cleaned up couchdb migration and upgrade notes

1 files changed, 115 insertions, 80 deletions

diff --git a/pages/docs/platform/services/couchdb.md b/pages/docs/platform/services/couchdb.md
index 5b64ada..7bcc48c 100644
--- a/pages/docs/platform/services/couchdb.md
+++ b/pages/docs/platform/services/couchdb.md
@@ -4,19 +4,76 @@
 Topology
 ------------------------
 
-`couchdb` nodes communicate heavily with `webapp`, `mx`, and `soledad` nodes. Typically, `couchdb` nodes will also have the `soledad` service.
+Required:
+
+* Nodes with `couchdb` service must also have `soledad` service, if email is enabled.
+
+Suggested:
+
+* Nodes with `couchdb` service communicate heavily with `webapp` and `mx`.
 
 `couchdb` nodes do not need to be reachable from the public internet, although the `soledad` service does require this.
 
 Configuration
 ----------------------------
 
-There are no options that should be modified for `couchdb` nodes.
+### Nighly dumps
+
+You can do a nightly couchdb data dump by adding this to your node config:
+
+    "couch": {
+      "backup": true
+    }
+
+Data will get dumped to `/var/backups/couchdb`.
+
+### Plain CouchDB
+
+BigCouch is not supported on Platform version 0.8 and higher: only plain CouchDB is possible. For earlier versions, you must do this in order to use plain CouchDB:
+
+    "couch": {
+      "master": true,
+      "pwhash_alg": "pbkdf2"
+    }
+
+Various Tasks
+-------------------------------------------------
+
+### Re-enabling blocked account
+
+When a user account gets destroyed from the webapp, there's still a leftover doc in the identities db so other people can't claim that account without an admin's intervention. You can remove this username reservation through the webapp.
+
+However, here is how you could do it manually, if you wanted to:
+
+grep the identities db for the email address:
+
+    curl -s --netrc-file /etc/couchdb/couchdb.netrc -X GET http://127.0.0.1:5984/identities/_all_docs?include_docs=true|grep test_127@bitmask.net
+
+lookup "id" and "rev" to delete the doc:
+
+    curl -s --netrc-file /etc/couchdb/couchdb.netrc -X DELETE 'http://127.0.0.1:5984/identities/b25cf10f935b58088f0d547fca823265?rev=2-715a9beba597a2ab01851676f12c3e4a'
+
+### How to find out which userstore belongs to which identity?
+
+    /usr/bin/curl -s --netrc-file /etc/couchdb/couchdb.netrc '127.0.0.1:5984/identities/_all_docs?include_docs=true' | grep testuser
 
-NOTE: The LEAP platform is designed to support many database nodes. The goal is for you to be able to add nodes and remove nodes and everything should rebalance and work smoothly. Currently, however, we are using a broken CouchDB variant called BigCouch. Until we migrate off BigCouch, you should only have one `couchdb` node. More than one will work most of the time, but there are some bugs that can pop up and that are unfixed.
+    {"id":"665e004870ee17aa4c94331ff3ecb173","key":"665e004870ee17aa4c94331ff3ecb173","value":{"rev":"2-2e335a75c4b79a5c2ef5c9950706fe1b"},"doc":{"_id":"665e004870ee17aa4c94331ff3ecb173","_rev":"2-2e335a75c4b79a5c2ef5c9950706fe1b","user_id":"665e004870ee17aa4c94331ff3cd59eb","address":"testuser@example.org","destination":"testuser@example.org","keys": ...
 
-Manual Tasks
----------------------
+* search for the "user_id" field
+* in this example testuser@example.org uses the database user-665e004870ee17aa4c94331ff3cd59eb
+
+
+### How much disk space is used by a userstore
+
+Beware that this returns the uncompacted disk size (see http://wiki.apache.org/couchdb/Compaction)
+
+    echo "`curl --netrc -s -X GET 'http://127.0.0.1:5984/user-dcd6492d74b90967b6b874100b7dbfcf'|json_pp|grep disk_size|cut -d: -f 2`/1024"|bc
+
+
+Deprecated BigCouch Tasks
+-----------------------------------------
+
+As of release 0.8, the LEAP platform no longer supports BigCouch. This information is kept here for historical reference.
 
 ### Rebalance Cluster
 
@@ -24,52 +81,78 @@ Bigcouch currently does not have automatic rebalancing.
 It will probably be added after merging into couchdb.
 If you add a node, or remove one node from the cluster,
 
-. make sure you have a backup of all DBs !
+1. make sure you have a backup of all DBs !
+
+1. put the webapp into [[maintenance mode => services/webapp#maintenance-mode]]
+
+1. Stop all services that access the database:
 
-. put the webapp into [maintenance mode](https://leap.se/en/docs/platform/services/webapp#maintenance-mode)
-. Stop all services that access the database:
+    ```
+    workstation$ leap ssh soledad-nodes
+    server# /etc/init.d/soledad-server stop
 
-  * leap-mx
-  * postfix
-  * soledad-server
-  * nickserver
+    workstation$ leap ssh mx-node
+    server# /etc/init.d/postfix stop
+    server# /etc/init.d/leap-mx stop
 
-. dump the dbs:
+    workstation$ leap ssh webapp
+    server# /etc/init.d/nickserver stop
+    ```
 
+    Alternately, you can create a temporary firewall rule to block access (run on couchdb server):
+
+    ```
+    server# iptables -A INPUT -p tcp --dport 5984 --jump REJECT
+    ```
+
+1. dump the dbs:
+
+    ```
     cd /srv/leap/couchdb/scripts
     time ./couchdb_dumpall.sh
+    ```
+
+1. delete all dbs
+
+1. shut down old node
 
-. delete all dbs
-. shut down old node
-. check the couchdb members
+1. check the couchdb members
 
+    ```
     curl -s —netrc-file /etc/couchdb/couchdb.netrc -X GET http://127.0.0.1:5986/nodes/_all_docs
     curl -s —netrc-file /etc/couchdb/couchdb.netrc http://127.0.0.1:5984/_membership
+    ```
 
+1. remove bigcouch from all nodes
 
-. remove bigcouch from all nodes
-
+    ```
     apt-get --purge remove bigcouch
+    ```
 
+1. deploy to all couch nodes
 
-. deploy to all couch nodes
-
-    leap deploy development +couchdb
+    ```
+    leap deploy couchdb
+    ```
 
-. most likely, deploy will fail because bigcouch will complain about not all nodes beeing connected. Let the deploy finish, restart the bigcouch service on all nodes and re-deploy:
+1. most likely, deploy will fail because bigcouch will complain about not all nodes beeing connected. Let the deploy finish, restart the bigcouch service on all nodes and re-deploy:
 
+    ```
     /etc/init.d/bigcouch restart
+    ```
 
+1. restore the backup
 
-. restore the backup
-
+    ```
     cd /srv/leap/couchdb/scripts
     time ./couchdb_restoreall.sh
+    ```
 
+### Migrating from BigCouch to plain CouchDB
 
-### Migrating from bigcouch to plain couchdb
+Here are the steps needed to replace BigCouch with CouchDB.
 
-At the end of this process, you will have just *one* couchdb server. If you had a bigcouch cluster before, you will be removing all but one of those machines to consolidate them into one couchdb machine.
+At the end of this process, you will have just *one* noe with `services` property equal to `couchdb`. If you had a BigCouch cluster before, you will be removing all but one of those machines to consolidate them into one couchdb machine.
 
 1. if you have multiple nodes with the couchdb service on them, pick one of them to be your couchdb server, and remove the service from the others. If these machines were only doing couchdb, you can remove the nodes completely with `leap node rm <nodename>` and then you can decommission the servers
 
@@ -124,6 +207,12 @@ At the end of this process, you will have just *one* couchdb server. If you had
     workstation$ leap deploy couchdb
     ```
 
+    If you used the iptables method of blocking access to couchdb, you need to run it again because the deploy just overwrote all the iptables rules:
+
+    ```
+    server# iptables -A INPUT -p tcp --dport 5984 --jump REJECT
+    ```
+
 1. restore the backup, this will take approximately the same amount of time as the backup took above:
 
     ```
@@ -161,57 +250,3 @@ At the end of this process, you will have just *one* couchdb server. If you had
 
 1. Relax, enjoy a refreshing beverage.
 
-### Re-enabling blocked account
-
-When a user account gets destroyed from the webapp, there's still a leftover doc in the identities db so other people can't claim that account without an admin's intervention. You can remove this username reservation through the webapp.
-
-However, here is how you could do it manually, if you wanted to:
-
-grep the identities db for the email address:
-
-    curl -s --netrc-file /etc/couchdb/couchdb.netrc -X GET http://127.0.0.1:5984/identities/_all_docs?include_docs=true|grep test_127@bitmask.net
-
-lookup "id" and "rev" to delete the doc:
-
-    curl -s --netrc-file /etc/couchdb/couchdb.netrc -X DELETE 'http://127.0.0.1:5984/identities/b25cf10f935b58088f0d547fca823265?rev=2-715a9beba597a2ab01851676f12c3e4a'
-
-### How to find out which userstore belongs to which identity?
-
-    /usr/bin/curl -s --netrc-file /etc/couchdb/couchdb.netrc '127.0.0.1:5984/identities/_all_docs?include_docs=true' | grep testuser
-
-    {"id":"665e004870ee17aa4c94331ff3ecb173","key":"665e004870ee17aa4c94331ff3ecb173","value":{"rev":"2-2e335a75c4b79a5c2ef5c9950706fe1b"},"doc":{"_id":"665e004870ee17aa4c94331ff3ecb173","_rev":"2-2e335a75c4b79a5c2ef5c9950706fe1b","user_id":"665e004870ee17aa4c94331ff3cd59eb","address":"testuser@example.org","destination":"testuser@example.org","keys": ...
-
-* search for the "user_id" field
-* in this example testuser@example.org uses the database user-665e004870ee17aa4c94331ff3cd59eb
-
-
-### How much disk space is used by a userstore
-
-Beware that this returns the uncompacted disk size (see http://wiki.apache.org/couchdb/Compaction)
-
-    echo "`curl --netrc -s -X GET 'http://127.0.0.1:5984/user-dcd6492d74b90967b6b874100b7dbfcf'|json_pp|grep disk_size|cut -d: -f 2`/1024"|bc
-
-## Use plain couchdb instead of bigcouch
-
-Be aware that latest stable couchdb 1.6 cannot be clustered like bigcouch, so you can use this only if you have a single couchdb node.
-
-Use this in your couchdb node config:
-
-    "couch": {
-      "master": true,
-      "pwhash_alg": "pbkdf2"
-    }
-
-Local couch data dumps
-======================
-
-You can let one or more nodes do a nightly couchdb data dump adding this to your node config:
-
-    "couch": {
-      "backup": true
-    }
-
-Data will get dumped to `/var/backups/couchdb`.
-
-Be aware that this will gather all data possibly shared over multiple nodes on one node.
-