in the middle of the work for authentication

2016-07-29 19:25:06 +00:00
parent bdaebcc92f
commit 82bb795b85
9 changed files with 338 additions and 90 deletions
--- a/scripts/docker-backup.sh
+++ b/scripts/docker-backup.sh
@@ -0,0 +1,129 @@
+#!/bin/bash -e
+
+function get-volumes() {
+    local vols=""
+    for vol in ${*}; do
+        local vf=$(docker inspect -f '{{.HostConfig.VolumesFrom}}' ${vol} | sed -n 's,^\[\(.*\)\]$,\1,p')
+        if test -n "$vf"; then
+            vols+=" "$(get-volumes $vf)
+        fi
+        vols+=" "$(docker inspect -f '{{.Config.Volumes}}' ${vol} | sed -n 's,^map\[\(.*\)\]$,\1,p' | sed 's,:[^ ]*,,g')
+    done
+    echo ${vols} | tr '[ ]' '[\n]' | sort | uniq | tr '[\n]' '[ ]'
+}
+
+backup=""
+volumes=""
+infile=""
+tofile=""
+toserver=""
+tocontainer=""
+while test $# -gt 0; do
+    case "$1" in
+        (-h|--help)
+            cat <<EOF
+$0 -b [OPTIONS]
+
+OPTIONS:
+  -b, --backup       <container> name of the docker container to backup
+  -v, --volume       <volume>    add volume path to backup from container
+  -a, --auto                     automatically detect volumes to backup from container
+  -i, --in-file      <file>      take already existing backup file to import
+  -s, --to-server    <server>    copy backup to docker instance on ssh server
+  -c, --to-container <container> write backup into container on ssh server
+  -o, --to-file      <file>      write backup to file
+
+DESCRIPTION:
+
+  Take docker backups and copy them to a file or restore them into a
+  docker instance on an ssh target server.
+
+  Note: Use ssh key exchange to prevent password query.
+  Note: Only volume paths are backed-up correctly
+
+EXAMPLE:
+
+  $0 -b wordpress -a -o /tmp/wordpress.bak.tar.bz2
+  $0 -i /tmp/wordpress.bak.tar.bz2 -c wordpress
+  $0 -b backup-test -a -s server -c backup-test
+
+EOF
+            exit 0
+            ;;
+        (-b|--backup)
+            shift
+            backup="$1"
+            ;;
+        (-i|--in-file)
+            shift
+            infile="$1"
+            ;;
+        (-o|--to-file)
+            shift
+            tofile="$1"
+            ;;
+        (-s|--to-server)
+            shift
+            toserver="$1"
+            ;;
+        (-c|--to-container)
+            shift
+            tocontainer="$1"
+            ;;
+        (-a|--auto)
+            if test -z "$backup"; then
+                echo "**** Error: --auto first requires --backup, try $0 --help" 1>&2
+                exit 1
+            fi
+            volumes+=" "$(get-volumes $backup)
+            ;;            
+        (-v|--volume)
+            shift
+            volumes+=("$1")
+            ;;
+        (*)
+            echo "**** Error: unknown argument $1, try $0 --help" 1>&2
+            exit 1
+            ;;
+    esac
+    if test $# -eq 0; then
+        echo "**** Error: missing argument, try $0 --help" 1>&2
+        exit 1
+    fi
+    shift
+done
+
+if test -n "$backup"; then
+    if test -z "${volumes}"; then
+        echo "**** Error: no volumes to backup, try $0 --help" 1>&2
+        exit 1
+    fi
+elif test -z "$infile"; then
+    echo "**** Error: no input source specified, try $0 --help" 1>&2
+    exit 1
+fi
+if test -n "$toserver"; then
+    if test -z "$tocontainer"; then
+        echo "**** Error: no target container specified, try $0 --help" 1>&2
+        exit 1
+    fi
+elif test -z "$tofile" -a -z "$tocontainer";then
+    echo "**** Error: no target specified, try $0 --help" 1>&2
+    exit 1
+fi
+
+(
+    if test -n "$backup"; then
+        docker run --rm -i -w / --volumes-from $backup ubuntu tar cjP ${volumes}
+    elif test -n "$infile"; then
+        cat "$infile"
+    fi
+) | (
+    if test -n "$toserver"; then
+        ssh $toserver docker run --rm -i -w / --volumes-from $tocontainer ubuntu tar xjP
+    elif test -n "$tocontainer"; then
+        docker run --rm -i -w / --volumes-from $tocontainer ubuntu tar xjP
+    elif test -n "$tofile";then
+        cat > "$tofile"
+    fi
+)