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Merge pull request #85 from buildplan/fix_hostname

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Fix hostname
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buildplan 2025-11-25 21:52:35 +00:00 committed by GitHub
commit 30a77d43be
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3 changed files with 31 additions and 5 deletions
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4
README.md
View File

@ -87,12 +87,12 @@ sha256sum du_setup.sh
Compare the output hash to the one below. They must match exactly.
`0bb8006d79b07c73e265ef3e88057b9b937e7e2728b7a8e702d0818bdcdee402`
`8b5af9116fc95b7a3d281ea711f74bd3ea2bee25b0d68101b64fc5b67dbbed59`
Or echo the hash to check, it should output: `du_setup.sh: OK`
```bash
echo 0bb8006d79b07c73e265ef3e88057b9b937e7e2728b7a8e702d0818bdcdee402 du_setup.sh | sha256sum --check
echo 8b5af9116fc95b7a3d281ea711f74bd3ea2bee25b0d68101b64fc5b67dbbed59 du_setup.sh | sha256sum --check
```
### 3. Run the Script

30
du_setup.sh
View File

@ -3170,6 +3170,8 @@ configure_system() {
fi
print_info "Configuring hostname..."
# System Hostname
if [[ $(hostnamectl --static) != "$SERVER_NAME" ]]; then
hostnamectl set-hostname "$SERVER_NAME"
hostnamectl set-hostname "$PRETTY_NAME" --pretty
@ -3177,14 +3179,38 @@ configure_system() {
else
print_info "Hostname is already set to $SERVER_NAME."
fi
if [[ -f /etc/cloud/cloud.cfg ]]; then
if [[ -d /etc/cloud/cloud.cfg.d ]]; then
print_info "Disabling cloud-init host management via override file..."
echo "manage_etc_hosts: false" > /etc/cloud/cloud.cfg.d/99-du-setup-hosts.cfg
echo "preserve_hostname: true" >> /etc/cloud/cloud.cfg.d/99-du-setup-hosts.cfg
log "Created /etc/cloud/cloud.cfg.d/99-du-setup-hosts.cfg"
elif [[ -f /etc/cloud/cloud.cfg ]]; then
if grep -q "manage_etc_hosts: true" /etc/cloud/cloud.cfg; then
print_info "Disabling cloud-init 'manage_etc_hosts' to prevent overwrite..."
print_info "Disabling cloud-init 'manage_etc_hosts' in main config..."
sed -i 's/manage_etc_hosts: true/manage_etc_hosts: false/g' /etc/cloud/cloud.cfg
log "Disabled manage_etc_hosts in /etc/cloud/cloud.cfg"
fi
fi
# Stop cloud-init from overwriting /etc/hosts
local TEMPLATE_FILE=""
if [[ -n "$ID" && -f "/etc/cloud/templates/hosts.${ID}.tmpl" ]]; then
TEMPLATE_FILE="/etc/cloud/templates/hosts.${ID}.tmpl"
elif [[ -f "/etc/cloud/templates/hosts.tmpl" ]]; then
TEMPLATE_FILE="/etc/cloud/templates/hosts.tmpl"
fi
if [[ -n "$TEMPLATE_FILE" ]]; then
print_info "Patching cloud-init hosts template ($TEMPLATE_FILE) to enforce persistence..."
cp "$TEMPLATE_FILE" "$BACKUP_DIR/$(basename "$TEMPLATE_FILE").backup"
sed -i "s/^127.0.1.1.*/127.0.1.1\t$SERVER_NAME/g" "$TEMPLATE_FILE"
log "Hardcoded hostname into $TEMPLATE_FILE"
else
if [[ -d /etc/cloud/templates ]]; then
print_warning "Could not locate a standard hosts template in /etc/cloud/templates."
log "Warning: Cloud-init template patching skipped (no matching template found)."
fi
fi
if grep -q "^127.0.1.1" /etc/hosts; then
if ! grep -qE "^127.0.1.1[[:space:]]+$SERVER_NAME" /etc/hosts; then
sed -i "s/^127.0.1.1.*/127.0.1.1\t$SERVER_NAME/" /etc/hosts

2
du_setup.sh.sha256
View File

@ -1 +1 @@
0bb8006d79b07c73e265ef3e88057b9b937e7e2728b7a8e702d0818bdcdee402 du_setup.sh
8b5af9116fc95b7a3d281ea711f74bd3ea2bee25b0d68101b64fc5b67dbbed59 du_setup.sh