59 lines
2.1 KiB
Django/Jinja
59 lines
2.1 KiB
Django/Jinja
#!/bin/bash
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# {{ ansible_managed }}
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# Daily Kopia backup of {{ kopia_backup.hostname }} into the bucket {{ kopia_backup.bucket }} on {{ kopia_backup.endpoint }}.
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set -uo pipefail
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export KOPIA_CHECK_FOR_UPDATES=false
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failed=0
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sources=()
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{% if kopia_backup.pre_command %}
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{{ kopia_backup.pre_command }} || { echo "pre_command failed" >&2; failed=1; }
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{% endif %}
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{% if kopia_backup.etcd_snapshot %}
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# Only the latest etcd snapshot; the live etcd dir is not consistent on disk and older snapshots only add churn
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etcd=/var/backups/etcd
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latest=$(ls -t /var/lib/rancher/k3s/server/db/snapshots/etcd-snapshot-* 2>/dev/null | head -1)
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if [ -n "$latest" ]; then
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install -d -m700 "$etcd"
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rm -f "$etcd/etcd-snapshot"
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ln "$latest" "$etcd/etcd-snapshot" 2>/dev/null || cp -p "$latest" "$etcd/etcd-snapshot" || failed=1
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fi
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{% endif %}
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{% if kopia_backup.dumps %}
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dumps=/var/backups/dumps
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install -d -m700 "$dumps"
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dump() { # file, container, command run inside the container
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if docker exec "$2" sh -c "$3" > "$dumps/$1.tmp"; then
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mv "$dumps/$1.tmp" "$dumps/$1"
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else
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echo "dump of $1 failed" >&2; rm -f "$dumps/$1.tmp"; failed=1
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fi
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}
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{% for d in kopia_backup.dumps %}
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dump {{ d.file | quote }} {{ d.container | quote }} {{ d.command | quote }}
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{% endfor %}
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{% endif %}
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{% set ignores = kopia_backup.ignore | dict2items | rejectattr('value', 'none') | list %}
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{% if ignores %}
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# Ignore rules of a source, replaced as a whole (--clear-ignore runs after --add-ignore within one call).
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# Kopia sorts the rules, so negations (!) cannot be relied on to come after the rule they override.
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ignore() {
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local path=$1; shift
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kopia policy set "$path" --clear-ignore >/dev/null 2>&1 &&
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kopia policy set "$path" "${@/#/--add-ignore=}" >/dev/null 2>&1 ||
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{ echo "setting the ignore rules of $path failed" >&2; failed=1; }
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}
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{% for i in ignores %}
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ignore {{ i.key | quote }} {{ i.value | map('quote') | join(' ') }}
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{% endfor %}
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{% endif %}
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for p in {{ kopia_backup.sources | map('quote') | join(' ') }}{{ ' "$etcd"' if kopia_backup.etcd_snapshot }}{{ ' "$dumps"' if kopia_backup.dumps }}; do
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[ -d "$p" ] && sources+=("$p")
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done
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kopia snapshot create "${sources[@]}" || failed=1
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exit $failed
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