The recabling should not cause any service interruption even though it caused some few seconds downtime for a similar recabling in eqiad, so the site should be depooled to be on the safe side.
All servers in row C are listed on https://netbox.wikimedia.org/dcim/devices/?tenant=0&q=&sort=name&rack_group_id=13&role=server
The rack C4 switch replacement will cause up to 30min downtime for the following servers:
https://netbox.wikimedia.org/dcim/devices/?rack_id=62&rack_group_id=13&role=server&status=1&tenant=0&q=&sort=name
One mc, 11*wtp, 27*mw
cc @Joe and @elukey to know if that's okay
Looking at doing it Thursday 1st, 4pm UTC, 11am Dallas time, (3h).
**1/preparations**
[x] Rack QFX [papaul]
[x] Connect console [papaul]
[x] Connect USB drive containing Junos 14.1X53-D43.7 (present in install2002:/home/ayounsi/jinstall-qfx-5-14.1X53-D43.7-domestic-signed.tgz) [papaul]
[] Pre-populate SFP-Ts [papaul]
```
ge-4/0/1
ge-4/0/2
ge-4/0/3
ge-4/0/4
ge-4/0/5
ge-4/0/6
ge-4/0/7
ge-4/0/8
ge-4/0/9
ge-4/0/10
ge-4/0/11
ge-4/0/12
ge-4/0/13
ge-4/0/14
ge-4/0/15
ge-4/0/16
ge-4/0/17
ge-4/0/18
ge-4/0/19
ge-4/0/20
ge-4/0/21
ge-4/0/22
ge-4/0/23
ge-4/0/24
ge-4/0/25
ge-4/0/26
ge-4/0/27
ge-4/0/28
ge-4/0/29
ge-4/0/30
ge-4/0/31
ge-4/0/32
ge-4/0/33
ge-4/0/34
ge-4/0/35
ge-4/0/36
ge-4/0/37
ge-4/0/38
ge-4/0/39
```
[] Upgrade and configure VCP on QFX [arzhel]
```request system software add jinstall-qfx-5-14.1X53-D43.7-domestic-signed.tgz ...
request virtual-chassis mode fabric mixed local
request virtual-chassis vc-port set pic-slot 0 member 48
request virtual-chassis vc-port set pic-slot 0 member 49
request system zeroize```
[] Get QFX serial# [arzhel]
[] Pre run VC links [papaul]
**2/ recabling**
{F26971751}
Ignore FPC8 as C8 is the frack rack
[] Depool site in DNS
[] Enable all VC ports on spines [arzhel]
[] Shutdown fpc8 [arzhel]
[] remove fpc8 from config [arzhel]
[] remove fpc8 VC links [papaul]
[] Add: [papaul]
fpc2-fpc4
fpc5-fpc7
[] Confirm working [arzhel]
[] Remove: [papaul]
fpc3-fpc4
fpc3-fpc2
fpc5-fpc6
[] Add: [papaul]
fpc1-fpc7
fpc3-fpc7
fpc2-fpc6
[] Confirm working [arzhel]
[] cleanup unused VC ports [arzhel]
**3/ FPC4 replacement**
[] Downtime hosts in Icinga [arzhel]
[] Power on QFX [papaul]
[] Shutdown EX [arzhel]
[] Reconfigure VCP with QFX serial# [arzhel]
`set virtual-chassis member 8 serial-number XXXX`
[] Move VC cables from EX to QFX [papaul]
[] Move servers' uplinks from EX to QFX [papaul]
[] Repool site [arzhel]
[] Update Netbox
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/vcf-removing.html
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/vcf-adding-device.html