request node halt (Junos OS Evolved)
Syntax
request node halt node-name <(at time | in minutes)> <message message>
Description
Use this command to halt a Routing Engine. Halt instructs the hardware to stop all CPU functions but leave the node in a powered-on, standby state. To un-halt the node, do one of the following:
-
Issue the
request chassis cb slot slot-number onlineoperational mode command from the primary Routing Engine. -
Log in to the console port for that node and press any key to reboot the node.
We do not recommend leaving a node halted for a long period of time, because the node is not available as a backup in case something happens to the primary Routing Engine.
Options
| node-name |
Specify the Routing Engine node (re0 | re1) to halt. You can halt the primary Routing Engine. |
| (at time | in minutes) |
(Optional) Specify when the action should occur, either in time, in hh:mm format, or in number of minutes. |
| message message |
(Optional) Message to display to all users. |
Required Privilege Level
view
Sample Output
request node halt re1
On the primary Routing Engine:
user@host-re0> request node halt re1
Halt the node ? [yes,no] (no) yes
*** System shutdown message from user@host-re0***
Shutdown at Thu Apr 29 16:31:01 2021
.
{master}
user@host-re0>When logged into the console port on the node during the halt:
[...output truncated, processes stopped...] Shutdown target is 'halt' Checking on root FS daemon ........Done Cleaning up root FS daemon...done /sbin/bom.sh: line 1242: /tmp/mp_aid: Read-only file system /sbin/bom.sh: line 1793: /tmp/sku_mode_log: Read-only file system /sbin/bom.sh: line 1242: /tmp/mp_aid: Read-only file system /sbin/bom.sh: line 1793: /tmp/sku_mode_log: Read-only file system Clearing linux_up bit warning - 'debugfs' was not mounted Deactivating swap... Putting SSD devices in standby mode... /dev/sdb: issuing standby command /dev/sdc: issuing standby command SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 14 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 /dev/sda: issuing standby command The operating system has halted. Please press any key to reboot...
Release Information
Command introduced in Junos OS Evolved Release 18.3R1.