Upgrade the kernel to 3.13.5. Defaults to no. [ci skip]

analytically · analytically · commit 88fce628215b · 2014-03-05T12:01:49.000+01:00
diff --git a/group_vars/all b/group_vars/all
@@ -10,5 +10,8 @@ mtu: 9216
 # mandrill_username: your_username
 # mandrill_api_key: your_api_key
 
+# Upgrade kernel to 3.13, much improved epoll performance
+upgrade_kernel: no
+
 # Choose postgresql or mysql as hive metastore
-hive_metastore: postgresql
+hive_metastore: postgresql
diff --git a/roles/kernel/tasks/main.yml b/roles/kernel/tasks/main.yml
@@ -0,0 +1,28 @@
+---
+# file: roles/kernel/tasks/main.yml
+
+- name: download the latest kernel debian packages
+  get_url: url={{ item }} dest=/tmp
+  with_items:
+    - http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.5-trusty/linux-headers-3.13.5-031305-generic_3.13.5-031305.201402221823_amd64.deb
+    - http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.5-trusty/linux-image-3.13.5-031305-generic_3.13.5-031305.201402221823_amd64.deb
+    - http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.5-trusty/linux-headers-3.13.5-031305_3.13.5-031305.201402221823_all.deb
+  tags: kernel
+
+- name: install the latest kernel
+  command: chdir=/tmp dpkg -i linux-*.deb
+  tags: kernel
+
+- name: reboot after kernel upgrade
+  shell: sleep 2s && /sbin/reboot &
+  tags: kernel
+
+- name: wait for the server to go down (reboot)
+  sudo: false
+  local_action: wait_for host={{ inventory_hostname }} port=22 state=stopped
+  tags: kernel
+
+- name: wait for the server to come up
+  sudo: false
+  local_action: wait_for host={{ inventory_hostname }} port=22 delay=30
+  tags: kernel
diff --git a/site.yml b/site.yml
@@ -10,6 +10,7 @@
   user: ansibler
   sudo: true
   roles:
+    - { role: kernel, when: upgrade_kernel }
     - common
     - { role: postfix_mandrill, when: notify_email is defined and postfix_domain is defined and mandrill_username is defined and mandrill_api_key is defined }
     - ganglia_monitor
