Difference between revisions of "Checks After Failover Setup"
From Roaring Penguin
| Line 1: | Line 1: | ||
| − | ===Checking WAL File Streaming== | + | ===Check Email is Flowing=== |
| + | On (all) the scanner(s) run the following: | ||
| + | tail -f /var/log/mail-daily/current.log | ||
| + | It should be obvious if mail is flowing. | ||
| + | ===Checking WAL File Streaming=== | ||
You can check if WAL data is streaming by running on the primary this | You can check if WAL data is streaming by running on the primary this | ||
command: | command: | ||
| Line 13: | Line 17: | ||
On the backup database run: | On the backup database run: | ||
| − | ps | + | watch -d 'ps auxww| grep "[p]ostgres: startup" |
| + | You should see something like: | ||
| + | postgres 39942 0.0 0.6 101408 27488 ? Ss 15:23 0:02 postgres: startup process recovering 000000070000026E0000006A | ||
| + | Where the last few digits change over very slowly over several minutes. This shows WAL files being consumed. | ||
<div style="float:right; clear:both; margin-right:0.5em">[[Support Wiki | [Home]]]</div> | <div style="float:right; clear:both; margin-right:0.5em">[[Support Wiki | [Home]]]</div> | ||
[[category:All]][[category:Troubleshooting]][[category:Setup]] | [[category:All]][[category:Troubleshooting]][[category:Setup]] | ||
Revision as of 16:46, 1 November 2017
Check Email is Flowing
On (all) the scanner(s) run the following:
tail -f /var/log/mail-daily/current.log
It should be obvious if mail is flowing.
Checking WAL File Streaming
You can check if WAL data is streaming by running on the primary this command:
watch -d 'ps auxww|grep [s]treaming'
You will see something like this:
postgres 25972 0.2 0.1 103012 4912 ? Ss 15:24 0:09 postgres: wal sender process postgres 192.168.190.120(54248) streaming 26E/6A01AEF0
Where the last few hex digits will be changing if things are okay. (They will change fast on a busy system and possibly very slowly on a lightly-loaded one.)
Check
On the backup database run:
watch -d 'ps auxww| grep "[p]ostgres: startup"
You should see something like:
postgres 39942 0.0 0.6 101408 27488 ? Ss 15:23 0:02 postgres: startup process recovering 000000070000026E0000006A
Where the last few digits change over very slowly over several minutes. This shows WAL files being consumed.
