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cloudron-support: improved dns check

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This commit is contained in:
Girish Ramakrishnan
2024-08-20 16:51:56 +02:00
parent 0ed9105a05
commit cebaa71ce1
1 changed files with 42 additions and 23 deletions
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65
scripts/cloudron-support
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@@ -19,16 +19,18 @@ readonly HELP_MESSAGE="
Cloudron Support and Diagnostics Tool
Options:
--disable-dnssec Disable DNSSEC
--enable-remote-access Enable SSH Remote Access for the Cloudron support team
--patch Apply a patch from git. WARNING: Do not use unless you know what you are doing!
--recreate-containers Deletes all existing containers and recreates them without loss of data
--recreate-docker Deletes docker storage (containers and images) and recreates it without loss of data
--send-diagnostics Collects server diagnostics and uploads it to ${PASTEBIN}
--troubleshoot Dashboard down? Run tests to identify the potential problem
--owner-login Login as owner
--use-external-dns Forwards all DNS requests to Google (8.8.8.8) and Cloudflare (1.1.1.1) DNS servers
--help Show this message
--disable-dnssec Disable DNSSEC
--enable-remote-access Enable SSH Remote Access for the Cloudron support team
--patch Apply a patch from git. WARNING: Do not use unless you know what you are doing!
--recreate-containers Deletes all existing containers and recreates them without loss of data
--recreate-docker Deletes docker storage (containers and images) and recreates it without loss of data
--send-diagnostics Collects server diagnostics and uploads it to ${PASTEBIN}
--troubleshoot Dashboard down? Run tests to identify the potential problem
--owner-login Login as owner
--unbound-use-external-dns Forwards all Unbound requests to Google (8.8.8.8) and Cloudflare (1.1.1.1) DNS servers.
Unbound is the internal DNS server used for recursive DNS queries. This is only needed
if your network does not allow outbound DNS requests.
--help Show this message
"
function success() {
@@ -133,11 +135,10 @@ function check_netplan() {
fi
if [[ -z "${output}" ]]; then
fail "netplan configuration is empty"
exit 1
warn "netplan configuration is empty. this might be OK depending on your networking setup"
else
success "netplan is good"
fi
success "netplan is good"
}
function owner_login() {
@@ -217,13 +218,31 @@ function send_diagnostics() {
}
function check_dns() {
if ! host cloudron.io &>/dev/null; then
fail "DNS is not resolving"
host cloudron.io
exit 1
if host cloudron.io &>/dev/null; then
success "DNS is resolving via systemd-resolved"
return
fi
success "DNS is resolving via systemd-resolved"
if ! systemctl is-active -q systemd-resolved; then
warn "systemd-resolved is not in use. see 'systemctl status systemd-resolved'"
fi
if [[ -L /etc/resolv.conf ]]; then
target=$(readlink /etc/resolv.conf)
if [[ "$target" != *"/run/systemd/resolve/stub-resolv.conf" ]]; then
warn "/etc/resolv.conf is symlinked to $target instead of '../run/systemd/resolve/stub-resolv.conf'"
fi
else
warn "/etc/resolv.conf is not symlinked to '../run/systemd/resolve/stub-resolv.conf'"
fi
if ! grep -q "^nameserver 127.0.0.53" /etc/resolv.conf; then
warn "/etc/resolv.conf is not using systemd-resolved. it is missing the line 'nameserver 127.0.0.53'"
fi
fail "DNS is not resolving"
host cloudron.io || true
exit 1
}
function check_unbound() {
@@ -244,7 +263,7 @@ function check_unbound() {
fi
if ! host cloudron.io 127.0.0.150 &>/dev/null; then
fail "Unbound is not resolving, maybe try forwarding all DNS requests. You can do this by running 'cloudron-support --use-external-dns' option"
fail "Unbound is not resolving, maybe try forwarding all DNS requests. You can do this by running 'cloudron-support --unbound-use-external-dns' option"
host cloudron.io 127.0.0.150
exit 1
fi
@@ -430,7 +449,7 @@ function check_expired_domain() {
success "Domain ${dashboard_domain} is valid and has not expired"
}
function use_external_dns() {
function unbount_use_external_dns() {
local -r conf_file="/etc/unbound/unbound.conf.d/forward-everything.conf"
info "To remove the forwarding, please delete $conf_file and 'systemctl restart unbound'"
@@ -658,7 +677,7 @@ function apply_patch() {
check_disk_space
args=$(getopt -o "" -l "admin-login,disable-dnssec,enable-ssh,enable-remote-access,help,owner-login,patch:,recreate-containers,recreate-docker,send-diagnostics,use-external-dns,troubleshoot" -n "$0" -- "$@")
args=$(getopt -o "" -l "admin-login,disable-dnssec,enable-ssh,enable-remote-access,help,owner-login,patch:,recreate-containers,recreate-docker,send-diagnostics,unbound-use-external-dns,troubleshoot" -n "$0" -- "$@")
eval set -- "${args}"
while true; do
@@ -674,7 +693,7 @@ while true; do
--send-diagnostics) send_diagnostics; exit 0;;
--troubleshoot) troubleshoot; exit 0;;
--disable-dnssec) disable_dnssec; exit 0;;
--use-external-dns) use_external_dns; exit 0;;
--unbound-use-external-dns) unbound_use_external_dns; exit 0;;
--recreate-containers) recreate_containers; exit 0;;
--recreate-docker) recreate_docker; exit 0;;
--patch) apply_patch "$2"; exit 0;;