Fix two additional flaky test sources in endtoend tests (vitessio#11743)

* Fix race in determining start port for cluster

The logic here is racy since multiple endtoend tests can create the file
at around the same time and allocate the same base port. This then leads
to flaky failing endtoend tests since not all ports can be used.

Even with the listening check later on, this is still racy because the
listen check might run at a later point still trying to allocate the
same port for the same service in different endtoend test.

This copies the Go filelock implementation, but only for unix systems
since that's the only supported platform for Vitess.

Go has a proposal open to make filelock available, but that is still
pending in golang/go#33974. Once that is
resolved, we can remove our copy of the implementation.

Signed-off-by: Dirkjan Bussink <[email protected]>

* Change range of dynamic ports to not collide with tests

Next to the previous commit which fixes the race base port computation,
we also need to avoid collisions between ephemeral outgoing ports to
127.0.0.1 and the listening ones.

The problem is that we set 1024 as the first ephemeral port, but that
means we can collide and trigger flaky tests with all the tests that
allocate a server port as well.

Given we start allocating server ports now starting at 6700 for endtoend
tests and we allocate in blocks of 200, we have room for 75+ concurrent
endtoend tests which should totally suffice.

We still have a range of 40+ ephemeral ports which should still be
sufficient as well.

Signed-off-by: Dirkjan Bussink <[email protected]>

Signed-off-by: Dirkjan Bussink <[email protected]>

.github/workflows/check_make_vtadmin_authz_testgen.yml

@@ -52,8 +52,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.vtadmin_changes == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
-
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
 
     - name: Get dependencies
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.vtadmin_changes == 'true'

.github/workflows/cluster_endtoend_12.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_13.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_15.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_18.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_21.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_22.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_ers_prs_newfeatures_heavy.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf
@@ -121,8 +123,6 @@ jobs:
 
         set -x
 
-        # Increase our local ephemeral port range as we could exhaust this
-        sudo sysctl -w net.ipv4.ip_local_port_range="22768 61999"
         # Increase our open file descriptor limit as we could hit this
         ulimit -n 65536
         cat <<-EOF>>./config/mycnf/mysql80.cnf

.github/workflows/cluster_endtoend_mysql80.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_mysql_server_vault.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_declarative.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_declarative_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_ghost.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_ghost_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_revert.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_revert_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_revertible.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_revertible_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_scheduler.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_scheduler_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_singleton.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_singleton_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_stress.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_stress_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_stress_suite.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_stress_suite_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_suite.yml

@@ -70,7 +70,9 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        # Limit local port range to not use ports that overlap with server side
+        # ports that we listen on.
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf

.github/workflows/cluster_endtoend_onlineddl_vrepl_suite_mysql57.yml

@@ -70,7 +70,7 @@ jobs:
     - name: Tune the OS
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.end_to_end == 'true'
       run: |
-        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
+        sudo sysctl -w net.ipv4.ip_local_port_range="22768 65535"
         # Increase the asynchronous non-blocking I/O. More information at https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_use_native_aio
         echo "fs.aio-max-nr = 1048576" | sudo tee -a /etc/sysctl.conf
         sudo sysctl -p /etc/sysctl.conf