#!/bin/bash Version=1.0.4 # Usage: failover_p4d_from_this_host.sh SDP_INSTANCE Style Type NewServerID NO_OP # This is intended to be called by 'hms', not directly by a human. # Micro-functions. function msg () { echo -e "$*"; } function bail () { msg "\nError: ${1:-Unknown Error}\n"; exit ${2:-1}; } function usage () { msg "Usage:\n\t$UsageSummary\n"; exit 2; } function cmd () { if [[ $NO_OP -eq 0 ]]; then msg "Running: $*" $* return $? else msg "NO_OP: Would run: $*" fi } # Do nothing unless usage is correct. export SDP_INSTANCE=${1:-Unset} declare Style=${2:-Unset} declare Type=${3:-Unset} declare NewServerID=${4:-Unset} declare NO_OP=${5:-Unset} declare ThisScript=${0##*/} declare UsageSummary="$ThisScript SDP_INSTANCE Style Type NewServerID NO_OP" declare P4DInitScript=/p4/$SDP_INSTANCE/bin/p4d_${SDP_INSTANCE}_init declare VerifyCmd= declare -i ExitCode= [[ $# -eq 5 ]] || bail "Bad Usage! Usage:\n\t$UsageSummary\n" msg "Starting $ThisScript v$Version on ${HOSTNAME%%.*} at $(date)." msg "Args: I=$SDP_INSTANCE S=$Style T=$Type NS=$NewServerID N=$NO_OP" # Load SDP controlled shell environment. source /p4/common/bin/p4_vars "$SDP_INSTANCE" || \ bail "Failed to load SDP environment for instance $SDP_INSTANCE." [[ $(id -u -n) == $OSUSER ]] || bail "$0 can only be run by $OSUSER" [[ $NO_OP -eq 1 ]] && msg "NO_OP: Preview Mode Enabled." [[ -x $P4DInitScript ]] || bail "$P4DInitScript is not executable." [[ -r $P4ROOT/server.id ]] || bail "Missing file $P4ROOT/server.id. Aborting." [[ $Style == Scheduled && ! -r $P4JOURNAL.from_old_master && $NO_OP -eq 0 ]] && \ bail "The journal file from the master [$P4JOURNAL.from_old_master] is expected with Scheduled Failover but is missing. Aborting." [[ ${SERVERID^^} != *"MASTER"* ]] ||\ bail "Instance $SDP_INSTANCE ServerID ($SERVERID) indicates it is already a master server! Aborting Failover." cmd $P4DInitScript stop if [[ $Style == Scheduled ]]; then cmd /bin/mv -f $P4JOURNAL $P4JOURNAL.moved_by_hms.$(date +'%Y%m%d-%H%M%S') ||\ bail "Failed to move $P4JOURNAL aside on ${HOSTNAME%%.%}." cmd /bin/mv -f $P4JOURNAL.from_old_master $P4JOURNAL ||\ bail "Failed to move $P4JOURNAL.from_old_master to $P4JOURNAL." fi if [[ $Style == Scheduled ]]; then msg "Replaying journal from the master just in case this replica wasn't fully caught up." cmd $P4DBIN -r $P4ROOT -f -jr $P4JOURNAL || bail "Failed to replay journal from old master." fi cmd mv $P4ROOT/server.id $P4ROOT/server.id.moved_by_hms.$(date +'%Y%m%d-%H%M%S') ||\ bail "Failed to move $P4ROOT/server.id file aside." cmd $P4DBIN -xD $NewServerID || bail "Failed to set new ServerID to $NewServerID." export SERVERID=$(cat ${P4ROOT}/server.id) if [[ "$SERVERID" == "$NewServerID" ]]; then msg "Verified: New ServerID ($SERVERID) is set." else if [[ $NO_OP -eq 0 ]]; then bail "Failed to confirm new ServerID was set. Aborting failover." else msg "Verified: New ServerID ($NewServerID) is set. (SIMULATED CHECK)." fi fi ### ### Key Decisions: If some archive files are lost, do we want to prevent a return ### to service? For now, go live with information. ### cmd $P4DInitScript start if [[ $Type == Full ]]; then [[ $NO_OP -eq 0 ]] && sleep 2 VerifyCmd="$P4CBIN/p4verify.sh $SDP_INSTANCE -recent" [[ $Style == Scheduled ]] && VerifyCmd+=" -recover" msg "Verifying recent changes to see if any where not replicated." cmd $VerifyCmd < /dev/null > /dev/null 2>&1 cat $LOGS/p4verify.log if [[ $? -eq 0 ]]; then msg "\n$Style $Type Failover of p4d to ${HOSTNAME%%.*}, including verification of recent archive files, completed successfully at $(date)." else msg "\nError: Databases are OK, but couldn't verify recent archive files survived failover." msg "\nMetadata for $Style $Type Failover of p4d to ${HOSTNAME%%.*} completed at $(date)." ExitCode=2 fi else msg "\n$Style $Type Failover of p4d to ${HOSTNAME%%.*} completed successfully at $(date)." fi msg "That took $(($SECONDS/3600)) hours $(($SECONDS%3600/60)) minutes $(($SECONDS%60)) seconds.\n" exit $ExitCode
# | Change | User | Description | Committed | |
---|---|---|---|---|---|
#2 | 25113 | Robert Cowham | Merge latest changes from dev | ||
#1 | 22142 | Robert Cowham | Merge in latest changes from Dev | ||
//guest/perforce_software/sdp/dev/Server/Unix/p4/common/hms/scripts/failover_p4d_to_this_host.sh | |||||
#2 | 21921 | C. Thomas Tyler |
HMS change, to simplify setup on compliant platforms (i.e. those using bash 4.x). The shebang line for all bash scripts has been standardized to /bin/bash, and bash checks for $BASH_VERSION added where needed. References to having a custom-built /usr/local/bin/bash have been removed. As a trade-off, non-compliant platforms (way-old Linux and Mac using bash 3.x) will have a bit more work to do to work with shebang lines. |
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#1 | 20745 | C. Thomas Tyler |
Approving as is since it isn't changing core SDP functionality, and reviewing it all line by line will take some time. We can do that as we move forward with it. First addition of HMS v1.0 files. This change is a soft launch HMS for initial deployment and testing. Updates to HMS-related files are expected and will bypass pre-commit code review until stabilized. |