Skip to content

[pull] master from kevoreilly:master #533

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We鈥檒l occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
pull merged 1 commit into from
Sep 3, 2026
Merged

[pull] master from kevoreilly:master #533

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
42 changes: 39 additions & 3 deletions installer/cape2.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -927,8 +927,24 @@ function install_mongo(){
fi
fi

CODENAME=$(lsb_release -cs)
if [ "$MONGO_VERSION" = "4.4" ]; then
# MongoDB 4.4 only has repositories up to Ubuntu 20.04 (focal)
if [ "$CODENAME" != "focal" ] && [ "$CODENAME" != "bionic" ] && [ "$CODENAME" != "xenial" ]; then
CODENAME="focal"
fi

# MongoDB 4.4 depends on libssl1.1, which is not present in Ubuntu 22.04 (jammy) and 24.04 (noble)
if ! dpkg -l | grep -q "libssl1.1"; then
echo "[+] Installing libssl1.1 for MongoDB 4.4 compatibility"
wget -q http://archive.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.1f-1ubuntu2_amd64.deb -O /tmp/libssl1.1.deb
sudo dpkg -i /tmp/libssl1.1.deb || true
rm -f /tmp/libssl1.1.deb
fi
fi

sudo curl -fsSL "https://pgp.mongodb.com/server-${MONGO_VERSION}.asc" | sudo gpg --dearmor -o /etc/apt/keyrings/mongo.gpg --yes
echo "deb [signed-by=/etc/apt/keyrings/mongo.gpg arch=amd64] https://repo.mongodb.org/apt/ubuntu $(lsb_release -cs)/mongodb-org/${MONGO_VERSION} multiverse" > /etc/apt/sources.list.d/mongodb.list
echo "deb [signed-by=/etc/apt/keyrings/mongo.gpg arch=amd64] https://repo.mongodb.org/apt/ubuntu ${CODENAME}/mongodb-org/${MONGO_VERSION} multiverse" > /etc/apt/sources.list.d/mongodb.list

sudo apt-get update 2>/dev/null
sudo apt-get install -y libpcre3-dev numactl cron
Expand All @@ -944,7 +960,7 @@ cat >> /lib/systemd/system/enable-transparent-huge-pages.service <<EOF
Description=Enable Transparent Hugepages (THP)
DefaultDependencies=no
After=sysinit.target local-fs.target
Before=mongod.service
Before=mongod.service mongodb.service
[Service]
Type=oneshot
ExecStart=/bin/sh -c 'echo always | tee /sys/kernel/mm/transparent_hugepage/enabled > /dev/null && echo defer+madvise | tee /sys/kernel/mm/transparent_hugepage/defrag > /dev/null && echo 0 | tee /sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_none > /dev/null && echo 1 | tee /proc/sys/vm/overcommit_memory > /dev/null'
Expand All @@ -963,6 +979,18 @@ EOF
systemctl daemon-reload
fi

# Determine optimal GLIBC_TUNABLES setting based on kernel version.
# On Linux kernel 6.19 and newer, glibc.pthread.rseq=0 causes tcmalloc/rseq conflicts leading to crashes or refusal to start.
# We set it to 1 on kernel versions >= 6.19, allowing glibc to register rseq and tcmalloc to fall back safely.
RSEQ_VAL=0
KERNEL_MAJOR=$(uname -r | cut -d. -f1)
KERNEL_MINOR=$(uname -r | cut -d. -f2)
if [[ "$KERNEL_MAJOR" =~ ^[0-9]+$ ]] && [[ "$KERNEL_MINOR" =~ ^[0-9]+$ ]]; then
if [ "$KERNEL_MAJOR" -gt 6 ] || { [ "$KERNEL_MAJOR" -eq 6 ] && [ "$KERNEL_MINOR" -ge 19 ]; }; then
RSEQ_VAL=1
fi
fi

if [ ! -f /lib/systemd/system/mongodb.service ]; then
crontab -l | { cat; echo "@reboot /bin/mkdir -p /data/configdb && /bin/mkdir -p /data/db && /bin/chown mongodb:mongodb /data -R"; } | crontab -
cat >> /lib/systemd/system/mongodb.service << EOF
Expand All @@ -972,7 +1000,7 @@ Wants=network.target
After=network.target
[Service]
PermissionsStartOnly=true
Environment="GLIBC_TUNABLES=glibc.pthread.rseq=0"
Environment="GLIBC_TUNABLES=glibc.pthread.rseq=${RSEQ_VAL}"
#ExecStartPre=/bin/mkdir -p /data/{config,}db && /bin/chown mongodb:mongodb /data -R
# https://www.tutorialspoint.com/mongodb/mongodb_replication.htm
ExecStart=/usr/bin/numactl --interleave=all /usr/bin/mongod --setParameter "tcmallocReleaseRate=5.0"
Expand All @@ -990,6 +1018,14 @@ LimitNOFILE=1048576
[Install]
WantedBy=multi-user.target
EOF
else
# Ensure GLIBC_TUNABLES is correctly set in existing service file
if grep -q 'GLIBC_TUNABLES' /lib/systemd/system/mongodb.service; then
sed -i "s|Environment=\"GLIBC_TUNABLES=glibc.pthread.rseq=.*\"|Environment=\"GLIBC_TUNABLES=glibc.pthread.rseq=${RSEQ_VAL}\"|g" /lib/systemd/system/mongodb.service
else
# Inject GLIBC_TUNABLES environment variable under [Service] section
sed -i "/\[Service\]/a Environment=\"GLIBC_TUNABLES=glibc.pthread.rseq=${RSEQ_VAL}\"" /lib/systemd/system/mongodb.service
fi
fi
sudo mkdir -p /data/{config,}db
sudo chown mongodb:mongodb /data/ -R
Expand Down
Loading