This operation is offline installation, because the assigned server does not have access to the external network.
1. Download node's official address: https://nodejs.org/en/ Sometimes the official website can't be opened (don't know why, hehe...), I downloaded "node-v6.10.0-linux-x64.tar. xz" version and upload it to the server, because the final format of the version is.
2. Unzip the node
xz -d node-v6.10.0-linux-x64.tar.xz
3. Execute the above command to decompress the node-v6.10.0-linux-x64.tar file, we have to decompress it again
tar -zxvf node-v6.10.0-linux-x64.tar
4. Enter the decompressed node-v6.10.0-linux-x64/bin/ directory and check the version of node
node -v
5. Configure the environment
(1)Edit
# vim /etc/profile Need root privileges, no root privileges $ sudo vim /etc/profile
(2) Add the following configuration
export NODE_HOME=/home/shuang/software/node-v6.10.0-linux-x64 export PATH=$NODE_HOME/bin:$PATH
(3) Revalidate the configuration
# source /etc/profile I have also seen the following commands on the Internet, and the configuration takes effect, but I have not tried it without success, I don’t know why # . /etc/profile
(4) Verify that the node configuration is successful
node -v Execute the above command, if you can see the version information, it proves that the configuration is successful
6. Install pm2
I know that the way to install pm2 is "npm install -g pm2". Unfortunately, this is an online installation. I saw on the Internet that you can download pm2 separately and then configure the environment. The premise is that you have to have the corresponding installation package. What if you don't have a package yourself? My solution The method is to install it once under a linux system that can access the external network (how important it is to have a virtual machine -_- ), then find the installation package, package it and put it on the server to be installed. This is generally the case, Proceed as follows:
(1) First install and configure node according to the above steps
(2) Execute the command to install, the following command and figure:
npm install -g pm2
After the installation is successful, the picture is as follows: 
(3) Package pm2 to prepare for the server to be installed
In the above figure, you can see the path of our pm2 installation. After entering "node-v6.10.0-linux-x64/lib/node_modules", you can see the pm2 file directory and execute the packaging command
tar -zcvf pm2.tar.gz pm2
(4) Copy the packaged pm2 program to the server to be installed, and where to copy it, I think you should know it, that is, find the directory where you installed node before, that is, the directory where you operated node above, Also put it in the "node-v6.10.0-linux-x64/lib/node_modules" directory, and then extract it.
(5) Configure the pm2 environment
1. Edit the profile file # vim /etc/profile Need root privileges, no root privileges $ sudo vim /etc/profile 2. Add the following configuration export PM2_HOME=/home/app/node-v6.10.0-linux-x64/lib/node_modules/pm2 export PATH=$PM2_HOME/bin:$PATH 3. Execute the following command to take effect # source /etc/profile The # sign in front indicates that root privileges are required, if not sudo source /etc/profile
(6) Verify that pm2 is successfully installed
pm2 list
See literature:
http://blog.csdn.net/chenxiao_zhl/article/details/48180193
node and pm2 add-ons