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@@ -39,32 +39,24 @@ $ <kubernetes>/cluster/kube-up.sh
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where `<kubernetes>` is the path to your Kubernetes installation.
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## Create and format two persistent disks
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## Create two persistent disks
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For this WordPress installation, we're going to configure our Kubernetes [pods](https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/pods.md) to use [persistent disks](https://cloud.google.com/compute/docs/disks). This means that we can preserve installation state across pod shutdown and re-startup.
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Before doing anything else, we'll create and format the persistent disks that we'll use for the installation: one for the mysql pod, and one for the wordpress pod.
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Before doing anything else, we'll create the persistent disks that we'll use for the installation: one for the mysql pod, and one for the wordpress pod.
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The general series of steps required is as described [here](https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/volumes.md), where $ZONE is the zone where your cluster is running, and $DISK_SIZE is specified as, e.g. '500GB'. In future, this process will be more streamlined.
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So for the two disks used in this example, do the following.
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First create and format the mysql disk, setting the disk size to meet your needs:
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First create the mysql disk, setting the disk size to meet your needs:
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```shell
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gcloud compute disks create --size=$DISK_SIZE --zone=$ZONE mysql-disk
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gcloud compute instances attach-disk --zone=$ZONE --disk=mysql-disk --device-name temp-data kubernetes-master
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gcloud compute ssh --zone=$ZONE kubernetes-master \
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--command "sudo mkdir -p /mnt/tmp && sudo /usr/share/google/safe_format_and_mount /dev/disk/by-id/google-temp-data /mnt/tmp"
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gcloud compute instances detach-disk --zone=$ZONE --disk mysql-disk kubernetes-master
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```
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Then create and format the wordpress disk. Note that you may not want as large a disk size for the wordpress code as for the mysql disk.
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Then create the wordpress disk. Note that you may not want as large a disk size for the wordpress code as for the mysql disk.
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```shell
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gcloud compute disks create --size=$DISK_SIZE --zone=$ZONE wordpress-disk
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gcloud compute instances attach-disk --zone=$ZONE --disk=$wordpress-disk --device-name temp-data kubernetes-master
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gcloud compute ssh --zone=$ZONE kubernetes-master \
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--command "sudo mkdir -p /mnt/tmp && sudo /usr/share/google/safe_format_and_mount /dev/disk/by-id/google-temp-data /mnt/tmp"
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gcloud compute instances detach-disk --zone=$ZONE --disk wordpress-disk kubernetes-master
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```
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## Start the Mysql Pod and Service
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@@ -102,7 +94,7 @@ desiredState:
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- name: mysql-persistent-storage
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source:
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persistentDisk:
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# This GCE PD must already exist and be formatted ext4
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# This GCE PD must already exist
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pdName: mysql-disk
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fsType: ext4
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labels:
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@@ -207,7 +199,7 @@ desiredState:
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source:
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# emptyDir: {}
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persistentDisk:
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# This GCE PD must already exist and be formatted ext4
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# This GCE PD must already exist
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pdName: wordpress-disk
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fsType: ext4
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labels:
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Brendan Burns