94 lines
2.8 KiB
Bash
Executable File
94 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# Source: https://git.server-speed.net/users/flo/bin/plain/syncrepo.sh
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# (from https://bugs.archlinux.org/task/52853)
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if [ $# -lt 1 ]; then
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echo "Usage: $0 local_dir"
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exit 1
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fi
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umask 022
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LOCAL_DIR=$1
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ADDRESS=$(cat ~/config/ADDRESS)
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# This is a simple mirroring script. To save bandwidth it first checks a
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# timestamp via HTTP and only runs rsync when the timestamp differs from the
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# local copy. As of 2016, a single rsync run without changes transfers roughly
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# 6MiB of data which adds up to roughly 250GiB of traffic per month when rsync
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# is run every minute. Performing a simple check via HTTP first can thus save a
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# lot of traffic.
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# Directory where the repo is stored locally. Example: /srv/repo
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target="/mirror/root/$1"
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# Directory where files are downloaded to before being moved in place.
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# This should be on the same filesystem as $target, but not a subdirectory of $target.
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# Example: /srv/tmp
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tmp="/home/mirror/tmp"
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# Lockfile path
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lock="/home/mirror/tmp/mirrorsync-$1.lck"
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# If you want to limit the bandwidth used by rsync set this.
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# Use 0 to disable the limit.
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# The default unit is KiB (see man rsync /--bwlimit for more)
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bwlimit=0
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# The source URL of the mirror you want to sync from.
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# If you are a tier 1 mirror use rsync.archlinux.org, for example like this:
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# rsync://rsync.archlinux.org/ftp_tier1
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# Otherwise chose a tier 1 mirror from this list and use its rsync URL:
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# https://www.archlinux.org/mirrors/
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source_url='rsync://rsync.archlinux.org/ftp_tier1'
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# An HTTP(S) URL pointing to the 'lastupdate' file on your chosen mirror.
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# If you are a tier 1 mirror use: http://rsync.archlinux.org/lastupdate
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# Otherwise use the HTTP(S) URL from your chosen mirror.
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lastupdate_url='http://rsync.archlinux.org/lastupdate'
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#### END CONFIG
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[ ! -d "${target}" ] && mkdir -p "${target}"
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[ ! -d "${tmp}" ] && mkdir -p "${tmp}"
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exec 9>"${lock}"
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flock -n 9 || exit
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rsync_cmd() {
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local -a cmd=(rsync -rtlH --safe-links --delete-after ${VERBOSE} "--timeout=600" "--contimeout=60" -p \
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--delay-updates --no-motd "--temp-dir=${tmp}" \
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"--log-file=/home/mirror/merlin/logs/$LOCAL_DIR.log" \
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--address=$ADDRESS)
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if stty &>/dev/null; then
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cmd+=(-h -v --progress)
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fi
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if ((bwlimit>0)); then
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cmd+=("--bwlimit=$bwlimit")
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fi
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"${cmd[@]}" "$@"
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}
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# if we are called without a tty (cronjob) only run when there are changes
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if ! tty -s && [[ -f "$target/lastupdate" ]] && diff -b <(curl --interface $ADDRESS -s "$lastupdate_url") "$target/lastupdate" >/dev/null; then
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# keep lastsync file in sync for statistics generated by the Arch Linux website
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rsync_cmd "$source_url/lastsync" "$target/lastsync"
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exit 0
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fi
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# optional
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# --exclude='*.links.tar.gz*' \
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# --exclude='/other' \
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# --exclude='/sources' \
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# --exclude='/iso' \
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rsync_cmd \
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"${source_url}" \
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"${target}"
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#echo "Last sync was $(date -d @$(cat ${target}/lastsync))"
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