Add initial minio backup script

Author: mckern

bin/ghe-backup

@@ -190,6 +190,11 @@ if ghe-ssh "$GHE_HOSTNAME" -- 'ghe-config --true app.actions.enabled'; then
   ghe-backup-actions 1>&3 || failures="$failures actions"
 fi
 
+if ghe-ssh "$GHE_HOSTNAME" -- 'ghe-config --true app.minio.enabled'; then
+  echo "Backing up Minio data ..."
+  ghe-backup-minio 1>&3 || failures="$failures minio"
+fi
+
 commands=("
 echo \"Backing up Redis database ...\"
 ghe-backup-redis > redis.rdb || printf %s \"redis \" >> \"$failures_file\"")

share/github-backup-utils/ghe-backup-minio

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+#/ Usage: ghe-backup-minio
+#/ Take an online, incremental snapshot of all minio data
+#/
+#/ Note: This command typically isn't called directly. It's invoked by
+#/ ghe-backup.
+set -e
+
+# Bring in the backup configuration
+# shellcheck source=share/github-backup-utils/ghe-backup-config
+. "$(dirname "${BASH_SOURCE[0]}")/ghe-backup-config"
+
+bm_start "$(basename $0)"
+
+# Set up remote host and root backup snapshot directory based on config
+port=$(ssh_port_part "$GHE_HOSTNAME")
+host=$(ssh_host_part "$GHE_HOSTNAME")
+backup_dir="$GHE_SNAPSHOT_DIR/minio"
+
+# Verify rsync is available.
+if ! command -v rsync 1> /dev/null 2>&1; then
+  echo "Error: rsync not found." 1>&2
+  exit 1
+fi
+
+# Perform a host-check and establish GHE_REMOTE_XXX variables.
+ghe_remote_version_required "$host"
+
+# Make sure root backup dir exists if this is the first run
+mkdir -p "$backup_dir"
+
+# If we have a previous increment and it is not empty, avoid transferring existing files via rsync's
+# --link-dest support. This also decreases physical space usage considerably.
+if [ -d "$GHE_DATA_DIR/current/minio" ] && [ "$(ls -A $GHE_DATA_DIR/current/minio)" ]; then
+  link_dest="--link-dest=$GHE_DATA_DIR/current/minio"
+fi
+
+# Transfer all minio data from the user data directory using rsync.
+ghe_verbose "* Transferring minio files from $host ..."
+
+ghe-rsync -avz \
+  -e "ghe-ssh -p $port" \
+  --rsync-path='sudo -u minio rsync' \
+  --exclude ".minio.sys" \
+  $link_dest \
+  "$host:$GHE_REMOTE_DATA_USER_DIR/minio/" \
+  "$GHE_SNAPSHOT_DIR/minio" 1>&3
+
+bm_end "$(basename $0)"