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Increasing Number of Concurrent Users for Docker
- 21 Jun 2024
- 3 Minutes to read
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Increasing Number of Concurrent Users for Docker
- Updated on 21 Jun 2024
- 3 Minutes to read
- Contributors
- Print
- PDF
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This procedure for Skylight orchestrator Docker is used to increase the number of concurrent users in Skylight orchestrator to 100 (for Skylight orchestrator Docker version 23.04.1 or prior) and 250 (for Skylight orchestrator Docker version 23.12 and later).
The following steps are required:
- On Skylight orchestrator Docker, start the Skylight orchestrator services
- Increase physical RAM of the Docker host
- Increase the User profiles
Starting the Skylight orchestrator Services
Stopping Hot Standby Process and Starting Skylight orchestrator Services on Hot Standby Configuration
Active Site
Open an SSH terminal session to the Skylight orchestrator CLI on port 2200.
Log in as the skylight user.
Configure the preferred site by entering:
redundancy config preferred {site-a | site-b}
- Stop the Hot Standby process by entering:
redundancy control stop
- Start services by entering:
services start
Standby Site
Open an SSH terminal session to the Skylight orchestrator CLI on port 2200.
Log in as the skylight user.
Start services by entering:
services start
Starting Skylight orchestrator Services on Non-Hot Standby Configuration
Open an SSH terminal session to the Skylight orchestrator CLI on port 2200.
Log in as the skylight user.
Start services by entering:
services start
Note: If the services are started, skip this step.
Increasing Physical RAM
The Skylight orchestrator Docker will use the RAM of the Docker host, so ensure that the Docker host can provide the required CPU and RAM, as the table below:
| Profile Name | CPU (vCPUs) | Memory (GiB) | Disk I/O (IOPS @6KB)* |
|---|---|---|---|
| 5K | 6 | 46 | 5K |
| 15K | 10 | 80 | 15K |
| 30K | 24 | 144 | 30K |
| 60K | 40 | 250 | 60K |
*For 15K, 30K and 60K profiles, disk I/O must be split over distinct mount points. Average latency must remain under 5ms.
Note: If you are running a redundant configuration, these steps must be run on both Docker hosts of the redundant pair.
Increasing the User Profiles
To increase the user profiles
Access SSH to the Docker host via port 22.
Check the RAM of the Skylight orchestrator by running the following command to ensure that the users have already provided the exact RAM.
free -h
Open an SSH terminal session to the Skylight orchestrator CLI on port 2200.
Log in as the skylight user.
Increase user profile by entering:
a. For Skylight orchestrator Docker 23.04.1 and prior:
deployment edit type single-node profile <profile_name> user-profile user-100
b. For Skylight orchestrator Docker 23.12 and later:
deployment edit type single-node profile <profile_name> user-profile user-250
Note: If you are running a redundant configuration, these steps must be run on both virtual appliances of the redundant pair.
CAUTION: Changing the deployment profile will delete the contents of the /data/medn* instance directories. This logic does not apply when the same deployment profile is reapplied. (This means the contents of the /data/medn* instance directories will be preserved when the same deployment profile is reapplied.)
Starting the Skylight orchestrator Services
The Skylight orchestrator services must be started after changing the user profile.
Starting the Skylight orchestrator Services for a Hot Standby Configuration
Active Site
Open an SSH terminal session to the Skylight orchestrator on port 2200.
Log in as the skylight user.
Start the Hot Standby process by entering:
redundancy control start
Notes:
It may take up to 10 minutes for the Skylight orchestrator services to be healthy.
When redundancy show status reports that replication status is up, the application can be accessed.
Starting the Skylight orchestrator Services for a Non-Hot Standby Configuration
Open an SSH terminal session to the Skylight orchestrator on port 2200.
Log in as the skylight user.
Start app_server by entering:
services start app_server
Note: It may take up to 10 minutes for the Skylight orchestrator services to be healthy.
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