How to migrate from Nexus Repository to JFrog Artifactory? - artifactory

Question

I have two servers, one with Nexus Repository and one with JFrog Artifactory OSS.
I would like to migrate to JFrog Artifactory but because it is open source there is no tool to migrate. If it were the pro version I could migrate easily.
I need some idea how to migrate from Nexus Repository to JFrog Artifactory OSS.

Answer 1

The way that I accomplished this task was to:
manually download the repos from Nexus. For nexus2 you can directly copy the repos from the filesystem. For nexus3 you will need to use the API. For nexus3 I used a script that I will put below.
Zip the repos into a folder
Upload the zipped file to artifactory with their import tool. Go to admin panel, artifactory, import, repositories.
You should be good to go from there more or less. I had to manually set some permissions and snapshot settings.
WARNING! This script doesn't work 100% you may/will have to modify it. WARNING!
sourceServer=
sourceRepo=
sourceUser=
sourcePassword=
logfile=$sourceRepo-backup.log
outputFile=$sourceRepo-artifacts.txt
# ======== GET DOWNLOAD URLs =========
url=$sourceServer"/service/rest/v1/assets?repository="$sourceRepo
contToken="initial"
while [ ! -z "$contToken" ]; do
if [ "$contToken" != "initial" ]; then
url=$sourceServer"/service/rest/v1/assets?continuationToken="$contToken"&repository="$sourceRepo
fi
echo Processing repository token: $contToken | tee -a $logfile
response=`curl -ksSL -u "$sourceUser:$sourcePassword" -X GET --header 'Accept: application/json' "$url"`
readarray -t artifacts < <( jq '[.items[].downloadUrl]' <<< "$response" )
printf "%s\n" "${artifacts[#]}" > artifacts.temp
sed 's/\"//g' artifacts.temp > artifacts1.temp
sed 's/,//g' artifacts1.temp > artifacts.temp
sed 's/[][]//g' artifacts.temp > artifacts1.temp
cat artifacts1.temp >> $outputFile
#for filter in "${filters[#]}"; do
# cat artifacts.temp | grep "$filter" >> $outputFile
#done
#cat maven-public-artifacts.txt
contToken=( $(echo $response | sed -n 's|.*"continuationToken" : "\([^"]*\)".*|\1|p') )
done
# ======== DOWNLOAD EVERYTHING =========
echo Downloading artifacts...
urls=($(cat $outputFile)) > /dev/null 2>&1
for url in "${urls[#]}"; do
path=${url#http://*:*/*/*/}
dir=$sourceRepo"/"${path%/*}
mkdir -p $dir
cd $dir
pwd
curl -vks -u "$sourceUser:$sourcePassword" -D response.header -X GET "$url" -O >> /dev/null 2>&1
responseCode=`cat response.header | sed -n '1p' | cut -d' ' -f2`
if [ "$responseCode" == "200" ]; then
echo Successfully downloaded artifact: $url
else
echo ERROR: Failed to download artifact: $url with error code: $responseCode
fi
rm response.header > /dev/null 2>&1
cd $curFolder
done