We have experience with this module in Production and it's a great source of info. Very lightweight.
On Wednesday, November 19, 2014, Pierre-Yves Chibon <pingou@xxxxxxxxxxxx> wrote:
On Wednesday, November 19, 2014, Pierre-Yves Chibon <pingou@xxxxxxxxxxxx> wrote:
On Wed, Nov 19, 2014 at 09:43:58AM -0500, Ralph Bean wrote:
> Hi all-
>
> Memcached has been locking up on us lately. If I remember correctly
> it was Saturday morning, then again Monday morning, and it did it
> again today (which manifested in a badges.fedoraproject.org outage for
> users).
>
> We currently don't have any collectd monitoring directly on memcached.
> Here's an ansible patch that should add it. Since we're in freeze,
> this would need two +1s in order to be able to be applied.
>
> If, for some reason it was broken or hosed up, I could revert it by
> removing the /etc/collectd.d/memcached.conf file on both memcached
> servers and subsequently restarting the memcached daemon.
>
> Patch follows:
>
> From 6535e0344f4db5b0eb00aeb37007c92f471d7224 Mon Sep 17 00:00:00 2001
> From: Ralph Bean <rbean@xxxxxxxxxx>
> Date: Wed, 19 Nov 2014 14:37:50 +0000
> Subject: [PATCH] Add collectd monitoring for the memcached daemon.
>
> ---
> playbooks/groups/memcached.yml | 1 +
> roles/collectd/memcached/files/memcached.conf | 6 ++++++
> roles/collectd/memcached/tasks/main.yml | 8 ++++++++
> 3 files changed, 15 insertions(+), 0 deletions(-)
> create mode 100644 roles/collectd/memcached/files/memcached.conf
> create mode 100644 roles/collectd/memcached/tasks/main.yml
>
> diff --git a/playbooks/groups/memcached.yml b/playbooks/groups/memcached.yml
> index 5fc955b..90d52b0 100644
> --- a/playbooks/groups/memcached.yml
> +++ b/playbooks/groups/memcached.yml
> @@ -31,6 +31,7 @@
> - hosts
> - fas_client
> - collectd/base
> + - collectd/memcached
> - sudo
> - memcached
>
> diff --git a/roles/collectd/memcached/files/memcached.conf b/roles/collectd/memcached/files/memcached.conf
> new file mode 100644
> index 0000000..d59815b
> --- /dev/null
> +++ b/roles/collectd/memcached/files/memcached.conf
> @@ -0,0 +1,6 @@
> +LoadPlugin memcached
> +
> +<Plugin memcached>
> + Host "localhost"
> + Port "11211"
> +</Plugin>
> diff --git a/roles/collectd/memcached/tasks/main.yml b/roles/collectd/memcached/tasks/main.yml
> new file mode 100644
> index 0000000..3023af7
> --- /dev/null
> +++ b/roles/collectd/memcached/tasks/main.yml
> @@ -0,0 +1,8 @@
> +---
> +
> +- name: Copy in the memcached collectd config
> + copy: src="" dest=/etc/collectd.d/memcached.conf
> + tags:
> + - collectd
> + - memcached
> + notify: restart collectd
Looks fine to me and easy to revert in the worst case.
+1
Pierre
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