I am following this guide [Deploying a highly available MySQL 5.6 cluster with DRBD on Compute Engine]2
Although the guide is written for ubuntu-1604-lts, the GCP doesn't have any the image more (I think), so I changed it to ubuntu-1804-lts to continues the guide.
At the same time, I ran the Verify the status of DRBD: command as
sudo cat /proc/drbd | grep ============
It never return the output from the guide, which is:
[===================>] sync'ed:100.0% (208/307188)M
Since there is not nothing retuned, but when we cat the file(cat /proc/drbd), we get:
version: 8.4.7 (api:1/proto:86-101)
srcversion: F7D2F0C9036CD0E796D5958
0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r-----
ns:0 nr:6206288 dw:320880044 dr:0 al:8 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
Any point to find a updated guide or fix the issue of "status of DRBD:" Thank you.