galera init and file limits
This commit is contained in:
Andrey Korolyov
parent
6cd9c52333
commit
fe1e2a7d10
3
deployment/puppet/corosync/files/limits.conf
Normal file
3
deployment/puppet/corosync/files/limits.conf
Normal file
@ -0,0 +1,3 @@
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# Raising open file limit for OpenStack services
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* soft nofile 102400
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* hard nofile 112640
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@ -88,6 +88,16 @@ class corosync (
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# this value is provided. This is emulating a required variable as defined in
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# parameterized class.
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file { 'limitsconf':
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ensure => present,
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path => '/etc/security/limits.conf',
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source => 'puppet:///modules/corosync/limits.conf',
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replace => true,
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owner => '0',
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group => '0',
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mode => '0644',
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before => before => Service["corosync"],
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}
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# Using the Puppet infrastructure's ca as the authkey, this means any node in
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@ -282,22 +282,74 @@ case "$mode" in
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cd $basedir
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echo $echo_n "Starting MySQL"
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if test -x $bindir/mysqld_safe
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then
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# Give extra arguments to mysqld with the my.cnf file. This script
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# may be overwritten at next upgrade.
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$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null 2>&1 &
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wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
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if [ -f /tmp/wsrep-init-file ]; then
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if test -x $bindir/mysqld_safe
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then
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# Give extra arguments to mysqld with the my.cnf file. This script
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# may be overwritten at next upgrade.
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$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null 2>&1 &
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wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
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# Make lock for RedHat / SuSE
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if test -w "$lockdir"
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then
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touch "$lock_file_path"
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fi
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# Make lock for RedHat / SuSE
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if test -w "$lockdir"
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then
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touch "$lock_file_path"
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fi
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exit $return_value
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exit $return_value
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else
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log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)"
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fi
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else
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log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)"
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if [ "$(crm_attribute -t crm_config --name mysqlprimaryinit --query 2> /dev/null | awk -F\= '{print $4}')" = 'done' ] ; then
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CRM_ONLINE_NODES=( $(crm node list | grep -v \(offline\) | sed 's/\://g') )
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sleep 90
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WSREP_EPOCH=$(echo 'show status;' | mysql -u root | grep wsrep_protocol_version | awk '{print $2}')
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WSREP_STATE=$(echo 'show status;' | mysql -u root | grep wsrep_cluster_status | awk '{print $2}')
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if [ "$WSREP_STATE" = 'non-Primary' ]; then
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WINNER_NODE=$(hostname)
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MAX_EPOCH=$WSREP_EPOCH
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crm_attribute -t crm_config --node $(hostname) --name mysqlepoch --update $WSREP_EPOCH
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# Seems to be more or less legitimate solution explicitly for "datacenter power switch" situation:
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# - first of all, more complex logic does not bring more precise knowledge of which node
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# should be a master, because it related to such property as an epoch and user may simply
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# decide to not start node which was online during entire disaster holding "bad" data.
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# - five minutes are enough for man who turns servers in the rack and for crm to push significant
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# percentage of the epoch values to the shared resource and not too large for such type of disaster at all.
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sleep 300
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# Check if someone already decided to declare himself master...
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RAISED_MASTER=$(crm_attribute -t crm_config --name mysqlmaster --query 2> /dev/null | awk -F\= '{print $4}')
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# ... and if nobody did:
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for node in "${CRM_ONLINE_NODES[@]}" ; do
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CUR_EPOCH=$(crm_attribute -t crm_config --node $node --name mysqlepoch --query 2> /dev/null | awk -F\= '{print $4}')
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if [ -z "$CUR_EPOCH" ] ; then
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echo "Skipping comparison with node $node"
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else
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if [ "$(echo ''$CUR_EPOCH' > '$MAX_EPOCH'' | bc)" -eq '1' ] ; then
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WINNER_NODE=$node
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MAX_EPOCH=$CUR_EPOCH
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fi
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fi
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done
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if [ "$RAISED_MASTER" != '1' ]; then
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if [ "$WINNER_NODE" = "$(hostname)" ] ; then
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crm_attribute -t crm_config --name mysqlmaster --update 1
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echo "mysql: Assuming current node as a new master..."
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service mysql stop
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$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" --wsrep-cluster-address="gcomm://" $other_args >/dev/null 2>&1 &
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wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
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crm_attribute -t crm_config --name mysqlmaster --delete
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fi
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else
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echo "mysql: Master flag was already set, skipping our (probably legitimate yet) promotion"
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sleep 90
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$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null 2>&1 &
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wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
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fi
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else
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echo Nothing to do
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fi
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fi
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fi
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;;
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@ -235,7 +235,7 @@ class galera (
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Package["MySQL-server"] -> Exec["set-mysql-password"]
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File['/tmp/wsrep-init-file'] -> Exec["set-mysql-password"] -> Exec["wait-initial-sync"]
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-> Exec["kill-initial-mysql"] -> Service["mysql-galera"] -> Exec ["wait-for-synced-state"]
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Exec["kill-initial-mysql"] -> Exec["rm-init-file"]
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-> Exec["rm-init-file"]
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Package["MySQL-server"] ~> Exec["set-mysql-password"] ~> Exec ["wait-initial-sync"] ~> Exec["kill-initial-mysql"]
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# FIXME: This class is deprecated and should be removed in future releases.
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