diff --git a/hosts b/hosts
index aaa4de9..80e65c7 100644
--- a/hosts
+++ b/hosts
@@ -1,42 +1,50 @@
 test-machines:
   hosts:
     vlorentz-desktop:
       ansible_host: vlorentz-desktop.internal.softwareheritage.org
       ansible_user: vlorentz-cassandra
       cassandra_data_root: /srv/softwareheritage/cassandra-test-0
       cassandra_max_heap_size: 8G
       cassandra_heap_newsize: 1200M
       listen_address: 128.93.66.190
-      swh_storage_ports: [12301, 12302, 12303, 12304, 12305, 12306, 12307, 12308]
+      swh_storage_ports: [12301, 12302, 12303, 12304, 12305, 12306, 12307, 12308, 12309, 12310, 12311, 12312]
     ardumont-desktop:
       ansible_host: ardumont-desktop.internal.softwareheritage.org
       ansible_user: vlorentz-cassandra
       cassandra_data_root: /data
       cassandra_max_heap_size: 8G
       cassandra_heap_newsize: 1200M
       listen_address: 128.93.66.187
       swh_storage_ports: [12301, 12302, 12303, 12304, 12305, 12306]
     ddouard-desktop:
       ansible_host: ddouard-desktop.internal.softwareheritage.org
       ansible_user: vlorentz
       cassandra_data_root: /data/vlorentz
       cassandra_max_heap_size: 8G
       cassandra_heap_newsize: 1200M
       listen_address: 128.93.66.191
       swh_storage_ports: [12301, 12302, 12303, 12304, 12305, 12306]
     seirl-desktop:
-      ansible_host: grand-palais.internal.softwareheritage.org
+      ansible_host: grandpalais.internal.softwareheritage.org
       ansible_user: vlorentz
       cassandra_data_root: /mnt/cassandra-test-0
       cassandra_max_heap_size: 8G
       cassandra_heap_newsize: 800M
       listen_address: 128.93.64.42
       swh_storage_ports: [12301, 12302, 12303, 12304, 12305, 12306]
+    ftigeot-desktop:
+      ansible_host: petitpalais.internal.softwareheritage.org
+      ansible_user: vlorentz
+      seed_address: 128.93.66.190
+      swh_storage_ports: [12301, 12302, 12303, 12304, 12305, 12306]
 
 cassandra-servers:
-  children:
-    test-machines
+  hosts:
+    vlorentz-desktop: {}
+    ardumont-desktop: {}
+    ddouard-desktop: {}
+    seirl-desktop: {}
 
 cassandra-clients:
   children:
     test-machines
diff --git a/playbooks/files/werkzeug_log_level.patch b/playbooks/files/werkzeug_log_level.patch
new file mode 100644
index 0000000..abdaa61
--- /dev/null
+++ b/playbooks/files/werkzeug_log_level.patch
@@ -0,0 +1,20 @@
+diff --git a/swh/storage/cli.py b/swh/storage/cli.py
+index fe89a69..28db754 100644
+--- a/swh/storage/cli.py
++++ b/swh/storage/cli.py
+@@ -28,11 +28,14 @@ def storage(ctx):
+               help="Binding port of the server")
+ @click.option('--debug/--no-debug', default=True,
+               help="Indicates if the server should run in debug mode")
+-def serve(config_path, host, port, debug):
++@click.pass_context
++def serve(ctx, config_path, host, port, debug):
+     '''Software Heritage Storage RPC server.
+ 
+     Do NOT use this in a production environment.
+     '''
++    if 'log_level' in ctx.obj:
++        logging.getLogger('werkzeug').setLevel(ctx.obj['log_level'])
+     api_cfg = load_and_check_config(config_path, type='any')
+     app.config.update(api_cfg)
+     app.run(host, port=int(port), debug=bool(debug))
diff --git a/playbooks/install-replayer.yml b/playbooks/install-replayer.yml
index 95068e8..97738f2 100644
--- a/playbooks/install-replayer.yml
+++ b/playbooks/install-replayer.yml
@@ -1,56 +1,60 @@
 - hosts: cassandra-clients
   tasks:
   - name: "set journal source location"
     set_fact:
       journal_source: "/home/{{ansible_user}}/swh-journal"
 
   - name: "get swh-journal's source"
     git:
       dest: "{{journal_source}}"
       repo: "https://forge.softwareheritage.org/source/swh-journal.git"
       force: yes
 
   - name: "fix 'replay' command for recent versions of click"
     shell: "sed -i \"s/'--group-id', '--consumer-id'/'--group-id'/\" {{journal_source}}/swh/journal/cli.py"
   - name: "update replayer"
     copy:
       src: replay.py
       dest: "{{journal_source}}/swh/journal/replay.py"
 
   - name: "write dummy version file"
     # to please vcversioner
     copy:
       content: "0.0.0-foo-bar"
       dest: "{{journal_source}}/version.txt"
 
   - name: "install swh-journal"
     shell: "python3 setup.py develop --user"
     args:
       chdir: "{{journal_source}}"
 
   - name: "copy replayer config file"
     template:
       src: "replayer.yml"
       dest: "/home/{{ansible_user}}/replayer_{{item}}.yml"
     vars:
       rpc_port: "{{item}}"
     with_items: "{{swh_storage_ports}}"
 
+  - name: "create systemd unit dir"
+    file:
+      path: "/home/{{ansible_user}}/.config/systemd/user/"
+      state: directory
   - name: "install replayer systemd unit"
     template:
       src: "replayer@.service"
       dest: "/home/{{ansible_user}}/.config/systemd/user/replayer@.service"
   - name: "enable systemd unit"
     systemd:
       name: "replayer@{{item}}.service"
       enabled: yes
       user: yes
       daemon_reload: yes # https://github.com/ansible/ansible/issues/36585
     with_items: "{{swh_storage_ports}}"
   - name: "restart replayer"
     systemd:
       name: "replayer@{{item}}.service"
       state: restarted
       user: yes
     with_items: "{{swh_storage_ports}}"
 
diff --git a/playbooks/install-storage.yml b/playbooks/install-storage.yml
index 2b21def..7f35d51 100644
--- a/playbooks/install-storage.yml
+++ b/playbooks/install-storage.yml
@@ -1,46 +1,56 @@
 - hosts: cassandra-clients
   tasks:
   - name: "set rpc server source location"
     set_fact:
       storage_source: "/home/{{ansible_user}}/swh-storage"
 
   - name: "get swh-storage-cassandra's source"
     git:
       dest: "{{storage_source}}"
       repo: "https://forge.softwareheritage.org/source/swh-storage-cassandra.git"
       version: "cassandra-backend2"
       remote: "origin-cassandra"
+      force: yes
+
+  - name: "patch wergzeug log level"
+    patch:
+      src: "werkzeug_log_level.patch"
+      dest: "{{storage_source}}/swh/storage/cli.py"
 
   - name: "write dummy version file"
     # to please vcversioner
     copy:
       content: "0.0.999999--"
       dest: "{{storage_source}}/version.txt"
 
   - name: "install swh-storage-cassandra"
     shell: "python3 setup.py develop --user"
     args:
       chdir: "{{storage_source}}"
 
   - name: "copy rpc server config file"
     template:
       src: "storage_cassandra.yml"
       dest: "/home/{{ansible_user}}/storage_cassandra.yml"
 
+  - name: "create systemd unit dir"
+    file:
+      path: "/home/{{ansible_user}}/.config/systemd/user/"
+      state: directory
   - name: "install swh-storage-cassandra systemd unit"
     template:
       src: "swh-storage-cassandra@.service"
       dest: "/home/{{ansible_user}}/.config/systemd/user/swh-storage-cassandra@.service"
   - name: "enable systemd unit"
     systemd:
       name: "swh-storage-cassandra@{{item}}.service"
       enabled: yes
       user: yes
       daemon_reload: yes # https://github.com/ansible/ansible/issues/36585
     with_items: "{{swh_storage_ports}}"
   - name: "start swh-storage-cassandra"
     systemd:
       name: "swh-storage-cassandra@{{item}}.service"
       state: restarted
       user: yes
     with_items: "{{swh_storage_ports}}"
diff --git a/playbooks/templates/replayer@.service b/playbooks/templates/replayer@.service
index bdb12c0..bc3af20 100644
--- a/playbooks/templates/replayer@.service
+++ b/playbooks/templates/replayer@.service
@@ -1,14 +1,14 @@
 [Unit]
-Description=swh-storage RPC server with Cassandra as backend
+Description=Kafka to Cassandra replayer
 After=network.target
 Requires=swh-storage-cassandra@%i.service
 
 [Service]
 Type=simple
 ExecStart=/bin/bash -c 'sleep $(( RANDOM % 60 )); exec /home/{{ansible_user}}/.local/bin/swh journal --config-file /home/{{ansible_user}}/replayer_%i.yml replay --broker esnode1.internal.softwareheritage.org --group-id vlorentz-cassandra-test-0'
 Restart=on-failure
 Environment=PYTHONUNBUFFERED=1
 SyslogIdentifier=replayer-%i
 
 [Install]
 WantedBy=default.target
diff --git a/playbooks/templates/storage_cassandra.yml b/playbooks/templates/storage_cassandra.yml
index 5b351cd..acc5392 100644
--- a/playbooks/templates/storage_cassandra.yml
+++ b/playbooks/templates/storage_cassandra.yml
@@ -1,8 +1,10 @@
 storage:
   cls: cassandra
   args:
-    hosts: [{{listen_address}}]
+    hosts:
+    - {% if seed_address is defined %}{{seed_address}}{% else %}{{listen_address}}{% endif %}
+
     keyspace: swh_test
     objstorage:
       cls: memory
       args: {}