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From 4ab5a61c0f8378889d2a6b78710f49b0fb71d3c9 Mon Sep 17 00:00:00 2001
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From: Miroslav Rezanina <mrezanin@redhat.com>
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Date: Fri, 22 Nov 2019 07:46:38 +0100
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Subject: [PATCH 1/2] Fix for network configuration not persisting after reboot
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RH-Author: Eduardo Otubo <otubo@redhat.com>
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Message-id: <20190906121211.23172-1-otubo@redhat.com>
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Patchwork-id: 90300
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O-Subject: [RHEL-7.8/RHEL-8.1.0 cloud-init PATCH] Fix for network configuration not persisting after reboot
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Bugzilla: 1706482
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RH-Acked-by: Mohammed Gamal <mgamal@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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The reasons the configuration does not persist after reboot includes
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different aspects and they're all fixed on this patch:
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1) The rpm package doesn't include the systemd-generator and
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ds-identify. The systemd-generator is called early in the boot process
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that calls ds-identify to check if there's any Data Source available in
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the current boot. In the current use case, the Data Source is removed
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from the VM on the second boot, this means cloud-init should disable
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itself in order to keep the configuration it did in the first boot.
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2) Even after adding those scripts, cloud-init was still being
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executed and the configurations were being lost. The reason for this is
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that the cloud-init systemd units had a wrong dependency
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WantedBy: multi-user.target
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Which would start them every time no matter the return of
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ds-identify. The fix is to replace the dependency by the systemd unit to
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cloud-init.target, which is the main cloud-init target enabled - or in
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this case, disabled by ds-identify. The file cloud-init.target was also
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missing on rpm package.
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After adding both scripts, the main cloud-init systemd target and
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adjusting the systemd dependencies the configuration persists after
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reboots and shutdowns.
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Signed-off-by: Eduardo Otubo <otubo@redhat.com>
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---
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redhat/cloud-init.spec.template | 15 +++++++++++++++
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rhel/systemd/cloud-config.service | 2 +-
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rhel/systemd/cloud-final.service | 2 +-
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rhel/systemd/cloud-init-local.service | 2 +-
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rhel/systemd/cloud-init.service | 2 +-
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rhel/systemd/cloud-init.target | 7 +++++++
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6 files changed, 26 insertions(+), 4 deletions(-)
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create mode 100644 rhel/systemd/cloud-init.target
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diff --git a/rhel/systemd/cloud-config.service b/rhel/systemd/cloud-config.service
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index 12ca9df..f3dcd4b 100644
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--- a/rhel/systemd/cloud-config.service
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+++ b/rhel/systemd/cloud-config.service
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@@ -15,4 +15,4 @@ TimeoutSec=0
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StandardOutput=journal+console
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[Install]
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-WantedBy=multi-user.target
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+WantedBy=cloud-init.target
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diff --git a/rhel/systemd/cloud-final.service b/rhel/systemd/cloud-final.service
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index 32a83d8..739b7e3 100644
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--- a/rhel/systemd/cloud-final.service
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+++ b/rhel/systemd/cloud-final.service
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@@ -16,4 +16,4 @@ KillMode=process
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StandardOutput=journal+console
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[Install]
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-WantedBy=multi-user.target
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+WantedBy=cloud-init.target
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diff --git a/rhel/systemd/cloud-init-local.service b/rhel/systemd/cloud-init-local.service
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index 656eddb..8f9f6c9 100644
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--- a/rhel/systemd/cloud-init-local.service
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+++ b/rhel/systemd/cloud-init-local.service
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@@ -28,4 +28,4 @@ TimeoutSec=0
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StandardOutput=journal+console
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[Install]
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-WantedBy=multi-user.target
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+WantedBy=cloud-init.target
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diff --git a/rhel/systemd/cloud-init.service b/rhel/systemd/cloud-init.service
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index 68fc5f1..d0023a0 100644
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--- a/rhel/systemd/cloud-init.service
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+++ b/rhel/systemd/cloud-init.service
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@@ -22,4 +22,4 @@ TimeoutSec=0
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StandardOutput=journal+console
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[Install]
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-WantedBy=multi-user.target
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+WantedBy=cloud-init.target
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diff --git a/rhel/systemd/cloud-init.target b/rhel/systemd/cloud-init.target
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new file mode 100644
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index 0000000..083c3b6
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--- /dev/null
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+++ b/rhel/systemd/cloud-init.target
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@@ -0,0 +1,7 @@
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+# cloud-init target is enabled by cloud-init-generator
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+# To disable it you can either:
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+# a.) boot with kernel cmdline of 'cloud-init=disabled'
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+# b.) touch a file /etc/cloud/cloud-init.disabled
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+[Unit]
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+Description=Cloud-init target
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+After=multi-user.target
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--
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1.8.3.1
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