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authorSylvain Desbureaux <sylvain.desbureaux@orange.com>2019-09-02 15:50:28 +0200
committerSylvain Desbureaux <sylvain.desbureaux@orange.com>2019-09-02 15:50:28 +0200
commit71a9fb3f79b184c186711340c87eea3e54e9117d (patch)
treef4823a1a4936a25e9885753832f61366fadcfeb2
parentcf745061a8c5bc2e0a9f9d99b2109295f3751198 (diff)
Move SDC Storage to RWO
Today when deploying SDC with OOM, the PersistentVolumeClaim needs the "ReadWriteMany" (or "RWX") capability. According to Kubernetes Documentation (https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes), ReadWriteMany stands for "the volume can be mounted as read-write by many nodes". That means that a particular PVC needs to be read and written from many pods. That also means that your code takes that into account and do the work to avoid write at the same place at the same time. An issue on RWX mode is that most "official" storage driver from Kubernetes doesn't support it (13 over the 19 drivers doesn't support it, espacially OpenStack, Amazon and Google storage classes). SDC PVC for ES is used only for one POD. Thus we don't need RWX. The other values are not used as of today but changing them to RWO seems better if they're reused again Change-Id: I3dabbce120a14d19499330b51e808c5725588e0c Issue-ID: SDC-2549 Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
-rw-r--r--kubernetes/sdc/charts/sdc-cs/values.yaml2
-rw-r--r--kubernetes/sdc/charts/sdc-es/values.yaml2
-rw-r--r--kubernetes/sdc/charts/sdc-onboarding-be/values.yaml2
3 files changed, 3 insertions, 3 deletions
diff --git a/kubernetes/sdc/charts/sdc-cs/values.yaml b/kubernetes/sdc/charts/sdc-cs/values.yaml
index 49e5ac05f6..fdad3fe16a 100644
--- a/kubernetes/sdc/charts/sdc-cs/values.yaml
+++ b/kubernetes/sdc/charts/sdc-cs/values.yaml
@@ -85,7 +85,7 @@ persistence:
## GKE, AWS & OpenStack)
##
# storageClass: "-"
- accessMode: ReadWriteMany
+ accessMode: ReadWriteOnce
size: 2Gi
mountPath: /dockerdata-nfs
mountSubPath: /sdc/sdc-cs/CS
diff --git a/kubernetes/sdc/charts/sdc-es/values.yaml b/kubernetes/sdc/charts/sdc-es/values.yaml
index 4c0a6cc768..31386333fb 100644
--- a/kubernetes/sdc/charts/sdc-es/values.yaml
+++ b/kubernetes/sdc/charts/sdc-es/values.yaml
@@ -89,7 +89,7 @@ persistence:
## GKE, AWS & OpenStack)
##
# storageClass: "-"
- accessMode: ReadWriteMany
+ accessMode: ReadWriteOnce
size: 2Gi
mountPath: /dockerdata-nfs
mountSubPath: /sdc/sdc-es/ES
diff --git a/kubernetes/sdc/charts/sdc-onboarding-be/values.yaml b/kubernetes/sdc/charts/sdc-onboarding-be/values.yaml
index 32b8cdb18d..c6c1e82e77 100644
--- a/kubernetes/sdc/charts/sdc-onboarding-be/values.yaml
+++ b/kubernetes/sdc/charts/sdc-onboarding-be/values.yaml
@@ -85,7 +85,7 @@ persistence:
## GKE, AWS & OpenStack)
##
# storageClass: "-"
- accessMode: ReadWriteMany
+ accessMode: ReadWriteOnce
size: 2Gi
mountPath: /dockerdata-nfs
mountSubPath: /sdc/sdc-cs/CS