op-guide: update ansible deployment steps and wording (#483)

* op-guide: update ansible deployment steps and wording * op-guide: add description under a headline
pingcap · Jun 11, 2018 · 57ec209 · 57ec209
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diff --git a/op-guide/ansible-deployment.md b/op-guide/ansible-deployment.md
@@ -185,13 +185,10 @@ Take two TiKV instances on each TiKV node as an example:
 [tikv_servers]
 TiKV1-1 ansible_host=172.16.10.4 deploy_dir=/data1/deploy tikv_port=20171 labels="host=tikv1"
 TiKV1-2 ansible_host=172.16.10.4 deploy_dir=/data2/deploy tikv_port=20172 labels="host=tikv1"
-TiKV1-3 ansible_host=172.16.10.4 deploy_dir=/data3/deploy tikv_port=20173 labels="host=tikv1"
 TiKV2-1 ansible_host=172.16.10.5 deploy_dir=/data1/deploy tikv_port=20171 labels="host=tikv2"
 TiKV2-2 ansible_host=172.16.10.5 deploy_dir=/data2/deploy tikv_port=20172 labels="host=tikv2"
-TiKV2-3 ansible_host=172.16.10.5 deploy_dir=/data3/deploy tikv_port=20173 labels="host=tikv2"
 TiKV3-1 ansible_host=172.16.10.6 deploy_dir=/data1/deploy tikv_port=20171 labels="host=tikv3"
 TiKV3-2 ansible_host=172.16.10.6 deploy_dir=/data2/deploy tikv_port=20172 labels="host=tikv3"
-TiKV3-3 ansible_host=172.16.10.6 deploy_dir=/data3/deploy tikv_port=20173 labels="host=tikv3"
 
 [monitoring_servers]
 172.16.10.1

diff --git a/op-guide/offline-ansible-deployment.md b/op-guide/offline-ansible-deployment.md
@@ -1,9 +1,9 @@
 ---
-title: Offline Deployment Using Ansible
+title: Deploy TiDB Offline Using Ansible
 category: operations
 ---
 
-# Offline Deployment Using Ansible
+# Deploy TiDB Offline Using Ansible
 
 ## Prepare