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docs: wait for the dpkg lock before the scripted deb install #4330

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docs: wait for the dpkg lock before the scripted deb install #4330

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3 changes: 3 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -8,6 +8,9 @@ All notable changes to this project will be documented in this file.

### Changes

- Client
- `client/INSTALL.md`'s scripted deb install now waits for the dpkg lock first: on a freshly-booted Ubuntu host, `unattended-upgrades` can hold `/var/lib/dpkg/lock-frontend` for several minutes, and the Cloudsmith setup script redirects `apt-get`'s output to a log file, so the wait looked like a hang with zero feedback. (#3540)

## [v0.40.0](https://github.com/malbeclabs/doublezero/compare/client/v0.39.0...client/v0.40.0) - 2026-09-11

### Breaking
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9 changes: 9 additions & 0 deletions client/INSTALL.md
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Expand Up @@ -7,7 +7,16 @@ The DoubleZero client can be either installed as a apt/deb or rpm package or bui
### Add Debian/APT Repository

#### Scripted Install

On a freshly-booted host, `unattended-upgrades` can hold the dpkg lock for several minutes. The
setup script below redirects `apt-get`'s output to a log file, so it silently waits on that lock
with no visible progress — it isn't hung, just quiet. Wait for the lock first so you see what's
happening:
```
$ while sudo fuser /var/lib/dpkg/lock-frontend >/dev/null 2>&1; do
echo "waiting for apt lock (likely unattended-upgrades)..."; sleep 2
done

$ curl -1sLf \
'https://dl.cloudsmith.io/public/malbeclabs/doublezero/setup.deb.sh' \
| sudo -E bash
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