logstash: add condition to whether or not install java.

ansible-role-logstash/defaults/main.yml

@@ -12,3 +12,5 @@ logstash_ssl: false
 logstash_ssl_dir: /etc/pki/logstash
 logstash_ssl_certificate_file: ""
 logstash_ssl_key_file: ""
+
+logstash_install_java: yes

ansible-role-logstash/tasks/Debian.yml

@@ -10,19 +10,21 @@
     repo: 'ppa:webupd8team/java'
     codename: 'xenial'
 
-- name: Debian/Ubuntu | Accept Oracle Java 8 license
-  debconf:
-    name: oracle-java8-installer
-    question: shared/accepted-oracle-license-v1-1
-    value: true
-    vtype: boolean
+- when: logstash_install_java
+  block:
+    - name: Debian/Ubuntu | Accept Oracle Java 8 license
+      debconf:
+        name: oracle-java8-installer
+        question: shared/accepted-oracle-license-v1-1
+        value: true
+        vtype: boolean
 
-- name: Debian/Ubuntu | Oracle Java 8 installer
-  apt:
-    name: oracle-java8-installer
-    update_cache: yes
-    state: present
-  tags: install
+    - name: Debian/Ubuntu | Oracle Java 8 installer
+      apt:
+        name: oracle-java8-installer
+        update_cache: yes
+        state: present
+      tags: install
 
 - name: Debian/Ubuntu | Add Elasticsearch GPG key
   apt_key:

ansible-role-logstash/tasks/RedHat.yml

@@ -1,16 +1,18 @@
 ---
-- name: RedHat/CentOS/Fedora | download Oracle Java RPM
-  get_url:
-    url: http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jre-8u161-linux-x64.rpm
-    dest: /tmp/jdk-8-linux-x64.rpm
-    headers: 'Cookie:oraclelicense=accept-securebackup-cookie'
-  register: oracle_java_task_rpm_download
+- when: logstash_install_java
+  block:
+    - name: RedHat/CentOS/Fedora | download Oracle Java RPM
+      get_url:
+        url: http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jre-8u161-linux-x64.rpm
+        dest: /tmp/jdk-8-linux-x64.rpm
+        headers: 'Cookie:oraclelicense=accept-securebackup-cookie'
+      register: oracle_java_task_rpm_download
 
-- name: RedHat/CentOS/Fedora | Install Oracle Java RPM
-  package: name=/tmp/jdk-8-linux-x64.rpm state=present
-  when: oracle_java_task_rpm_download is defined
-  register: oracle_java_task_rpm_installed
-  tags: install
+    - name: RedHat/CentOS/Fedora | Install Oracle Java RPM
+      package: name=/tmp/jdk-8-linux-x64.rpm state=present
+      when: oracle_java_task_rpm_download is defined
+      register: oracle_java_task_rpm_installed
+      tags: install
 
 - name: RedHat/CentOS/Fedora | Install Logstash repo
   yum_repository:
@@ -22,7 +24,7 @@
 
 - name: RedHat/CentOS/Fedora | Install Logstash
   package: name=logstash-{{ elastic_stack_version }} state=present
-  when: oracle_java_task_rpm_installed is defined
+  when: not logstash_install_java or oracle_java_task_rpm_installed is defined
   tags: install
 
 - name: RedHat/CentOS/Fedora | Checking if wazuh-manager is installed