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| author |   Rajamohan Raj <rajamohan.raj@intel.com> | 2019-07-19 22:32:58 +0000 |
|---|---|---|
| committer | Rajamohan Raj <rajamohan.raj@intel.com> | 2019-07-19 22:36:59 +0000 |
| commit | 18909c10d00e4591f931475a1082edb209b66071 (patch) | |
| tree | b37273cf9aa20e0ad4d32b55b465cd3757cb6d54 /vnfs/DAaaS/deploy/training-core | |
| parent | 779fd6928d724de3731d36f92af04e904ed25693 (diff) | |
Adding few troubleshooting guidelines for HDFS.
Issue-ID: ONAPARC-391
Change-Id: Ic4cd3376aa668b46da1890a09aaf3f461a04e254
Signed-off-by: Rajamohan Raj <rajamohan.raj@intel.com>
Diffstat (limited to 'vnfs/DAaaS/deploy/training-core')
| -rw-r--r-- | vnfs/DAaaS/deploy/training-core/charts/kubernetes-HDFS/README.md | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/vnfs/DAaaS/deploy/training-core/charts/kubernetes-HDFS/README.md b/vnfs/DAaaS/deploy/training-core/charts/kubernetes-HDFS/README.md index ca694a19..fcef4fa1 100644 --- a/vnfs/DAaaS/deploy/training-core/charts/kubernetes-HDFS/README.md +++ b/vnfs/DAaaS/deploy/training-core/charts/kubernetes-HDFS/README.md @@ -10,3 +10,58 @@ See [charts/README.md](charts/README.md) for how to run the charts. See [tests/README.md](tests/README.md) for how to run integration tests for HDFS on Kubernetes. + + +# Troubleshooting + +In case some pods are in pending state, check by using kubectl describe command. +If describe shows : +``` + Type Reason Age From Message + ---- ------ ---- ---- ------- + Warning FailedScheduling 7s (x20 over 66s) default-scheduler pod has unbound immediate PersistentVolumeClaims (repeated 3 times) +``` + +Then make sure you have the storage provisioner up and running. +In our case, its rook that we support. +So, rook should be up and be the default storage proviosner. + +``` +NAME PROVISIONER AGE +rook-ceph-block (default) ceph.rook.io/block 132m +``` + +Delete all the previous unbound PVCs like below : +``` +NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE +data-hdfs1-zookeeper-0 Pending 108m +editdir-hdfs1-journalnode-0 Pending 108m +metadatadir-hdfs1-namenode-0 Pending 108m +``` + +``` +kubectl delete pvc/data-hdfs1-zookeeper-0 +kubectl delete pvc/editdir-hdfs1-journalnode-0 +kubectl delete pvc/metadatadir-hdfs1-namenode-0 +``` + +#### If the dataNode restarts with the error: +``` +19/07/19 21:22:55 FATAL datanode.DataNode: Initialization failed for Block pool <registering> (Datanode Uuid unassigned) service to hdfs1-namenode-1.hdfs1-namenode.hdfs1.svc.cluster.local/XXX.YY.ZZ.KK:8020. Exiting. +java.io.IOException: All specified directories are failed to load. + at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:478) + at org.apache.hadoop.hdfs.server.datanode.DataNode.initStorage(DataNode.java:1358) + at org.apache.hadoop.hdfs.server.datanode.DataNode.initBlockPool(DataNode.java:1323) + at org.apache.hadoop.hdfs.server.datanode.BPOfferService.verifyAndSetNamespaceInfo(BPOfferService.java:317) + at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:223) + at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:802) +``` + +* SOLUTION: Make sure that whatever host path you set for the dataNode is deleted and doesnt exist before you run the hdfs helm chart. +``` + - name: hdfs-data-0 + hostPath: + path: /hdfs-data +``` +In case you are reinstalling the HDFS, delete the host path : /hdfs-data +before you proceed or else the above error shall come.
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