Add missing apex page

content/apex/_index.md

@@ -0,0 +1,18 @@
+---
+title: "Apex"
+description: "Login node"
+date: 2025-09-05T15:34:59+02:00
+---
+
+![Apex](apex.jpg)
+
+Apex serves as the login node to the rest of machines in jungle. Connect to it
+by accessing `ssflogin.bsc.es`, only from the apex you will be able to see other
+machines.
+
+Use `sinfo` to see which nodes are available and `salloc` to request them (see
+the manual for more details). Avoid doing large builds or computations in apex,
+use a different node instead.
+
+The home is mounted from a hardware RAID 5 of 4 disks, and is shared across
+other machines.