Added galera

Galera/LB.conf

@@ -0,0 +1,24 @@
+stream {
+
+    # Define all gluster nodes
+    upstream gluster_nodes {
+        # least_conn;
+        hash $remote_addr consistent;
+        server <GALERA_NODE>:3306;  # fail_timeout=5s
+        server <GALERA_NODE>:3306;  # fail_timeout=5s
+        server <GALERA_NODE>:3306;  # fail_timeout=5s
+        server <GALERA_NODE>:3306;  # fail_timeout=5s
+    }
+
+    # TCP traffic to gluster nodes
+    server {
+        listen 3306;
+        proxy_pass gluster_nodes;
+        proxy_bind <LB_IP> transparent;
+        # proxy_bind $remote_addr transparent;
+        # proxy_protocol    on;
+        # set_real_ip_from  $proxy_protocol_addr;
+    }
+
+
+}

Galera/README

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+user for running script:
+keepaliveddd 
+
+
+sudo adduser keepaliveddd
+
+<SOME_SUPER_SECURE_PASSWORD>
+
+#Galera nodes    
+'''
+sudo apt install galera-4 mariadb-server
+'''
+
+#Load balancers
+'''
+sudo apt install keepalived nginx
+'''
+
+
+Of course change what needs to be changed in config files.

Galera/chck_nginx.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+check=$(pidof nginx)
+
+if [ -z $check ]; then
+    exit 1
+
+else :
+    exit 0
+    
+fi

Galera/keepalived/GLUSTER-LB-NODE-1.conf

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+global_defs {
+    enable_script_security
+    script_user keepaliveddd
+}
+
+vrrp_script track_nginx {
+    script "/etc/keepalived/chck_nginx.sh"
+    interval 10
+}
+
+vrrp_instance GLUSTER-LB {
+    state MASTER
+    interface eth1
+    virtual_router_id 30
+    priority 100
+    advert_int 1
+
+    unicast_src_ip <MASTER_NODE_IP>
+    unicast_peer {
+        <BACKUP_NODE_IP>
+    }
+
+    authentication {
+        auth_type PASS
+        auth_pass <CHANGE_TO_8-CHARACTER_PASSWORD>
+    }
+
+    track_script {
+        track_nginx
+    }
+
+    virtual_ipaddress {
+        <VIP>/<MASK> dev <DMZ_NIC>
+    }
+
+}

Galera/keepalived/GLUSTER-LB-NODE-2.conf

@@ -0,0 +1,38 @@
+global_defs {
+    enable_script_security
+    script_user keepaliveddd
+}
+
+vrrp_script track_nginx {
+    script "/etc/keepalived/chck_nginx.sh"
+    interval 10
+}
+
+vrrp_instance GLUSTER-LB {
+    state BACKUP
+    interface <KAD_NET>
+    virtual_router_id 10
+    priority 95
+    advert_int 1
+
+    unicast_src_ip <NODE_IP>
+    unicast_peer {
+        <BACKUP_NODE_IP>
+    }
+
+    authentication {
+        auth_type PASS
+        auth_pass <CHANGE_TO_8-CHARACTER_PASSWORD>
+    }
+
+
+    track_script {
+        track_nginx
+    }
+
+    virtual_ipaddress {
+        <VIP>/<MASK> dev <DMZ_NIC>
+    }
+
+}
+

Galera/keepalived/GLUSTER-LB-NODE-3.conf

@@ -0,0 +1,36 @@
+global_defs {
+    enable_script_security
+    script_user keepaliveddd
+}
+
+vrrp_script track_nginx {
+    script "/etc/keepalived/chck_nginx.sh"
+    interval 10
+}
+
+vrrp_instance GLUSTER-LB {
+    state BACKUP
+    interface <KAD_NET>
+    virtual_router_id 10
+    priority 90
+    advert_int 1
+
+    unicast_src_ip <NODE_IP>
+    unicast_peer {
+        <BACKUP_NODE_IP>
+    }
+
+    authentication {
+        auth_type PASS
+        auth_pass <CHANGE_TO_8-CHARACTER_PASSWORD>
+    }
+
+    track_script {
+        track_nginx
+    }
+
+    virtual_ipaddress {
+        <VIP>/<MASK> dev <DMZ_NIC>
+    }
+
+}

Galera/mariadb_conf/GLUSTER-NODE-1.cnf

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+# vim  /etc/mysql/conf.d/galera.cnf
+
+[mysqld]
+binlog_format=ROW
+default-storage-engine=innodb
+innodb_autoinc_lock_mode=2
+bind-address=0.0.0.0
+
+# Galera Provider Configuration
+wsrep_on=ON
+wsrep_provider=/usr/lib/galera/libgalera_smm.so
+
+# Galera Cluster Configuration
+wsrep_cluster_name="GLUSTER-NPM"
+wsrep_cluster_address="gcomm://ADDRESSES,SEPARATED,WITH,COMA"
+
+# Galera Synchronization Configuration
+wsrep_sst_method=rsync
+
+# Galera Node Configuration
+wsrep_node_address="<THIS_NODE_IP>"
+wsrep_node_name="GLUSTER-NODE-1"

Galera/mariadb_conf/GLUSTER-NODE-2.cnf

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+# vim  /etc/mysql/conf.d/galera.cnf
+
+[mysqld]
+binlog_format=ROW
+default-storage-engine=innodb
+innodb_autoinc_lock_mode=2
+bind-address=0.0.0.0
+
+# Galera Provider Configuration
+wsrep_on=ON
+wsrep_provider=/usr/lib/galera/libgalera_smm.so
+
+# Galera Cluster Configuration
+wsrep_cluster_name="GLUSTER-NPM"
+wsrep_cluster_address="gcomm://ADDRESSES,SEPARATED,WITH,COMA"
+
+# Galera Synchronization Configuration
+wsrep_sst_method=rsync
+
+# Galera Node Configuration
+wsrep_node_address="<THIS_NODE_IP>"
+wsrep_node_name="GLUSTER-NODE-2"

Galera/mariadb_conf/GLUSTER-NODE-3.cnf

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+# vim  /etc/mysql/conf.d/galera.cnf
+
+[mysqld]
+binlog_format=ROW
+default-storage-engine=innodb
+innodb_autoinc_lock_mode=2
+bind-address=0.0.0.0
+
+# Galera Provider Configuration
+wsrep_on=ON
+wsrep_provider=/usr/lib/galera/libgalera_smm.so
+
+# Galera Cluster Configuration
+wsrep_cluster_name="GLUSTER-NPM"
+wsrep_cluster_address="gcomm://ADDRESSES,SEPARATED,WITH,COMA"
+
+# Galera Synchronization Configuration
+wsrep_sst_method=rsync
+
+# Galera Node Configuration
+wsrep_node_address="<THIS_NODE_IP>"
+wsrep_node_name="GLUSTER-NODE-3"

Galera/mariadb_conf/GLUSTER-NODE-4.cnf

@@ -0,0 +1,22 @@
+# vim  /etc/mysql/conf.d/galera.cnf
+
+[mysqld]
+binlog_format=ROW
+default-storage-engine=innodb
+innodb_autoinc_lock_mode=2
+bind-address=0.0.0.0
+
+# Galera Provider Configuration
+wsrep_on=ON
+wsrep_provider=/usr/lib/galera/libgalera_smm.so
+
+# Galera Cluster Configuration
+wsrep_cluster_name="GLUSTER-NPM"
+wsrep_cluster_address="gcomm://ADDRESSES,SEPARATED,WITH,COMA"
+
+# Galera Synchronization Configuration
+wsrep_sst_method=rsync
+
+# Galera Node Configuration
+wsrep_node_address="<THIS_NODE_IP>"
+wsrep_node_name="GLUSTER-NODE-4"