From 6445ffc7d44d460a7ba3965a9558ad554128361a Mon Sep 17 00:00:00 2001
From: varac <varacanero@zeromail.org>
Date: Wed, 21 Aug 2013 22:29:34 +0200
Subject: initial commit

---
 couchdb_recreate_dbs.sh | 57 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100755 couchdb_recreate_dbs.sh

(limited to 'couchdb_recreate_dbs.sh')

diff --git a/couchdb_recreate_dbs.sh b/couchdb_recreate_dbs.sh
new file mode 100755
index 0000000..3892720
--- /dev/null
+++ b/couchdb_recreate_dbs.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+
+# script for recreating all dbs
+# useful after a node gets added or removed from the cluster
+# because there's no automatic rebalancing of bigcouch atm (2013/08)
+# One workaround is to recreate all dbs and restore from a backup, 
+# then all current cluster nodes get recognized
+#
+# For each db the following main steps are processed:
+# 1. replicate db to tmp_db
+# 2. delete db, create db
+# 3. replicate tmp_db to db
+
+# concurrent replication might cause stalled tasks, see #https://leap.se/code/issues/3506,
+# so we use slower, sequential replication here
+
+. couchdb-scripts-defaults.conf
+. couchdb_functions
+
+
+dbs="`get_dbs $URL`"
+dbs='users_replicated'  # for debugging
+
+# concurrent replication might cause stalled tasks, see #https://leap.se/code/issues/3506
+for db in $dbs
+do
+  tmpdb="${TMPPREFIX}_${db}"
+
+  echo -e "\n\n\nRecreating db $db\n------------------------------\n"
+
+  # cleaning potential leftovers from past replications
+  task="${db}_${tmpdb}"
+  doc_exists $URL $db $task && ( echo -e "\nDeleting old backup replication task \"$task\" "; delete_doc ${BACKEND_URL} "_replicator" ${task} )
+  doc_exists $URL $db ${tmpdb}_${db} && ( echo -e "\nDeleting old restore replication task \"${tmpdb}_${db}\" "; delete_doc ${BACKEND_URL} "_replicator" ${tmpdb}_${db} )   
+  db_exists $URL $tmpdb && ( echo -e "\nDeleting old backup db $tmpdb"; delete_db $URL $tmpdb )
+
+  # backup, delete, restore
+  echo -e "\nReplicating $db to $tmpdb"
+  replicate_db ${auth_url} ${BACKEND_URL} $db $tmpdb
+
+  echo -e "\nDeleting $db"
+  delete_db $URL $db
+
+  echo -e "\nRestoring $db"
+  replicate_db $auth_url ${BACKEND_URL} $tmpdb $db
+
+
+  # clean up
+  echo -e "\nDeleting backup db $tmpdb"
+  delete_db $URL $tmpdb
+
+  echo -e "\nDeleting backup replication task \"$task\" "
+  delete_doc ${BACKEND_URL} "_replicator" ${task}
+
+  echo -e "\nDeleting restore replication task \"${tmpdb}_${db}\" "
+  delete_doc ${BACKEND_URL} "_replicator" ${tmpdb}_${db}
+done
-- 
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