diff --git a/bibigrid/core/actions/terminate.py b/bibigrid/core/actions/terminate.py
index 44c480ae..1452cb99 100644
--- a/bibigrid/core/actions/terminate.py
+++ b/bibigrid/core/actions/terminate.py
@@ -148,10 +148,12 @@ def delete_security_groups(provider, cluster_id, security_groups, log, timeout=5
         tmp_success = False
         while not tmp_success:
             try:
+                # TODO: Check if security group exists at all
+                not_found = not provider.get_security_group(security_group_name)
                 tmp_success = provider.delete_security_group(security_group_name)
             except ConflictException:
                 tmp_success = False
-            if tmp_success:
+            if tmp_success or not_found:
                 break
             if attempts < timeout:
                 attempts += 1
@@ -162,7 +164,8 @@ def delete_security_groups(provider, cluster_id, security_groups, log, timeout=5
                 log.error(f"Attempt to delete security group {security_group_name} on "
                           f"{provider.cloud_specification['identifier']} failed.")
                 break
-        log.info(f"Delete security_group {security_group_name} -> {tmp_success}")
+        log.info(f"Delete security_group {security_group_name} -> {tmp_success or not_found} on "
+                 f"{provider.cloud_specification['identifier']}.")
         success = success and tmp_success
     return success
 
diff --git a/bibigrid/core/provider.py b/bibigrid/core/provider.py
index 61cc5012..9e06dbd0 100644
--- a/bibigrid/core/provider.py
+++ b/bibigrid/core/provider.py
@@ -265,6 +265,14 @@ def append_rules_to_security_group(self, name_or_id, rules):
         @return:
         """
 
+    @abstractmethod
+    def get_security_group(self, name_or_id):
+        """
+        Returns security group if found else None.
+        @param name_or_id:
+        @return:
+        """
+
     def get_mount_info_from_server(self, server):
         volumes = []
         for server_volume in server["volumes"]:
diff --git a/bibigrid/openstack/openstack_provider.py b/bibigrid/openstack/openstack_provider.py
index 5efabf02..75de1c2c 100644
--- a/bibigrid/openstack/openstack_provider.py
+++ b/bibigrid/openstack/openstack_provider.py
@@ -320,3 +320,11 @@ def append_rules_to_security_group(self, name_or_id, rules):
                                                  port_range_max=rule["port_range_max"],
                                                  remote_ip_prefix=rule["remote_ip_prefix"],
                                                  remote_group_id=rule["remote_group_id"])
+
+    def get_security_group(self, name_or_id):
+        """
+        Returns security group if found else None.
+        @param name_or_id:
+        @return:
+        """
+        return self.conn.get_security_group(name_or_id)
diff --git a/documentation/markdown/bibigrid_feature_list.md b/documentation/markdown/bibigrid_feature_list.md
index 5e4b9a82..0ddecab2 100644
--- a/documentation/markdown/bibigrid_feature_list.md
+++ b/documentation/markdown/bibigrid_feature_list.md
@@ -13,5 +13,6 @@
  |            [Configuration](features/configuration.md)            |                                Contains all data regarding cluster setup for all providers.                                 |
 |            [Command Line Interface](features/CLI.md)             |                                  What command line arguments can be passed into BiBiGrid.                                   |
 |              [Multi Cloud](features/multi_cloud.md)              |                                    Explanation how BiBiGrid's multi-cloud approach works                                    |
+|    [BiBiGrid Cluster Commands](features/cluster_commands.md)     |                                   Short useful commands to get information on the cluster                                   |
 
 ![](../images/actions.jpg)
\ No newline at end of file
diff --git a/documentation/markdown/features/cluster_commands.md b/documentation/markdown/features/cluster_commands.md
new file mode 100644
index 00000000..be16a42c
--- /dev/null
+++ b/documentation/markdown/features/cluster_commands.md
@@ -0,0 +1,54 @@
+# BiBiGrid Cluster Commands
+
+## [bibiinfo](../../../resources/bin/bibiinfo)
+Similar to `sinfo` but shows detailed information regarding node features.
+
+## [bibilog](../../../resources/bin/bibilog)
+`bibilog` executes `tail -f` on the most recent worker creation out log.
+Thereby, it helps you with understanding any worker startup issues.
+
+## [bibiplay](../../../resources/bin/bibiplay)
+`bibiplay` is mainly a shortcut for `ansible-playbook /opt/playbook/site.yml -i /opt/playbook/ansible_hosts`
+which allows you to execute the ansible playbook more easily.
+
+### Examples
+You have changed something in the common configuration and want to propagate this change to the master.
+```sh
+bibiplay -l master
+# executes the playbook only for the master
+```
+
+You have changed something in the slurm configuration and want to propagate this change to the master.
+```sh
+bibiplay -l master -t slurm
+```
+
+## [bibiname](../../../resources/playbook/roles/bibigrid/templates/bin/bibiname.j2)[m|v|default: w] [number]
+
+This command creates node names for the user without them needing to copy the cluster-id.
+Takes two arguments. The first defines whether a master, vpngtw or worker is meant. Worker is the default.
+The second parameter - if vpngtw or worker is selected - defines which vpngtw or worker is meant.
+
+### Examples
+Assume the cluster-id `20ozebsutekrjj4`.
+
+```sh
+bibiname m
+# bibigrid-master-20ozebsutekrjj4
+```
+
+```sh
+bibiname v 0
+# bibigrid-vpngtw-20ozebsutekrjj4-0
+```
+
+```sh
+bibiname 0 # or bibiname w 0
+# bibigrid-worker-20ozebsutekrjj4-0
+```
+
+A more advanced use would be to use the generated name to login into a worker:
+```sh
+ssh $(bibiname 0) # or bibiname w 0
+# ssh bibigrid-worker-20ozebsutekrjj4-0
+```
\ No newline at end of file
diff --git a/documentation/pdfs/ELIXIR Compute 2023 -- Multi-Cloud - BiBiGrid.pdf b/documentation/pdfs/ELIXIR Compute 2023 -- Multi-Cloud - BiBiGrid.pdf
deleted file mode 100644
index 672aa426..00000000
Binary files a/documentation/pdfs/ELIXIR Compute 2023 -- Multi-Cloud - BiBiGrid.pdf and /dev/null differ
diff --git a/resources/bin/binfo b/resources/bin/bibiinfo
similarity index 100%
rename from resources/bin/binfo
rename to resources/bin/bibiinfo
diff --git a/resources/bin/bibilog b/resources/bin/bibilog
new file mode 100644
index 00000000..22456e4e
--- /dev/null
+++ b/resources/bin/bibilog
@@ -0,0 +1,16 @@
+#!/bin/bash
+if [ "$1" == "err" ]; then
+  err_out="err"
+else
+  err_out="out"
+fi
+
+if [ "$2" == "fail" ]; then
+  fail_create="fail"
+else
+  fail_create="create"
+fi
+
+LOG="/var/log/slurm/worker_logs/$fail_create/$err_out"
+RECENT=$(ls -1rt $LOG | tail -n1)
+tail -f "$LOG/$RECENT"
\ No newline at end of file
diff --git a/resources/defaults/slurm/slurm.conf b/resources/defaults/slurm/slurm.conf
index 0f622ea9..19645fd3 100644
--- a/resources/defaults/slurm/slurm.conf
+++ b/resources/defaults/slurm/slurm.conf
@@ -9,17 +9,15 @@ AuthAltParameters=jwt_key=/etc/slurm/jwt-secret.key
 ClusterName=bibigrid
 
 MpiDefault=none
-ProctrackType=proctrack/linuxproc
+ProctrackType=proctrack/cgroup # linuxproc # changed for 23.11.0
 ReturnToService=2
 SwitchType=switch/none
 TaskPlugin=task/none
 #TaskPlugin=task/cgroup
 JobAcctGatherType=jobacct_gather/linux
 
-# see https://slurm.schedmd.com/slurm.conf.html#OPT_cloud_dns:~:text=for%20additional%20details.-,cloud_dns,-By%20default%2C%20Slurm
 # SlurmctldParameters=cloud_dns
-# Funktioniert nicht wie vermutet. slurmctld versucht mit diesem Parameter schon beim Start alle Clients aufzulösen,
-# was natürlich nicht funktioniert.
+# didn't work as expected. slurmctld tries to resolve all clients on startup which doesn't work obviously
 
 # PRIORITY
 PriorityType=priority/multifactor
@@ -37,7 +35,6 @@ SlurmctldPort=6817
 SlurmdPort=6818
 
 # DIRECTORIES
-#JobCheckpointDir=/var/lib/slurm/job_checkpoint
 SlurmdSpoolDir=/var/lib/slurm/slurmd
 StateSaveLocation=/var/lib/slurm/state_checkpoint
 
@@ -61,7 +58,7 @@ AccountingStorageHost={{ hostvars[groups.master.0].name | lower }}
 AccountingStorageUser={{ slurm_conf.db_user }}
 
 # LOGGING
-SlurmctldDebug=info
+SlurmctldDebug=debug # info
 SlurmctldLogFile=/var/log/slurm/slurmctld.log
 SlurmdDebug=info
 SlurmdLogFile=/var/log/slurm/slurmd.log
@@ -102,7 +99,7 @@ SuspendExcNodes={{ hostvars[groups.master.0].name }}
 # Maximum number of nodes
 TreeWidth= {{ slurm_conf.elastic_scheduling.TreeWidth }}
 # Do not cache dns names
-CommunicationParameters=NoAddrCache
+# CommunicationParameters=NoAddrCache # REMOVED for 23.11.0
 # Mark node status idle on suspend so DOWN is removed
 SlurmctldParameters=idle_on_node_suspend
 # Show slurm nodes all the time
@@ -113,4 +110,4 @@ ResumeFailProgram=/opt/slurm/fail.sh
 # job container
 # TO BE TESTED
 JobContainerType=job_container/tmpfs
-PrologFlags=Contain
\ No newline at end of file
+PrologFlags=Contain
diff --git a/resources/playbook/roles/bibigrid/files/slurm/cgroup.conf b/resources/playbook/roles/bibigrid/files/slurm/cgroup.conf
index 2705699f..5ab6361d 100644
--- a/resources/playbook/roles/bibigrid/files/slurm/cgroup.conf
+++ b/resources/playbook/roles/bibigrid/files/slurm/cgroup.conf
@@ -1,6 +1,6 @@
 # maybe this causes errors when using 23.11 https://slurm.schedmd.com/faq.html#cgroupv2
 CgroupMountpoint="/sys/fs/cgroup"
-CgroupAutomount=yes
+# CgroupAutomount=yes # REMOVED 23.11.0
 ConstrainCores=no
 ConstrainRAMSpace=yes
 ConstrainSwapSpace=no
diff --git a/resources/playbook/roles/bibigrid/files/slurm/create.sh b/resources/playbook/roles/bibigrid/files/slurm/create.sh
index e48d9954..d5bbc4c0 100644
--- a/resources/playbook/roles/bibigrid/files/slurm/create.sh
+++ b/resources/playbook/roles/bibigrid/files/slurm/create.sh
@@ -10,7 +10,7 @@ process_string() {
     fifth=${elements[4]}
 
     # Replace undesired characters in the second element
-    second=$(echo "$second" | sed -E 's/worker-/worker_/; s/vpnwkr-/vpnwkr_/')
+    second=$(echo "$second" | sed -E 's/worker-/worker_/; s/vpngtw-/vpngtw_/')
 
     # Check if the fifth element is not empty
     if [[ ! -z $fifth ]]; then
diff --git a/resources/playbook/roles/bibigrid/files/slurm/create_server.py b/resources/playbook/roles/bibigrid/files/slurm/create_server.py
index 19e9b828..0e8cd0da 100644
--- a/resources/playbook/roles/bibigrid/files/slurm/create_server.py
+++ b/resources/playbook/roles/bibigrid/files/slurm/create_server.py
@@ -273,13 +273,6 @@ def _run_playbook(cmdline_args):
     sys.exit(1)
 else:
     logging.info(ansible_execution_data)
-server_start_data = {"started_servers": [], "other_openstack_exceptions": [], "connection_exceptions": [],
-                     "available_servers": [], "openstack_wait_exceptions": []}
-if [key for key in server_start_data if "exception" in key]:
-    logging.warning(server_start_data)
-    sys.exit(1)
-else:
-    logging.info(server_start_data)
 
 logging.info("Successful create_server.py execution!")
 time_in_s = time.time() - start_time
diff --git a/resources/playbook/roles/bibigrid/files/slurm/fail.sh b/resources/playbook/roles/bibigrid/files/slurm/fail.sh
index 436f8b59..38d723b4 100644
--- a/resources/playbook/roles/bibigrid/files/slurm/fail.sh
+++ b/resources/playbook/roles/bibigrid/files/slurm/fail.sh
@@ -10,7 +10,7 @@ process_string() {
     fifth=${elements[4]}
 
     # Replace undesired characters in the second element
-    second=$(echo "$second" | sed -E 's/worker-/worker_/; s/vpnwkr-/vpnwkr_/')
+    second=$(echo "$second" | sed -E 's/worker-/worker_/; s/vpngtw-/vpngtw_/')
 
     # Check if the fifth element is not empty
     if [[ ! -z $fifth ]]; then
diff --git a/resources/playbook/roles/bibigrid/handlers/main.yml b/resources/playbook/roles/bibigrid/handlers/main.yml
index b6b62321..d4888f5a 100644
--- a/resources/playbook/roles/bibigrid/handlers/main.yml
+++ b/resources/playbook/roles/bibigrid/handlers/main.yml
@@ -28,6 +28,7 @@
   systemd:
     name: slurmctld
     state: restarted
+  when: "'master' in group_names"
 
 - name: slurmd
   systemd:
diff --git a/resources/playbook/roles/bibigrid/tasks/001-apt.yml b/resources/playbook/roles/bibigrid/tasks/001-apt.yml
index 407175db..0ca1c17b 100644
--- a/resources/playbook/roles/bibigrid/tasks/001-apt.yml
+++ b/resources/playbook/roles/bibigrid/tasks/001-apt.yml
@@ -10,6 +10,15 @@
     group: root
     mode: 0644
 
+- name: Wait for cloud-init / user-data to finish
+  command: cloud-init status --wait
+  changed_when: false
+
+- name: Wait for /var/lib/dpkg/lock-frontend to be released
+  shell: while lsof /var/lib/dpkg/lock-frontend ; do sleep 10; done;
+  tags:
+    - skip_ansible_lint
+
 - name: Wait for post-launch services to stop
   service_facts:
   register: result
diff --git a/resources/playbook/roles/bibigrid/tasks/020-disk-server.yml b/resources/playbook/roles/bibigrid/tasks/020-disk-server.yml
index 3bc06ebf..6691225e 100644
--- a/resources/playbook/roles/bibigrid/tasks/020-disk-server.yml
+++ b/resources/playbook/roles/bibigrid/tasks/020-disk-server.yml
@@ -17,7 +17,9 @@
     - "{{ master.disks }}"
   when: master.disks is defined
 
-- block:
+- when: volumes is defined and auto_mount
+  failed_when: false
+  block:
     - name: Make sure disks are available
       filesystem:
         fstype: ext4
@@ -36,10 +38,9 @@
       with_items: "{{ volumes }}"
 
     - name: Mount disks
+
       mount:
         path: "{{ item.name }}"
         src: "{{ item.device }}"
         state: mounted
       with_items: "{{ volumes }}"
-  when: volumes is defined and auto_mount
-  ignore_errors: true
diff --git a/resources/playbook/roles/bibigrid/tasks/042-slurm-server.yml b/resources/playbook/roles/bibigrid/tasks/042-slurm-server.yml
index 69f0098f..580aabc4 100644
--- a/resources/playbook/roles/bibigrid/tasks/042-slurm-server.yml
+++ b/resources/playbook/roles/bibigrid/tasks/042-slurm-server.yml
@@ -70,22 +70,6 @@
     - slurmdbd
     - slurmrestd
 
-- name: Enable slurmdbd and slurmrestd services
-  systemd:
-    name: "{{ item }}"
-    enabled: true
-    masked: false
-    state: started
-    daemon_reload: true
-  with_items:
-    - slurmdbd
-    - slurmrestd
-
-- name: Start slurm explicit after all dependencies are configured
-  systemd:
-    name: slurmctld
-    state: started
-
 - name: Register Slurm users home dir
   shell: "set -o pipefail &&  grep slurm /etc/passwd | cut -d ':' -f 6"
   register: slurm_home
@@ -180,6 +164,31 @@
     groups:
       - ansible
 
+- name: Generate location specific worker userdata
+  template:
+    src: slurm/worker_userdata.j2
+    dest: "/opt/slurm/userdata_{{ hostvars[item].cloud_identifier }}.txt"
+    owner: slurm
+    group: ansible
+    mode: "0640"
+  with_items: "{{ groups.vpngtw + groups.master }}"
+
+- name: Enable slurmdbd and slurmrestd services
+  systemd:
+    name: "{{ item }}"
+    enabled: true
+    masked: false
+    state: started
+    daemon_reload: true
+  with_items:
+    - slurmdbd
+    - slurmrestd
+
+- name: Start slurm explicit after all dependencies are configured
+  systemd:
+    name: slurmctld
+    state: started
+
 
 - when: slurm_home.stdout != '/opt/slurm'
   block:
@@ -210,12 +219,3 @@
         - slurmd
         - slurmdbd
         - slurmrestd
-
-- name: Generate location specific worker userdata
-  template:
-    src: slurm/worker_userdata.j2
-    dest: "/opt/slurm/userdata_{{ hostvars[item].cloud_identifier }}.txt"
-    owner: slurm
-    group: ansible
-    mode: "0640"
-  with_items: "{{ groups.vpngtw + groups.master }}"
diff --git a/resources/playbook/roles/bibigrid/tasks/042-slurm.yml b/resources/playbook/roles/bibigrid/tasks/042-slurm.yml
index 49253ca0..e134dbe2 100644
--- a/resources/playbook/roles/bibigrid/tasks/042-slurm.yml
+++ b/resources/playbook/roles/bibigrid/tasks/042-slurm.yml
@@ -9,21 +9,25 @@
     uid: 64030
     group: slurm
 
-- name: Install Slurm package (and dependencies)
+- name: Create pinning configuration for slurm-bibigrid version 23.11.*
+  copy:
+    content: |
+      Package: slurm-bibigrid
+      Pin: version 23.11.*
+      Pin-Priority: 1001
+    dest: /etc/apt/preferences.d/slurm-bibigrid
+    mode: '0311'
+
+- name: Install slurm-bibigrid package
+  apt:
+    name: slurm-bibigrid
+    state: present
+
+- name: Install Slurm package dependencies
   apt:
     name:
-      - slurm-full
       - munge
 
-# - name: Download Slurm (TEMPORARY)
-#   get_url:
-#     url: "https://docs.cebitec.uni-bielefeld.de/s/FjCP3xQPPnBwSy9/download?path=%2F&files=slurm-full_23.11.0-0_amd64.deb"  # Replace with your package link
-#     dest: "/tmp/package.deb"  # Destination where the package will be saved
-# - name: Install Slurm package
-#   apt:
-#     deb: "/tmp/package.deb"
-#     state: present  # Install the package if not already installed
-
 - name: Create new secret (Munge)
   copy:
     content: '{{ slurm_conf.munge_key }}'
diff --git a/resources/playbook/roles/bibigrid/tasks/main.yml b/resources/playbook/roles/bibigrid/tasks/main.yml
index b81dfdbc..1a6713f7 100644
--- a/resources/playbook/roles/bibigrid/tasks/main.yml
+++ b/resources/playbook/roles/bibigrid/tasks/main.yml
@@ -136,6 +136,7 @@
     - debug:
         msg: "[BIBIGRID] Setup Slurm"
     - import_tasks: 042-slurm.yml
+      when: "'vpngtw' not in group_names"
     - import_tasks: 042-slurm-server.yml
       when: "'master' in group_names"