Add lxc-solr role

lxc-solr/README.md

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+# lxc-solr
+  
+Create one or more LXC containers with Solr in the version of your choice.
+
+*note : this role depend on the lxc role.*
+
+## Tasks
+
+Everything is in the `tasks/main.yml` file.
+
+## Available variables
+
+Since this role depend on the lxc role, please refer to it for a full variable list related to the lxc containers setup.
+
+* `lxc_containers`: list of LXC containers to create. Default: `[]` (empty).
+  * `name`: name of the LXC container to create.
+  * `release`: Debian version to install
+  * `solr_version`: Solr version to install *(refer to https://archive.apache.org/dist/lucene/solr/ for a full version list)*
+  * `solr_port`: port for Solr to listen on
+  Eg.:
+  ```
+  lxc_containers:
+    - name: solr8
+      release: stretch
+      solr_version: 6.6.6
+      solr_port: 8983
+   ```

lxc-solr/defaults/main.yml

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+---
+# List of LXC containers to create alongside with the version of Solr to install for each of them
+# Eg.:
+# lxc_containers:
+#   - name: solr6
+#     release: stretch
+#     solr_version: 6.6.6
+#     solr_port: 8983
+#   - name: solr7
+#     release: stretch
+#     solr_version: 7.7.2
+#     solr_port: 8984
+#   - name: solr8
+#     release: stretch
+#     solr_version: 8.1.1
+#     solr_port: 8985
+lxc_containers: []
+

lxc-solr/tasks/main.yml

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+---
+- name: LXC configuration
+  include_role:
+    name: lxc
+
+- include: "solr.yml name={{item.name}} solr_version={{item.solr_version}} solr_port={{item.solr_port}}"
+  with_items:
+    - "{{ lxc_containers }}"

lxc-solr/tasks/solr.yml

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+---
+- name: "Change default ulimit for container {{ name }}"
+  blockinfile:
+    dest: "/var/lib/lxc/{{ name }}/rootfs/root/.bashrc"
+    marker: "# {mark} set ulimit for Solr"
+    block: |
+      ulimit -n 65000
+      ulimit -u 65000
+
+- name: Install openjdk-8-jre-headless package
+  command: "lxc-attach -n {{name}} -- apt-get install -y openjdk-8-jre-headless"
+
+- name: "Download Solr {{ solr_version }}"
+  get_url:
+    url: "https://archive.apache.org/dist/lucene/solr/{{ solr_version }}/solr-{{ solr_version }}.tgz"
+    dest: "/var/lib/lxc/{{ name }}/rootfs/root/solr-{{ solr_version }}.tgz"
+    mode: '0644'
+
+- name: "Extract solr-{{ solr_version }}.tgz"
+  unarchive:
+    src: /var/lib/lxc/{{ name }}/rootfs/root/solr-{{ solr_version }}.tgz
+    dest: /var/lib/lxc/{{ name }}/rootfs/opt/
+    remote_src: yes
+
+- name: Set Solr autostart
+  template:
+    src: rc.local.j2
+    dest: "/var/lib/lxc/{{ name }}//rootfs/etc/rc.local"
+    mode: "0755"
+
+- name: Check if Solr is running
+  command: "lxc-attach -n {{name}} -- /opt/solr-{{ solr_version }}/bin/solr status"
+  ignore_errors: yes
+  changed_when: false
+  register: service_solr_status
+
+- name: "Start Solr {{ solr_version }}"
+  command: "lxc-attach -n {{name}} -- /opt/solr-{{ solr_version }}/bin/solr start -p {{ solr_port }} -force"
+  when: service_solr_status | failed

lxc-solr/templates/rc.local.j2

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+#!/bin/bash
+/opt/solr-{{ solr_version }}/bin/solr start -p {{ solr_port }} -force
+exit 0