From af635ff3ff2785440bd86f5eb667bcb7118f79a0 Mon Sep 17 00:00:00 2001 From: Mark Eisenblaetter Date: Fri, 29 Jun 2018 07:51:04 +0200 Subject: [PATCH] [remove-node] add doku for nodeselector --- docs/getting-started.md | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/docs/getting-started.md b/docs/getting-started.md index 2402ac54f..900229964 100644 --- a/docs/getting-started.md +++ b/docs/getting-started.md @@ -51,11 +51,26 @@ Remove nodes You may want to remove **worker** nodes to your existing cluster. This can be done by re-running the `remove-node.yml` playbook. First, all nodes will be drained, then stop some kubernetes services and delete some certificates, and finally execute the kubectl command to delete these nodes. This can be combined with the add node function, This is generally helpful when doing something like autoscaling your clusters. Of course if a node is not working, you can remove the node and install it again. -- Add worker nodes to the list under kube-node if you want to delete them (or utilize a [dynamic inventory](https://docs.ansible.com/ansible/intro_dynamic_inventory.html)). -- Run the ansible-playbook command, substituting `remove-node.yml`: +Add worker nodes to the list under kube-node if you want to delete them (or utilize a [dynamic inventory](https://docs.ansible.com/ansible/intro_dynamic_inventory.html)). + + ansible-playbook -i inventory/mycluster/hosts.ini remove-node.yml -b -v \ + --private-key=~/.ssh/private_key + + +We support two ways to select the nodes: + +- Use `--extra-vars "node=,"` to select the node you want to delete. ``` ansible-playbook -i inventory/mycluster/hosts.ini remove-node.yml -b -v \ - --private-key=~/.ssh/private_key + --private-key=~/.ssh/private_key \ + --extra-vars "node=nodename,nodename2" +``` +or +- Use `--limit nodename,nodename2` to select the node +``` +ansible-playbook -i inventory/mycluster/hosts.ini remove-node.yml -b -v \ + --private-key=~/.ssh/private_key \ + --limit nodename,nodename2" ``` Connecting to Kubernetes