JunOS : Versions running on dual partitions are not same

Having the following notification on the console output after booting your Juniper EX switch? WARNING: JUNOS versions running on dual partitions are not same This might have been caused by an incomplete/failed upgrade of JunOS. Either way, unless this is the result of an action made on purpose, it is important that both slices have… Read More »

Windows : Recover lost session profile

Have you lost your session profile since the last time you logged in on your Windows PC (meaning login with your user account and your settings and/or files vanished)? There might be multiple causes for that, such as you logged into a temporary profile or you joined the PC to a domain. (If this happened… Read More »

Dell : How to install a custom issued SSL certificate on iDRAC

If you already have a certificate generated by a certificate authority (or maybe a wildcard certificate), you can use the following procedure to configure it on your iDRAC, so you can get rid of the browser security warning. We will use the iDRAC “racadm” command line utility (if you do not have it already, you… Read More »

VMware : Time on VCSA is out of sync with external PSC

This issue appear to be banal, but actually consumed precious (lost) time of my day deploying a vCenter Server Appliance on an external Platform Service controller, version 6.5. At the “Install – Stage 2: Set Up vCenter Server Appliance”, you are asked for Single Sign-On infos of the PSC appliance. Clicking next, you may encounter… Read More »

JunOS : Configuring the QSFP+ uplink ports on EX4300

By default, all QSFP+ ports on the EX4300 chassis are configured as virtual chassis ports (vcp). VC minimal (recommended) requirement is two ports, meaning that two out of the four ports can be used as regular 40 Gbps interfaces and/or for uplink purpose. Let’s assume we want to use the port #0 and 1 as… Read More »

MacOS : Unable to negotiate with 0.0.0.0 port 22: no matching cipher found

Having the following issue connecting to a device using SSH after upgrading to macOS High Sierra 10.13.2? Unable to negotiate with 0.0.0.0 port 22: no matching cipher found. Their offer: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se This is an expected behavior if you attempt to connect to a legacy system or network device running older version of SSH. To workaround… Read More »

Linux : How to show connected client of NFS export on the server?

Here is how to quickly show the connected clients to a NFS server. It might be useful to know before rebooting the server! On the server, execute the following command (replace <> with the NFS server IP address) :

Example :

You should see a similar output : tcp 0 0 192.168.45.32:2049 192.168.45.52:840… Read More »