From 98fb18c0636ee416ec84392a976201d6edf1d7b3 Mon Sep 17 00:00:00 2001
From: David Hoese <david.hoese@ssec.wisc.edu>
Date: Wed, 22 Jul 2020 11:47:46 -0500
Subject: [PATCH] Update GRB processing to hopefully reuse PVC if it exists
---
.gitlab-ci.yml | 9 +++++++--
admin/README.md | 24 ++++++++++++++++++++++++
2 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0402050..97b019a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -167,11 +167,16 @@ deploy_g16_grb:
- kubeconfig=$(basename $kubekorner_k3s_config)
- echo "Deploying version $docker_tag to cluster namespace $ns"
- pvc=$(kubectl --kubeconfig $kubeconfig get pvc --namespace $ns cspp-geo-grb -o jsonpath="{.metadata.name}" || echo "");
- - echo $pvc
+ - if [ "$pvc" != "" ]; then
+ EXTRA_ARGS="--set persistence.existingClaim=$pvc";
+ else
+ EXTRA_ARGS="--set persistence.enabled=true";
+ fi
+ - echo $EXTRA_ARGS
# copy extra values files to the local directory (where helm has access via docker mount)
- cp ../../production/values-grb-g16.yaml .
# namespace names are the same as domain names
- - helm upgrade -v 2 --install --kubeconfig $kubeconfig --namespace $ns --set persistence.enabled=true --set persistence.storageClass=longhorn -f values-grb-g16.yaml cspp-geo-grb cspp-geo-grb/
+ - helm upgrade -v 2 --install --kubeconfig $kubeconfig --namespace $ns $EXTRA_ARGS --set persistence.storageClass=longhorn -f values-grb-g16.yaml cspp-geo-grb cspp-geo-grb/
dependencies:
- get_chart_grb
rules:
diff --git a/admin/README.md b/admin/README.md
index 16253d8..849ceca 100644
--- a/admin/README.md
+++ b/admin/README.md
@@ -111,11 +111,35 @@ Follow the official longhorn installation instructions:
https://longhorn.io/docs/1.0.0/deploy/install/install-with-helm/
+Unless newer versions no longer require it, on kubekorner we needed to install
+and enable a iscsi daemon:
+
+```bash
+yum install iscsi-initiator-utils
+systemctl enable iscsid
+systemctl start iscsid
+```
+
If you have a particular mount on the cluster nodes that has more space than
the default `/var` path, you may want to customize this setting. For longhorn
1.0 you can do this by adding `--set defaultSettings.defaultDataPath=/data` to
your helm install command.
+Additionally, if your cluster only has 1 or 2 nodes you may want to change the
+default number of replica volumes longhorn attempts to create. Otherwise, by
+default, longhorn's "hard affinity" will stop volumes from being created since
+it can't make all of the replicas (only one replica per node).
+
+At the time of writing, kubekorner has had its longhorn instance installed with:
+
+```bash
+helm install longhorn ./chart/ --namespace longhorn-system --set defaultSettings.defaultReplicaCount=1 --set persistence.defaultClassReplicaCount=1 --set ingress.enabled=true --set ingress.host="kubekorner.ssec.wisc.edu" --set defaultSettings.defaultDataPath="/data"
+```
+
+From the webUI or following longhorn's current instructions we can change most
+if not all of these settings. If a cluster with one node has more nodes added
+on in the future you may want to consider increasing the replicate count.
+
### Storage - Local Large Cache
**DEPRECATED**: See local path provisioner above.
--
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