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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 17:20:00 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 17:20:00 +0000 |
commit | 8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch) | |
tree | 4099e8021376c7d8c05bdf8503093d80e9c7bad0 /ctdb/tests/CLUSTER/complex/18_ctdb_reloadips.sh | |
parent | Initial commit. (diff) | |
download | samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip |
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rwxr-xr-x | ctdb/tests/CLUSTER/complex/18_ctdb_reloadips.sh | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/ctdb/tests/CLUSTER/complex/18_ctdb_reloadips.sh b/ctdb/tests/CLUSTER/complex/18_ctdb_reloadips.sh new file mode 100755 index 0000000..150aeea --- /dev/null +++ b/ctdb/tests/CLUSTER/complex/18_ctdb_reloadips.sh @@ -0,0 +1,257 @@ +#!/bin/bash + +# Verify that adding/deleting IPs using 'ctdb reloadips' works + +# Checks that when IPs are added to and deleted from a single node then +# those IPs are actually assigned and unassigned from the specified +# interface. + +# Prerequisites: + +# * An active CTDB cluster with public IP addresses configured + +# Expected results: + +# * When IPs are added to a single node then they are assigned to an +# interface. + +# * When IPs are deleted from a single node then they disappear from an +# interface. + +. "${TEST_SCRIPTS_DIR}/cluster.bash" + +set -e + +ctdb_test_init + +select_test_node_and_ips + +#################### + +# Search for an unused 10.B.1.0/24 network on which to add public IP +# addresses. + +# The initial search is for a 10.B.0.0/16 network since some +# configurations may use a whole class B for the private network. +# Check that there are no public IP addresses (as reported by "ctdb ip +# all") or other IP addresses (as reported by "ip addr show") with +# the provided prefix. Note that this is an IPv4-specific test. + +echo "Getting public IP information from CTDB..." +ctdb_onnode "$test_node" "ip -X -v all" +ctdb_ip_info=$(awk -F'|' 'NR > 1 { print $2, $3, $5 }' "$outfile") + +echo "Getting IP information from interfaces..." +try_command_on_node all "ip addr show" +ip_addr_info=$(awk '$1 == "inet" { ip = $2; sub(/\/.*/, "", ip); print ip }' \ + "$outfile") + +prefix="" +for b in $(seq 0 255) ; do + prefix="10.${b}" + + # Does the prefix match any IP address returned by "ip addr info"? + while read ip ; do + if [ "${ip#${prefix}.}" != "$ip" ] ; then + prefix="" + continue 2 + fi + done <<<"$ip_addr_info" + + # Does the prefix match any public IP address "ctdb ip all"? + while read ip pnn iface ; do + if [ "${ip#${prefix}.}" != "$ip" ] ; then + prefix="" + continue 2 + fi + done <<<"$ctdb_ip_info" + + # Got through the IPs without matching prefix - done! + break +done + +[ -n "$prefix" ] || die "Unable to find a usable IP address prefix" + +# We really want a class C: 10.B.1.0/24 +prefix="${prefix}.1" + +#################### + +iface=$(echo "$ctdb_ip_info" | awk -v pnn=$test_node '$2 == pnn { print $3 ; exit }') + +#################### + +# This needs to be set only on the recmaster. All nodes should do the trick. +new_takeover_timeout=90 +echo "Setting TakeoverTimeout=${new_takeover_timeout} to avoid potential bans" +try_command_on_node all "$CTDB setvar TakeoverTimeout ${new_takeover_timeout}" + +#################### + +try_command_on_node $test_node $CTDB_TEST_WRAPPER ctdb_base_show +addresses="${out}/public_addresses" +echo "Public addresses file on node $test_node is \"$addresses\"" +backup="${addresses}.$$" + +backup_public_addresses () +{ + try_command_on_node $test_node "cp -a $addresses $backup" +} + +restore_public_addresses () +{ + try_command_on_node $test_node "mv $backup $addresses >/dev/null 2>&1 || true" +} +ctdb_test_exit_hook_add restore_public_addresses + +# Now create that backup +backup_public_addresses + +#################### + +add_ips_to_original_config () +{ + local test_node="$1" + local addresses="$2" + local iface="$3" + local prefix="$4" + local first="$5" + local last="$6" + + echo "Adding new public IPs to original config on node ${test_node}..." + echo "IPs will be ${prefix}.${first}/24..${prefix}.${last}/24" + + # Implement this by completely rebuilding the public_addresses + # file. This is easier than deleting entries on a remote node. + restore_public_addresses + backup_public_addresses + + # Note that tee is a safe way of creating a file on a remote node. + # This avoids potential fragility with quoting or redirection. + for i in $(seq $first $last) ; do + echo "${prefix}.${i}/24 ${iface}" + done | + try_command_on_node -i $test_node "tee -a $addresses" +} + +check_ips () +{ + local test_node="$1" + local iface="$2" + local prefix="$3" + local first="$4" + local last="$5" + + # If just 0 specified then this is an empty range + local public_ips_file=$(mktemp) + if [ "$first" = 0 -a -z "$last" ] ; then + echo "Checking that there are no IPs in ${prefix}.0/24" + else + local prefix_regexp="inet *${prefix//./\.}" + + echo "Checking IPs in range ${prefix}.${first}/24..${prefix}.${last}/24" + + local i + for i in $(seq $first $last) ; do + echo "${prefix}.${i}" + done | sort >"$public_ips_file" + fi + + try_command_on_node $test_node "ip addr show dev ${iface}" + local ip_addrs_file=$(mktemp) + cat "$outfile" | \ + sed -n -e "s@.*inet * \(${prefix//./\.}\.[0-9]*\)/.*@\1@p" | \ + sort >"$ip_addrs_file" + + local diffs=$(diff "$public_ips_file" "$ip_addrs_file") || true + rm -f "$ip_addrs_file" "$public_ips_file" + + if [ -z "$diffs" ] ; then + echo "GOOD: IP addresses are as expected" + else + echo "BAD: IP addresses are incorrect:" + echo "$diffs" + exit 1 + fi +} + +# ctdb reloadips will fail if it can't disable takover runs. The most +# likely reason for this is that there is already a takeover run in +# progress. We can't predict when this will happen, so retry if this +# occurs. +do_ctdb_reloadips () +{ + local retry_max=10 + local retry_count=0 + while : ; do + if try_command_on_node "$test_node" "$CTDB reloadips" ; then + return 0 + fi + + if [ "$out" != "Failed to disable takeover runs" ] ; then + return 1 + fi + + if [ $retry_count -ge $retry_max ] ; then + return 1 + fi + + retry_count=$((retry_count + 1)) + echo "Retrying..." + sleep_for 1 + done +} + +#################### + +new_ip_max=100 + +#################### + +add_ips_to_original_config \ + $test_node "$addresses" "$iface" "$prefix" 1 $new_ip_max + +do_ctdb_reloadips + +check_ips $test_node "$iface" "$prefix" 1 $new_ip_max + +ctdb_onnode "$test_node" sync + +#################### + +# This should be the primary. Ensure that no other IPs are lost +echo "Using 'ctdb reloadips' to remove the 1st address just added..." + +add_ips_to_original_config \ + $test_node "$addresses" "$iface" "$prefix" 2 $new_ip_max + +do_ctdb_reloadips + +check_ips $test_node "$iface" "$prefix" 2 $new_ip_max + +ctdb_onnode "$test_node" sync + +#################### + +# Get rid of about 1/2 the IPs +start=$(($new_ip_max / 2 + 1)) +echo "Updating to include only about 1/2 of the new IPs..." + +add_ips_to_original_config \ + $test_node "$addresses" "$iface" "$prefix" $start $new_ip_max + +do_ctdb_reloadips + +check_ips $test_node "$iface" "$prefix" $start $new_ip_max + +ctdb_onnode "$test_node" sync + +#################### + +# Delete the rest +echo "Restoring original IP configuration..." +restore_public_addresses + +do_ctdb_reloadips + +check_ips $test_node "$iface" "$prefix" 0 |