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Set hostname for EC2 and OpenStack from metadata #21

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Feb 18, 2021
Merged

Set hostname for EC2 and OpenStack from metadata #21

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13 changes: 13 additions & 0 deletions dracut/30ignition/flatcar-metadata-hostname.service
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
[Unit]
Description=Flatcar Metadata Hostname Agent
DefaultDependencies=false
Before=initrd.target
After=systemd-networkd.service initrd-root-fs.target
Wants=systemd-networkd.service initrd-root-fs.target

# Ensure Ignition can overwrite /etc/hostname
Before=ignition-files.service

[Service]
Type=oneshot
ExecStart=/usr/bin/coreos-metadata --cmdline --hostname=/sysroot/etc/hostname
14 changes: 14 additions & 0 deletions dracut/30ignition/flatcar-openstack-hostname.service
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Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
[Unit]
Description=Flatcar OpenStack Metadata Hostname Agent
DefaultDependencies=false
Before=initrd.target
After=systemd-networkd.service initrd-root-fs.target
Wants=systemd-networkd.service initrd-root-fs.target

# Ensure Ignition can overwrite /etc/hostname
Before=ignition-files.service

[Service]
Type=oneshot
# Special case: the oem_id openstack does not match the afterburn name openstack-metadata
ExecStart=/usr/bin/coreos-metadata --provider openstack-metadata --hostname=/sysroot/etc/hostname
6 changes: 6 additions & 0 deletions dracut/30ignition/ignition-generator
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Expand Up @@ -57,6 +57,12 @@ Conflicts=emergency.service
Conflicts=dracut-emergency.service
EOF
fi
if [[ $(cmdline_arg flatcar.oem.id) == "ec2" ]] || [[ $(cmdline_arg coreos.oem.id) == "ec2" ]]; then
add_requires flatcar-metadata-hostname.service
fi
if [[ $(cmdline_arg flatcar.oem.id) == "openstack" ]] || [[ $(cmdline_arg coreos.oem.id) == "openstack" ]]; then
add_requires flatcar-openstack-hostname.service
fi
fi

# Write ignition-setup.service customized for PXE/ISO or regular boot
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6 changes: 6 additions & 0 deletions dracut/30ignition/module-setup.sh
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Expand Up @@ -52,6 +52,12 @@ install() {
inst_simple "$moddir/flatcar-static-network.service" \
"$systemdsystemunitdir/flatcar-static-network.service"

inst_simple "$moddir/flatcar-metadata-hostname.service" \
"$systemdsystemunitdir/flatcar-metadata-hostname.service"

inst_simple "$moddir/flatcar-openstack-hostname.service" \
"$systemdsystemunitdir/flatcar-openstack-hostname.service"

inst_rules \
60-cdrom_id.rules \
66-azure-storage.rules \
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