Add changes to the sysconfig defaults file

These changes mirror systemd tunables for elasticsearch and are needed
to ensure any OS without systemd (like Ubuntu 14.04) has the same
capabilities and OS's with systemd. This also adds a specific sysctl
file to use when making sysctl changes. This will ensure we're not
subjecting our deployment to other changes from other sources, like an
OSA playbook run.

Change-Id: Ic0e0bc0f93a12298c1e2f634cf5a1b4c6be2995e
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

elk_metrics_6x/roles/elastic_dependencies/tasks/main.yml

@@ -60,6 +60,7 @@
     value: "524288"
     state: "present"
     reload: "yes"
+    sysctl_file: /etc/sysctl.d/99-elasticsearch.conf
   delegate_to: "{{ physical_host }}"
   tags:
     - sysctl
@@ -70,6 +71,7 @@
     value: "1048576"
     state: "present"
     reload: "yes"
+    sysctl_file: /etc/sysctl.d/99-elasticsearch.conf
   delegate_to: "{{ physical_host }}"
   tags:
     - sysctl

elk_metrics_6x/roles/elastic_logstash/tasks/main.yml

@@ -62,6 +62,15 @@
   notify:
     - Enable and restart logstash
 
+- name: Set sysconfig service defaults
+  lineinfile:
+    path: "{{ logstash_sysconfig_path }}"
+    regexp: '^{{ item.key }}='
+    line: '{{ item.key }}={{ item.value }}'
+  with_items:
+    - key: LS_OPEN_FILES
+      value: 32768
+
 - name: Drop jvm conf file(s)
   template:
     src: "{{ item.src }}"

elk_metrics_6x/roles/elastic_logstash/vars/redhat.yml

@@ -16,3 +16,5 @@
 logstash_distro_packages:
   - logrotate
   - logstash
+
+logstash_sysconfig_path: /etc/default/logstash

elk_metrics_6x/roles/elastic_logstash/vars/suse.yml

@@ -16,3 +16,5 @@
 logstash_distro_packages:
   - logrotate
   - logstash
+
+logstash_sysconfig_path: /etc/default/logstash

elk_metrics_6x/roles/elastic_logstash/vars/ubuntu.yml

@@ -16,3 +16,5 @@
 logstash_distro_packages:
   - logrotate
   - logstash
+
+logstash_sysconfig_path: /etc/default/logstash

elk_metrics_6x/roles/elasticsearch/tasks/main.yml

@@ -68,6 +68,19 @@
   tags:
     - config
 
+- name: Set sysconfig service defaults
+  lineinfile:
+    path: "{{ elasticsearch_sysconfig_path }}"
+    regexp: '^{{ item.key }}='
+    line: '{{ item.key }}={{ item.value }}'
+  with_items:
+    - key: MAX_OPEN_FILES
+      value: 65536
+    - key: MAX_LOCKED_MEMORY
+      value: unlimited
+    - key: MAX_MAP_COUNT
+      value: 524288
+
 - name: Drop jvm conf file(s)
   template:
     src: "{{ item.src }}"

elk_metrics_6x/roles/elasticsearch/vars/redhat.yml

@@ -16,3 +16,5 @@
 elasticsearch_distro_packages:
   - logrotate
   - elasticsearch
+
+elasticsearch_sysconfig_path: /etc/sysconfig/elasticsearch

elk_metrics_6x/roles/elasticsearch/vars/suse.yml

@@ -16,3 +16,5 @@
 elasticsearch_distro_packages:
   - logrotate
   - elasticsearch
+
+elasticsearch_sysconfig_path: /etc/sysconfig/elasticsearch

elk_metrics_6x/roles/elasticsearch/vars/ubuntu.yml

@@ -16,3 +16,5 @@
 elasticsearch_distro_packages:
   - logrotate
   - elasticsearch
+
+elasticsearch_sysconfig_path: /etc/default/elasticsearch

elk_metrics_6x/tests/functional.yml

@@ -57,6 +57,8 @@
         name: vm.swappiness
         value: 10
         state: present
+        reload: "yes"
+        sysctl_file: /etc/sysctl.d/99-elasticsearch.conf
 
     - name: Flush iptables rules
       command: "{{ item }}"