diff --git a/apache/handlers/main.yml b/apache/handlers/main.yml
index 96daa368..931e9c94 100644
--- a/apache/handlers/main.yml
+++ b/apache/handlers/main.yml
@@ -3,13 +3,16 @@
   service:
     name: apache2
     state: restarted
+  when: not ansible_check_mode
 
 - name: reload apache
   service:
     name: apache2
     state: reloaded
+  when: not ansible_check_mode
 
 - name: restart munin-node
   service:
     name: munin-node
     state: restarted
+  when: not ansible_check_mode
diff --git a/apache/tasks/auth.yml b/apache/tasks/auth.yml
index fd01517c..0c8322a9 100644
--- a/apache/tasks/auth.yml
+++ b/apache/tasks/auth.yml
@@ -14,7 +14,12 @@
 - name: Load IP whitelist task
   include: ip_whitelist.yml
 
-- name: include private IP whitelist for server-status
+- name: Is status.conf present?
+  stat:
+    path: /etc/apache2/mods-available/status.conf
+  register: _status_conf
+
+- name: Include private IP whitelist for server-status
   lineinfile:
     dest: /etc/apache2/mods-available/status.conf
     line: "        include /etc/apache2/ipaddr_whitelist.conf"
@@ -22,6 +27,7 @@
     state: present
   tags:
     - apache
+  when: _status_conf.stat.exists or not ansible_check_mode
 
 - name: Copy private_htpasswd
   copy:
@@ -35,6 +41,11 @@
   tags:
     - apache
 
+- name: Is private_htpasswd present?
+  stat:
+    path: /etc/apache2/private_htpasswd
+  register: _private_htpasswd
+
 - name: add user:pwd to private htpasswd
   lineinfile:
     dest: /etc/apache2/private_htpasswd
@@ -44,6 +55,7 @@
   notify: reload apache
   tags:
     - apache
+  when: _private_htpasswd.stat.exists or not ansible_check_mode
 
 - name: remove user:pwd from private htpasswd
   lineinfile:
@@ -54,3 +66,4 @@
   notify: reload apache
   tags:
     - apache
+  when: _private_htpasswd.stat.exists or not ansible_check_mode
diff --git a/apache/tasks/ip_whitelist.yml b/apache/tasks/ip_whitelist.yml
index 18f4a681..fc576a44 100644
--- a/apache/tasks/ip_whitelist.yml
+++ b/apache/tasks/ip_whitelist.yml
@@ -1,6 +1,11 @@
 ---
 
-- name: add IP addresses to private IP whitelist
+- name: Is ipaddr_whitelist.conf present?
+  stat:
+    path: /etc/apache2/ipaddr_whitelist.conf
+  register: _ipaddr_whitelist_conf
+
+- name: Add IP addresses to private IP whitelist
   lineinfile:
     dest: /etc/apache2/ipaddr_whitelist.conf
     line: "Require ip {{ item }}"
@@ -10,8 +15,9 @@
   tags:
     - apache
     - ips
+  when: _ipaddr_whitelist_conf.stat.exists or not ansible_check_mode
 
-- name: remove IP addresses from private IP whitelist
+- name: Remove IP addresses from private IP whitelist
   lineinfile:
     dest: /etc/apache2/ipaddr_whitelist.conf
     line: "Require ip {{ item }}"
diff --git a/apache/tasks/log2mail.yml b/apache/tasks/log2mail.yml
index 3b0650b7..daf59db9 100644
--- a/apache/tasks/log2mail.yml
+++ b/apache/tasks/log2mail.yml
@@ -6,6 +6,7 @@
     state: present
   tags:
     - apache
+  when: not ansible_check_mode
 
 - name: Add log2mail config for Apache segfaults
   template:
diff --git a/apache/tasks/main.yml b/apache/tasks/main.yml
index 1a028205..efc7b30b 100644
--- a/apache/tasks/main.yml
+++ b/apache/tasks/main.yml
@@ -53,6 +53,7 @@
   notify: reload apache
   tags:
     - apache
+  when: not ansible_check_mode
 
 - name: basic modules are enabled
   apache2_module:
@@ -61,7 +62,9 @@
   loop:
     - cgi
   notify: reload apache
-  when: apache_mpm == "prefork" or apache_mpm == "itk"
+  when:
+    - apache_mpm == "prefork" or apache_mpm == "itk"
+    - not ansible_check_mode
   tags:
     - apache
 
@@ -123,14 +126,21 @@
   tags:
     - apache
 
-- name: default vhost is enabled
+- name: Is 000-evolinux-default.conf present?
+  stat:
+    path: /etc/apache2/sites-available/000-evolinux-default.conf
+  register: _000_evolinux_default_conf
+
+- name: Default vhost is enabled
   file:
     src: /etc/apache2/sites-available/000-evolinux-default.conf
     dest: /etc/apache2/sites-enabled/000-default.conf
     state: link
     force: yes
   notify: reload apache
-  when: apache_evolinux_default_enabled | bool
+  when:
+    - apache_evolinux_default_enabled | bool
+    - _000_evolinux_default_conf.stat.exists or not ansible_check_mode
   tags:
     - apache
 
@@ -138,7 +148,7 @@
   tags:
     - apache
 
-- name: is umask already present?
+- name: Is umask already present?
   command: "grep -E '^umask ' /etc/apache2/envvars"
   failed_when: False
   changed_when: False
@@ -147,6 +157,11 @@
   tags:
     - apache
 
+- name: Is envvars present?
+  stat:
+    path: /etc/apache2/envvars
+  register: _envvars
+
 - name: Add a mark in envvars for umask
   blockinfile:
     dest: /etc/apache2/envvars
@@ -155,7 +170,9 @@
       ## Set umask for writing by Apache user.
       ## Set rights on files and directories written by Apache
       umask 007
-  when: envvar_grep_umask.rc != 0
+  when:
+    - envvar_grep_umask.rc != 0
+    - _envvars.stat.exists or not ansible_check_mode
   tags:
     - apache
 
@@ -183,6 +200,11 @@
   tags:
     - apache
 
+- name: Is logrotate.d/apache2 present?
+  stat:
+    path: /etc/logrotate.d/apache2
+  register: _logrotate_d_apache2
+
 - name: "logrotate: {{ apache_logrotate_frequency }}"
   replace:
     dest: /etc/logrotate.d/apache2
@@ -190,6 +212,7 @@
     replace: "{{ apache_logrotate_frequency }}"
   tags:
     - apache
+  when: _logrotate_d_apache2.stat.exists or not ansible_check_mode
 
 - name: "logrotate: rotate {{ apache_logrotate_rotate }}"
   replace:
@@ -198,6 +221,7 @@
     replace: '\1 {{ apache_logrotate_rotate }}'
   tags:
     - apache
+  when: _logrotate_d_apache2.stat.exists or not ansible_check_mode
 
 - include: log2mail.yml
   when: apache_log2mail_include
diff --git a/apache/tasks/munin.yml b/apache/tasks/munin.yml
index fe07a5cf..b9602511 100644
--- a/apache/tasks/munin.yml
+++ b/apache/tasks/munin.yml
@@ -23,6 +23,7 @@
   tags:
     - apache
     - munin
+  when: not ansible_check_mode
 
 - name: "Install fcgi packages for Munin graphs"
   apt:
@@ -43,6 +44,7 @@
   tags:
     - apache
     - munin
+  when: not ansible_check_mode
 
 - name: "Apache has access to /var/log/munin/"
   file:
@@ -51,3 +53,4 @@
   tags:
     - apache
     - munin
+  when: not ansible_check_mode
diff --git a/apache/tasks/server_status.yml b/apache/tasks/server_status.yml
index efd2b00e..77c065f8 100644
--- a/apache/tasks/server_status.yml
+++ b/apache/tasks/server_status.yml
@@ -21,15 +21,22 @@
   args:
     creates: "{{ apache_serverstatus_suffix_file }}"
 
+- name: Is apache_serverstatus_suffix_file present?
+  stat:
+    path: "{{ apache_serverstatus_suffix_file }}"
+  register: _apache_serverstatus_suffix_file
+
 - name: read apache server status suffix
   command: "tail -n 1 {{ apache_serverstatus_suffix_file }}"
   changed_when: False
   check_mode: no
   register: new_apache_serverstatus_suffix
+  when: _apache_serverstatus_suffix_file.stat.exists or not ansible_check_mode
 
 - name: overwrite apache_serverstatus_suffix
   set_fact:
     apache_serverstatus_suffix: "{{ new_apache_serverstatus_suffix.stdout }}"
+  when: _apache_serverstatus_suffix_file.stat.exists or not ansible_check_mode
 
 - debug:
     var: apache_serverstatus_suffix
@@ -40,12 +47,14 @@
     dest: /var/www/index.html
     regexp: '__SERVERSTATUS_SUFFIX__'
     replace: "{{ apache_serverstatus_suffix }}"
+  when: _apache_serverstatus_suffix_file.stat.exists or not ansible_check_mode
 
 - name: add server-status suffix in default site index if missing
   replace:
     dest: /var/www/index.html
     regexp: '"/server-status-?"'
     replace: '"/server-status-{{ apache_serverstatus_suffix }}"'
+  when: _apache_serverstatus_suffix_file.stat.exists or not ansible_check_mode
 
 - name: add server-status suffix in default VHost
   replace:
@@ -53,12 +62,19 @@
     regexp: '<Location /server-status-?>'
     replace: '<Location /server-status-{{ apache_serverstatus_suffix }}>'
   notify: reload apache
+  when: _apache_serverstatus_suffix_file.stat.exists or not ansible_check_mode
+
+- name: Is munin-node present?
+  stat:
+    path: /etc/munin/plugin-conf.d/munin-node
+  register: _munin_node
 
 - name: Munin configuration has a section for apache
   lineinfile:
     dest: /etc/munin/plugin-conf.d/munin-node
     line: "[apache_*]"
     create: no
+  when: _munin_node.stat.exists or not ansible_check_mode
 
 - name: apache-status URL is configured for Munin
   lineinfile:
@@ -68,3 +84,4 @@
     insertafter: "[apache_*]"
     create: no
   notify: restart munin-node
+  when: _munin_node.stat.exists or not ansible_check_mode
diff --git a/etc-git/tasks/main.yml b/etc-git/tasks/main.yml
index f71ba552..455953b0 100644
--- a/etc-git/tasks/main.yml
+++ b/etc-git/tasks/main.yml
@@ -8,14 +8,22 @@
     - etc-git
   when: 
     - ansible_distribution == "Debian"
+    - not ansible_check_mode
 
 - name: Install and configure utilities
   include: utils.yml
   tags:
     - etc-git
 
+- name: Is git present?
+  stat:
+    path: /usr/bin/git
+  register: _git
+
 - name: Configure repositories
   include: repositories.yml
   tags:
     - etc-git
-  when: etc_git_config_repositories | bool
\ No newline at end of file
+  when:
+    - etc_git_config_repositories | bool
+    - _git.stat.exists or not ansible_check_mode
diff --git a/evoacme/handlers/main.yml b/evoacme/handlers/main.yml
index 1ea11783..fb817eb7 100644
--- a/evoacme/handlers/main.yml
+++ b/evoacme/handlers/main.yml
@@ -1,14 +1,17 @@
 - name: newaliases
   command: newaliases
+  when: not ansible_check_mode
 
 - name: Test Apache conf
   command: apache2ctl -t
   notify: "Reload Apache conf"
+  when: not ansible_check_mode
 
 - name: reload apache2
   service:
     name: apache2
     state: reloaded
+  when: not ansible_check_mode
 
 - name: apt update
   apt:
@@ -18,8 +21,10 @@
   service:
     name: squid3
     state: reloaded
+  when: not ansible_check_mode
 
 - name: reload squid
   service:
     name: squid
     state: reloaded
+  when: not ansible_check_mode
diff --git a/evocheck/tasks/exec.yml b/evocheck/tasks/exec.yml
index 306cf019..1338a97b 100644
--- a/evocheck/tasks/exec.yml
+++ b/evocheck/tasks/exec.yml
@@ -10,6 +10,8 @@
 
 - debug:
     var: evocheck_run.stdout_lines
-  when: evocheck_run.stdout | length > 0
+  when:
+    - not ansible_check_mode
+    - evocheck_run.stdout | length > 0
   tags:
   - evocheck-exec
diff --git a/evolinux-base/tasks/default_www.yml b/evolinux-base/tasks/default_www.yml
index 84580b54..4d8905b5 100644
--- a/evolinux-base/tasks/default_www.yml
+++ b/evolinux-base/tasks/default_www.yml
@@ -38,6 +38,7 @@
         owner: root
         group: ssl-cert
         mode: "0640"
+      when: not ansible_check_mode
 
     - name: Create certificate for default site
       command: openssl x509 -req -days 3650 -sha256 -in /etc/ssl/{{ ansible_fqdn }}.csr -signkey /etc/ssl/private/{{ ansible_fqdn }}.key -out /etc/ssl/certs/{{ ansible_fqdn }}.crt
diff --git a/evolinux-base/tasks/hardware.yml b/evolinux-base/tasks/hardware.yml
index 7ebecc82..d8a966d8 100644
--- a/evolinux-base/tasks/hardware.yml
+++ b/evolinux-base/tasks/hardware.yml
@@ -43,7 +43,9 @@
     state: present
   tags:
     - packages
-  when: ansible_virtualization_role == "host"
+  when:
+    - ansible_virtualization_role == "host"
+    - not ansible_check_mode
 
 ## RAID
 # Dell and others: MegaRAID SAS
@@ -108,6 +110,7 @@
         name: ssacli
       tags:
         - packages
+      when: not ansible_check_mode
   when:
     - "'Hewlett-Packard Company Smart Array' in raidmodel.stdout"
     - "'Adaptec Smart Storage PQI' in raidmodel.stdout"
@@ -134,6 +137,7 @@
         state: present
       tags:
         - packages
+      when: not ansible_check_mode
 
     - name: cciss-vol-statusd init script is present (HP gen <10)
       template:
@@ -246,6 +250,7 @@
         allow_unauthenticated: yes
       tags:
         - packages
+      when: not ansible_check_mode
 
     - name: Configure packages for DELL/LSI hardware
       template:
@@ -263,6 +268,7 @@
       tags:
         - packages
         - config
+      when: not ansible_check_mode
   when:
     - "'MegaRAID' in raidmodel.stdout"
     - evolinux_packages_hardware_raid | bool
diff --git a/evolinux-base/tasks/log2mail.yml b/evolinux-base/tasks/log2mail.yml
index 35ce19cf..36a37483 100644
--- a/evolinux-base/tasks/log2mail.yml
+++ b/evolinux-base/tasks/log2mail.yml
@@ -16,6 +16,12 @@
     daemon-reload: yes
     state: started
     enabled: yes
+  when: not ansible_check_mode
+
+- name: Is log2mail/config/default present?
+  stat:
+    path: /etc/log2mail/config/default
+  register: _log2mail_config_default
 
 - name: log2mail config is present
   blockinfile:
@@ -32,4 +38,5 @@
   notify: restart log2mail
   tags:
     - log2mail
+  when: _log2mail_config_default.stat.exists or not ansible_check_mode
 
diff --git a/evolinux-base/tasks/packages.yml b/evolinux-base/tasks/packages.yml
index b4a1d666..ad72ed55 100644
--- a/evolinux-base/tasks/packages.yml
+++ b/evolinux-base/tasks/packages.yml
@@ -89,7 +89,9 @@
   apt:
     name: serveur-base
     allow_unauthenticated: yes
-  when: evolinux_packages_serveur_base | bool
+  when: 
+    - evolinux_packages_serveur_base | bool
+    - not ansible_check_mode
 
 - name: Install/Update packages for Stretch and later
   apt:
diff --git a/evolinux-base/tasks/postfix.yml b/evolinux-base/tasks/postfix.yml
index 6a46548b..ca9b72f5 100644
--- a/evolinux-base/tasks/postfix.yml
+++ b/evolinux-base/tasks/postfix.yml
@@ -11,6 +11,11 @@
     - packages
     - postfix
 
+- name: Is main.cf present?
+  stat:
+    path: /etc/postfix/main.cf
+  register: _main_cf
+
 - name: configure postfix myhostname
   lineinfile:
     dest: /etc/postfix/main.cf
@@ -20,6 +25,7 @@
   notify: reload postfix
   tags:
     - postfix
+  when: _main_cf.stat.exists or not ansible_check_mode
 
 - name: configure postfix mynetworks
   lineinfile:
@@ -30,6 +36,7 @@
   notify: reload postfix
   tags:
     - postfix
+  when: _main_cf.stat.exists or not ansible_check_mode
 
 - name: fetch users list
   shell: "set -o pipefail && getent passwd | cut -d':' -f 1 | grep -v root"
@@ -41,6 +48,11 @@
   tags:
     - postfix
 
+- name: Is aliases present?
+  stat:
+    path: /etc/aliases
+  register: _aliases
+
 - name: each user is aliased to root
   lineinfile:
     dest: /etc/aliases
@@ -48,7 +60,9 @@
     line: "{{ item }}: root"
   loop: "{{ non_root_users_list.stdout_lines }}"
   notify: newaliases
-  when: evolinux_postfix_users_alias_root | bool
+  when:
+    - evolinux_postfix_users_alias_root | bool
+    - _aliases.stat.exists or not ansible_check_mode
   tags:
     - postfix
 
@@ -65,7 +79,9 @@
     - error
     - bounce
   notify: newaliases
-  when: evolinux_postfix_mailer_alias_root | bool
+  when:
+    - evolinux_postfix_mailer_alias_root | bool
+    - _aliases.stat.exists or not ansible_check_mode
   tags:
     - postfix
 
@@ -75,7 +91,9 @@
     regexp: "^root:"
     line: "root: {{ postfix_alias_email or general_alert_email | mandatory }}"
   notify: newaliases
-  when: evolinux_postfix_root_alias | bool
+  when:
+    - evolinux_postfix_root_alias | bool
+    - _aliases.stat.exists or not ansible_check_mode
   tags:
     - postfix
 
diff --git a/evolinux-users/tasks/user.yml b/evolinux-users/tasks/user.yml
index 0f8bd480..1c18f935 100644
--- a/evolinux-users/tasks/user.yml
+++ b/evolinux-users/tasks/user.yml
@@ -154,13 +154,21 @@
   register: grep_profile_evomaintenance
 
 ## Don't add the trap if it is present or commented
+
+- name: "Is '/home/{{ user.name }}' present?"
+  stat:
+    path: '/home/{{ user.name }}'
+  register: _home_user_name
+
 - name: "User '{{ user.name }}' has its shell trap for evomaintenance"
   lineinfile:
     state: present
     dest: '/home/{{ user.name }}/.profile'
     insertafter: EOF
     line: 'trap "sudo /usr/share/scripts/evomaintenance.sh" 0'
-  when: grep_profile_evomaintenance.rc != 0
+  when:
+    - grep_profile_evomaintenance.rc != 0
+    - _home_user_name.stat.exists or not ansible_check_mode
 
 # SSH keys
 
@@ -192,5 +200,6 @@
   when:
     - user.ssh_keys is defined
     - user.ssh_keys | length > 0
+    - _home_user_name.stat.exists or not ansible_check_mode
 
 - meta: flush_handlers
diff --git a/haproxy/handlers/main.yml b/haproxy/handlers/main.yml
index 9cf3b9cb..24378067 100644
--- a/haproxy/handlers/main.yml
+++ b/haproxy/handlers/main.yml
@@ -3,13 +3,16 @@
   service:
     name: haproxy
     state: reloaded
+  when: not ansible_check_mode
 
 - name: restart haproxy
   service:
     name: haproxy
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart munin-node
   service:
     name: munin-node
     state: restarted
+  when: not ansible_check_mode
diff --git a/haproxy/tasks/main.yml b/haproxy/tasks/main.yml
index d38e83af..831e8ef0 100644
--- a/haproxy/tasks/main.yml
+++ b/haproxy/tasks/main.yml
@@ -114,6 +114,11 @@
     - config
     - update-config
 
+- name: Is haproxy.cfg present?
+  stat:
+    path: /etc/haproxy/haproxy.cfg
+  register: _haproxy_cfg
+
 - name: Rotate logs with dateext
   lineinfile:
     dest: /etc/logrotate.d/haproxy
@@ -123,6 +128,12 @@
   tags:
     - haproxy
     - logrotate
+  when: _haproxy_cfg.stat.exists or not ansible_check_mode
+
+- name: Is logrotate.d/haproxy present?
+  stat:
+    path: /etc/logrotate.d/haproxy
+  register: _logrotate_d_haproxy
 
 - name: Rotate logs with nodelaycompress
   lineinfile:
@@ -133,6 +144,7 @@
   tags:
     - haproxy
     - logrotate
+  when: _logrotate_d_haproxy.stat.exists or not ansible_check_mode
 
 - name: Set net.ipv4.ip_nonlocal_bind
   sysctl:
diff --git a/lxc-php/tasks/php74.yml b/lxc-php/tasks/php74.yml
index 64677009..7703ac60 100644
--- a/lxc-php/tasks/php74.yml
+++ b/lxc-php/tasks/php74.yml
@@ -5,11 +5,17 @@
     name: "{{ lxc_php_version }}"
     container_command: "DEBIAN_FRONTEND=noninteractive apt install -y php-fpm php-cli php-gd php-intl php-imap php-ldap php-mysql php-pgsql php-sqlite3 php-curl php-zip php-mbstring php-xml php-zip composer libphp-phpmailer"
 
+- name: "Is sources.list present?"
+  stat:
+    path: "/var/lib/lxc/{{ lxc_php_version }}/rootfs/etc/apt/sources.list"
+  register: _sources_list
+
 - name: "{{ lxc_php_version }} - fix bullseye repository"
   replace:
     dest: "/var/lib/lxc/{{ lxc_php_version }}/rootfs/etc/apt/sources.list"
     regexp: 'bullseye/updates'
     replace: 'bullseye-security'
+  when: _sources_list.stat.exists or not ansible_check_mode
 
 - name: "{{ lxc_php_version }} - Copy evolinux PHP configuration"
   template:
diff --git a/lxc-php/tasks/php80.yml b/lxc-php/tasks/php80.yml
index b0ff90fe..31f327b9 100644
--- a/lxc-php/tasks/php80.yml
+++ b/lxc-php/tasks/php80.yml
@@ -5,11 +5,17 @@
     name: "{{ lxc_php_version }}"
     container_command: "DEBIAN_FRONTEND=noninteractive apt install -y wget apt-transport-https gnupg"
 
+- name: "Is sources.list present?"
+  stat:
+    path: "/var/lib/lxc/{{ lxc_php_version }}/rootfs/etc/apt/sources.list"
+  register: _sources_list
+
 - name: "{{ lxc_php_version }} - fix bullseye repository"
   replace:
     dest: "/var/lib/lxc/{{ lxc_php_version }}/rootfs/etc/apt/sources.list"
     regexp: 'bullseye/updates'
     replace: 'bullseye-security'
+  when: _sources_list.stat.exists or not ansible_check_mode
 
 - name: "{{ lxc_php_version }} - Add sury repo"
   lineinfile:
diff --git a/lxc-php/tasks/php81.yml b/lxc-php/tasks/php81.yml
index 91dc38e1..149f1ff6 100644
--- a/lxc-php/tasks/php81.yml
+++ b/lxc-php/tasks/php81.yml
@@ -5,11 +5,17 @@
     name: "{{ lxc_php_version }}"
     container_command: "DEBIAN_FRONTEND=noninteractive apt install -y wget apt-transport-https gnupg"
 
+- name: "Is sources.list present?"
+  stat:
+    path: "/var/lib/lxc/{{ lxc_php_version }}/rootfs/etc/apt/sources.list"
+  register: _sources_list
+
 - name: "{{ lxc_php_version }} - fix bullseye repository"
   replace:
     dest: "/var/lib/lxc/{{ lxc_php_version }}/rootfs/etc/apt/sources.list"
     regexp: 'bullseye/updates'
     replace: 'bullseye-security'
+  when: _sources_list.stat.exists or not ansible_check_mode
 
 - name: "{{ lxc_php_version }} - Add sury repo"
   lineinfile:
diff --git a/lxc/tasks/create-container.yml b/lxc/tasks/create-container.yml
index ad4f35d6..7a28f499 100644
--- a/lxc/tasks/create-container.yml
+++ b/lxc/tasks/create-container.yml
@@ -1,9 +1,16 @@
 ---
+
+- name: Is lxc installed?
+  stat:
+    path: /usr/bin/lxc-ls
+  register: _lxc_ls
+
 - name: "Check if container {{ name }} exists"
   command: "lxc-ls {{ name }}"
   changed_when: false
   check_mode: no
   register: container_exists
+  when: _lxc_ls.stat.exists or not ansible_check_mode
 
 - name: "Create container {{ name }}"
   lxc_container:
@@ -12,20 +19,31 @@
     template: debian
     state: stopped
     template_options: "--arch amd64 --release {{ release }}"
-  when: container_exists.stdout_lines | length == 0
+  when:
+    - container_exists.stdout_lines | length == 0
+    - _lxc_container.stat.exists or not ansible_check_mode
+
+- name: "Is container {{ name }} created?"
+  stat:
+    path: "/var/lib/lxc/{{ name }}"
+  register: _lxc_container
 
 - name: "Disable network configuration inside container {{ name }}"
   replace:
     name: "/var/lib/lxc/{{ name }}/rootfs/etc/default/networking"
     regexp: "^#CONFIGURE_INTERFACES=yes"
     replace: CONFIGURE_INTERFACES=no
-  when: lxc_network_type == "none"
+  when:
+    - lxc_network_type == "none"
+    - _lxc_container.stat.exists or not ansible_check_mode
 
 - name: "Disable interface shut down on halt inside container {{ name }} (Jessie container)"
   lineinfile:
     name: "/var/lib/lxc/{{ name }}/rootfs/etc/default/halt"
     line: "NETDOWN=no"
-  when: lxc_network_type == "none" and release == "jessie"
+  when:
+    - lxc_network_type == "none" and release == "jessie"
+    - _lxc_container.stat.exists or not ansible_check_mode
 
 - name: "Make the container {{ name }} poweroff on SIGPWR sent by lxc-stop (Jessie container)"
   file:
@@ -44,13 +62,16 @@
   lineinfile:
     name: "/var/lib/lxc/{{ name }}/rootfs/etc/hosts"
     line: "127.0.0.1 {{ name }}"
+  when: _lxc_container.stat.exists or not ansible_check_mode
 
 - name: "Fix permission on /dev for container {{ name }}"
   lineinfile:
     name: "/var/lib/lxc/{{ name }}/rootfs/etc/rc.local"
     line: "chmod 755 /dev"
     insertbefore: "^exit 0$"
-  when: release == 'jessie'
+  when:
+    - release == 'jessie'
+    - _lxc_container.stat.exists or not ansible_check_mode
 
 - name: "Ensure that {{ name }} container is running"
   lxc_container:
diff --git a/lxc/tasks/main.yml b/lxc/tasks/main.yml
index 3ec586bd..b929099a 100644
--- a/lxc/tasks/main.yml
+++ b/lxc/tasks/main.yml
@@ -43,11 +43,17 @@
     - lxc_unprivilegied_containers | bool
     - root_subuids.rc != 0
 
+- name: Is lxc present?
+  stat:
+    path: /var/lib/lxc
+  register: _lib_lxc
+
 - name: Get filesystem options
   command: findmnt --noheadings --target /var/lib/lxc --output OPTIONS
   changed_when: false
   check_mode: no
   register: check_fs_options
+  when: _lib_lxc.stat.exists or not ansible_check_mode
 
 - name: Check if options are correct
   assert:
@@ -56,6 +62,7 @@
       - "'noexec' not in check_fs_options.stdout"
       - "'nosuid' not in check_fs_options.stdout"
     msg: "LXC directory is in a filesystem with incompatible options"
+  when: _lib_lxc.stat.exists or not ansible_check_mode
 
 - name: Create containers
   include: create-container.yml
diff --git a/minifirewall/tasks/config.yml b/minifirewall/tasks/config.yml
index b0a1d7a6..c78468fc 100644
--- a/minifirewall/tasks/config.yml
+++ b/minifirewall/tasks/config.yml
@@ -24,12 +24,18 @@
     var: minifirewall_is_running
     verbosity: 1
 
+- name: Is minifirewall present?
+  stat:
+    path: /etc/default/minifirewall
+  register: _minifirewall
+
 - name: Begin marker for IP addresses
   lineinfile:
     dest: "/etc/default/minifirewall"
     line: "# BEGIN ANSIBLE MANAGED BLOCK FOR IPS"
     insertbefore: '^# Main interface'
     create: no
+  when: _minifirewall.stat.exists or not ansible_check_mode
 
 - name: End marker for IP addresses
   lineinfile:
@@ -37,6 +43,7 @@
     create: no
     line: "# END ANSIBLE MANAGED BLOCK FOR IPS"
     insertafter: '^PRIVILEGIEDIPS='
+  when: _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Verify that at least 1 trusted IP is provided
   assert:
@@ -84,6 +91,7 @@
       PRIVILEGIEDIPS='{{ minifirewall_privilegied_ips | join(' ') }}'
     create: no
   register: minifirewall_config_ips
+  when: _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Begin marker for ports
   lineinfile:
@@ -91,6 +99,7 @@
     line: "# BEGIN ANSIBLE MANAGED BLOCK FOR PORTS"
     insertbefore: '^# Protected services'
     create: no
+  when: _minifirewall.stat.exists or not ansible_check_mode
 
 - name: End marker for ports
   lineinfile:
@@ -98,6 +107,7 @@
     line: "# END ANSIBLE MANAGED BLOCK FOR PORTS"
     insertafter: '^SERVICESUDP3='
     create: no
+  when: _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Configure ports
   blockinfile:
@@ -122,6 +132,7 @@
       SERVICESUDP3='{{ minifirewall_private_ports_udp | join(' ') }}'
     create: no
   register: minifirewall_config_ports
+  when: _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Configure DNSSERVEURS
   lineinfile:
@@ -193,7 +204,9 @@
     line: "PROXY='{{ minifirewall_proxy }}'"
     regexp: "PROXY=('|\").*('|\")"
     create: no
-  when: minifirewall_proxy is not none
+  when:
+    - minifirewall_proxy is not none
+    - _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Configure PROXYPORT
   lineinfile:
@@ -201,7 +214,9 @@
     line: "PROXYPORT='{{ minifirewall_proxyport }}'"
     regexp: "PROXYPORT=('|\").*('|\")"
     create: no
-  when: minifirewall_proxyport is not none
+  when:
+    - minifirewall_proxyport is not none
+    - _minifirewall.stat.exists or not ansible_check_mode
 
 # Warning: keep double quotes for the value,
 # since we often reference a shell variable that needs to be interpolated
@@ -211,7 +226,9 @@
     line: "PROXYBYPASS=\"{{ minifirewall_proxybypass | join(' ') }}\""
     regexp: "PROXYBYPASS=('|\").*('|\")"
     create: no
-  when: minifirewall_proxybypass is not none
+  when:
+    - minifirewall_proxyport is not none
+    - _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Configure BACKUPSERVERS
   lineinfile:
@@ -219,7 +236,9 @@
     line: "BACKUPSERVERS='{{ minifirewall_backupservers | join(' ') }}'"
     regexp: "BACKUPSERVERS=('|\").*('|\")"
     create: no
-  when: minifirewall_backupservers is not none
+  when:
+    - minifirewall_backupservers is not none
+    - _minifirewall.stat.exists or not ansible_check_mode
 
 - name: Configure SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS
   lineinfile:
diff --git a/munin/handlers/main.yml b/munin/handlers/main.yml
index 8654181d..6dcd127d 100644
--- a/munin/handlers/main.yml
+++ b/munin/handlers/main.yml
@@ -4,12 +4,14 @@
   service:
     name: munin-node
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart munin_node
   service:
     name: munin_node
     state: restarted
+  when: not ansible_check_mode
 
 - name: systemd daemon-reload
   systemd:
-    daemon_reload: yes
\ No newline at end of file
+    daemon_reload: yes
diff --git a/munin/tasks/main.yml b/munin/tasks/main.yml
index a4ea9a49..93f50e07 100644
--- a/munin/tasks/main.yml
+++ b/munin/tasks/main.yml
@@ -32,7 +32,9 @@
       removes: /var/lib/munin/localdomain
     notify: restart munin-node
 
-  when: not ansible_hostname == "localdomain"
+  when:
+    - not ansible_hostname == "localdomain"
+    - not ansible_check_mode
   tags:
     - munin
 
@@ -79,6 +81,7 @@
   notify: restart munin-node
   tags:
     - munin
+  when: not ansible_check_mode
 
 - name: Enable sensors_ plugin on dedicated hardware
   file:
@@ -92,6 +95,7 @@
   notify: restart munin-node
   tags:
     - munin
+  when: not ansible_check_mode
 
 - name: Enable ipmi_ plugin on dedicated hardware
   file:
@@ -105,6 +109,7 @@
     - temp
     - power
     - volts
+  when: not ansible_check_mode
 
 - name: adjustments for grsec kernel
   blockinfile:
diff --git a/mysql/tasks/datadir.yml b/mysql/tasks/datadir.yml
index c375f5d5..da4af342 100644
--- a/mysql/tasks/datadir.yml
+++ b/mysql/tasks/datadir.yml
@@ -43,3 +43,4 @@
     - mysql_custom_datadir | length > 0
     - mysql_custom_datadir != mysql_current_real_datadir_test.stdout
     - not mysql_custom_datadir_test.stat.exists
+    - not ansible_check_mode
diff --git a/mysql/tasks/logdir.yml b/mysql/tasks/logdir.yml
index bd6ecab2..1779667a 100644
--- a/mysql/tasks/logdir.yml
+++ b/mysql/tasks/logdir.yml
@@ -43,3 +43,4 @@
     - mysql_custom_logdir | length > 0
     - mysql_custom_logdir != mysql_current_real_logdir_test.stdout
     - not mysql_custom_logdir_test.stat.exists
+    - not ansible_check_mode
diff --git a/mysql/tasks/packages_jessie.yml b/mysql/tasks/packages_jessie.yml
index 652eace7..99c89d8a 100644
--- a/mysql/tasks/packages_jessie.yml
+++ b/mysql/tasks/packages_jessie.yml
@@ -42,6 +42,7 @@
   tags:
   - mysql
   - services
+  when: not ansible_check_mode
 
 - name: apg package is installed
   apt:
diff --git a/mysql/tasks/packages_stretch.yml b/mysql/tasks/packages_stretch.yml
index 880f5050..34e4d2b6 100644
--- a/mysql/tasks/packages_stretch.yml
+++ b/mysql/tasks/packages_stretch.yml
@@ -28,6 +28,7 @@
   tags:
   - mysql
   - services
+  when: not ansible_check_mode
 
 - name: apg package is installed
   apt:
@@ -57,4 +58,4 @@
   tags:
     - mysql
     - packages
-  when: ansible_python_version is version('3', '>=')
\ No newline at end of file
+  when: ansible_python_version is version('3', '>=')
diff --git a/mysql/tasks/utils.yml b/mysql/tasks/utils.yml
index 1ac8f2df..e3fe76da 100644
--- a/mysql/tasks/utils.yml
+++ b/mysql/tasks/utils.yml
@@ -155,7 +155,9 @@
     src: "{{ _mysql_scripts_dir }}/mysql-optimize.sh"
     dest: /etc/cron.{{ mysql_cron_optimize_frequency | mandatory }}/mysql-optimize.sh
     state: link
-  when: mysql_cron_optimize | bool
+  when:
+    - mysql_cron_optimize | bool
+    - not ansible_check_mode
   tags:
     - mysql
 
@@ -248,4 +250,4 @@
     mode: "0755"
     force: no
   tags:
-    - mysql
\ No newline at end of file
+    - mysql
diff --git a/nagios-nrpe/handlers/main.yml b/nagios-nrpe/handlers/main.yml
index 25ab29ad..de27314f 100644
--- a/nagios-nrpe/handlers/main.yml
+++ b/nagios-nrpe/handlers/main.yml
@@ -4,8 +4,10 @@
   service:
     name: nagios-nrpe-server
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart nrpe
   service:
     name: nrpe
     state: restarted
+  when: not ansible_check_mode
diff --git a/ntpd/tasks/main.yml b/ntpd/tasks/main.yml
index 2d66d765..ae4a97c5 100644
--- a/ntpd/tasks/main.yml
+++ b/ntpd/tasks/main.yml
@@ -21,3 +21,4 @@
   notify: restart ntp
   tags:
   - ntp
+  when: not ansible_check_mode
diff --git a/packweb-apache/tasks/apache.yml b/packweb-apache/tasks/apache.yml
index 96c11e3a..c2efd93f 100644
--- a/packweb-apache/tasks/apache.yml
+++ b/packweb-apache/tasks/apache.yml
@@ -14,7 +14,9 @@
     block: |
       # Used for Evoadmin-web
       export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
-  when: envvar_grep_path.rc != 0
+  when:
+    - envvar_grep_path.rc != 0
+    - not ansible_check_mode
 
 - name: Additional packages are installed
   apt:
@@ -34,6 +36,7 @@
     - negotiation
     - alias
     - log_forensic
+  when: not ansible_check_mode
 
 - name: Copy Apache settings for modules
   copy:
@@ -60,3 +63,4 @@
   loop:
     - evolinux-evasive
     - evolinux-modsec
+  when: not ansible_check_mode
diff --git a/packweb-apache/tasks/awstats.yml b/packweb-apache/tasks/awstats.yml
index 5ea0fa57..a423aaf8 100644
--- a/packweb-apache/tasks/awstats.yml
+++ b/packweb-apache/tasks/awstats.yml
@@ -22,6 +22,7 @@
       AllowFullYearView=3
       ErrorMessages="An error occured. Contact your Administrator"
     mode: "0644"
+  when: not ansible_check_mode
 
 - name: Create conf-available/awstats-icon.conf file
   copy:
@@ -39,6 +40,7 @@
   register: command_result
   changed_when: "'Enabling' in command_result.stderr"
   notify: reload apache
+  when: not ansible_check_mode
 
 - name: Create awstats cron
   lineinfile:
@@ -46,6 +48,7 @@
     create: yes
     regexp: '-config=awstats'
     line: "10 */6 * * * root umask 033; [ -x /usr/lib/cgi-bin/awstats.pl -a -f /etc/awstats/awstats.conf -a -r /var/log/apache2/access.log ] && /usr/lib/cgi-bin/awstats.pl -config=awstats -update >/dev/null"
+  when: not ansible_check_mode
 
 - name: Comment default awstat cron's tasks
   lineinfile:
@@ -54,3 +57,4 @@
     line: '#\1'
     backrefs: yes
     state: present
+  when: not ansible_check_mode
diff --git a/packweb-apache/tasks/main.yml b/packweb-apache/tasks/main.yml
index ff3cd9a7..58b2047c 100644
--- a/packweb-apache/tasks/main.yml
+++ b/packweb-apache/tasks/main.yml
@@ -26,6 +26,7 @@
     dest: /var/www/index.html
     line: '            <li><a href="/info.php">Infos PHP</a></li>'
     regexp: "Infos PHP"
+  when: not ansible_check_mode
 
 - name: install opcache.php
   copy:
@@ -38,6 +39,7 @@
     dest: /var/www/index.html
     line: '            <li><a href="/opcache.php">Infos OpCache PHP</a></li>'
     regexp: "Infos OpCache PHP"
+  when: not ansible_check_mode
 
 - name: Add elements to user account template
   file:
@@ -64,6 +66,7 @@
   loop:
     - access.log
     - error.log
+  when: not ansible_check_mode
 
 - name: "Install userlogrotate (jessie)"
   copy:
diff --git a/packweb-apache/tasks/multiphp.yml b/packweb-apache/tasks/multiphp.yml
index 8a7c9613..80a6f34a 100644
--- a/packweb-apache/tasks/multiphp.yml
+++ b/packweb-apache/tasks/multiphp.yml
@@ -5,6 +5,7 @@
     state: present
     name: proxy_fcgi
   notify: restart apache2
+  when: not ansible_check_mode
 
 - include_role:
     name: remount-usr
diff --git a/packweb-apache/tasks/phpmyadmin.yml b/packweb-apache/tasks/phpmyadmin.yml
index f83b0a5d..9e894786 100644
--- a/packweb-apache/tasks/phpmyadmin.yml
+++ b/packweb-apache/tasks/phpmyadmin.yml
@@ -65,10 +65,12 @@
   changed_when: False
   check_mode: no
   register: new_packweb_phpmyadmin_suffix
+  when: not ansible_check_mode
 
 - name: overwrite packweb_phpmyadmin_suffix
   set_fact:
     packweb_phpmyadmin_suffix: "{{ new_packweb_phpmyadmin_suffix.stdout }}"
+  when: not ansible_check_mode
 
 - debug:
     var: packweb_phpmyadmin_suffix
@@ -86,15 +88,18 @@
           Require all denied
           Include /etc/apache2/ipaddr_whitelist.conf
       </Directory>
+  when: not ansible_check_mode
 
 - name: enable phpmyadmin link in default site index
   replace:
     dest: /var/www/index.html
     regexp:  '<!-- <li><a href="/phpmyadmin-__PHPMYADMIN_SUFFIX__/">Accès PhpMyAdmin</a></li> -->'
     replace: '     <li><a href="/phpmyadmin-__PHPMYADMIN_SUFFIX__/">Accès PhpMyAdmin</a></li>'
+  when: not ansible_check_mode
 
 - name: replace phpmyadmin suffix in default site index
   replace:
     dest: /var/www/index.html
     regexp: '__PHPMYADMIN_SUFFIX__'
     replace: "{{ packweb_phpmyadmin_suffix }}"
+  when: not ansible_check_mode
diff --git a/php/handlers/main.yml b/php/handlers/main.yml
index 079a14d5..75fe86ba 100644
--- a/php/handlers/main.yml
+++ b/php/handlers/main.yml
@@ -4,23 +4,28 @@
   service:
     name: php5-fpm
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart php7.0-fpm
   service:
     name: php7.0-fpm
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart php7.3-fpm
   service:
     name: php7.3-fpm
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart php7.4-fpm
   service:
     name: php7.4-fpm
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart php8.1-fpm
   service:
     name: php8.1-fpm
     state: restarted
+  when: not ansible_check_mode
diff --git a/php/tasks/config_cli.yml b/php/tasks/config_cli.yml
index d327690a..e4fac4a7 100644
--- a/php/tasks/config_cli.yml
+++ b/php/tasks/config_cli.yml
@@ -25,6 +25,7 @@
   file:
     dest: "{{ php_cli_custom_ini_file }}"
     mode: "0644"
+  when: not ansible_check_mode
 
 - name: "Set custom values for PHP to enable Symfony"
   ini_file:
@@ -35,4 +36,6 @@
     mode: "0644"
   loop:
     - { option: "date.timezone", value: "Europe/Paris" }
-  when: php_symfony_requirements | bool
+  when:
+    - php_symfony_requirements | bool
+    - not ansible_check_mode
diff --git a/php/tasks/main_bookworm.yml b/php/tasks/main_bookworm.yml
index 4dcde767..49c91719 100644
--- a/php/tasks/main_bookworm.yml
+++ b/php/tasks/main_bookworm.yml
@@ -79,12 +79,14 @@
   with_items:
     - /etc/php
     - /etc/php/{{ php_version }}
+  when: not ansible_check_mode
 
 - include: config_cli.yml
 - name: "Enforce permissions on PHP cli directory (Debian 12)"
   file:
     dest: /etc/php/{{ php_version }}/cli
     mode: "0755"
+  when: not ansible_check_mode
 
 - include: config_fpm.yml
   when: php_fpm_enable
@@ -93,7 +95,9 @@
   file:
     dest: /etc/php/{{ php_version }}/fpm
     mode: "0755"
-  when: php_fpm_enable
+  when:
+    - php_fpm_enable
+    - not ansible_check_mode
 
 - include: config_apache.yml
   when: php_apache_enable
@@ -102,7 +106,9 @@
   file:
     dest: /etc/php/{{ php_version }}/apache2
     mode: "0755"
-  when: php_apache_enable
+  when:
+    - php_apache_enable
+    - not ansible_check_mode
 
 - include: sury_post.yml
   when: php_sury_enable
diff --git a/php/tasks/main_bullseye.yml b/php/tasks/main_bullseye.yml
index 403a7b76..9b1fdf33 100644
--- a/php/tasks/main_bullseye.yml
+++ b/php/tasks/main_bullseye.yml
@@ -68,12 +68,14 @@
   with_items:
     - /etc/php
     - /etc/php/7.4
+  when: not ansible_check_mode
 
 - include: config_cli.yml
 - name: "Enforce permissions on PHP cli directory (Debian 11)"
   file:
     dest: /etc/php/7.4/cli
     mode: "0755"
+  when: not ansible_check_mode
 
 - include: config_fpm.yml
   when: php_fpm_enable
@@ -82,7 +84,9 @@
   file:
     dest: /etc/php/7.4/fpm
     mode: "0755"
-  when: php_fpm_enable
+  when: 
+    - php_fpm_enable
+    - not ansible_check_mode
 
 - include: config_apache.yml
   when: php_apache_enable
@@ -91,7 +95,9 @@
   file:
     dest: /etc/php/7.4/apache2
     mode: "0755"
-  when: php_apache_enable
+  when: 
+    - php_apache_enable
+    - not ansible_check_mode
 
 - include: sury_post.yml
   when: php_sury_enable
diff --git a/php/tasks/main_buster.yml b/php/tasks/main_buster.yml
index 2fc4293e..eff2dc8f 100644
--- a/php/tasks/main_buster.yml
+++ b/php/tasks/main_buster.yml
@@ -68,12 +68,14 @@
   loop:
     - /etc/php
     - /etc/php/7.3
+  when: not ansible_check_mode
 
 - include: config_cli.yml
 - name: "Enforce permissions on PHP cli directory (Debian 10)"
   file:
     dest: /etc/php/7.3/cli
     mode: "0755"
+  when: not ansible_check_mode
 
 - include: config_fpm.yml
   when: php_fpm_enable | bool
@@ -82,7 +84,9 @@
   file:
     dest: /etc/php/7.3/fpm
     mode: "0755"
-  when: php_fpm_enable | bool
+  when:
+    - php_fpm_enable | bool
+    - not ansible_check_mode
 
 - include: config_apache.yml
   when: php_apache_enable | bool
@@ -91,7 +95,9 @@
   file:
     dest: /etc/php/7.3/apache2
     mode: "0755"
-  when: php_apache_enable | bool
+  when:
+    - php_apache_enable | bool
+    - not ansible_check_mode
 
 - include: sury_post.yml
   when: php_sury_enable | bool
diff --git a/php/tasks/main_jessie.yml b/php/tasks/main_jessie.yml
index 75105166..a5aecdb7 100644
--- a/php/tasks/main_jessie.yml
+++ b/php/tasks/main_jessie.yml
@@ -56,6 +56,7 @@
   file:
     dest: /etc/php5
     mode: "0755"
+  when: not ansible_check_mode
 
 - include: config_cli.yml
 
@@ -63,6 +64,7 @@
   file:
     dest: /etc/php5/cli
     mode: "0755"
+  when: not ansible_check_mode
 
 - include: config_fpm.yml
   when: php_fpm_enable | bool
@@ -71,7 +73,9 @@
   file:
     dest: /etc/php5/fpm
     mode: "0755"
-  when: php_fpm_enable | bool
+  when:
+    - php_fpm_enable | bool
+    - not ansible_check_mode
 
 - include: config_apache.yml
   when: php_apache_enable | bool
@@ -80,4 +84,6 @@
   file:
     dest: /etc/php5/apache2
     mode: "0755"
-  when: php_apache_enable | bool
+  when:
+    - php_apache_enable | bool
+    - not ansible_check_mode
diff --git a/php/tasks/main_stretch.yml b/php/tasks/main_stretch.yml
index 698621ac..6934fa6a 100644
--- a/php/tasks/main_stretch.yml
+++ b/php/tasks/main_stretch.yml
@@ -68,6 +68,7 @@
   loop:
     - /etc/php
     - /etc/php/7.0
+  when: not ansible_check_mode
 
 - include: config_cli.yml
 
@@ -75,6 +76,7 @@
   file:
     dest: /etc/php/7.0/cli
     mode: "0755"
+  when: not ansible_check_mode
 
 - include: config_fpm.yml
   when: php_fpm_enable | bool
@@ -83,7 +85,9 @@
   file:
     dest: /etc/php/7.0/fpm
     mode: "0755"
-  when: php_fpm_enable | bool
+  when:
+    - php_fpm_enable | bool
+    - not ansible_check_mode
 
 - include: config_apache.yml
   when: php_apache_enable | bool
@@ -92,7 +96,9 @@
   file:
     dest: /etc/php/7.0/apache2
     mode: "0755"
-  when: php_apache_enable | bool
+  when:
+    - php_apache_enable | bool
+    - not ansible_check_mode
 
 - include: sury_post.yml
   when: php_sury_enable | bool
diff --git a/php/tasks/sury_post.yml b/php/tasks/sury_post.yml
index 4e706889..6855214b 100644
--- a/php/tasks/sury_post.yml
+++ b/php/tasks/sury_post.yml
@@ -14,6 +14,7 @@
   file:
     dest: /etc/php/7.4/cli
     mode: "0755"
+  when: not ansible_check_mode
 
 - name: Symlink Evolix Apache config files from 7.4 to 7.0
   file:
@@ -30,7 +31,9 @@
   file:
     dest: /etc/php/7.4/apache2
     mode: "0755"
-  when: php_apache_enable | bool
+  when:
+    - php_apache_enable | bool
+    - not ansible_check_mode
 
 - name: Symlink Evolix FPM config files from 7.4 to 7.0
   file:
@@ -49,4 +52,6 @@
   file:
     dest: /etc/php/7.4/fpm
     mode: "0755"
-  when: php_fpm_enable | bool
+  when:
+    - php_fpm_enable | bool
+    - not ansible_check_mode
diff --git a/proftpd/handlers/main.yml b/proftpd/handlers/main.yml
index 0914d289..bffa7ede 100644
--- a/proftpd/handlers/main.yml
+++ b/proftpd/handlers/main.yml
@@ -3,3 +3,4 @@
   service:
     name: proftpd
     state: restarted
+  when: not ansible_check_mode
diff --git a/proftpd/tasks/main.yml b/proftpd/tasks/main.yml
index f45958a9..f29fbd81 100644
--- a/proftpd/tasks/main.yml
+++ b/proftpd/tasks/main.yml
@@ -70,6 +70,7 @@
   notify: restart proftpd
   tags:
     - proftpd
+  when: not ansible_check_mode
 
 - name: Put empty vpasswd file if missing
   copy:
@@ -92,6 +93,7 @@
   notify: restart proftpd
   tags:
     - proftpd
+  when: not ansible_check_mode
 
 - include: accounts.yml
   when: proftpd_accounts | length > 0
diff --git a/squid/handlers/main.yml b/squid/handlers/main.yml
index 4f5329b9..675a9dbd 100644
--- a/squid/handlers/main.yml
+++ b/squid/handlers/main.yml
@@ -3,31 +3,38 @@
   service:
     name: munin-node
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart squid
   service:
     name: squid
     state: restarted
+  when: not ansible_check_mode
 
 - name: reload squid
   service:
     name: squid
     state: reloaded
+  when: not ansible_check_mode
 
 - name: restart squid3
   service:
     name: squid3
     state: restarted
+  when: not ansible_check_mode
 
 - name: reload squid3
   service:
     name: squid3
     state: reloaded
+  when: not ansible_check_mode
 
 - name: restart log2mail
   service:
     name: log2mail
     state: restarted
+  when: not ansible_check_mode
 
 - name: restart minifirewall
   command: /etc/init.d/minifirewall restart
+  when: not ansible_check_mode
diff --git a/squid/tasks/main.yml b/squid/tasks/main.yml
index 4a3cab4d..540e56d9 100644
--- a/squid/tasks/main.yml
+++ b/squid/tasks/main.yml
@@ -121,6 +121,7 @@
   when:
     - squid_localproxy_enable | bool
     - ansible_distribution_major_version is version('9', '>=')
+    - not ansible_check_mode
 
 - name: "evolinux custom overrides (Debian 9 or later)"
   copy:
diff --git a/webapps/evoadmin-web/tasks/ftp.yml b/webapps/evoadmin-web/tasks/ftp.yml
index 98f275ff..074b38fb 100644
--- a/webapps/evoadmin-web/tasks/ftp.yml
+++ b/webapps/evoadmin-web/tasks/ftp.yml
@@ -10,3 +10,4 @@
     remote_src: False
     src: ftp/evolinux.conf.diff
     dest: /etc/proftpd/conf.d/z-evolinux.conf
+  when: not ansible_check_mode
diff --git a/webapps/evoadmin-web/tasks/main.yml b/webapps/evoadmin-web/tasks/main.yml
index 1acb2aa5..d9589548 100644
--- a/webapps/evoadmin-web/tasks/main.yml
+++ b/webapps/evoadmin-web/tasks/main.yml
@@ -3,7 +3,9 @@
 - name: "Ensure that evoadmin_contact_email is defined"
   fail:
     msg: Please configure var evoadmin_contact_email
-  when: evoadmin_contact_email is none or evoadmin_contact_email | length == 0
+  when:
+    - evoadmin_contact_email is none or evoadmin_contact_email | length == 0
+    - not ansible_check_mode
 
 - include: packages.yml
 
@@ -23,3 +25,4 @@
     marker: "<!-- {mark} evoadmin-web section -->"
     block: |
       <li><a href="https://{{ evoadmin_host }}">Interface admin web (EvoAdmin-web)</a></li>
+  when: not ansible_check_mode
diff --git a/webapps/evoadmin-web/tasks/ssl.yml b/webapps/evoadmin-web/tasks/ssl.yml
index 6bdf1421..eb7a31cd 100644
--- a/webapps/evoadmin-web/tasks/ssl.yml
+++ b/webapps/evoadmin-web/tasks/ssl.yml
@@ -17,6 +17,7 @@
     owner: root
     group: ssl-cert
     mode: "0640"
+  when: not ansible_check_mode
 
 - name: Create certificate for default site
   command: openssl x509 -req -days 3650 -sha256 -in /etc/ssl/{{ evoadmin_host }}.csr -signkey /etc/ssl/private/{{ evoadmin_host }}.key -out /etc/ssl/certs/{{ evoadmin_host }}.crt
diff --git a/webapps/evoadmin-web/tasks/user.yml b/webapps/evoadmin-web/tasks/user.yml
index bbad1b8f..fa61b830 100644
--- a/webapps/evoadmin-web/tasks/user.yml
+++ b/webapps/evoadmin-web/tasks/user.yml
@@ -54,7 +54,9 @@
     dest: "{{ evoadmin_document_root }}"
     version: jessie
     update: False
-  when: ansible_distribution_release == "jessie"
+  when:
+    - ansible_distribution_release == "jessie"
+    - not ansible_check_mode
 
 - name: "Clone evoadmin repository (Debian 9 or later)"
   git:
@@ -62,7 +64,9 @@
     dest: "{{ evoadmin_document_root }}"
     version: master
     update: False
-  when: ansible_distribution_major_version is version('9', '>=')
+  when:
+    - ansible_distribution_major_version is version('9', '>=')
+    - not ansible_check_mode
 
 - name: Change ownership on git repository
   file: