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optimize docker build and run #9

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merged 1 commit into from
Apr 17, 2023
Merged

optimize docker build and run #9

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optimize docker build and run
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@zhiliyao-polarx
zhiliyao-polarx committed Apr 17, 2023
commit 344e1be6d17a0bc581c867e93e4377693061e5c3
2 changes: 1 addition & 1 deletion Makefile
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Expand Up @@ -302,7 +302,7 @@ stop() {
echo "cn is stopped."

echo "stop dn & gms..."
ps aux | grep "$(BUILD_DIR)/run/polardbx-engine/u01/mysql/bin/mysqld" | grep -v "grep" | awk '{print $$2}'| xargs kill -9
ps aux | grep "$(BUILD_DIR)/run/polardbx-engine/u01/mysql/bin/mysqld" | grep -v "grep" | awk '{print $$2}'| xargs kill -15
echo "dn & gms are stopped."
}

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2 changes: 2 additions & 0 deletions docker/Dockerfile
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Expand Up @@ -19,5 +19,7 @@ WORKDIR /home/polarx
ADD --chown=polarx run.tar.gz $BUILD_PATH
COPY --chown=polarx entrypoint.sh entrypoint.sh

ENV TZ Asia/Shanghai

ENV BUILD_PATH=$BUILD_PATH
ENTRYPOINT /home/polarx/entrypoint.sh $BUILD_PATH/run
6 changes: 3 additions & 3 deletions docker/README.md
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Expand Up @@ -15,7 +15,7 @@ docker pull polardbx/polardb-x
之后运行如下命令启动一个 PolarDB-X 容器，建议docker内存>=12GB (CN/DN/CDC各自分配mem_size=4096)：

```shell
docker run -d --name polardb-x -m 12GB -p 3306:8527 polardbx/polardb-x
docker run -d --name polardb-x -m 12GB -p 3306:8527 -v /etc/localtime:/etc/localtime polardbx/polardb-x
```

等待之后即可通过 MySQL Client 连接到 PolarDB-X ：
Expand Down Expand Up @@ -70,7 +70,7 @@ show mpp;

1. 首先运行 polardb-x 容器，传递 mem_size 环境变量，并将数据目录挂载到本地：
```shell
docker run -d --name polardb-x -p 3306:8527 --env mem_size=8192 -v polardbx-data:/home/polarx/polardbx/build/run/polardbx-engine/data polardbx/polardb-x
docker run -d --name polardb-x -p 3306:8527 --env mem_size=8192 -v /etc/localtime:/etc/localtime -v polardbx-data:/home/polarx/polardbx/build/run/polardbx-engine/data polardbx/polardb-x
```
上述指令，使得 CN 、DN、 CDC 分别占用不超过 8GB 内存，即一共占用不超过 24GB 内存。
同时，DN 的 `innodb_buffer_pool_size` 将设置为 `0.3*8192 MB`，最终取整为 2560MB。
Expand Down Expand Up @@ -101,7 +101,7 @@ polardbx-engine（即 DN ） 是 MySQL 8.x 的一个分支，可参考 MySQL 官
CN 的运行依赖DN和GMS，GMS可以看做一个扮演特殊角色的DN，所以在进行CN开发时，可用一个容器同时扮演DN和GMS的角色。运行这样一个容器的命令如下：

```shell
docker run -d --name polardb-x --env mode=dev -p 4886:4886 -p 34886:34886 -v polardb-x-data:/home/polarx/polardbx/build/run/polardbx-engine/data polardbx/polardb-x
docker run -d --name polardb-x --env mode=dev -p 4886:4886 -p 34886:34886 -v /etc/localtime:/etc/localtime -v polardb-x-data:/home/polarx/polardbx/build/run/polardbx-engine/data polardbx/polardb-x
```

该命令会启动一个名叫 polardb-x 的容器，通过环境变量 `mode` 设置容器运行模式为开发模式（即 `mode=dev`）并将 MySQL 协议端口和私有协议端口暴露出来以供 CN 使用。
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42 changes: 32 additions & 10 deletions docker/entrypoint.sh
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Expand Up @@ -39,14 +39,14 @@ function dn_pid() {
}

function get_pid() {
if [ x"$mode" = x"play" ]; then
cn_pid
elif [ x"$mode" = x"dev" ]; then
dn_pid
else
echo "mode=$mode does not support yet."
echo ""
fi
if [ x"$mode" = x"play" ]; then
cn_pid
elif [ x"$mode" = x"dev" ]; then
dn_pid
else
echo "mode=$mode does not support yet."
echo ""
fi
}

function stop_all() {
Expand Down Expand Up @@ -106,9 +106,24 @@ function start() {
start_process
}

function waitterm() {
local PID
# any process to block
tail -f /dev/null &
PID="$!"
# setup trap, could do nothing, or just kill the blocker
trap "kill -TERM ${PID}" TERM INT
# wait for signal, ignore wait exit code
wait "${PID}" || true
# clear trap
trap - TERM INT
# wait blocker, ignore blocker exit code
wait "${PID}" 2>/dev/null || true
}

# Retry start and watch

retry_interval=5
retry_interval=30
retry_cnt=0
retry_limit=10
if [[ "$#" -ge 2 ]]; then
Expand All @@ -117,7 +132,10 @@ fi

while [[ $retry_cnt -lt $retry_limit ]]; do
start
watch

if report_pid; then
break
fi

((retry_cnt++))

Expand All @@ -126,5 +144,9 @@ while [[ $retry_cnt -lt $retry_limit ]]; do
fi
done

waitterm

stop_all

# Abort.
exit 1