The Junos 21 branch is now in Junos recommended versions for MX routers, see https://kb.juniper.net/InfoCenter/index?page=content&id=KB21476&smlogin=true
Upgrading our MXs has several advantages:
* Testing routers redundancy in a planned window
* Keeping a tight Junos version spread (we currently have 12, 14, 15, 17, 18, 20)
* Leveraging features improvements (eg. DNS in mgmt-junos see T269340)
* Fixing low risk security issues
Process is documented in https://wikitech.wikimedia.org/wiki/Juniper_router_upgrade
|Device|Scheduled for|Status|
|---|---|---|
|cr3-ulsfo| 2022-09-06 - 08:00 UTC - 2h | {icon check color=green} T295690#8213789 |
|cr4-ulsfo| 2022-09-06 - 08:00 UTC - 2h | {icon check color=green} T295690#8213789 |
|cr3-eqsin| 2022-09-07 - 08:00 UTC - 2h | {icon check color=green} T295690#8217086|
|cr2-eqsin| 2022-09-07 - 08:00 UTC - 2h | {icon check color=green} T295690#8217086|
|cr3-knams| 2022-09-08 - 08:00 UTC - 2h | {icon check color=green} T295690#8220460 |
|cr2-esams| 2022-09-08 - 08:00 UTC - 2h | {icon check color=green} T295690#8220460 |
|cr3-esams| 2022-09-08 - 08:00 UTC - 2h | {icon times color=red} T295690#8220460 |
|cr3-esams (attempt #2)| 2022-09-12 - 08:00 UTC - 3h | {icon check color=green} T295690#8229042 |
|cr1-codfw| 2022-09-13 - 08:00 UTC - 3h | {icon check color=green} T295690#8232607 |
|cr2-codfw| 2022-09-13 - 08:00 UTC - 3h | {icon check color=green} T295690#8232607 |
|cr2-eqdfw| 2022-09-14 - 08:00 UTC - 1h | |
|cr1-eqiad| 2022-09-29 - 08:00 UTC - 3h | |
|cr2-eqiad| 2022-09-29 - 08:00 UTC - 3h | |
|cr2-eqord| 2022-09-29 - 08:00 UTC - 3h | |
[] Then remove unnecessary images from apt1001:/srv/junos/