Kubernetes management - Revision history

Sst-yde: /* Troubleshooting */

2026-08-13T13:10:55Z

Troubleshooting

@@ Line 451: / Line 451: @@
 openstack coe cluster resize "$cluster" --nodegroup "$node_group" "$node_count"
 </syntaxhighlight>
 = Troubleshooting =

Sst-yde: /* Cluster template - Creation */

2026-08-13T12:25:48Z

Cluster template - Creation

← Older revision		Revision as of 14:25, 13 August 2026
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	openstack coe cluster template create "$cluster_template" \		openstack coe cluster template create "$cluster_template" \
			--master-lb-enabled \
	--coe kubernetes \		--coe kubernetes \
	--image "$image" \		--image "$image" \
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	--master-flavor 'Standard Düdingen c002m0004' \		--master-flavor 'Standard Düdingen c002m0004' \
	--flavor 'Standard Düdingen c002m0004' \		--flavor 'Standard Düdingen c002m0004' \
	--~~master-lb-enabled~~		--labels kube_dashboard_enabled=false
	</syntaxhighlight>		</syntaxhighlight>

Sst-yde: /* Cluster - Scaling */

2026-08-13T11:55:07Z

Cluster - Scaling

← Older revision		Revision as of 13:55, 13 August 2026
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	openstack coe cluster resize "$cluster" "$nodes"		openstack coe cluster resize "$cluster" "$nodes"
	~~</syntaxhighlight>~~

	~~In order to change the number of worker nodes of a specific node group, use the following command:~~
	~~<syntaxhighlight lang="bash">~~
	~~# ID or name of the cluster:~~
	~~cluster=''~~

	~~# The target node group:~~
	~~node_group=default-worker~~

	~~# Number of worker nodes, for example '6':~~
	~~nodes=''~~

	~~openstack coe cluster resize "$cluster" --nodegroup "$node_group" "$nodes"~~
	</syntaxhighlight>		</syntaxhighlight>

Sst-yde: /* Cluster - Scaling */

2026-08-13T11:43:05Z

Cluster - Scaling

← Older revision		Revision as of 13:43, 13 August 2026
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	openstack coe cluster resize "$cluster" "$nodes"		openstack coe cluster resize "$cluster" "$nodes"
			</syntaxhighlight>

			In order to change the number of worker nodes of a specific node group, use the following command:
			<syntaxhighlight lang="bash">
			# ID or name of the cluster:
			cluster=''

			# The target node group:
			node_group=default-worker

			# Number of worker nodes, for example '6':
			nodes=''

			openstack coe cluster resize "$cluster" --nodegroup "$node_group" "$nodes"
	</syntaxhighlight>		</syntaxhighlight>

Sst-yde: /* Troubleshooting */

2026-06-23T08:30:05Z

Troubleshooting

@@ Line 368: / Line 368: @@
 == Cluster - Downgrade ==
 A downgrade of a cluster works the same as an [[#Upgrade | Upgrade]], but you will have to use a cluster template that uses an image with an older Kubernetes version.
 = Troubleshooting =

Sst-yde: /* Node groups */

2026-06-23T08:29:56Z

Node groups

@@ Line 98: / Line 98: @@
 </syntaxhighlight>
 </tabber>
 = Cluster template =

Sst-yde: /* Node groups */

2026-06-23T08:29:19Z

Node groups

← Older revision		Revision as of 10:29, 23 June 2026
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	When creating a cluster, the following two node groups are created by default:		When creating a cluster, the following two node groups are created by default:
	~~<syntaxhighlight lang="bash">~~
	~~openstack coe nodegroup list~~
	~~</syntaxhighlight>~~

	~~Example output:~~
	<syntaxhighlight lang="text">		<syntaxhighlight lang="text">
	+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+		+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+
Line 118:		Line 113:

	The node group <code>default-master</code> is used for Kubernetes control plane nodes and <code>default-worker</code> for Kubernetes worker nodes.		The node group <code>default-master</code> is used for Kubernetes control plane nodes and <code>default-worker</code> for Kubernetes worker nodes.

	'''Note:''' when creating a new node group, you must use the flavor name and not the flavor ID, even though the column in the output of <code>openstack coe nodegroup list</code> is named <code>flavor_id</code>.

	== Node groups - List ==		== Node groups - List ==
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	node_group_name=''		node_group_name=''

	# Desired flavor, e.g. 'Standard Düdingen c004m0016'		# Desired flavor name (not ID), e.g. 'Standard Düdingen c004m0016'
	flavor=''		flavor=''

Sst-yde: /* Node groups - Creation */

2026-06-23T08:28:26Z

Node groups - Creation

← Older revision		Revision as of 10:28, 23 June 2026
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	cluster=''		cluster=''

	# Name fo the new node group		# Name of the new node group
	~~nodegroup_name~~=''		node_group_name=''

	# Desired flavor, e.g. 'Standard Düdingen c004m0016'		# Desired flavor, e.g. 'Standard Düdingen c004m0016'
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	node_count=1		node_count=1

	openstack coe nodegroup create "$cluster" "$~~nodegroup_name~~" --flavor "$flavor" --node-count "$node_count"		openstack coe nodegroup create "$cluster" "$node_group_name" --flavor "$flavor" --node-count "$node_count"
	</syntaxhighlight>		</syntaxhighlight>

			== Node groups - Deletion ==
			To delete an existing node group, use the following command:
			<syntaxhighlight lang="bash">
			# Cluster name or ID
			cluster=''

			# Name of the node group to delete
			node_group_name=''

			openstack coe nodegroup delete "$cluster" "$node_group"
			</syntaxhighlight>

			'''Note:''' the default node groups <code>default-master</code> and <code>default-worker</code> cannot be deleted.

	== Node groups - Scaling ==		== Node groups - Scaling ==

Sst-yde: /* Node groups */

2026-06-23T08:18:16Z

Node groups

← Older revision		Revision as of 10:18, 23 June 2026
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	'''Note:''' when creating a new node group, you must use the flavor name and not the flavor ID, even though the column in the output of <code>openstack coe nodegroup list</code> is named <code>flavor_id</code>.		'''Note:''' when creating a new node group, you must use the flavor name and not the flavor ID, even though the column in the output of <code>openstack coe nodegroup list</code> is named <code>flavor_id</code>.

			== Node groups - List ==
			To list existing node groups, use the following command:
			<syntaxhighlight lang="bash">
			# Cluster name or ID
			cluster=''

			openstack coe nodegroup list "$cluster"
			</syntaxhighlight>

			Example output:
			<syntaxhighlight lang="text">
			+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+
			\| uuid \| name \| flavor_id \| image_id \| node_count \| status \| role \|
			+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+
			\| 39244c46-410c-4433-a305-cf382b75ed7f \| default-master \| Standard Düdingen c002m0004 \| b00206ec-fb4f-46f2-8046-b0c0b79e8aea \| 1 \| CREATE_COMPLETE \| master \|
			\| 123edba7-c4d8-4d46-a1d6-0712a8099ecc \| default-worker \| Standard Düdingen c004m0015 \| b00206ec-fb4f-46f2-8046-b0c0b79e8aea \| 0 \| UPDATE_COMPLETE \| worker \|
			\| 2c49f417-42b8-49f7-9a97-3f4fc316bb5c \| worker \| Standard Düdingen c004m0016 \| b00206ec-fb4f-46f2-8046-b0c0b79e8aea \| 2 \| CREATE_COMPLETE \| worker \|
			+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+
			</syntaxhighlight>

			== Node groups - Creation ==
			To create a new node group, use the following command:
			<syntaxhighlight lang="bash">
			# Cluster name or ID
			cluster=''

			# Name fo the new node group
			nodegroup_name=''

			# Desired flavor, e.g. 'Standard Düdingen c004m0016'
			flavor=''

			# Worker node count
			node_count=1

			openstack coe nodegroup create "$cluster" "$nodegroup_name" --flavor "$flavor" --node-count "$node_count"
			</syntaxhighlight>

			== Node groups - Scaling ==
			To change the number of nodes of a specific node group, use the following command:
			<syntaxhighlight lang="bash">
			# Cluster name or ID
			cluster=''

			# Node group name or ID
			node_group=''

			# Desired node count
			node_count=1

			openstack coe cluster resize "$cluster" --nodegroup "$node_group" "$node_count"
			</syntaxhighlight>

	= Cluster template =		= Cluster template =

Sst-yde: /* Node groups */

2026-06-23T08:11:36Z

Node groups

← Older revision		Revision as of 10:11, 23 June 2026
Line 102:		Line 102:
	Node groups are used to create Kubernetes nodes with different properties (for example flavors).		Node groups are used to create Kubernetes nodes with different properties (for example flavors).

	When creating a cluster, the following two node groups are created by default ~~(see~~ <~~code~~>openstack coe nodegroup list</~~code~~>):		When creating a cluster, the following two node groups are created by default:
			<syntaxhighlight lang="bash">
			openstack coe nodegroup list
			</syntaxhighlight>

			Example output:
	<syntaxhighlight lang="text">		<syntaxhighlight lang="text">
	+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+		+--------------------------------------+----------------+-----------------------------+--------------------------------------+------------+-----------------+--------+