[[_TOC_]]

## Installation Wiki.js

1. Follow the wiki.js instructions from https://docs.requarks.io/install/linux
1. Currently, we run the wiki service in screen.
1. Add 3000 port number in ```config.yml```
   ```yaml
   port: 3000
   db:
    type: sqlite
   ```
1. Add a port number of 3000 in the firewall
   ```bash
   sudo firewall-cmd --zone=public --add-port=3000/tcp --permanent
   sudo firewall-cmd --reload
   ```
1. Run ```node server```

### Backup
Daily Backups should be enabled, and the backup data are located in ```/local/wiki/backup```


### for Development

To develop REST API accessed to wiki.js, use the graphql playground.
* http://ddcode-srv1:3000/graphql

## Installation mmonit/monit for monitoring the server

1. Install monit(agent) and mmonit(web server) from https://mmonit.com/monit/ and https://mmonit.com/download/ respectively

2. Edit monit/conf/monitrc and copy ~/.monitrc to configure the communication with mmonit
```bash
  ## Check the apache server process
  check process apache with pidfile /var/run/httpd/httpd.pid
    if cpu > 60% for 2 cycles then alert
    if cpu > 80% for 5 cycles then alert
    if totalmem > 200.0 MB for 5 cycles then alert
    if children > 250 then alert
    if disk read > 500 kb/s for 10 cycles then alert
    if disk write > 500 kb/s for 10 cycles then alert
    if 3 restarts within 5 cycles then unmonitor
    group server

  ## Check the shiny server process
  check process shiny with pidfile /var/run/shiny-server/shiny-server.pid
    if cpu > 60% for 2 cycles then alert
    if cpu > 80% for 5 cycles then alert
    if totalmem > 2000.0 MB for 5 cycles then alert
    if children > 250 then alert
    if disk read > 500 kb/s for 10 cycles then alert
    if disk write > 500 kb/s for 10 cycles then alert
    if 3 restarts within 5 cycles then unmonitor
    group server
```

3. Edit mmonit/conf/server.xml to communicate with in the localhost
```bash
<Connector address="localhost" port="8080" processors="10" /> # For only local communication
<Connector address="*" port="8080" processors="10" />         # For all users in public
```

4. Run mmonit and monit
```bash
mmonit start
monit start
```