doc: update document for v2.2.2

docs/_posts/2021-03-19-release-v2.2.2.md

@@ -0,0 +1,55 @@
+---
+title: "v2.2.2 - Bug Fixed"
+date: 2021-03-19 21:54:00 +0900
+categories:
+  - Release
+tags:
+  - News
+  - Release
+head_inline: "<style> ul { padding-bottom: 1em; } .blue { color: blue; }</style>"
+---
+
+#### IMPORTANT Using v2.2.x
+
+- **DB Schema Changes:** If you are using an existing subscription DB, you should delete the existing DB. Then you can add a new subscription DB.
+{: .blue}
+```
+$ mongo
+> use open5gs
+switched to db open5gs
+> db.subscribers.drop()
+true
+```
+
+- **The New WebUI:** You have to log out using the old WebUI backend/frontend. Then, you can log back in again using the new WebUI backend/frontend.
+{: .blue}
+```
+$ git checkout v2.1.7
+$ cd webui
+$ rm -Rf ./node_modules
+$ npm ci --no-optional
+$ npm run dev
+
+## You should log out
+
+$ git checkout main
+$ cd webui
+$ rm -Rf ./node_modules
+$ npm ci --no-optional
+$ npm run dev
+
+## You can log back in
+```
+
+#### New Features
+- [EPC] Added E-RABModificationIndication/E-RABModificationConfirm ([#834](https://github.com/open5gs/open5gs/issues/834)) -- [alf-askey](https://github.com/alf-askey) 
+- [ALL] Advertising address for all SBI and GTP-U interfaces ([#825](https://github.com/open5gs/open5gs/issues/825)) -- [infinitydon](https://github.com/infinitydon) 
+
+#### Bug Fixes
+- [5GC] When PDR is created without deleting session, there is a bug to create new PDR. ([#860](https://github.com/open5gs/open5gs/issues/860)) -- [kbarlee](https://github.com/kbarlee) 
+- [NSSF] Add default NSI configuration for NSSF ([#859](https://github.com/open5gs/open5gs/issues/859)) -- [AniketTiw](https://github.com/AniketTiw) 
+- [MME] Fixed the MME crash during HandoverCancel without Target eNB ([#855](https://github.com/open5gs/open5gs/issues/855)) -- [kuanghanqian](https://github.com/kuanghanqian) 
+
+
+Download -- [v2.2.2.tar.gz](https://github.com/open5gs/open5gs/archive/v2.2.2.tar.gz)
+{: .notice--info}