updated README.md

xfanwu · Sep 17, 2019 · a4f513c · a4f513c
1 parent 24905c0
commit a4f513c
Showing 1 changed file with 16 additions and 6 deletions.
diff --git a/README.md b/README.md
@@ -4,22 +4,32 @@ https://aws.amazon.com/cli/
 
 https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-welcome.html
 
-## Get instance ID
+## Modify {INSTANCE_ID} in `changeIP.js` with yours
 
-`aws ec2 describe-instances | grep InstanceId`
+```javascript
 
-## Allocate IP
+CONST INSTANCE_ID = {yourInstanceId}
+
+```
+
+## Run the script
+
+`node changeIP.js`
+
+## How it works
+
+### 1. Allocate a new IP address
 
 `aws ec2 allocate-address`
 
-## Associate-address
+### 2. Associate the new IP
 
 `aws ec2 associate-address --instance-id i-05338ffd430e8e0e4 --public-ip {NEW_IP}`
 
-## Get old adresses
+### 3. Get the old address
 
 `aws ec2 describe-addresses | grep AllocationId`
 
-## Release adress
+### 4. Release the old address
 
 `aws ec2 release-address --allocation-id {OLD_IP}`