Opened 8 months ago

Closed 3 months ago

#32803 closed task (fixed)

migrate eugeni to the gnt-fsn cluster

Reported by: anarcat Owned by: weasel
Priority: High Milestone:
Component: Internal Services/Tor Sysadmin Team Version:
Severity: Major Keywords: tpa-roadmap-may
Cc: Actual Points:
Parent ID: #32802 Points:
Reviewer: Sponsor:

Description

This is a big decision, but we might want to consider migrating eugeni out of kvm4 in the short term.

This server is highly critical: it handles incoming mail and mailing lists, and any downtime on that server is felt quickly by everyone in the Tor project.

Even though the gnt-fsn server is over-provisionned, it is technically more reliable than a single machine like kvm4 because it has redundant nodes. We might be able to afford the extra space to host eugeni right now.

The risk, of course, is that eugeni is an old server that is very important infrastructure. Migrating it might be tricky. For example its IP address might be hardcoded in a bunch of places, and moving it to the gnt-fsn will mean changing that IP address.

Such an IP change might also affect its reputation with other mail servers, making mail delivery even harder than it already is.

But we have to cross that bridge anyways with the new SMTP delivery service in #30608.

Child Tickets

Change History (9)

comment:1 Changed 7 months ago by anarcat

Keywords: tpa-roadmap-march added

comment:2 Changed 5 months ago by anarcat

Keywords: tpa-roadmap-april added; tpa-roadmap-march removed

it's very unlikely we'll have the cycles to do this in march. we should do a few more migrations before taking a critical one as this one.

comment:3 Changed 3 months ago by anarcat

Keywords: tpa-roadmap-may added; tpa-roadmap-april removed

comment:4 Changed 3 months ago by anarcat

Owner: changed from tpa to anarcat
Status: newassigned

comment:5 Changed 3 months ago by anarcat

this poor child should be given more memory when it migrates - it only has 1GB and is swapping up to its 12% iowait (30-day average!). 4GiB should be okay.

comment:6 Changed 3 months ago by weasel

Resolution: fixed
Status: assignedclosed

moved and upgraded

comment:7 Changed 3 months ago by anarcat

Resolution: fixed
Status: closedreopened

reassigning to weasel, who did all that work

comment:8 Changed 3 months ago by anarcat

Owner: changed from anarcat to weasel
Status: reopenedassigned

comment:9 Changed 3 months ago by anarcat

Resolution: fixed
Status: assignedclosed
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