If you only have three nodes in your data services cluster, you can't evacuate the nodes, because ghe-spokes
doesn’t have another place to make a copy. If you have four or more, ghe-spokes
will move all the repositories off of the evacuated node.
If you're taking a node offline that has any data services (like git, pages, or storage) evacuate each node before taking the node offline.
-
Find the
uuid
of the node in with theghe-config
command.$ ghe-config cluster.HOSTNAME.uuid
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You'll need to monitor the status of your node while the data is being copied. Ideally, the node shouldn't be taken offline until the copying is complete. To monitor the status of your node, run any of the following commands:
For Git
ghe-spokes evac-status
For GitHub Pages
echo "select count(*) from pages_replicas where host = 'pages-server-UUID'" | ghe-dbconsole -y
For storage
ghe-storage evacuation-status
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After the copying is complete, you can evacuate the storage service. Run any of the following commands:
For Git
ghe-spokes server evacuate git-server-UUID \'REASON FOR EVACUATION\'
For GitHub Pages
ghe-dpages evacuate pages-server-UUID
For storage, take the node offline
ghe-storage offline storage-server-UUID
then evacuate
ghe-storage evacuate storage-server-UUID