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501efee07e
also, worker.yaml.j2:
- hone worker_name
- remove worker_pid_file entry (would only be used if worker_daemonize
set to true; also, synapse only knows about the container namespace
and thus can not provide the required host-view PID)
31 lines
1.1 KiB
Bash
31 lines
1.1 KiB
Bash
#!/bin/bash
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# Find a synapse worker's PID and write it to a file so systemd can manage it as a service
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# example invocation:
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# matrix-synapse-worker-write-pid user_dir:18700 /run/matrix-synapse-worker.user_dir:18700.pid
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docker_api_call() { curl --silent --unix-socket /var/run/docker.sock ${@}; }
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TARGETCONTAINER=matrix-synapse
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TARGETWORKER=${1}
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PIDFILE=${2}
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# get ID list of subprocesses executed in $TARGETCONTAINER, and for each..
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for EXECID in $(docker_api_call http://localhost/containers/${TARGETCONTAINER}/json | jq --raw-output '.ExecIDs[]')
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do
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# fetch detailed process info
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EXECINFO=$(docker_api_call http://localhost/exec/${EXECID}/json)
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# extract config file path from last command argument
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WORKERCONFIGFILE=$(echo ${EXECINFO} | jq --raw-output .ProcessConfig.arguments[-1])
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# reconstruct worker name
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WORKERNAME=${WORKERCONFIGFILE#*/worker.}
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WORKERNAME=${WORKERNAME%.yaml}
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# if name matches the target worker: write out most recent PID & quit
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[ "${WORKERNAME}" = "${TARGETWORKER}" ] \
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&& echo ${EXECINFO} | jq --raw-output .Pid > ${PIDFILE} \
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&& exit 0
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done
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