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The information here will be of interest to people looking to understand, improve and replicate Apache CloudStack test infrastructure across sites. 

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The central jenkins (master) instance at jenkins.bacd.org connects to a jenkins slave within the data center via SSH. Traditionally a non-standard port with key-pair only access is preferred to keep the deployment secure. This slave is a VM with necessary packages, scripts and tools that drives the rest of the dedicated test infrastructure through various configurations required for testing. All the necessary configurations are controlled by a matrix of combinations. These combinations are nothing but jobs on the jenkins (master).

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View the configuration of test-matrix/test-matrix-extended jobs to understand further.

• test-matrix-* - This is the umbrella job that starts all other jobs in the sequence. This job points to master by default and so does test-yumrepo-refresh. When you want to change the branch you have to change it for both jobs to ensure your tests are running on the right target branch.
• test-yumrepo-refresh - hourly job refreshing packages on a s3 bucket
• test-environment-refresh - cleanup all hosts to a target cobbler profile (xen/xcp/kvm)
• test-packaging - deploy new cloudstack vm, configure packages, install cloudstack latest rpms from s3
• test-setup-advanced-zone - setup an advanced zone on the testbed and wait for systemvms to be ready
• test-smoke|regression-matrix - run the bvt/full regression tests on the environment
• test-maintenance-operations - run any tests that need to run sequentially like maintenance mode on hosts, disabling zone etc.

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