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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # centos8安裝mysql5.7 ## 查看系統安裝過mysql數據庫 rpm -qa | grep mysql ## 如果安裝了 卸載掉之前的 rpm -e --nodeps 后面跟系統自帶的MySQL名 2.在usr目錄下面創建mysql目錄 \#cd /usr \#mkdir mysql 如果沒有權限,切換用戶到root,然后再執行#mkdir mysql命令 3.進入到mysql目錄下面 \#cd mysql 4.下載mysql安裝包 yum install wget \#wget<https://dev.mysql.com/get/mysql57-community-release-el6-9.noarch.rpm> 5.安裝用來配置安裝MySQL的包 \#rpm -Uvh mysql57-community-release-el6-9.noarch.rpm 報錯: ``` <pre class="calibre13">``` All matches were filtered out by modular filtering <span class="token2">for</span> argument<span class="token1">:</span> mysql<span class="token">-</span>community<span class="token">-</span>server Error<span class="token1">:</span> Unable to find a match<span class="token1">:</span> mysql<span class="token">-</span>community<span class="token">-</span>server ``` ``` yum module disable mysql yum -y install mysql-community-server ``` <pre class="calibre13">``` Error<span class="token1">:</span> Problem<span class="token1">:</span> cannot install the best candidate <span class="token2">for</span> the job <span class="token">-</span> nothing provides libsasl2<span class="token1">.</span>so<span class="token1">.</span><span class="token5">2</span><span class="token1">(</span><span class="token1">)</span><span class="token1">(</span><span class="token5">64</span>bit<span class="token1">)</span> needed by mysql<span class="token">-</span>community<span class="token">-</span>server<span class="token">-</span><span class="token5">5.7</span><span class="token5">.36</span><span class="token">-</span><span class="token5">1.</span>el6<span class="token1">.</span><span class="token3">x86_64</span> <span class="token1">(</span><span class="token2">try</span> to add <span class="token4">'--skip-broken'</span> to skip uninstallable packages or <span class="token4">'--nobest'</span> to use not only best candidate packages<span class="token1">)</span> ``` ``` 對應方案則是 找到 /etc/yum.repos.d/mysql-community.repo 打開后,找到 \[mysql57-community\] 這一塊配置(將加粗的兩個位置更新一下) baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/ gpgcheck=0 yum module disable mysql yum -y install mysql-community-server systemctl start mysqld 報錯: ``` <pre class="calibre13">``` System has not been booted <span class="token2">with</span> systemd <span class="token2">as</span> init <span class="token3">system</span> <span class="token1">(</span><span class="token5">PID</span> <span class="token5">1</span><span class="token1">)</span><span class="token1">.</span> Can't operate<span class="token1">.</span> Failed to connect to bus<span class="token1">:</span> Host is down ``` ``` 如果你按照網上的一些教程,使用systemd命令,如sudo systemctl start。 令你驚訝的是,該命令的結果是這樣的錯誤。 System has not been booted with systemd as init system (PID 1). Can't operate. 原因:您的Linux系統沒有使用systemd。 原因是你想用systemd命令來管理Linux上的服務,但你的系統并沒有使用systemd,(很可能)使用的是經典的SysV init(sysvinit)系統。 但這怎么可能呢?你使用的是Ubuntu,教程也是針對同一版本的Ubuntu。為什么你不能用呢? 如果你在Windows里面用WSL使用Ubuntu,那么你的系統就會有SysV而不是systemd,當你運行systemctl命令時,你的系統就會抱怨(針對Linux系統的systemd init系統)。 如何知道你使用的是哪個init系統?你可以使用這個命令來知道與PID 1(系統上運行的第一個進程)相關聯的進程名稱。 ps -p 1 -o comm= 它應該在輸出中顯示systemd或sysv(或類似的東西)。 如何解決'System has not been booted with systemd'錯誤? 答案很簡單,就是不要使用systemctl命令,而是使用等同的sysvinit命令。相反,可以使用對應的sysvinit命令。 這并不復雜,而且這兩個命令的語法有些相似。 # \*\*失敗告終 # \*\*
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