CSE Server Management

Overview

This page contains procedures to install and manage Container Service Extension (CSE) on VMware Cloud Director (VCD). Users who perform these procedures are termed as Cloud Administrators, they must have at least the role of CSE Service Role (if the role is not present then the user need to have sysadmin access) and a solid understanding of VCD server management.

Procedures on this page make regular use of vcd-cli commands to perform administrative operations. If necessary, please refer to the vcd-cli documentation to familiarize yourself with vcd-cli.

Server Setup

Installing CSE Server

CSE Server should be installed by the Cloud Administrator on a new VM or one of the existing servers that are part of VCD installation. This CSE VM is the CSE appliance.

The CSE appliance requires network access to the VCD cell, vCenter(s), and AMQP server. It does not require access to the network(s) that powers the org VDC where the Kubernetes templates will be created nor the tenant network(s) that powers that org VDC where the clusters will be deployed. Please find more details on the VCD prerequisites for CSE installation here.

The CSE software should be installed on the CSE appliance as described here.

Next, CSE server setup should be invoked via the cse install command. The example below shows a typical invocation.

cse install -c config.yaml

Please find more details on how to generate sample config file and populate it correctly, here.

The following diagram illustrates installation steps visually.

cse-install When CSE 3.1 is connected to Cloud Director 10.3, CSE installation command cse install -c config.yaml performs below steps.

  1. Prepares the environment for Providers to be able to perform organization virtual datacenter enablement for native clusters. Refer how to enable ovdc(s) for native deployments for more details on how CSE 3.0 leverages placement policies to restrict k8 deployments on organizational virtual datacenters (ovdcs).
  2. Registers defined entity schema 2.0.0 and relevant behaviors for native clusters. As a side effect, cse:native cluster entitlement right bundle gets created in the Cloud Director and all native cluster operations are guarded by these rights. Invoke below API to get a detailed view of native defined entity schema - https://<vcd-ip>/cloudapi/2.0.0/entityTypes/urn:vcloud:type:cse:nativeCluster:2.0.0
  3. Registers CSE as an API extension to VCD.

The cse install command supports the following options:

Option Short Argument(s) Description Default Value Notes
--config -c path to config file Filepath of CSE config file to use for installation config.yaml  
--pks-config-file -p path to Enterprise PKS config file Filepath of Enterprise PKS config file to use for installation -  
--retain-temp-vapp -d n/a Retain the temporary vApp after the template has been captured –ssh-key option is required if this flag is used False Removed in CSE 3.1.2
--skip-config-decryption -s n/a Skips decrypting the configuration file and pks configuration file, and assumes them to be plain text -  
--skip-template-creation -t n/a Skips creating CSE k8s template during installation False Removed in CSE 3.1.2
--ssh-key -k path to public ssh key file ssh-key file to use for VM access (root password ssh access is disabled for security reasons) - Removed in CSE 3.1.2

For CSE 3.1.0 and CSE 3.1.1, during template creation, to monitor the vApp customization process, we can ssh into the temporary vApp. In the temporary vApp, the output of the customization script is captured in /tmp/FILENAME.out as well as /tmp/FILENAME.err:

# print out file contents as it's being written to
tail -f /tmp/FILENAME.out
tail -f /tmp/FILENAME.err

CSE 3.1 Upgrade Command

The command cse upgrade must be run to ensure the environment is forward compatible with CSE 3.1. Few or all of the below steps will be performed based on the VCD version CSE 3.1 is configured with.

CSE 3.1.2 can be upgraded from 3.1.0, 3.1.1 or 3.0.X. CSE 3.1.1 can be upgraded from 3.1.0 or 3.0.X. CSE 3.1.0 can only be upgraded from 3.0.X. Below are the few valid upgrade paths and the resultant changes in the environment.

An example on reading below upgrade paths - CSE 3.0.X, VCD 10.2 (api_version=34.0) -> CSE 3.1, VCD 10.2 (legacy_mode=true): Environment with CSE 3.0.X, configured with VCD 10.2, running at the specified api_version=34.0 (config.yaml) can be upgraded to environment CSE 3.1, configured with VCD 10.2, running with legacy_mode set to true.

  1. CSE 3.0.X, VCD 10.1 (api_version=34.0) -> CSE 3.1, VCD 10.1 (legacy_mode=true)
    • Native clusters will remain regular vApps with Kubernetes specific metadata.
    • Existing Kubernetes templates will not work as-is. Either templates should be recreated, or the workaround should be applied.
  2. CSE 3.0.X, VCD 10.2 (api_version=34.0) -> CSE 3.1, VCD 10.2 (legacy_mode=false)
    • Native clusters will have a new representation in the form of RDE urn:vcloud:type:cse:nativeCluster:1.0.0 entities.
  3. CSE 3.0.X, VCD 10.2 (api_version=34.0) -> CSE 3.1, VCD 10.3 (legacy_mode=false)
    • Native clusters will have a new representation in the form of RDE urn:vcloud:type:cse:nativeCluster:2.0.0 entities.
  4. CSE 3.0.X, VCD 10.2 (api_version=35.0) -> CSE 3.1, VCD 10.3 (legacy_mode=false)
    • Native clusters will be updated froms urn:vcloud:type:cse:nativeCluster:1.0.0 to urn:vcloud:type:cse:nativeCluster:2.0.0 entities.

Note the below recommendation when the target combination is CSE 3.1 (legacy_mode=false):

Note for CSE 3.1.3: Because CSE 3.1.3 uses RDE 2.1, the above holds true, except that
`urn:vcloud:type:cse:nativeCluster:2.1.0` instead of `urn:vcloud:type:cse:nativeCluster:2.0.0` will be used,
and RDE 1.0 clusters will be upgraded to use RDE 2.1.

Validate CSE Installation

To validate that CSE server has been installed correctly, use the command cse check.

cse check config.yaml --check-install

The validity and integrity of just the CSE config file can be checked using the following command.

cse check config.yaml
cse check config.yaml --pks-config-file pks.yaml

The cse check command supports the following options:

Option Short Argument(s) Description Default
--check-install -i n/a Check CSE installation on VCD False
--pks-config-file -p path to Enterprise PKS config file Enterprise PKS config file to validate along with CSE config file -
--skip-config-decryption -s n/a Skips decrypting the configuration file and PKS configuration file, and assumes them to be plain text -

Validate that CSE has been registered with VCD as an extension, via vcd-cli:

# login as cloud administrator
vcd login vcd.serviceprovider.com system <administrator user name> --password <password> -w -i

# list AMQP based api extensions
vcd system extension list

# get details of CSE extension
vcd system extension info cse

Note: For MQTT based api extensions, a REST client should be used instead, since vcd-cli is not capable of lsiting or interacting with MQTT based api extensions.

GET /cloudapi/extensions/api
GET /cloudapi/extensions/api/urn:vcloud:extension-api:VMWare:cse:1.0.0

Setting the API Extension Timeout

The API extension timeout is the duration (in seconds) that VCD waits for a response from the CSE server extension. The default value is 10 seconds, which may be too short for some environments. To alter the timeout value, follow the steps below.

Configure the API extension timeout on the VCD cell:

cd /opt/vmware/vcloud-director/bin
./cell-management-tool manage-config -n extensibility.timeout -l
./cell-management-tool manage-config -n extensibility.timeout -v 20

Sharing CSE catalog with non admin tenant users

CSE installation creates a catalog to store all the Kubernetes templates that are later used to deploy Kubernetes clusters. This catalog is by default shared with all users across all organizations who has the right Catalog: View Published Catalogs. Users with Organization Administrator role, already has this right baked into their role. However if users who are not organization administrator want to access this catalog (cluster creation requires access to this catalog), they need to be assigned a role that has the above mentioned right. The following set of commands can be used to achieve the desired outcome.

# login as system/cloud administrator
vcd login vcd.serviceprovider.com system administrator --password passw0rd -w -i

# switch over to the tenant organization
vcd org use myorg

# add the right to the role of the user in question
vcd role add-right <role name> 'Catalog: View Published Catalogs'

# built-in roles can't be edited and needs to be cloned first
vcd role clone <built role e.g. "vApp Author"> 'New Role'
vcd role add-right 'New Role' 'Catalog: View Published Catalogs'

# Assign this new role to the user in question via VCD UI or
# create a new user in the organization with the new role
vcd user create <new user name> <password> 'New Role' --enabled

Server Operation

Running CSE Server Manually

To start the server manually, run the command shown below.

# Run server in foreground.
cse run --config config.yaml

# Run server in background
nohup cse run --config config.yaml > nohup.out 2>&1 &

Refer to Log bundles to see server-side logs.

Running CSE Server as a Service

A sample systemd unit is provided by CSE. Here are instructions for installation.

Once installed you can start the CSE service daemon using systemctl start cse. To enable, disable, and stop the CSE service remotely, use CSE client.

# hook CSE unit into relevant places to automatically do things
# depending on what's specified in the unit file
$ vcd cse system enable

# start CSE service now
$ systemctl start cse

# stop processing new requests, and finish processing existing requests
# disables CSE service
$ vcd cse system disable
property    value
----------  ----------------------
message     CSE has been disabled.

# wait until all active threads have finished, then exits CSE service
$ vcd cse system stop -y
property    value
----------  ------------------------------
message     CSE graceful shutdown started.

If the CSE Server is disabled, users will get the following message when executing any CSE command:

$ vcd cse cluster list
Usage: vcd cse cluster list

Error: CSE service is disabled. Contact the System Administrator.

To keep the service running after logout on Photon OS, check /etc/systemd/logind.conf and set KillUserProcesses to no

[Login]
KillUserProcesses=no

Monitoring CSE

Cloud Administrators can monitor CSE service status via CSE client:

$ vcd cse system info
property                           value
---------------------------------  ------------------------------------------------------
all_consumer_threads               4
all_threads                        7
config_file                        config.yaml
cse_server_api_version             36.0
cse_server_running_in_legacy_mode  False
cse_server_supported_api_versions  35.0
                                   36.0
description                        Container Service Extension for VMware vCloud Director
product                            CSE
python                             3.7.3
requests_in_progress               1
status                             Running
version                            3.1.1

Server Upgrade and Removal

Upgrading CSE Server Software

  1. Gracefully stop CSE Server.
  2. Reinstall container-service-extension from PyPI:
    • pip3 install --user --upgrade container-service-extension
  3. Check the release notes for version compatibility.
  4. Use cse sample command to generate a new sample config file and fill in the relevant values from the previous config file.
  5. If the previously generated templates are no longer supported by the new version, delete the old templates (from VCD UI / vcd-cli) and generate new ones via
    • cse template install -c myconfig.yaml Check here for available templates.
  6. Run cse upgrade command to make the environment forward compatible. Refer CSE 3.0 upgrade command
  7. If CSE is being run as a service, start the new version of the service with
    • systemctl start cse.

Uninstalling CSE Server

GET /cloudapi/extensions/api/urn:vcloud:extension-api:VMWare:cse:1.0.0

# Copy the payload, and change enabled to `false`

PUT /cloudapi/extensions/api/urn:vcloud:extension-api:VMWare:cse:1.0.0

DELETE /cloudapi/extensions/api/urn:vcloud:extension-api:VMWare:cse:1.0.0

Useful Commands

cse ... commands are used by cloud administrators to:

vcd cse ... commands are used by cloud administrators to:

The following show useful sample commands.

# Use '-h' option to see help page and options for any cse command.
cse -h
cse install --config config.yaml -h
cse upgrade --config config.yaml -h
cse check config.yaml -h
cse run --config config.yaml -h

# Show all available vcd cse commands.
vcd cse -h

# Login to VCD to use vcd-cli commands.
vcd login <VCD HOSTNAME> system <USERNAME> -iwp <PASSWORD>

# Let SAMPLE_ORG_NAME be active org for this session.
vcd org use SAMPLE_ORG_NAME

# Let SAMPLE_VDC_NAME be active vdc for this session.
vcd vdc use SAMPLE_VDC_NAME

# Enable organization vdc for Native
vcd cse ovdc enable SAMPLE_VDC_NAME

# Enable organization vdc for TKGi (Enterprise PKS)
vcd cse pks ovdc enable SAMPLE_VDC_NAME