The option to include or exclude a host or a cluster is available in the Service Engine group page in the Avi Load Balancer user interface.
To edit an SE group, navigate to . Click the edit icon for the SE group to be edited. Under the Host & Data Store Scope section, click the Advanced tab and click Cluster or Host for the Host Scope Service Engine within field.
Note:
Currently, we can perform the include or exclude action for either a cluster or host for any SE group, but not at the same from the Avi Load Balancer UI. The command line interface (CLI) can be used to include this operation on the cluster and the host at the same time for an SE group.
Configuration from CLI
In the following example, we are performing changes for the Service Engine group Default-Group. The configure serviceenginegroup command is used to change the association of a cluster or a host with an SE group for a vCenter cloud.
[admin]: > configure serviceenginegroup Default-Group Multiple objects found for this query. [0]: serviceenginegroup-7aa0dd01-1c56-4310-a169-019e6105698e#Default-Group in tenant admin, Cloud vCenter-Cloud [1]: serviceenginegroup-c1a4cf82-a783-4f24-916c-0f7e95fe0287#Default-Group in tenant admin, Cloud Default-Cloud [2]: serviceenginegroup-765e68fa-e93e-45a1-b0a2-5667ffdc9653#Default-Group in tenant admin, Cloud Openstack Select one: 0 Updating an existing object. Currently, the object is: ----------------------------------------------------------------------------------------------+ Field Value ----------------------------------------------------------------------------------------------+ uuid serviceenginegroup-7aa0dd01-1c56-4310-a169-019e6105698e name Default-Group max_vs_per_se 10 min_scaleout_per_vs 1 max_scaleout_per_vs 4 max_se 10 vcpus_per_se 2 memory_per_se 2048 disk_per_se 10 gb max_cpu_usage 80 gb min_cpu_usage 30 se_deprovision_delay 60 min auto_rebalance False se_name_prefix Avi vs_host_redundancy True vcenter_folder test vcenter_datastores_include False vcenter_datastore_mode VCENTER_DATASTORE_ANY vcenter_hosts host_refs[1] 10.10.16.100 include True cpu_reserve False mem_reserve True mgmt_network_ref Mgmt_N3k ha_mode HA_MODE_SHARED algo PLACEMENT_ALGO_PACKED buffer_se 1 active_standby False placement_mode PLACEMENT_MODE_AUTO
[admin]: serviceenginegroup> vcenter_clusters [admin]: serviceenginegroup:vcenter_clusters> cancel Exit the current submode without saving cluster_refs Help string not found for argument do Execute a show command include Help string not found for argument no Remove field save Save and exit the current submode show_schema show object schema watch Watch a given show command where Display the in-progress object [admin]: serviceenginegroup:vcenter_clusters> include cluster_refs Arista N3K SSD-build-servers [admin]: serviceenginegroup:vcenter_clusters> include cluster_refs N3K [admin]: serviceenginegroup:vcenter_clusters> save [admin]: serviceenginegroup> vcenter_hosts [admin]: serviceenginegroup:vcenter_hosts> cancel Exit the current submode without saving do Execute a show command host_refs Help string not found for argument include Help string not found for argument no Remove field save Save and exit the current submode show_schema show object schema watch Watch a given show command where Display the in-progress object [admin]: serviceenginegroup:vcenter_hosts> include host_refs 10.10.16.1 10.10.16.109 10.10.16.12 10.10.16.18 10.10.16.3 10.10.16.72 10.10.16.79 10.10.16.9 10.10.16.98 esx-64.avi.local 10.10.16.100 10.10.16.11 10.10.16.13 10.10.16.19 10.10.16.4 10.10.16.73 10.10.16.8 10.10.16.90 10.10.16.99 esx-65.avi.local 10.10.16.101 10.10.16.110 10.10.16.14 10.10.16.2 10.10.16.5 10.10.16.75 10.10.16.80 10.10.16.91 esx-57.avi.local esx-66.avi.local 10.10.16.102 10.10.16.111 10.10.16.15 10.10.16.20 10.10.16.6 10.10.16.76 10.10.16.81 10.10.16.93 esx-59.avi.local esx-67.avi.local 10.10.16.103 10.10.16.112 10.10.16.16 10.10.16.21 10.10.16.69 10.10.16.77 10.10.16.83 10.10.16.95 esx-61.avi.local esx-68.avi.local 10.10.16.104 10.10.16.113 10.10.16.17 10.10.16.22 10.10.16.70 10.10.16.78 10.10.16.84 10.10.16.97 esx-63.avi.local [admin]: serviceenginegroup:vcenter_hosts> include host_refs 10.10.16.18 [admin]: serviceenginegroup:vcenter_hosts> save [admin]: serviceenginegroup> save ----------------------------------------------------------------------------------------------+ Field Value ----------------------------------------------------------------------------------------------+ uuid serviceenginegroup-7aa0dd01-1c56-4310-a169-019e6105698e name Default-Group max_vs_per_se 10 min_scaleout_per_vs 1 max_scaleout_per_vs 4 max_se 10 vcpus_per_se 2 memory_per_se 2048 disk_per_se 10 gb max_cpu_usage 80 gb min_cpu_usage 30 se_deprovision_delay 60 min auto_rebalance False se_name_prefix Avi vs_host_redundancy True vcenter_folder test vcenter_datastores_include False vcenter_datastore_mode VCENTER_DATASTORE_ANY vcenter_clusters **cluster_refs[1] N3K** include True vcenter_hosts **host_refs[1] 10.10.16.100** **host_refs[2] 10.10.16.18** include True cpu_reserve False mem_reserve True mgmt_network_ref Mgmt_N3k ha_mode HA_MODE_SHARED algo PLACEMENT_ALGO_PACKED buffer_se 1 active_standby False placement_mode PLACEMENT_MODE_AUTO
The cluster name included for the SE group is N3K. The hosts included for the SE group are 10.10.16.100 and 10.10.16.18. See the following information to check the changes in the membership of the cloud.
auto_rebalance False se_name_prefix Avi vs_host_redundancy True vcenter_folder test vcenter_datastores_include False vcenter_datastore_mode VCENTER_DATAST0RE_ANY vcenter_clusters cluster_refs[l] N3K include True vcenter_hosts host_refs[l] 10.10.16.100 host_refs[2] 10.10.16.18 include True cpu_reserve False mem_reserve True mgmt_network_ref Mgmt_N3k ha_mode HA_M0DE_SHARED algo PLACEMENT_ALG0_PACKED buffer_se 1 active_standby False placement_mode PLACEMENT_M0DE_AUTO
Observe the change in the following values.
cluster_refs[l] N3K
host_refs[l] 10.10.16.100 host_refs[2] 10.10.16.18
