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February 19, 2018 15:34
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downtime free jenkins upgrade
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| 1. Put current instance ( `dotci1-1`) in 'shutdown-mode' | |
| * Stop kafka consumer | |
| * flip job flilter to exclude everything | |
| 2. Bootup newinstance ( `dotci1-2`) | |
| * with same kafka consumer id | |
| * use job filter from `dotci1-1` | |
| 3. flip ngnix rule `/dotci` to point to `http://dotic1-2:8080/jenkins` |
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