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from Elasticsearch the Definivte guide Please Do Not Tweak JVM Settings The JVM exposes dozens (hundreds even!) of settings, parameters, and configura 阅读全文
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Install required packages. yum-utils provides the yum-config-manager utility, and device-mapper-persistent-data and lvm2 are required by the devicemap 阅读全文
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ERROR: Couldn't connect to Docker daemon at http+docker://localunixsocket - is it running? docker 每次都要sudo, 或者其他服务启动的时候,提示上述的错误 如果还没有 docker group 就添加 阅读全文
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涉及到有边界队列,无边界队列。poolSize、corePoolSize、maximumPoolSize 三者参数含义 If there are more than corePoolSize but less than maximumPoolSize threads running, a new t 阅读全文
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依赖的包 vim /etc/exports /data/test_nfs 10.125.37.12/16(rw,sync,no_root_squash)/data/test_nfs 10.125.37.13/16(rw,sync,no_root_squash) exportfs -a 生效 show 阅读全文
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b. canal的原理是模拟自己为mysql slave,所以这里一定需要做为mysql slave的相关权限. CREATE USER canal IDENTIFIED BY 'canal'; GRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT 阅读全文