initial commit

.drone.yml

@@ -0,0 +1,30 @@
+---
+kind: pipeline
+type: docker
+name: docker-build
+
+steps:
+
+- name: docker
+  image: plugins/docker
+  settings:
+    registry: c8n.io
+    repo: c8n.io/simonburblecom/rsync
+    username: 
+      from_secret: DOCKER_USER
+    password:
+      from_secret: DOCKER_PW
+
+---
+kind: secret
+name: DOCKER_USER
+get:
+  path: burble.dn42/kv/data/drone/docker
+  name: username
+  
+---
+kind: secret
+name: DOCKER_PW
+get:
+  path: burble.dn42/kv/data/drone/docker
+  name: password

Dockerfile

@@ -0,0 +1,5 @@
+FROM alpine
+RUN apk add --update bash jq openssh-client rsync && rm -rf /var/cache/apk/*
+ADD rsync.sh /rsync.sh
+ENTRYPOINT [ '/rsync.sh' ]
+

README.md

@@ -1,2 +1,7 @@
 # docker-rsync
 
+[![Build Status](https://ci.burble.dn42/api/badges/burble.dn42/docker-rsync/status.svg?ref=refs/heads/main)](https://ci.burble.dn42/burble.dn42/docker-rsync)
+
+burble.dn42 specific docker image to rsync application data to a host
+
+

rsync.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+##########################################################################
+
+tdir=''
+
+function cleanup {
+    if [ -n "$tdir" -a -d "$tdir" ]
+    then
+        rm -rf "$tdir"
+    fi
+}
+trap cleanup EXIT
+
+##########################################################################
+# figure out args
+
+rsync_hosts=( ${1//,/ } )
+rsync_src="$2"
+rsync_dst="$3"
+
+if [ -z "$rsync_dst" ]
+then
+    echo "Usage: $0 <hosts> <src> <dst>"
+    exit 1
+fi
+
+opts='-av'
+extra_args=''
+
+if [ -n "$RSYNC_CHOWN" ]
+then
+    opts+='og'
+    extra_args+=" --chown ${RSYNC_CHOWN}"
+fi
+
+if [ -n "$RSYNC_CHMOD" ]
+then
+    opts+='p'
+    extra_args+=" --chmod=${RSYNC_CHMOD}"
+fi
+    
+##########################################################################
+# generate a temporary key
+
+tdir=$(mktemp -d rsync.XXXXXX)
+key="${tdir}/rsync"
+ssh-keygen -t ed25519 -a 100 -N '' -f "$key"
+pubkey=$(cat "${key}.pub")
+
+url='https://vault.burble.dn42/v1/'
+url+='burble.dn42/ssh/user/sign/rsync'
+
+json="{\"public_key\":\"${pubkey}\"}"
+
+wget -O- -q --header "X-Vault-Token: ${VAULT_TOKEN}" \
+     --post-data="$json" "$url" \
+    | jq -r .data.signed_key > "${key}-cert.pub"
+if [ ! -s "${key}-cert.pub" ]
+then
+    echo "Failed to sign ssh key"
+    exit 1
+fi
+
+##########################################################################
+# do the rsync thing
+
+echo "Copying: $rsync_src -> $rsync_dst"
+echo "Options: $opts $extra_args"
+
+for host in "${rsync_hosts[@]}"
+do
+    echo "Syncing to host: $host"
+    rsync $opts --delete -e "ssh -i '${key}'" $extra_args \
+          "$rsync_src" "root@${host}:${rsync_dst}"
+done
+
+##########################################################################
+# end of file