Prerequisites:
1 – Website registered with search console and submitted sitemap
2 – Server/vps/hosting that supports cronjob
I) Initialize and test ping sitemap to Google Search Console
The ping sitemap address to google is currently: http://google.com.vn/ping?sitemap={domainurl/sitemap.extension}
For example: https://notref.com/sitemap.xml -> ping sitemap would be: http://google.com.vn/ping?sitemap=https://notref.com/sitemap.xml
Results Google returns:
Received Sitemap Notice
Your Sitemap has been successfully added to our list of Sitemaps for crawling. If this is the first time you are notifying Google about this Sitemap, add it with http://www.google.com/webmasters/tools/ so you can track its status. Please note that we do not add all submitted URLs to our index and we cannot predict or guarantee the timing or whether they will appear..
Check by going to the search console to see if the number of urls has increased or not, if so, then it is considered a successful ping sitemap (of course, there must be a new url in the sitemap).
II) Set automatically ping/submit sitemap to Search Console
Simply create a Cronjob CURL to the ping sitemap link as step I, and set the ping time depending on the ability to produce articles from your website, here I will set the time to send requests to the search console every hour, so my cronjob looks like this:
0 * * * * curl http://google.com.vn/ping?sitemap=https://notref.com/sitemap.xml
How to install cronjob:
If you are using server/vps, type the command:
#export VISUAL=nano; crontab -e and enter
Paste the conjob above and press the key combination
Ctrl + O (to save) and Ctrl + X to exit, you will server/vps notification
crontab : installing new crontab installed successfully crontab
If you are using hosting controlpanel :
I will for example with DirectAdmin, Go to cronjob and enter the following content and click Add
OK, with other hosting control panels like Cpanel, Plesk...then you do the same, it only differs slightly in interface but the theory is no different
Okay, good luck!