From f865fe4513fcc02b63798e90d7bb095a12a4cd46 Mon Sep 17 00:00:00 2001
From: Pjotr Prins
Date: Tue, 31 Aug 2021 10:17:04 +0200
Subject: pluto service and working on fallbacks

---
 topics/notebooks/pluto.gmi               | 17 +++++++++++++++++
 topics/systems/fallbacks-and-backups.gmi | 22 ++++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 topics/notebooks/pluto.gmi
 create mode 100644 topics/systems/fallbacks-and-backups.gmi

diff --git a/topics/notebooks/pluto.gmi b/topics/notebooks/pluto.gmi
new file mode 100644
index 0000000..30b5d8d
--- /dev/null
+++ b/topics/notebooks/pluto.gmi
@@ -0,0 +1,17 @@
+# Julia Pluto
+
+## Pluto in a Guix container
+
+We run Pluto in a container. It allows for self-install of Julia packages:
+
+```
+guix environment -L ~/guix-past/modules/ -L ~/guix-bioinformatics/ julia-visuals -C --ad-hoc vim bash wget openssl nss  --network
+```
+
+To prevent complaints of SSL set the path correctly, or simply (not ideal)
+
+```
+echo "check_certificate = off" >> ~/.wgetrc
+
+bash runpluto.sh 4343
+```
diff --git a/topics/systems/fallbacks-and-backups.gmi b/topics/systems/fallbacks-and-backups.gmi
new file mode 100644
index 0000000..6df6937
--- /dev/null
+++ b/topics/systems/fallbacks-and-backups.gmi
@@ -0,0 +1,22 @@
+# Fallbacks and backups
+
+As a hurricane is barreling towards our machine room in Memphis we are checking our fallbacks and backups for GeneNetwork. For years we have been making backups on Amazon - both S3 and a running virtual machine. The latter was expensive, so I replaced it with a bare metal server which earns itself (if it hadn't been down for months, but that is a different story).
+
+## Backup and restore
+
+We are using borg for backing up data. Borg is excellent at deduplication and compression of data and is pretty fast too. Incremental copies work with rsync - so that is fast. To restore the full MariaDB database from a local borg repo takes a few minutes:
+
+```
+wrk@epysode:/export/restore_tux01$ time borg extract -v /export2/backup/tux01/borg-tux01::BORG-TUX01-MARIADB-20210829-04:20-Sun
+real    17m32.498s
+user    8m49.877s
+sys     4m25.934s
+```
+
+This all contrasts heavily with restoring 300GB from Amazon S3.
+
+Next restore the GN2 home dir
+
+```
+root@epysode:/# borg extract export2/backup/tux01/borg-genenetwork::TUX01_BORG_GN2_HOME-20210830-04:00-Mon
+```
-- 
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