Migrations

Before you start, make sure you have a clean publishing queue. Changes which are sitting in the Pending revisions page will not carried over.

You should migrate one site at time. In this guide we assume that you are using a Debian package, and we are going to migrate the documentation site, with ID amw.

You can start with an rsync against the TeX assets, which is unlikely to change much over the migration chore. You will need to jump to the amusewiki user from time to time (such commands are prefixed by $, while root one with #). [1] 

# amusewiki shell
$ mkdir -p /var/lib/amusewiki/texmf/tex/generic/amusewiki/data/

# rsync -avh \
      oldbox:/var/lib/amusewiki/texmf/tex/generic/amusewiki/data/ \
             /var/lib/amusewiki/texmf/tex/generic/amusewiki/data/
# amusewiki shell
$ texhash `kpsewhich -var-value TEXMFHOME`

You should also copy the SSL certificates over for the site you are migrating: 

# rsync -avh \
   root@oldbox:/var/lib/amusewiki/ssl/amusewiki.org/ \
   /var/lib/amusewiki/ssl/amusewiki.org/

As root on the old box, produce the export file: 

# amusewiki clone-site export --directory /tmp/export-sites-$(date -I) amw

Copy that over and import it. 

# amusewiki clone-site import /tmp/export-sites-$(date -I)/amw.yaml

Now clone the Git repository in /var/lib/amusewiki/repo/amw, previously removing the tree if needed, so the best option is using rsync and will save you the regeneration of all the existing files. Using git clone is another legitimate option, if you want to start from scratch. 

# rsync -avh --delete root@oldbox:/var/lib/amusewiki/repo/amw/ /var/lib/amusewiki/repo/amw/

Update the nginx configuration: 

# amusewiki generate-nginx-conf

executing the commands it produces to update the nginx configuration.

Finally, under screen or tmux (as it could take long) run: 

# amusewiki bootstap-archive amw

This will reindex the site and generate the generated files if missing.

Suggested migration script, to be execute with site code as argument: 

#!/bin/bash

set -e
set -x
code=$1
today=`date -I`
oldbox="root@oldbox"

if [ -z "$code" ]; then
    exit 2
fi

name=$(amusewiki set-site-variable --get canonical $code)

if [ -z "$name" ]; then
    exit 2
fi

echo "Code: $code, Name: $name"

rsync -avh $oldbox:/var/lib/amusewiki/ssl/$name/ \
      /var/lib/amusewiki/ssl/$name/

ssh $oldbox amusewiki clone-site export --directory /tmp/export-sites-$today $code
mkdir -p /tmp/amusewiki-migration-$today
scp $oldbox:/tmp/export-sites-$today/$code.yaml \
    /tmp/amusewiki-migration-$today/$code.yaml
amusewiki clone-site import \
          /tmp/amusewiki-migration-$today/$code.yaml

rsync -avh --delete $oldbox:/var/lib/amusewiki/repo/$code/ /var/lib/amusewiki/repo/$code/

# silence the notification. You may want to re-enable them later
notify=$(amusewiki set-site-variable --get mail_notify $code)
amusewiki set-site-variable --set mail_notify="" $code


amusewiki generate-nginx-conf | while read line; do
    eval $line || echo ""
done

amusewiki bootstrap-archive $code
amusewiki set-site-variable --set mail_notify="$notify" $code
amusewiki restart

[1] The amusewiki binary is just a wrapper to make sure you're using the correct user in the correct directory.

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