Skip to content

Fall back to public DNS for Alpine containers too #231

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
michelroegl-brunner merged 1 commit into from
Nov 12, 2026
+9 −0
Merged

Fall back to public DNS for Alpine containers too #231

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions incus/backend.func
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1037,6 +1037,10 @@ incus_customize_container() {
http://dl-cdn.alpinelinux.org/alpine/${alpine_rel}/main
http://dl-cdn.alpinelinux.org/alpine/${alpine_rel}/community
EOF"
if ! incus_ct_exec /bin/sh -c 'getent hosts dl-cdn.alpinelinux.org >/dev/null 2>&1'; then
msg_warn "Alpine repository DNS resolution failed in container, injecting public DNS servers"
incus_ct_exec /bin/sh -c 'printf "nameserver 8.8.8.8\nnameserver 1.1.1.1\n" >/etc/resolv.conf'
fi
incus_ct_exec ash -c "apk add bash newt curl openssh nano mc ncurses jq >/dev/null" || msg_warn "Alpine base package install had issues"
elif [[ "${var_os:-debian}" =~ ^(debian|ubuntu|devuan)$ ]]; then
sleep 2
Expand Down
5 changes: 5 additions & 0 deletions pve/backend.func
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1192,6 +1192,11 @@ EOF
https://dl-cdn.alpinelinux.org/alpine/latest-stable/main
https://dl-cdn.alpinelinux.org/alpine/latest-stable/community
EOF'
# As for Debian below: with a dead resolver every mirror fails alike.
if ! pct exec "$CTID" -- /bin/sh -c 'getent hosts dl-cdn.alpinelinux.org >/dev/null 2>&1'; then
msg_warn "Alpine repository DNS resolution failed in container, injecting public DNS servers"
pct exec "$CTID" -- /bin/sh -c 'printf "nameserver 8.8.8.8\nnameserver 1.1.1.1\n" >/etc/resolv.conf'
fi
_cs_shield_hangup pct exec "$CTID" -- ash -c 'set -a; [ -f /etc/profile.d/90-http-proxy.sh ] && . /etc/profile.d/90-http-proxy.sh; set +a; apk add bash newt curl openssh nano mc ncurses jq' >>"$BUILD_LOG" 2>&1 || {
msg_warn "apk install failed (dl-cdn.alpinelinux.org), trying alternate mirrors..."
local alpine_exit=0
Expand Down
Loading