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Ignore modprobe failures in ExecStartPre (systemd unit)
When running containerd inside LXC, due to systemd being unable to execute `modprobe overlay` inside the container (module is already loaded in host kernel). This patch adds a `-` prefix to the `ExecStartPre` command, so that failures are ignored, and the service can start as usual. Signed-off-by: Sebastiaan van Stijn <github@gone.nl> (cherry picked from commit 555ea3f) Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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‎containerd.service‎

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@@ -4,7 +4,7 @@ Documentation=https://containerd.io
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After=network.target
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[Service]
7-
ExecStartPre=/sbin/modprobe overlay
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ExecStartPre=-/sbin/modprobe overlay
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ExecStart=/usr/local/bin/containerd
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Delegate=yes
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KillMode=process

‎docs/ops.md‎

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@@ -49,7 +49,7 @@ Documentation=https://containerd.io
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After=network.target
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[Service]
52-
ExecStartPre=/sbin/modprobe overlay
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ExecStartPre=-/sbin/modprobe overlay
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ExecStart=/usr/local/bin/containerd
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Delegate=yes
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KillMode=process

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