no more slave

README.md

@@ -8,6 +8,28 @@ They were often quickly hacked and poorly tested.
 
 🚨🚨🚨 No warranty or support! 🚨🚨🚨
 
+## MySQL
+
+* `check_replication_status.sh` - Check MySQL 8.0 replication status and send email on error
+* `check_replication_status_hc.sh` - Check MySQL 8.0 replication status and ping [healthchecks.io](https://healthchecks.io/)
+
+Used in Ansible Playbook:
+```yml
+# Check MySQL 8.0 replication and ping to healthchecks.io
+- name: Script - Check status and ping healthchecks.io
+  ansible.builtin.get_url:
+    url: https://raw.githubusercontent.com/Cyclenerd/toolbox/master/check_replication_status_hc.sh
+    dest: /root/check_replication_status_hc.sh
+    mode: '0755'
+    owner: root
+    group: root
+- name: Script - Change healthchecks.io UUID
+  ansible.builtin.lineinfile:
+    path: /root/check_replication_status_hc.sh
+    regexp: '^MY_HC_ID'
+    line: "MY_HC_ID='{{ healthchecks_uuid }}'"
+```
+
 ## License
 
 GNU Public License version 3.

check_replication_status.sh

@@ -1,55 +1,44 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-# check_replication_status.sh - Check MySQL Replication
+# check_replication_status.sh
+#
+# Check MySQL 8.0 replication status and send email on error
+#
 # Author: Nils Knieling - https://github.com/Cyclenerd
 # Source: https://handyman.dulare.com/mysql-replication-status-alerts-with-bash-script/
 
-#
 # Send alert to this email (root@localhost it always CC)
-#
 MY_MAIL_TO='nils@localhost'
+# Maximum number of seconds behind master
+MY_MAX_SEC_BEHIND=30
 
-#
-# Set the maximum number of seconds behind master that will be ignored.
-# If the slave is be more than MY_MAX_SEC_BEHIND, an email will be sent.
-#
-MY_MAX_SEC_BEHIND=300
-
-#
 # Checking MySQL replication status
 # Set username and password in .my.cnf
-if mysql -e 'SHOW SLAVE STATUS \G' | grep 'Running:\|Master:\|Error:' > "/tmp/mysql_replication_status.txt"; then
-    echo "Login successful"
-else
+if ! mysql -e 'SHOW REPLICA STATUS \G' | grep 'Running:\|Source:\|Error:' > "/tmp/mysql_replication_status.txt"; then
     echo "Login failed" > "/tmp/mysql_replication_status.txt"
 fi
 
-#
 # displaying results, just in case you want to see them
-#
 echo "Results:"
 cat "/tmp/mysql_replication_status.txt"
 
-#
 # checking parameters
-#
-slaveRunning=$(grep -c "Slave_IO_Running: Yes" "/tmp/mysql_replication_status.txt")
-slaveSQLRunning=$(grep -c "Slave_SQL_Running: Yes" "/tmp/mysql_replication_status.txt")
-secondsBehind="$(grep "Seconds_Behind_Master" "/tmp/mysql_replication_status.txt" | tr -dc '0-9')"
+MY_REPLICA_IO_RUNNING=$(grep -c "Replica_IO_Running: Yes" "/tmp/mysql_replication_status.txt")
+MY_REPLICA_SQL_RUNNING=$(grep -c "Replica_SQL_Running: Yes" "/tmp/mysql_replication_status.txt")
+MY_SECONDS_BEHIND_SOURCE=$(grep "Seconds_Behind_Source" "/tmp/mysql_replication_status.txt" | tr -dc '0-9')
 
 echo
-echo "slaveRunning    : $slaveRunning"
-echo "slaveSQLRunning : $slaveSQLRunning"
-echo "secondsBehind   : $secondsBehind"
+echo "Replica_IO_Running    : $MY_REPLICA_IO_RUNNING"
+echo "Replica_SQL_Running   : $MY_REPLICA_SQL_RUNNING"
+echo "Seconds_Behind_Source : $MY_SECONDS_BEHIND_SOURCE"
+echo
 
-#
 # Sending email if needed
-#
-if [[ $slaveRunning != 1 || $slaveSQLRunning != 1 || $secondsBehind -gt $MY_MAX_SEC_BEHIND ]]; then
-    echo ""
-    echo "Sending email"
+if [[ $MY_REPLICA_IO_RUNNING != 1 || $MY_REPLICA_SQL_RUNNING != 1 || $MY_SECONDS_BEHIND_SOURCE -gt $MY_MAX_SEC_BEHIND ]]; then
+    # Error
+    echo "Error"
     mutt -s "MySQL: Replication Error - $(hostname)" -c "root@localhost" "$MY_MAIL_TO" < "/tmp/mysql_replication_status.txt"
 else
-    echo ""
+    # OK
     echo "Replication looks fine."
 fi

check_replication_status_hc.sh

@@ -1,18 +1,20 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-# check_replication_status_hc.sh - Check MySQL Replication and send status to healthchecks.io
+# check_replication_status_hc.sh
+#
+# Check MySQL 8.0 replication status and ping healthchecks.io
+#
 # Author: Nils Knieling - https://github.com/Cyclenerd
 # Source: https://handyman.dulare.com/mysql-replication-status-alerts-with-bash-script/
 
 # healthchecks.io UUID
-MY_HC_ID=''
-
+MY_HC_ID=""
 # Maximum number of seconds behind master
-MY_MAX_SEC_BEHIND=300
+MY_MAX_SEC_BEHIND=30
 
 # Checking MySQL replication status
 # Set username and password in .my.cnf
-if ! mysql -e 'SHOW SLAVE STATUS \G' | grep 'Running:\|Master:\|Error:' > "/tmp/mysql_replication_status_hc.txt"; then
+if ! mysql -e 'SHOW REPLICA STATUS \G' | grep 'Running:\|Source:\|Error:' > "/tmp/mysql_replication_status_hc.txt"; then
     echo "Login failed" > "/tmp/mysql_replication_status_hc.txt"
 fi
 
@@ -21,18 +23,18 @@ echo "Results:"
 cat "/tmp/mysql_replication_status_hc.txt"
 
 # checking parameters
-slaveRunning=$(grep -c "Slave_IO_Running: Yes" "/tmp/mysql_replication_status_hc.txt")
-slaveSQLRunning=$(grep -c "Slave_SQL_Running: Yes" "/tmp/mysql_replication_status_hc.txt")
-secondsBehind="$(grep "Seconds_Behind_Master" "/tmp/mysql_replication_status_hc.txt" | tr -dc '0-9')"
+MY_REPLICA_IO_RUNNING=$(grep -c "Replica_IO_Running: Yes" "/tmp/mysql_replication_status_hc.txt")
+MY_REPLICA_SQL_RUNNING=$(grep -c "Replica_SQL_Running: Yes" "/tmp/mysql_replication_status_hc.txt")
+MY_SECONDS_BEHIND_SOURCE=$(grep "Seconds_Behind_Source" "/tmp/mysql_replication_status_hc.txt" | tr -dc '0-9')
 
 echo
-echo "slaveRunning    : $slaveRunning"
-echo "slaveSQLRunning : $slaveSQLRunning"
-echo "secondsBehind   : $secondsBehind"
+echo "Replica_IO_Running    : $MY_REPLICA_IO_RUNNING"
+echo "Replica_SQL_Running   : $MY_REPLICA_SQL_RUNNING"
+echo "Seconds_Behind_Source : $MY_SECONDS_BEHIND_SOURCE"
 echo
 
 # Send status to healthchecks.io
-if [[ $slaveRunning != 1 || $slaveSQLRunning != 1 || $secondsBehind -gt $MY_MAX_SEC_BEHIND ]]; then
+if [[ $MY_REPLICA_IO_RUNNING != 1 || $MY_REPLICA_SQL_RUNNING != 1 || $MY_SECONDS_BEHIND_SOURCE -gt $MY_MAX_SEC_BEHIND ]]; then
     # Error
     echo "Error"
     curl -fsS -m 10 --retry 5 -o /dev/null "https://hc-ping.com/$MY_HC_ID/fail"