op-guide: add fontconfig note (#456)

Via: pingcap/docs-cn#714
pingcap · May 3, 2018 · 0e35378 · 0e35378
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diff --git a/op-guide/ansible-deployment.md b/op-guide/ansible-deployment.md
@@ -302,6 +302,12 @@ To deploy TiDB using a normal user account, take the following steps:
     ansible-playbook deploy.yml
     ```
 
+    > **Note:** You can use the `Report` button on the Grafana Dashboard to generate the PDF file. This function depends on the `fontconfig` package. To use this function, login to the `grafana_servers` machine and install it using the following command:
+    >
+    > ```
+    > $ sudo yum install fontconfig
+    > ```
+
 5. Start the TiDB cluster.
 
     ```

diff --git a/op-guide/offline-ansible-deployment.md b/op-guide/offline-ansible-deployment.md
@@ -117,9 +117,18 @@ See [Orchestrate the TiDB cluster](ansible-deployment.md#orchestrate-the-tidb-cl
 
 ## Deploy the TiDB cluster
 
-1. See [Deploy the TiDB cluster](ansible-deployment.md#deploy-the-tidb-cluster).
-2. You do not need to run the `ansible-playbook local_prepare.yml` playbook again.
+1. You do not need to run the `ansible-playbook local_prepare.yml` playbook again.
+2. You can use the `Report` button on the Grafana Dashboard to generate the PDF file. This function depends on the `fontconfig` package. To use this function, download the [`fontconfig` offline installation package](https://download.pingcap.org/fontconfig-rpms.el7.tar.gz) and upload it to the `grafana_servers` machine to install.
+
+    ```
+    $ tar -xzvf fontconfig-rpms.el7.tar.gz
+    $ cd fontconfig-rpms.el7/offline_packages
+    $ chmod u+x install_fontconfig.sh
+    $ ./install_fontconfig.sh
+    ```
+
+3. Refer to [Deploy the TiDB cluster](ansible-deployment.md#deploy-the-tidb-cluster).
 
 ## Test the cluster
 
-See [Test the cluster](ansible-deployment.md#test-the-cluster).
+See [Test the cluster](ansible-deployment.md#test-the-cluster).