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Message #92088
[Bug 1818197] Re: ubuntu-18.04-server-cloudimg-arm64.img often fails to set the cloud-localds password under QEMU
Tracked in Github Issues as https://github.com/canonical/cloud-
init/issues/3343
** Bug watch added: github.com/canonical/cloud-init/issues #3343
https://github.com/canonical/cloud-init/issues/3343
** Changed in: cloud-init
Status: Incomplete => Expired
--
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https://bugs.launchpad.net/bugs/1818197
Title:
ubuntu-18.04-server-cloudimg-arm64.img often fails to set the cloud-
localds password under QEMU
Status in cloud-images:
New
Status in cloud-init:
Expired
Bug description:
On an Ubuntu 18.10 host, QEMU 2.12.0, I try to run the cloudimage with
the script shown at the end of this description.
Result: many times, I end up on the user / password prompt, but the
password I chose with cloud-localds was not set.
It is not deterministic, but it happens very often. Sometimes password
worked. And very rarely, it shows a stack trace on the terminal, but
most times just fails silently.
The test script:
```
set -eux
# Parameters.
id=ubuntu-18.04-server-cloudimg-arm64
img="${id}.img"
img_snapshot="${id}.img.snapshot.qcow2"
flash0="${id}-flash0.img"
flash1="${id}-flash1.img"
user_data="${id}-user-data"
user_data_img="${user_data}.img"
# Install dependencies.
pkgs='cloud-image-utils qemu-system-arm qemu-efi'
if ! dpkg -s $pkgs >/dev/null 2>&1; then
sudo apt-get install $pkgs
fi
# Get the image.
if [ ! -f "$img" ]; then
wget "https://cloud-images.ubuntu.com/releases/18.04/release/${img}";
fi
# Create snapshot.
if [ ! -f "$img_snapshot" ]; then
qemu-img \
create \
-b "$img" \
-f qcow2 \
"$img_snapshot" \
1T \
;
fi
# Set the password.
if [ ! -f "$user_data" ]; then
cat >"$user_data" <<EOF
#cloud-config
password: asdfqwer
chpasswd: { expire: False }
ssh_pwauth: True
EOF
cloud-localds "$user_data_img" "$user_data"
fi
# Firmware.
if [ ! -f "$flash0" ]; then
dd if=/dev/zero of="$flash0" bs=1M count=64
dd if=/usr/share/qemu-efi/QEMU_EFI.fd of="$flash0" conv=notrunc
fi
if [ ! -f "$flash1" ]; then
dd if=/dev/zero of="$flash1" bs=1M count=64
fi
# Run.
qemu-system-aarch64 \
-machine virt \
-cpu cortex-a57 \
-device rtl8139,netdev=net0 \
-device virtio-blk-device,drive=hd0 \
-drive "if=none,file=${img_snapshot},id=hd0" \
-drive "file=${user_data_img},format=raw" \
-m 2G \
-netdev user,id=net0 \
-nographic \
-pflash "$flash0" \
-pflash "$flash1" \
-smp 2 \
"$@" \
;
```
A stack trace that I saw once (rare):
```
# [ 113.002366] cloud-init[528]: Cloud-init v. 18.4-0ubuntu1~18.04.1 running 'init' at Thu, 17 Jan 2019 00:22:16 +0000. Up 105.40 seconds.
# [ 113.020759] cloud-init[528]: ci-info: +++++++++++++++++++++++++++Net device info++++++++++++++++++++++++++++
# [ 113.031208] cloud-init[528]: ci-info: +--------+-------+-----------+-----------+-------+-------------------+
# [ 113.041449] cloud-init[528]: ci-info: | Device | Up | Address | Mask | Scope | Hw-Address |
# [ 113.051615] cloud-init[528]: ci-info: +--------+-------+-----------+-----------+-------+-------------------+
# [ 113.061778] cloud-init[528]: ci-info: | enp0s1 | False | . | . | . | 52:54:00:12:34:56 |
# [ 113.071307] cloud-init[528]: ci-info: | lo | True | 127.0.0.1 | 255.0.0.0 | host | . |
# [ 113.088462] cloud-init[528]: ci-info: | lo | True | ::1/128 | . | host | . |
# [ 113.097037] cloud-init[528]: ci-info: +--------+-------+-----------+-----------+-------+-------------------+
# [ 113.100513] cloud-init[528]: ci-info: +++++++++++++++++++Route IPv6 info+++++++++++++++++++
# [ 113.103872] cloud-init[528]: ci-info: +-------+-------------+---------+-----------+-------+
# [ 113.107605] cloud-init[528]: ci-info: | Route | Destination | Gateway | Interface | Flags |
# [ 113.111566] cloud-init[528]: ci-info: +-------+-------------+---------+-----------+-------+
# [ 113.115000] cloud-init[528]: ci-info: +-------+-------------+---------+-----------+-------+
# [ 113.118441] cloud-init[528]: 2019-01-17 00:22:23,983 - util.py[WARNING]: failed stage init
# [ 113.238277] cloud-init[528]: failed run of stage init
# [ 113.252444] cloud-init[528]: ------------------------------------------------------------
# [ 113.255576] cloud-init[528]: Traceback (most recent call last):
# [ 113.268398] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 658, in status_wrapper
# [ 113.272674] cloud-init[528]: ret = functor(name, args)
# [ 113.285055] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 362, in main_init
# [ 113.288945] cloud-init[528]: init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL))
# [ 113.293122] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/stages.py", line 671, in apply_network_config
# [ 113.304953] cloud-init[528]: return self.distro.apply_network_config(netcfg, bring_up=bring_up)
# [ 113.309150] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/distros/__init__.py", line 178, in apply_network_config
# [ 113.322181] cloud-init[528]: dev_names = self._write_network_config(netconfig)
# [ 113.327226] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/distros/debian.py", line 114, in _write_network_config
# [ 113.341030] cloud-init[528]: return self._supported_write_network_config(netconfig)
# [ 113.353698] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/distros/__init__.py", line 93, in _supported_write_network_config
# [ 113.358591] cloud-init[528]: renderer.render_network_config(network_config)
# [ 113.376713] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/net/renderer.py", line 56, in render_network_config
# [ 113.381516] cloud-init[528]: templates=templates, target=target)
# [ 113.385465] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/net/netplan.py", line 210, in render_network_state
# [ 113.389682] cloud-init[528]: self._netplan_generate(run=self._postcmds)
# [ 113.393637] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/net/netplan.py", line 217, in _netplan_generate
# [ 113.397718] cloud-init[528]: util.subp(self.NETPLAN_GENERATE, capture=True)
# [ 113.401648] cloud-init[528]: File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2067, in subp
# [ 113.405796] cloud-init[528]: cmd=args)
# [ 113.411233] cloud-init[528]: cloudinit.util.ProcessExecutionError: Unexpected error while running command.
# [ 113.416694] cloud-init[528]: Command: ['netplan', 'generate']
# [ 113.420785] cloud-init[528]: Exit code: -11
# [ 113.424647] cloud-init[528]: Reason: -
# [ 113.428686] cloud-init[528]: Stdout:
# [ 113.431914] cloud-init[528]: Stderr:
# [ 113.435345] cloud-init[528]: ------------------------------------------------------------
```
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