All,
I'm getting errors while installing CDSW in my cluster.
Below is the output of cdsw validate command.
[centos@cdsw ~]$ sudo cdsw validate
[Validating host configuration]
> Prechecking OS Version........[OK]
> Prechecking kernel Version........[OK]
> Prechecking that SELinux is disabled........[OK]
> Prechecking scaling limits for processes........[OK]
> Prechecking scaling limits for open files........
WARNING: Cloudera Data Science Workbench recommends that all users have a max-open-files limit set to 1048576.
It is currently set to [1024] as per 'ulimit -n'
Press enter to continue
> Loading kernel module [ip_tables]...
> Loading kernel module [iptable_nat]...
> Loading kernel module [iptable_filter]...
> Prechecking that iptables are not configured........
WARNING: Cloudera Data Science Workbench requires iptables, but does not support preexisting iptables rules. Press enter to continue
> Prechecking kernel parameters........[OK]
> Prechecking to ensure kernel memory accounting disabled:........[OK]
> Prechecking Java distribution and version........[OK]
> Checking unlimited Java encryption policy for AES........[OK]
> Prechecking size of root volume........[OK]
[Validating networking setup]
> Checking if kubelet iptables rules exist
The following chains are missing from iptables: [KUBE-EXTERNAL-SERVICES, WEAVE-NPC-EGRESS, WEAVE-NPC, WEAVE-NPC-EGRESS-ACCEPT, KUBE-SERVICES, WEAVE-NPC-INGRESS, WEAVE-NPC-EGRESS-DEFAULT, WEAVE-NPC-DEFAULT, WEAVE-NPC-EGRESS-CUSTOM, KUBE-FIREWALL]
WARNING:: Verification of iptables rules failed: 1
> Checking if DNS server is running on localhost
> Checking the number of DNS servers in resolv.conf
> Checking DNS entries for CDSW main domain
WARNING:: DNS doesn't resolve cdsw.company.fr to cdsw.company.fr; DNS is not configured properly: 1
> Checking reverse DNS entries for CDSW main domain
WARNING:: DNS doesn't resolve cdsw.company.fr to cdsw.company.fr; DNS is not configured properly: 1
> Checking DNS entries for CDSW wildcard domain
WARNING:: DNS doesn't resolve *.cdsw.company.fr to cdsw.company.fr; DNS is not configured properly: 1
> Checking that firewalld is disabled
[Validating Kubernetes versions]
> Checking kubernetes client version
> Checking kubernetes server version
WARNING:: Kubernetes server is not running, version couldn't be checked.: 1
[Validating NFS and Application Block Device setup]
> Checking if nfs or nfs-server is active and enabled
> Checking if rpcbind.socket is active and enabled
> Checking if rpcbind.service is active and enabled
> Checking if the project folder is exported over nfs
WARNING:: The projects folder /var/lib/cdsw/current/projects must be exported over nfs: 1
> Checking if application mountpoint exists
> Checking if the application directory is on a separate block device
WARNING:: The application directory is mounted on the root device.: 1
> Checking the root directory (/) free space
> Checking the application directory (/var/lib/cdsw) free space
[Validating Kubernetes cluster state]
> Checking if we have exactly one master node
WARNING:: There must be exactly one Kubernetes node labelled 'stateful=true': 1
> Checking if the Kubernetes nodes are ready
> Checking kube-apiserver pod
WARNING: Unable to reach k8s pod kube-apiserver.
WARNING: [kube-apiserver] pod(s) are not ready under kube-system namespace.
WARNING: Unable to bring up kube-apiserver in the kube-system cluster. Skipping other checks..
[Validating CDSW application]
> Checking connectivity over ingress
WARNING:: Could not curl the application over the ingress controller: 7
--------------------------------------------------------------------------
Errors detected.
Please review the issues listed above. Further details can be collected by
capturing logs from all nodes using "cdsw logs".
------------------------------------------------------------------------------------------------------------------------------
Error 1) "DNS is unable to resolve the hostname": i have the following details in the /etc/hosts file (sorry if i've missed something elementary here):
[centos@cdsw ~]$ sudo cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.40.3 master.company.fr master
172.16.40.4 worker1.company.fr worker1
172.16.40.5 worker2.company.fr worker2
172.16.40.6 worker3.company.fr worker3
172.16.40.7 cdsw.company.fr cdws
172.16.40.7 *.cdsw.company.fr
Error 2) "Unable to reach k8s pod kube-apiserver"
Does anyone know what is causing this issue?
Many thanks,
