2.drivers.agent._common_agent [req-9e6b23d3-1e0e-4c48-8f0e-30d761233188 - - - - -] Port tap4f68bcf1-4d updated. Details: {'device': 'tap4f68bcf1-4d', 'network_id': '9223f9ff-7ab0-4268-9b7f-3b5966625c65', 'port_id': '4f68bcf1-4d32-4ad3-a0df-0415f7170c5d', 'mac_address': 'fa:16:3e:c3:2e:6c', 'admin_state_up': True, 'network_type': 'flat', 'segmentation_id': None, 'physical_network': 'provider', 'mtu': 1500, 'fixed_ips': [{'subnet_id': '12cdcc06-bbf0-48f2-b303-bdfab460c696', 'ip_address': '145.238.137.52'}], 'device_owner': 'compute:nova', 'allowed_address_pairs': [], 'port_security_enabled': True, 'qos_policy_id': None, 'network_qos_policy_id': None, 'profile': {}, 'propagate_uplink_status': False}
But I'm unable to ping any instance.
Any idea ?
Regards
</pre>
</blockquote>
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