ionutbalutoiu / charm-infra-mssql

SQL Server Juju infrastructure charm

Overview

This is an infrastructure Juju charm for Microsoft SQL server for Linux. It uses the operator framework, and supports High Availability (HA) via the hacluster subordinate charm.

Deployment

The Microsoft SQL Server EULA must be explicitly accepted via the accept-eula charm config before deploying the charm. We also need set the vip used by the pacemaker cluster for HA:

juju deploy ./mssql.charm --num-units 3 \
    --config accept-eula=true \
    --config vip="<VIP_ADDRESS>"

juju deploy cs:hacluster mssql-hacluster \
    --config failure_timeout=60 \
    --config cluster_recheck_interval=120

juju add-relation mssql mssql-hacluster

Scale-out

At any point in time, you can add more SQL Server instances via:

juju add-unit mssql -n 2

The existing replicated databases will be synchronized on the new nodes, once they join the cluster.

Microsoft SQL Server Utility

To communicate with the database, the sqlcmd utility comes handy. Instructions to install it on Ubuntu are available here.

An example of command to connect to the database would be:

sqlcmd -S 10.13.114.200 -U "<DB_USER_NAME>" -P "<DB_USER_PASSWORD>"

To find out the SA password, use the get-sa-password Juju action:

juju run-action --wait mssql/leader get-sa-password